CN217926733U

CN217926733U - Detachable crankshaft structure

Info

Publication number: CN217926733U
Application number: CN202222312855.0U
Authority: CN
Inventors: 郑娟; 王丹; 赵墅铠; 冯赵; 贲国祥; 张春祥
Original assignee: Jiangsu Yangli Forging Press Co ltd
Current assignee: Jiangsu Yangli Forging Press Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-11-29
Anticipated expiration: 2032-08-31

Abstract

The utility model discloses a but split crankshaft structure contains bent axle main part section and bent axle canned paragraph, and bent axle main part section includes the main shaft section and for the eccentric section of arranging of the central line of main shaft section, and the bent axle canned paragraph includes the outer linkage segment relative with the main shaft section and the eccentric linkage segment relative with the eccentric section, and the eccentric linkage segment passes through internal thread cylindric lock and screw connection with the eccentric section. The utility model discloses a but split type bent axle structure through with bent axle design split type structure, reduces and makes the difficulty, the installation is dismantled simply, the debugging of being convenient for, can satisfy the many demands of trade to the both ends main shaft is concentric, realizes that the both arms support, makes the structure more stable, and rigidity is also better, has increased centre of rotation's precision, but also easy dismounting in narrow and small space moreover.

Description

Detachable crankshaft structure

Technical Field

The utility model belongs to the technical field of machining equipment technique and specifically relates to a but split type bent axle construction is related to.

Background

The crankshaft is widely applied to equipment such as a press machine, an eccentric mechanism, a slice shoveling machine and the like. Most of the existing crankshafts are integral, are easy to be subjected to unbalance loading force and have high processing cost. When the rotating speed of the equipment is high, rolling bearings are required to be installed at the two-end support and the crank throw positions of the integral eccentric crankshaft. However, when the crank stroke is large, in order to meet the speed requirement, the diameter of the eccentric shaft position can only be increased for installing the rolling bearing, the structure is increased accordingly, the structure is not compact enough, and the bearing is inconvenient to install. And a crank type crankshaft supported by a single arm is adopted in part of the structure, so that although the diameter of the crank is reduced, the crank is supported by the single arm, the offset load is easily applied to the crank, and the processing is difficult, so that a more stable, reliable and convenient structural measure is required to be adopted to meet the requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's defect, provide a but split type crankshaft structure, solve among the prior art crank structure installation and make difficulty, the unstable technical problem of structure.

The purpose of the utility model is realized like this: the utility model provides a but split crankshaft structure, contains bent axle main part section and bent axle fixed segment, and bent axle main part section includes the main shaft section and for the eccentric section of the central line eccentric arrangement of main shaft section, and bent axle fixed segment includes the outer linkage segment relative with the main shaft section and the eccentric linkage segment relative with eccentric section, and eccentric linkage segment passes through internal thread cylindric lock and screw connection with eccentric section.

The utility model discloses a but split type bent axle structure through with bent axle design split type structure, reduces and makes the difficulty, the installation is dismantled simply, the debugging of being convenient for, can satisfy the many demands of trade to the both ends main shaft is concentric, realizes that the both arms support, makes the structure more stable, and rigidity is also better, has increased centre of rotation's precision, but also easy dismounting in narrow and small space moreover.

As a further improvement of the utility model, the end of the eccentric section is provided with the plug connector, and the eccentric connecting section is provided with the plug connector matched with the plug connector. The eccentric section and the eccentric connecting section adopt a plug-in structure, so that the connection is convenient, the rotary motion is more stable, and the connection reliability is ensured.

As the utility model discloses a further improvement, the internal thread cylindric lock is connected in the position that eccentric section terminal surface leaned on down, and the screw further improves the connection reliability including connecting at the first screw at eccentric section terminal surface center and the second screw of symmetry setting in first screw both sides, prevents to connect in the rotary motion process not hard up.

As the utility model discloses a further improvement, bent axle main part section integrated into one piece, bent axle canned paragraph integrated into one piece, but the whole two segmentation structures that adopt of split formula bent axle structure, both easy to assemble reduce connection work load again.

As the utility model discloses a further improvement, main shaft section outer end is equipped with the transverse connection groove, and outer linkage section outer end is equipped with the connecting axle to the crank structure both ends can be connected by drive and roll bearing structure respectively, reduce the influence of unbalance loading power to connecting the reliability, improve rotary motion's stability.

Drawings

Fig. 1 is a schematic view of the detachable crankshaft structure of the present invention.

Fig. 2 is a rear side view of the crankshaft fixing section of the detachable crankshaft structure of the present invention.

The crankshaft comprises a crankshaft main body section 1, an eccentric section 1A, a transverse connecting groove 1B, a crankshaft fixing section 2, an eccentric connecting section 2A, a connecting shaft 2B, a cylindrical pin with internal threads 3, a first screw 4 and a second screw 5.

Detailed Description

The detachable crankshaft structure as shown in fig. 1-2 comprises a crankshaft main section 1 and a crankshaft fixing section 2. Crankshaft main part section 1 and crankshaft fixed segment 2 integrated into one piece respectively, can the whole two segmentation structures that adopt of split formula crankshaft structure, both easy to assemble reduce connection work load again.

The crankshaft main body section 1 includes a main shaft section and an eccentric section 1A arranged eccentrically with respect to a center line of the main shaft section. The crankshaft fixing section 2 includes an outer connecting section opposite to the main shaft section and an eccentric connecting section 2A opposite to the eccentric section 1A. The main shaft section outer end is equipped with horizontal spread groove 1B, and outer linkage segment outer end is equipped with connecting axle 2B to the bent axle structure both ends can be connected by drive and roll bearing structure respectively, reduce the influence of unbalance loading power to connecting the reliability, improve rotary motion's stability. The eccentric section 1A is connected with the eccentric connecting section 2A in an inserting mode, rotary eccentric motion is achieved through combination of the internal thread cylindrical pins 3, and the end face of the eccentric section is locked through screws to prevent follow-up rotation.

Specifically, the tail end of the eccentric section 1A is provided with a plug connector, and the eccentric connecting section 2A is provided with a plug groove matched with the plug connector. The internal thread cylindric lock 3 is connected in the position that the 1A terminal surface of eccentric section leaned on down, and the screw is including connecting at the first screw 4 of 1A terminal surface center of eccentric section and the symmetry set up the second screw 5 in first screw 4 both sides to ensure to connect the reliability, prevent to connect in the rotary motion process and become flexible.

When the crankshaft main body section 1 and the crankshaft fixing section 2 are installed, firstly, the crankshaft main body section 1 and the crankshaft fixing section 2 are aligned to the center, then, the crankshaft main body section and the crankshaft fixing section are fixed through the cylindrical pin 3 with the internal threads, and then, the crankshaft main body section and the crankshaft fixing section are locked through the first screw 4 and the second screw 5 to form a whole.

The detachable crankshaft structure breaks the integral structure of the traditional crankshaft, changes the integral structure into a split structure, increases the fixation of two ends, makes the structure more stable, has better rigidity, improves the precision of a rotation center, and is convenient to disassemble and assemble in a narrow space. The beneficial characteristics are also verified in engineering practice and application processes, and good effects are obtained.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. The utility model provides a removable fraction crankshaft structure which characterized in that: the crankshaft fixing section comprises an outer connecting section opposite to the main shaft section and an eccentric connecting section opposite to the eccentric section, and the eccentric connecting section is connected with the eccentric section through an internal thread cylindrical pin and a screw.

2. The detachable crankshaft structure of claim 1, wherein: the tail end of the eccentric section is provided with a plug-in connector, and the eccentric connecting section is provided with a plug-in groove matched with the plug-in connector.

3. The detachable crankshaft structure of claim 1, wherein: the inner thread cylindrical pin is connected to the position, close to the lower portion, of the end face of the eccentric section, and the screws comprise first screws connected to the center of the end face of the eccentric section and second screws symmetrically arranged on two sides of each first screw.

4. A splittable crankshaft structure, according to any one of claims 1-3, wherein: the crankshaft main body section is integrally formed, and the crankshaft fixing section is integrally formed.

5. A splittable crankshaft structure, according to any one of claims 1-3, wherein: the main shaft section outer end is equipped with horizontal spread groove, outer linkage segment outer end is equipped with the connecting axle.