A top rod mechanism for press fitting ABS eccentric bearing
Patent Information
- Application Number
- CN202522398985.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-12
AI Technical Summary
During the press-fitting of the eccentric bearing in a plunger pump, grease on the push rod can easily be carried out of the eccentric bearing, leading to its scrapping. Furthermore, frequent manual wiping of the bearing is required, which affects work efficiency and increases costs.
Design a push rod mechanism with a small hole on the lower end face of the push rod and an internal air passage. The air passage is connected to an air source to blow out grease using airflow, preventing grease from adhering to the eccentric bearing.
It effectively prevents grease from being carried out of the eccentric bearing, reduces the need for manual lubrication, improves work efficiency, and reduces costs.
Smart Images

Figure CN224927383U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a plunger pump, specifically to a push rod mechanism for press-fitting an ABS eccentric bearing. Background Technology
[0002] After the eccentric bearing is press-fitted, the plunger pump is transported by a robotic arm. During the transport process, the eccentric bearing needs to be held down by a push rod (to flip it). Because there is grease on the push rod, the eccentric bearing is easily pulled out. It is necessary to manually wipe the oil frequently. If the oil is not wiped in time, it will cause continuous small batches of scrap. Utility Model Content
[0003] In view of the above problems, this utility model proposes a push rod mechanism for press-fitting ABS eccentric bearings.
[0004] The technical solution of this utility model: A push rod mechanism for press-fitting an ABS eccentric bearing, the push rod mechanism includes a push rod, the lower end face of the push rod being a plane; the push rod moves downward to press-fit the ABS eccentric bearing, and during press-fitting, the lower end face of the push rod contacts the ABS eccentric bearing; a plurality of small holes are evenly distributed on the lower end face of the push rod, an air passage is provided inside the push rod, the air passage connects to each small hole, and the air passage connects to an air source.
[0005] Further refining the above technical solution, a cavity is set inside the top rod, and the cavity is the air passage.
[0006] Further refining the above technical solution, the upper end of the cavity is open, and the opening is a connection port for connecting to the air source.
[0007] To further refine the above technical solution, a pressure regulating valve is installed at the opening. The airflow entering the cavity is adjusted by the pressure regulating valve.
[0008] The advantages of this utility model are that it has a reasonable design and simple structure. The airflow is blown out through each small hole, which can remove the grease adhering to the lower end face of the top rod and effectively prevent the eccentric bearing from being carried out. There is no need for manual oiling, which improves work efficiency and reduces costs. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the push rod mechanism for press-fitting ABS eccentric bearings.
[0010] Figure 2 yes Figure 1 A magnified view of a portion of the image.
[0011] In the diagram, 1 is the push rod, 2 is the small hole, 3 is the cavity, 4 is the air source, 5 is the pressure regulating valve, and 6 is the ABS eccentric bearing. Detailed Implementation
[0012] like Figure 1-2As shown, a push rod mechanism for press-fitting ABS eccentric bearings includes a push rod 1. The lower end face of the push rod 1 is a plane. Several small holes 2 are evenly distributed on the lower end face of the push rod 1. A cavity 3 is provided inside the push rod 1. The cavity 3 is connected to each small hole 2. The upper end of the cavity 3 is open and connected to an air source 4 through the opening. A pressure regulating valve 5 is installed at the opening. The push rod 1 moves downward and presses in the ABS eccentric bearing 6. During the pressing process, the lower end face of the push rod 1 contacts the ABS eccentric bearing 6.
[0013] The above embodiments are only for illustrating the technical concept and features of the utility model, and are intended to enable those skilled in the art to understand the content of the utility model and implement it accordingly. They should not be construed as limiting the scope of protection of the utility model. All equivalent changes or modifications made in accordance with the spirit and essence of the utility model should be covered within the scope of protection of the utility model.
Claims
1. A push rod mechanism for press-fitting an ABS eccentric bearing, the push rod mechanism comprising a push rod, the lower end face of the push rod being a plane; the push rod descends to press-fit the ABS eccentric bearing, and during press-fitting, the lower end face of the push rod contacts the ABS eccentric bearing; characterized in that, The lower end face of the push rod is provided with a number of small holes evenly distributed. An air passage is provided inside the push rod, and the air passage is connected to each small hole and an air source.
2. The push rod mechanism for press-fitting an ABS eccentric bearing according to claim 1, characterized in that, A cavity is set inside the top rod, and the cavity is the air passage.
3. The push rod mechanism for press-fitting an ABS eccentric bearing according to claim 2, characterized in that, The cavity has an opening at its upper end, which is a connection port for connecting to a gas source.
4. The push rod mechanism for press-fitting an ABS eccentric bearing according to claim 3, characterized in that, A pressure regulating valve is installed at the opening.
