Device for removing iron filings from gear oil in a walking device
By installing magnetic plugs on the end caps of the traveling device to adsorb iron filings in the gear oil, the wear problem caused by impurities in the gear oil is solved, extending the service life of the reducer and reducing maintenance costs.
Patent Information
- Application Number
- CN202522031020.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-08-04
- Estimated Expiration
- 2035-09-22
AI Technical Summary
The gear oil in the reducer of the traveling mechanism in existing construction machinery contains impurities such as iron filings, which causes gear wear and affects the life of the reducer.
A magnetic plug is installed on the end cover of the walking device. It uses its magnetism to attract magnetic impurities such as iron filings in the gear oil. The gear oil is then purified by connecting a strong magnet through a threaded hole.
It effectively removes iron filings from gear oil, extends the service life of the reducer, and is simple to operate with low maintenance costs.
Smart Images

Figure CN224592662U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering machinery technology, specifically a device for removing iron filings from gear oil in a walking device. Background Technology
[0002] Currently, construction machinery is being used more and more widely, with excavators being extensively used in highway bridges, railways, water conservancy, and urban construction projects. The walking mechanism is mainly the device that drives the construction machinery to move.
[0003] The lifespan of the travel gear reducer directly affects the overall performance of the excavator. As a crucial component of the travel gear, damage to the reducer can cause significant disruption to the construction schedule (most reducer damage is caused by pitting corrosion on the gear teeth, which is often due to impurities such as iron filings in the gear oil). Therefore, the travel gear must be safe, reliable, and adaptable to various working conditions.
[0004] Therefore, this invention adds a magnetic plug to the end cover, which uses its own magnetic principle to attract iron filings in the gear oil, thereby increasing the life of the gear transmission components and extending the life of the reducer. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention provides a device for removing iron filings from gear oil in a walking device.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A device for removing iron filings from gear oil in a traveling device includes an end cap for mounting on the port of the traveling device reducer gear ring near the planetary gear transmission assembly; the end cap has a threaded hole in the corresponding area of the traveling device reducer gear set, the threaded hole is connected to a magnetic plug, the magnetic plug is used to adsorb magnetic impurities such as iron filings in the gear; the magnetic plug includes a threaded post, one end of the threaded post is provided with a stop cap, the other end of the threaded post is installed with a strong magnet, and the end face of the stop cap is provided with a tool groove.
[0008] Furthermore, the tool slot is a hexagonal slot.
[0009] Furthermore, a sealing ring groove is provided at the junction of the threaded post and the stop cap, and a sealing ring is provided in the sealing ring groove.
[0010] Furthermore, the end cap is provided with at least two threaded holes, each threaded hole is connected to a magnetic plug, and the at least two threaded holes are evenly arranged or symmetrically arranged along the circumference of the end cap.
[0011] Compared with the prior art, the present invention has the following advantages:
[0012] This invention utilizes the magnetic properties of a magnetic plug to attract impurities such as iron filings from gears, thereby purifying the gear oil. For subsequent cleaning, simply loosen the magnetic plug to remove the iron filings and other impurities, then tighten it again with the appropriate torque. It is characterized by its simple operation and cost-free maintenance. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of a device for removing iron filings from gear oil in a traveling device, which is applied to a speed reducer.
[0014] Figure 2 This is a front view of a device for removing iron filings from gear oil in a walking device according to this utility model.
[0015] Figure 3 This is a schematic diagram of the magnetic plug in this utility model.
[0016] In the diagram: 1. Gear ring, 2. Drive shaft assembly, 3. End cap, 4. Magnetic screw plug assembly, 41. Threaded post, 42. Stop cap, 43. Strong magnet, 44. Tool slot, 45. Sealing ring slot, 5. Planetary gear transmission assembly. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Example 1:
[0019] Please see Figures 1 to 3 This utility model provides a device for removing iron filings from gear oil in a traveling device, including an end cap 3. The end cap 3 is used to install on the port of the gear ring 1 of the traveling device reducer near the planetary gear transmission assembly 5. The end cap and the corresponding area of the gear set of the traveling device reducer are provided with threaded holes. The threaded holes are connected to magnetic plugs 4. The magnetic plugs 4 are used to adsorb magnetic impurities such as iron filings in the gear, thereby achieving the purpose of purifying the gear oil. It is also used for adding and changing gear oil.
[0020] Specifically, the magnetic plug 4 includes a threaded post 41, a stop cap 42 is provided at one end of the threaded post 41, a strong magnet 43 is installed at the other end of the threaded post 41, and a tool groove 44 is provided on the end face of the stop cap 42.
[0021] The threaded post 41 is connected to the threaded hole, the stop cap 42 is used for positioning with the end cap 3, the strong magnet 43 is used to attract magnetic impurities such as iron filings, and the tool slot 44 is a hexagonal slot for connecting a hexagonal wrench for easy loading and unloading.
[0022] Specifically, a sealing ring groove 45 is provided at the junction of the threaded post 41 and the stop cap 42, and a sealing ring is provided in the sealing ring groove 45 to prevent oil leakage.
[0023] Specifically, the strong magnet 43 is connected to the threaded post 41 by embedding.
[0024] Specifically, the end cap 3 is provided with at least two threaded holes, and a magnetic plug 4 is connected in each threaded hole. The at least two threaded holes can be evenly arranged along the circumference of the end cap 3 or symmetrically arranged.
[0025] Preferably, three threaded holes are provided, distributed on the three quadrant dividing lines of the end cap 3, and arranged symmetrically.
[0026] This invention changes the previous method of purifying gear oil. During gear transmission, various frictions generate iron filings, which accelerate gear wear. The magnetic plug design can attract some of these iron filings from the gear oil, thus extending the service life of the reducer. Cleaning is simple: just loosen the magnetic plug, remove the iron filings and other impurities, and then tighten it again. It features simple operation and requires no maintenance costs.
[0027] Example 2:
[0028] The device for removing iron filings from gear oil in a walking device as described in Example 1 is applied to the existing walking device reducer.
[0029] The travel device reducer includes a gear ring 1, with an internal gear ring provided at one end of the inner wall of the gear ring 1. The internal gear ring meshes with and is connected to a planetary gear transmission assembly 5. The planetary gear transmission assembly 5 is internally meshed with and connected to a transmission shaft assembly 2. The end of the transmission shaft assembly 2 away from the internal gear ring of the gear ring 1 is rotatably connected to the inner wall of the gear ring 1 through a bearing.
[0030] The drive shaft assembly 2 and the planetary gear transmission assembly 5 transmit the torque of the motor to realize the rotation of the gear ring 1. The gear ring 1 is connected to the sprocket through the flange, and the sprocket is connected to the track, thereby driving the track to rotate to achieve forward or backward movement.
[0031] The end cap 3 is assembled to one end of the gear ring 1 near the planetary gear transmission assembly 5 by bolts, threads or interference fit, so that the magnetic plug 4 can adsorb magnetic impurities such as iron filings in the gear.
[0032] The end cap 3 is installed at the port of the gear ring 1 to seal and protect the internal structure. The magnetic plug 4 is used to adsorb magnetic impurities such as iron filings in the gear, and to add or change gear oil.
[0033] First, the torque generated by the motor in the traveling device is transmitted to the planetary gears of the planetary gear transmission assembly 5 through the transmission shaft assembly 2. The planetary gears then transmit the torque to the gear ring 1, which drives the sprocket to rotate. The sprocket drives the track to rotate, thereby enabling the excavator to travel.
[0034] It should be noted that the travel device reducer itself is existing technology, so the connection relationship of its internal components will not be described in detail.
[0035] The travel device reducer can also be the CN214367677U travel drive device and engineering machinery reducer, with the end cover of this patent replacing its end cover; or it can be a CN115126830A ultra-high torque travel reducer, with the end cover of this patent replacing its rear end cover.
[0036] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.
[0037] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0038] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0039] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A device for removing iron filings from gear oil in a traveling mechanism, comprising an end cap, characterized in that, The end cap is used to be installed on the port of the gear ring of the travel device near the planetary gear transmission assembly; The end cap and the corresponding area of the gear set of the reducer of the walking device are provided with threaded holes, and the threaded holes are connected to magnetic plugs. The magnetic plugs are used to adsorb iron filings in the gears. The magnetic plug includes a threaded post, one end of which is provided with a stop cap, and the other end of which is provided with a strong magnet. The end face of the stop cap is provided with a tool groove.
2. A device for removing iron filings from gear oil in a walking device according to claim 1, characterized in that The tool slot is a hexagonal slot.
3. A device for removing iron filings from gear oil in a walking device according to claim 1, characterized in that A sealing ring groove is provided at the junction of the threaded post and the stop cap, and a sealing ring is provided in the sealing ring groove.
4. A device for removing iron filings from gear oil in a walking device according to claim 1, characterized in that The end cap is provided with at least two threaded holes, each threaded hole is connected to a magnetic plug, and the at least two threaded holes are evenly arranged or symmetrically arranged along the circumference of the end cap.