A protection device for a rotary lubricating pipeline of a excavator
By installing a split-type protective ring under the excavator's slewing platform, the problem of easy damage to the lubrication pipeline was solved, achieving pipeline safety protection and improved operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANZHONG JIANJI CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-03
AI Technical Summary
Excavator slewing lubrication lines are easily damaged by impacts in harsh environments, affecting normal use and work efficiency.
Design a split-type protective device comprising a first protective ring, a second protective ring, and a third protective ring, which is connected to the upper and lower frames by gaskets and bolts to form a ring structure to protect the lubrication pipeline from collisions with external objects.
It effectively prevents lubrication pipelines from being damaged by collisions with external objects during operation, improving safety and operational efficiency, and reducing labor intensity.
Smart Images

Figure CN224454292U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of excavator technology, specifically a protection device for the slewing lubrication pipeline of an excavator. Background Technology
[0002] An excavator, also known as a digging machine or a soil excavator, is an earthmoving machine that uses a bucket to dig materials above or below the machine's bearing surface and load them into transport vehicles or unload them into a stockpile.
[0003] Lubrication lines are usually installed on the outside of the slewing bearing of an excavator. However, due to the harsh working environment of excavators, these lines are exposed and are easily damaged by impacts during excavator operation, affecting the normal use and working efficiency of the excavator and having a significant impact on outdoor operations.
[0004] Therefore, the inventor sought to solve the problem of designing a device to protect the lubrication pipeline and prevent it from being damaged by collisions with external objects during operation. Utility Model Content
[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a protective device for the slewing lubrication pipeline of an excavator. This device is movable, suitable for neatly arranging various sizes of lifting rings, and improves safety, operational efficiency, and reduces labor intensity.
[0006] The technical solution adopted by this utility model device is: a protection device for the slewing lubrication pipeline of an excavator, which is set at the lower end of the upper frame and connected to the threaded seat set on the lower frame by means of gaskets and bolts. It includes a first protective ring, a second protective ring, and a third protective ring. The first, second, and third protective rings have the same curvature and form a circular ring structure. The first, second, and third protective rings are set on the outer side of the slewing bearing of the lower frame. Each of the first, second, and third protective rings includes a main body, a support plate, a mounting seat, and a reinforcing ring. The support plate is set on the outer circumferential surface of the main body. The upper end of the support plate is set with a mounting seat. The mounting seat has symmetrically distributed mounting holes. Reinforcing rings are set at both ends of the inner sidewall edge of the main body.
[0007] Furthermore, the support plate includes two parallel support plates.
[0008] Furthermore, a positioning groove is provided in the middle of the main body of the first protective ring, and two support plates are provided on the first protective ring and are symmetrically distributed.
[0009] Furthermore, the second protective ring is provided with three support plates that are evenly spaced.
[0010] Furthermore, the third protective ring is provided with two support plates that are symmetrically distributed.
[0011] Furthermore, the upper surface of the mounting base is lower than the height of the reinforcing ring and the upper edge of the main body.
[0012] The beneficial effects of this utility model device are:
[0013] 1. This utility model provides real-time protection for the lubrication pipeline by adding a three-section split protective ring under the rotary platform to protect the pipeline, thereby protecting the lubrication pipeline and preventing damage caused by collision with external objects during operation. Attached Figure Description
[0014] Figure 1 This is a structural view of the present invention.
[0015] Figure 2 This is an assembly structure view of this utility model.
[0016] Explanation of reference numerals in the attached drawings: 1-Main body; 2-Support plate; 3-Mounting seat; 4-Reinforcing ring; 5-Positioning groove; 6-Second protective ring; 7-First protective ring; 8-Third protective ring; 9-Thread seat; 10-Upper frame; 11-Shim; 12-Bolt. Detailed Implementation
[0017] The present invention will be further described below with reference to specific embodiments. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.
[0018] Example 1: See Figures 1 to 2 This utility model provides structural and assembly views of a protective device for the slewing lubrication pipeline of an excavator. It is mounted on the lower end of the upper frame 10 via gaskets 11 and bolts 12 and connected to a threaded seat 9 on the lower frame. The device includes a first protective ring 7, a second protective ring 6, and a third protective ring 8. These three rings have the same curvature and form a circular ring structure. The first protective ring 7, second protective ring 6, and third protective ring 8 are located on the outer side of the slewing bearing of the lower frame. Each of these rings includes a main body 1, a support plate 2, a mounting seat 3, and a reinforcing ring 4. The support plate 2 is located on the outer circumferential surface of the main body 1, and the mounting seat 3 is located at the upper end of the support plate 2. The mounting seat 3 has symmetrically distributed mounting holes. Reinforcing rings 4 are located at both ends of the inner sidewall of the main body 1.
[0019] The support plate 2 includes two parallel support plates. The support plate 2 and the mounting plate are welded to the main body 1. The main body 1 has an arc structure to fit the shape of the slewing bearing.
[0020] In order to correspond with the structure on the excavator slewing bearing and the position of the screw seat 9, the structures of the first protective ring 7, the second protective ring 6, and the third protective ring 8 are different. The first protective ring 7 is provided with a positioning structure, and a positioning groove 5 is opened in the middle of the main body 1 of the first protective ring 7. There are two support plates 2 on the first protective ring 7, which are symmetrically distributed. The positioning groove 5 is used to pass through the lubrication pipeline that interferes with the main body 1.
[0021] The second anti-slip ring is located to the left of the first protective ring 7 and is connected to it. The second protective ring 6 has three support plates 2 that are evenly distributed.
[0022] The third protective ring 8 is located to the right of the first protective ring 7 and is connected to it. There are two support plates 2 on the third protective ring 8, which are symmetrically distributed.
[0023] The upper surface of the mounting base 3 is lower than the upper edge of the reinforcing ring 4 and the main body 1.
[0024] Before installation, the present invention requires welding screw seats 9 corresponding to the number of protective devices onto the bottom plate of the slewing platform. Then, the device is installed on it using bolts 12. After installation, the slewing lubrication pipeline can be protected inside, preventing damage to the excavator during operation due to collisions between the slewing bearing lubrication pipeline and stones, wood, etc., thereby ensuring the smooth progress of excavation operations.
[0025] This utility model provides real-time protection for the lubrication pipeline by adding a three-section split protective ring below the rotating platform, thereby protecting the lubrication pipeline and preventing it from being damaged by collisions with external objects during operation.
Claims
1. A revolving lubrication pipeline protection device for excavator, which is arranged at the lower end of the upper frame (10) through a gasket (11) and a bolt (12) and connected with a wire seat (9) arranged on the lower frame, characterized in that: It includes a first protective ring (7), a second protective ring (6), and a third protective ring (8). The first protective ring (7), the second protective ring (6), and the third protective ring (8) have the same curvature and form a circular ring structure. The first protective ring (7), the second protective ring (6), and the third protective ring (8) are located on the outside of the slewing bearing of the lower frame. The first protective ring (7), the second protective ring (6), and the third protective ring (8) each include a main body (1), a support plate (2), a mounting seat (3), and a reinforcing ring (4). The support plate (2) is provided on the outer circumferential surface of the main body (1). The mounting seat (3) is provided at the upper end of the support plate (2). The mounting seat (3) has symmetrically distributed mounting holes. The reinforcing ring (4) is provided at both ends of the inner sidewall of the main body (1).
2. The excavator swing lubrication line protection device of claim 1, wherein: The support plate (2) includes two parallel support plates.
3. The excavator swing lube line protection device of claim 1, wherein: The first protective ring (7) has a positioning groove (5) in the middle of the main body (1), and the first protective ring (7) has two support plates (2) that are symmetrically distributed.
4. The excavator swing lube line protection device of claim 1, wherein: The second protective ring (6) has three support plates (2) that are evenly spaced.
5. The excavator swing lube line protection device of claim 1, wherein: The support plates (2) set on the third protective ring (8) are two and symmetrically distributed.
6. The excavator swing lube line protection device of claim 1, wherein: The upper surface of the mounting base (3) is lower than the upper edge of the reinforcing ring (4) and the main body (1).