CN115156842A

CN115156842A - Crankshaft assembling device

Info

Publication number: CN115156842A
Application number: CN202210653317.XA
Authority: CN
Inventors: 祝强; 化瑞峰; 容奕; 姜健; 邓创达; 梁明峰; 梁承炎; 刘沃鹏; 黄峄演; 陈禹源; 刘越
Original assignee: Guangzhou Haojin Motorcycle Group Co ltd
Current assignee: Guangzhou Haojin Motorcycle Group Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-10-11

Abstract

The invention discloses a crankshaft assembling device, which is used for installing a crankshaft into a bearing and comprises: the support is used for arranging a bearing; the drawing device comprises a drawing piece and a driving device, and the drawing piece can penetrate into an inner hole of the bearing; the drawing piece is provided with a connecting structure used for being connected with the crankshaft, and the driving device is used for driving the drawing piece to move so as to draw the crankshaft to be installed in the bearing. The crankshaft assembling device provided by the invention can be used for arranging the bearing on the support, connecting the drawing piece with the crankshaft through the connecting structure after penetrating through the bearing inner hole, and then driving the drawing piece to draw the crankshaft by the driving device so as to enable the crankshaft to be installed in the bearing.

Description

Crankshaft assembling device

Technical Field

The invention relates to the technical field of motorcycle engine manufacturing, in particular to a crankshaft assembling device.

Background

Crankshafts are important components in motorcycle engines and require installation of the crankshaft into the engine's bearings during assembly of the engine.

The assembly mode of present crankshaft bearing is heating the bearing earlier usually and makes its inflation, then strikes the bent axle and gets into the bearing, and this assembly mode can make the bearing damage the fitting surface of ball and bearing easily because of being heated the inflation on the one hand, and the influence is rotated, and on the other hand, the bent axle receives to strike also appears warping easily. In conclusion, the existing assembly mode can seriously affect the quality of the engine, and the assembly efficiency is low.

Disclosure of Invention

The present invention has been made to solve at least one of the problems occurring in the prior art, and an object of the present invention is to provide a crankshaft assembling apparatus which is capable of improving the assembling quality and the assembling efficiency of a crankshaft.

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

a crankshaft assembly device for installing a crankshaft into a bearing, comprising:

the support is used for arranging a bearing;

the drawing device comprises a drawing piece and a driving device, wherein the drawing piece can penetrate into an inner hole of the bearing; the drawing piece is provided with a connecting structure used for being connected with the crankshaft, and the driving device is used for driving the drawing piece to move so as to draw the crankshaft to be installed in the bearing.

Preferably, the connecting structure comprises a threaded hole arranged on the drawing piece, and the threaded hole is matched with a screw rod end at the end part of the crankshaft.

Preferably, the driving device can also drive the pulling piece to rotate so that the pulling piece can be screwed with or separated from the crankshaft.

Preferably, the support is provided with an avoiding opening aligned with the bearing arranged on the support, and the avoiding opening is used for the drawing piece to pass through.

Preferably, the device further comprises a position detection device, wherein the position detection device is used for detecting the position of the drawing piece.

Preferably, the drawing device further comprises a control device, and the control device can control the start and stop of the drawing device according to the detection result of the position detection device.

Preferably, the support is used for placing an engine shell, and the bearing is arranged on the engine shell.

Preferably, a soft backing plate is arranged on the support and used for being arranged between the engine shell and the support in a cushioning mode.

Preferably, a positioning structure for positioning the bearing is arranged on the support.

Preferably, the driving means comprises hydraulic means for driving the movement of the drawing member.

The beneficial effects of the invention are: in the crankshaft assembling device, the bearing can be arranged on the support, the drawing piece penetrates through the inner hole of the bearing and then is connected with the crankshaft through the connecting structure, the driving device drives the drawing piece to draw the crankshaft, so that the crankshaft is installed in the bearing, and in the process, the rest part of the crankshaft is free from external force, so that the crankshaft can be effectively prevented from being deformed, the bearing does not need to be heated, the bearing is not easily damaged due to thermal expansion, the assembling quality can be effectively improved, the quality of an engine is ensured, the assembling process is effectively simplified, and the assembling efficiency can be effectively improved.

Drawings

The invention is described in further detail below with reference to the drawings and the detailed description.

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

fig. 2 is a schematic diagram of the application of the preferred embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10. a support; 11. avoiding the mouth; 12. a backing plate; 20. a drawing device; 21. drawing the piece; 22. a drive device; 23. a threaded hole; 31. a crankshaft; 32. a bearing; 33. an engine housing.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, unless otherwise specifically limited, terms such as set, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.

Referring to fig. 1 and 2, a preferred embodiment of the present invention, a crankshaft assembling apparatus for installing a crankshaft 31 into a bearing 32, includes: a support 10 for mounting a bearing 32; the drawing device 20 comprises a drawing piece 21 and a driving device 22, wherein the drawing piece 21 can penetrate into an inner hole of the bearing 32; the pulling piece 21 is provided with a connecting structure for connecting with the crankshaft 31, and the driving device 22 is used for driving the pulling piece 21 to move so as to pull the crankshaft 31 to be installed in the bearing 32. In the crankshaft assembling device provided by the invention, in use, the bearing 32 can be arranged on the support 10, the drawing piece 21 penetrates through the inner hole of the bearing 32 and then is connected with the crankshaft 31 through the connecting structure, and then the driving device 22 drives the drawing piece 21 to draw the crankshaft 31 so as to enable the crankshaft 31 to be installed in the bearing 32.

As a preferred embodiment of the present invention, it may also have the following additional technical features:

in this embodiment, the connection structure includes the threaded hole 23 disposed on the drawing member 21, the threaded hole 23 is adapted to the screw end at the end of the crankshaft 31, so that the drawing member 21 can be connected to the crankshaft 31 by directly using the screw end at the end of the crankshaft 31, and the connection is firm, not easy to loosen, and not easy to damage the crankshaft 31. In other embodiments, the connecting structure may be other suitable structures such as a clamping jaw structure for clamping the crankshaft 31, but is not limited thereto.

In this embodiment, the driving device 22 can also drive the pulling member 21 to rotate so that the pulling member 21 can be screwed with or separated from the crankshaft 31, thereby automatically realizing connection and release of the pulling member 21 and the crankshaft 31, contributing to improving the degree of automation, further improving the production efficiency, and reducing the labor intensity of workers.

In this embodiment, the support 10 is provided with the relief opening 11 aligned with the bearing 32 disposed thereon, and the relief opening 11 is used for the drawing member 21 to pass through, so that the support 10 can be used for bearing the reverse force in the drawing process, which is beneficial to simplifying the structure. In other embodiments, the drawing device 20 can also select a direction from the bearing 32 to the support 10 for drawing, and accordingly, a limit structure capable of limiting the bearing 32 from a surface of the bearing 32 facing away from the support 10 needs to be disposed on the support 10, and a person skilled in the art can flexibly select the limit structure according to needs.

In this embodiment, the device further comprises a position detection device, and the position detection device is used for detecting the position of the drawing member 21, so that whether the crankshaft 31 and the bearing 32 are assembled in place can be accurately known by detecting the position of the drawing member 21, which is helpful for ensuring the assembly quality. The position detection device can adopt common detection structures such as a contact switch, an infrared detector and the like.

In this embodiment, the drawing device further includes a control device, and the control device can control the start and stop of the drawing device 20 according to the detection result of the position detection device, so that the drawing operation can be automatically stopped after the crankshaft 31 and the bearing 32 are assembled in place, the crankshaft 31 or the bearing 32 is prevented from being damaged, and the automatic production is facilitated. In other embodiments, the pulling device 20 may be manually controlled by a worker according to the detection result of the detection device, or a corresponding blocking structure may be provided to limit the moving distance of the pulling member 21, so as to avoid over-pulling. The control device has wide application, can adopt common control structures such as a PLC, a PC and the like, and is not detailed herein.

In the present embodiment, the support 10 is used for mounting the engine case 33, and the bearing 32 is mounted on the engine case 33, so that the mounting and positioning are convenient, and in other embodiments, a positioning hole or the like may be provided on the support 10 to directly mount the bearing 32, so that the bearing 32 and the crankshaft 31 are assembled first, and then the bearing 32 and the crankshaft 31 are assembled on the engine case 33 in a subsequent process.

In the embodiment, the soft backing plate 12 is arranged on the support 10, and the backing plate 12 is used for being arranged between the engine shell 33 and the support 10 in a cushioning manner, so that the engine shell 33 can be prevented from being deformed due to too concentrated stress and being scratched and damaged with the support 10 in the drawing process, and the product quality can be ensured. The backing plate 12 can be made of common soft materials such as wood plate, rubber, plastic and the like, and can be flexibly selected by a person skilled in the art according to needs.

The driving device 22 includes a hydraulic device for driving the drawing member 21 to move, and can provide a large driving force, but the driving device 22 may also adopt other suitable driving structures such as an air cylinder, a transmission mechanism driven by a motor, and the like, and is not limited thereto. In the present embodiment, the driving device 22 may further include a driving structure such as a motor for driving the pulling member 21 to rotate so as to be screwed or loosened with the crankshaft 31.

The support 10 can be provided with the location structure who is used for fixing a position bearing 32, so conveniently aligns bearing 32 with drawing piece 21, convenient operation, and this location structure can adopt structures such as recess directly to bearing 32 location, in this embodiment, then the accessible realizes the location to bearing 32 to the location of engine housing 33, and corresponding location structure can adopt can with the location of engine housing 33 lateral wall butt often used location structure such as boss.

In this embodiment, the support 10 is transversely disposed, the engine case 33 is directly disposed on the support 10, the pulling member 21 passes through the avoiding hole from the lower side to be connected with the crankshaft 31, and the crankshaft 31 is pulled through the inner hole of the bearing 32 from the top to the bottom. In other embodiments, the arrangement mode of the support 10 and the moving direction of the pulling element 21 can be flexibly adjusted according to the need, for example, the support 10 can be laterally arranged, the pulling element 21 can be moved laterally for pulling, and the like, but not limited thereto.

The above additional technical features can be freely combined and used in addition by those skilled in the art without conflict.

The above description is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.

Claims

1. A crankshaft assembly device for mounting a crankshaft (31) in a bearing (32), comprising:

a support (10) for mounting a bearing (32);

the drawing device (20) comprises a drawing piece (21) and a driving device (22), wherein the drawing piece (21) can penetrate into an inner hole of the bearing (32); the drawing piece (21) is provided with a connecting structure used for being connected with a crankshaft (31), and the driving device (22) is used for driving the drawing piece (21) to move so as to draw the crankshaft (31) to be installed in the bearing (32).

2. A crankshaft assembly device according to claim 1, characterized in that the connection structure comprises a threaded hole (23) provided on the pull member (21), the threaded hole (23) being adapted to the screw end of the crankshaft (31).

3. A crankshaft assembly device according to claim 2, characterized in that the driving means (22) are also able to drive the pull-out element (21) in rotation so as to enable the pull-out element (21) to be screwed or unscrewed from the crankshaft (31).

4. A crankshaft assembly device according to claim 1, characterized in that the support (10) is provided with an escape opening (11) aligned with the bearing (32) placed thereon, said escape opening (11) being intended for the passage of the pull-off member (21).

5. A crankshaft assembly device according to claim 1, further comprising position detecting means for detecting the position of the pull member (21).

6. A crankshaft assembly arrangement according to claim 5, further comprising control means adapted to control the pulling means (20) to be switched on and off in dependence on the result of the position detection means.

7. A crankshaft assembly arrangement according to claim 1, characterized in that the holder (10) is adapted to receive an engine housing (33), and that the bearing (32) is mounted on the engine housing (33).

8. A crankshaft assembly arrangement according to claim 7, characterized in that a soft shim plate (12) is arranged on the carrier (10), said shim plate (12) being intended to be placed between the engine housing (33) and the carrier (10).

9. A crankshaft assembly arrangement according to claim 1, characterized in that the carrier (10) is provided with positioning means for positioning the bearing (32).

10. A crankshaft assembly device according to claim 1, characterized in that the driving means (22) comprise hydraulic means for driving the pull member (21) in movement.