CN218992108U

CN218992108U - Crankshaft connecting rod structure

Info

Publication number: CN218992108U
Application number: CN202222535057.4U
Authority: CN
Inventors: 李祺祺
Original assignee: Hebei Aoying Energy Technology Co ltd
Current assignee: Hebei Aoying Energy Technology Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-05-09
Anticipated expiration: 2032-09-26

Abstract

The utility model discloses a crankshaft connecting rod structure, which comprises a connecting handle, wherein two ends of the connecting handle are respectively connected with a big head end and a small head end, a big head bearing is arranged in the big head end, and a small head bearing is arranged in the small head end; the connecting handle is arranged in a hollow way, and a T-shaped oil injection pipe is arranged in the connecting handle; two ends of the shoulder part of the oil injection pipe are respectively communicated with the oil injection hole on the connecting handle, and the bottom of the oil injection pipe is communicated with the oil injection hole on the small end; the oil filling hole on the small end is communicated with the oil groove on the outer ring body of the small end bearing, and the oil groove is communicated with the inside of the small end bearing through the oil hole. The crankshaft connecting rod structure of the structure further reduces the weight of the crankshaft connecting rod and facilitates the addition of lubricating oil to the small-end bearing.

Description

Crankshaft connecting rod structure

Technical Field

The utility model relates to the technical field of crankshaft connecting rods, in particular to a crankshaft connecting rod structure.

Background

A crankshaft connecting rod is a device that converts the reciprocating motion of a piston into rotational motion of a crankshaft, or vice versa. In order to prolong the service life of the bearing, an oil filling hole is usually arranged on the crankshaft connecting rod. Taking a quick sharpening connecting rod as an example, a strip groove is formed in the connecting handle, two ends of the strip groove are respectively connected with oil injection holes in the small end and the large end, during lubrication, lubricating oil is directly injected into the strip groove, and the lubricating oil enters the bearing along the strip groove. The oiling mode is easy to cause lubricating oil waste, and the oiling speed is relatively low.

Disclosure of Invention

The utility model aims to provide a novel crankshaft connecting rod structure, and an oil pipe is directly arranged at a connecting handle position, so that the problems of low oil injection speed and easiness in waste of lubricating oil of the crankshaft connecting rod are solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a crankshaft connecting rod structure comprises a connecting handle, wherein two ends of the connecting handle are respectively connected with a big head end and a small head end, a big head bearing is arranged in the big head end, and a small head bearing is arranged in the small head end; the connecting handle is arranged in a hollow way, and a T-shaped oil injection pipe is arranged in the connecting handle; two ends of the shoulder part of the oil injection pipe are respectively communicated with the oil injection hole on the connecting handle, and the bottom of the oil injection pipe is communicated with the oil injection hole on the small end; the oil filling hole on the small end is communicated with the oil groove on the outer ring body of the small end bearing, and the oil groove is communicated with the inside of the small end bearing through the oil hole.

Preferably, the big end is a detachable structure and comprises a first closed body, a second closed body and a locking bolt; the first sealing body and the second sealing body enclose an annular inner groove so as to be convenient for positioning the big end bearing; the second closed body, the connecting handle and the small head end are integrated.

Preferably, the small end bearing is a needle bearing.

Preferably, the oil filling hole of the connecting handle is an internal threaded hole and is closed by a screw.

According to the crankshaft connecting rod structure with the structure, the traditional oiling mode guided by the strip groove is replaced by the oiling pipe, so that oiling is more convenient, and lubricating oil waste is not easy to cause. In addition, the hollow connecting handle can further reduce the total weight of the product, and is more suitable for complex mechanical scenes.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

fig. 2 is a schematic view of a needle bearing according to an embodiment of the present utility model.

Reference numerals

1. A locking bolt; 2. a big head end; 21. a first enclosure; 22. a second enclosure; 3. a large head bearing; 4. a wire hole; 5. a connecting handle; 6. an oil filling hole; 7. a filler pipe; 8. a small head section; 9. a small-end bearing; 10. processing a hole; 11. an oil groove; 12. and an oil hole.

Detailed Description

The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.

The crankshaft connecting rod structure comprises a connecting handle 5, a big end 2 and a small end 8, wherein the big end 2 is internally provided with a big end bearing 3 and is connected with a crankshaft, and the small end 8 is internally provided with a small end bearing 9 and is connected with a cylinder body push rod.

The connecting handle 5 is hollow, and is internally provided with a filler pipe 7. Two ends of the shoulder part of the oil filler pipe 7 are respectively communicated with the oil filler holes 6 on the connecting handle 5, and the bottom of the oil filler pipe 7 is communicated with the oil filler holes 6 on the small head end 8. Under narrow space, two oiling angles can be provided by two oiling holes 6, so that oiling operation is convenient.

The big end 2 is provided in a detachable structure and comprises a first closed body 21 and a second closed body 22. The two sealing bodies enclose an annular inner groove in the middle, so that the big end bearing 3 can be positioned conveniently. The two sides of the two sealing bodies are provided with screw holes 4 so as to be connected through the locking bolt 1. The second closure 22, stem 5 and small head end 8 are an integral component that can be directly produced by a casting process.

The small head bearing 9 in the small head end 8 adopts a needle bearing to improve the radial load and the axial load bearing capacity of the small head end 8 and reduce the consumption of lubricating oil. An annular oil groove 11 is formed in the outer ring body of the small-head bearing 9, and the oil groove 11 is communicated with the inside of the bearing through a plurality of oil holes 12. The oil groove 11 is communicated with the oil filling pipe 7 through the oil filling hole 6 on the small head end 8, so that a complete oil filling channel is formed.

In actual processing of the oil filling hole 6 of the small head end 8, the small head end 8 is usually perforated from the outer side to the inner side, so that the oil filling hole 6 of the small head end 8 can be communicated with the oil filling pipe 7 straightly. Thus, the small end 8 of the finished crankshaft connecting rod will also be left with a tooling hole 10. In use, the processing hole 10 on the small head end 8 and the oil injection hole 6 on the connecting handle 5 can be processed with internal threads and are closed by screws, so that the lubricating oil is prevented from leaking, and the oil injection maintenance period of the small head bearing 9 is prolonged.

The foregoing is a specific embodiment of the present utility model, but the scope of the present utility model should not be limited thereto. Any changes or substitutions that would be obvious to one skilled in the art are deemed to be within the scope of the present utility model, and the scope is defined by the appended claims.

Claims

1. The crankshaft connecting rod structure comprises a connecting handle, wherein two ends of the connecting handle are respectively connected with a big end and a small end, a big end bearing is arranged in the big end, and a small end bearing is arranged in the small end; two ends of the shoulder part of the oil injection pipe are respectively communicated with the oil injection hole on the connecting handle, and the bottom of the oil injection pipe is communicated with the oil injection hole on the small end; the oil filling hole on the small end is communicated with the oil groove on the outer ring body of the small end bearing, and the oil groove is communicated with the inside of the small end bearing through the oil hole.

2. The crankshaft connecting rod structure of claim 1, wherein the big end is a detachable structure comprising a first enclosure, a second enclosure, and a locking bolt; the first sealing body and the second sealing body enclose an annular inner groove so as to be convenient for positioning the big end bearing; the second closed body, the connecting handle and the small head end are integrated.

3. The crankshaft connecting rod structure of claim 1, wherein the small end bearing is a needle bearing.

4. The crankshaft connecting rod structure according to claim 1, wherein the oil injection hole of the connecting rod is an internally threaded hole and is closed by a screw.