CN112377304A

CN112377304A - Turning mechanism

Info

Publication number: CN112377304A
Application number: CN202011386538.2A
Authority: CN
Inventors: 张寿权; 覃明智
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Marine and Genset Power Co Ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-02-19

Abstract

The invention discloses a cranking mechanism, comprising a mounting seat, a rotating shaft capable of sliding is arranged on the mounting seat, two limiting ring grooves are arranged on the rotating shaft, and the mounting seat is provided with The limit pin mechanism engaged with the limit ring groove, one end of the mounting seat is provided with a gear chamber, and the bottom end of the gear chamber is provided with a mounting flange connected with the flange port on the side wall of the engine flywheel housing One end of the rotating shaft extends into the gear chamber and is provided with a drive gear that can mesh with the flywheel teeth of the engine flywheel. The cranking mechanism of the invention belongs to the technical field of engine accessories. The rotating shaft of the mounting seat is provided with a driving gear to mesh with the flywheel teeth, and then the flywheel of the engine is easily driven to rotate by rotating the rotating shaft, thereby driving the crankshaft of the engine to rotate, and the rotation is convenient and the operation is simple. , using the principle of leverage, saving time and effort, and low labor intensity of workers.

Description

Turning mechanism

Technical Field

The invention relates to the technology of engine accessories, in particular to a turning mechanism.

Background

During assembly and maintenance of the engine, it is often necessary to turn the crankshaft. Due to the factors of large volume, heavy parts and the like, when the crankshaft of the large-sized engine is turned, the crankshaft cannot be turned by hands or a crowbar directly like a traditional small-sized engine. Therefore, there is a high necessity for an auxiliary part by which a crankshaft can be easily turned.

Disclosure of Invention

The invention aims to solve the technical problems of the prior art, and aims to provide a turning mechanism capable of rotating an engine crankshaft quickly, conveniently and labor-saving.

In order to achieve the purpose, the invention provides a turning mechanism which comprises a mounting seat, wherein a sliding rotating shaft is arranged on the mounting seat, two limiting ring grooves are formed in the rotating shaft, a limiting pin mechanism capable of being clamped with the two limiting ring grooves is arranged on the mounting seat, a gear chamber is arranged at one end of the mounting seat, a mounting flange connected with a flange port on the side wall of an engine flywheel shell is arranged at the bottom end of the gear chamber, and one end of the rotating shaft extends into the gear chamber and is provided with a driving gear capable of being meshed with flywheel teeth of an engine flywheel.

Further, the gear chamber is of a semicircular structure, and connecting terminals and connecting bolts are arranged on two sides of the mounting flange.

Furthermore, one end of the rotating shaft is provided with a conical positioning portion, the driving gear is provided with a conical hole matched with the conical positioning portion, and the end of the conical positioning portion is provided with a compression nut matched with the outer end face of the driving gear.

Furthermore, the other end of the rotating shaft is provided with a key groove.

Furthermore, the other end of the rotating shaft is provided with a check ring.

As a further improvement, the mounting seat is internally provided with shaft holes which are matched with the rotating shaft in a penetrating manner and are arranged at two ends, one side of the mounting seat is provided with a positioning hole communicated with the shaft holes, the limiting pin mechanism comprises a limiting pin which is arranged in the positioning hole and can slide, and a limiting sleeve which is arranged at an orifice of the positioning hole and is in sliding connection with the limiting pin, a spring is arranged between the inner end of the limiting pin and the limiting sleeve, and the outer end of the limiting pin is provided with a detachable handle structure.

Furthermore, the handle structure is sleeved at the outer end of the limit pin, and a bolt connected with the limit pin is arranged on the handle structure.

Furthermore, the bottom end of the limiting pin is provided with a limiting convex edge which is matched with the bottom end of the spring, and the upper end of the inner wall of the limiting sleeve is provided with a limiting step which is matched with the top end of the spring.

Furthermore, the shaft hole is of a stepped hole structure with a wide middle part and narrow two ends.

Advantageous effects

Compared with the prior art, the turning mechanism has the following beneficial effects:

according to the turning mechanism, the driving gear is arranged on the rotating shaft of the mounting seat and meshed with the flywheel teeth, and then the engine flywheel is easily driven to rotate by rotating the rotating shaft, so that the engine crankshaft is driven to rotate.

Drawings

FIG. 1 is a structural assembly cross-sectional view of the barring mechanism of the present invention;

FIG. 2 is a perspective view of the construction of the barring mechanism of the present invention;

FIG. 3 is a right side elevational view of the construction of the barring mechanism of the invention;

fig. 4 is a structural sectional view of the barring mechanism of the invention.

In the figure: 1. a mounting seat; 2. a rotating shaft; 21. a tapered locating portion; 22. a compression nut; 23. a keyway; 24. a retainer ring; 3. a limiting ring groove; 4. a limit pin mechanism; 41. a spacing pin; 42. a limiting sleeve; 43. a spring; 44. a handle structure; 45. a bolt; 46. a limiting convex edge; 5. a gear chamber; 51. a connection terminal; 52. a connecting bolt; 6. installing a flange; 7. a drive gear; 8. a shaft hole; 9. positioning holes; 10. an engine flywheel housing; 11. a flange port; 12. an engine flywheel.

Detailed Description

The invention is further described below with reference to examples, but not to be construed as being limited thereto, and any number of modifications which can be made by anyone within the scope of the claims are also within the scope of the claims.

Specific embodiments of the present invention are such that: referring to fig. 1-4, a turning mechanism comprises a mounting seat 1, a slidable rotating shaft 2 is arranged on the mounting seat 1, two limiting ring grooves 3 are arranged on the rotating shaft 2, a limiting pin mechanism 4 capable of being clamped with the two limiting ring grooves 3 is arranged on the mounting seat 1, a gear chamber 5 is arranged at one end of the mounting seat 1, a mounting flange 6 connected with a flange port 11 on the side wall of an engine flywheel housing 10 is arranged at the bottom end of the gear chamber 5, and a driving gear 7 capable of being meshed with flywheel teeth of an engine flywheel 12 is arranged at one end of the rotating shaft 2 and extends into the gear chamber 5. In this barring mechanism, can be through the flange port 11 on the gear room 5 of mount pad 1 one end and the engine flywheel shell 10 lateral wall, the inner chamber intercommunication of gear room 5 and engine flywheel shell 10, pivot 2 on the mount pad 1 can slide to the one end of gear room 5, make drive gear 7 and the meshing of flywheel tooth in the pivot 2, then drive engine flywheel 12 through rotating pivot 2 easily and rotate, thereby it is rotatory to drive engine crankshaft, and the rotation is convenient, and the operation is simple, time and labor saving, and the workman low in labor strength.

The limiting pin mechanism 4 can axially limit the rotating shaft 2 and the mounting seat 1, when the rotating shaft 2 drives the engine flywheel 12 to rotate through the driving gear 7, the limiting pin mechanism 4 is clamped with the limiting ring groove 3 at the right end to axially limit the rotating shaft 2, so that the driving gear 7 is prevented from being separated from flywheel teeth of the engine flywheel 12, and the engine flywheel 12 is stably driven to rotate; when the engine flywheel 12 and the crankshaft do not need to be driven to rotate, the limiting pin mechanism 4 can be operated to be separated from the limiting ring groove 3 at the right end, and then the rotating shaft 2 is pulled towards the right end, so that the limiting pin mechanism 4 is clamped with the limiting ring groove 3 at the left end, the rotating shaft is positioned, and the operation is simple.

In this embodiment, the housing of the engine flywheel housing 10 is provided with an assembly opening, the assembly opening is provided with a flange port 11, and the lower portion of the driving gear 7 can penetrate through the flange port 11 to be meshed with flywheel teeth of the engine flywheel 12. The gear chamber 5 is installed from the radial laminating of the outer disc of engine flywheel shell 10, compares from the installation of engine flywheel shell 10 terminal surface, and space utilization is better.

In this embodiment, the gear chamber 5 is a semicircular structure, the two sides of the mounting flange 6 are provided with the connecting terminal 51 and the connecting bolt 52, the flange plane of the mounting flange 6 is attached to the flange plane at the flange port 11, and the connecting bolt 52 penetrates through the connecting terminal 51 to be connected with the screw hole at the flange port 11, so that the gear chamber 5 of the mounting seat 1 is firmly connected with the engine flywheel housing 10.

In the present embodiment, one end of the rotating shaft 2 is provided with a conical positioning portion 21, the driving gear 7 is provided with a conical hole adapted to the conical positioning portion 21, and the end of the conical positioning portion 21 is provided with a compression nut 22 adapted to the outer end surface of the driving gear 7.

In this embodiment, the other end of the rotating shaft 2 is provided with the key groove 23, the handle can be inserted into the key groove 23, then the rotating shaft 2 is rotated through the handle, and by utilizing the lever principle, a worker can easily rotate the rotating shaft 2, so that the crankshaft of the large-scale engine can be turned manually without other power-assisted equipment.

In this embodiment, the other end of the rotating shaft 2 is provided with a retaining ring 24, which can limit the axial sliding of the rotating shaft 2, and ensure that the driving gear 7 can be meshed with the flywheel teeth of the engine flywheel 12 when the rotating shaft 2 slides to the left end.

In this embodiment, the mounting base 1 is internally provided with shaft holes 8 penetrating through the two ends thereof and adapted to the rotating shaft 2, one side of the mounting base 1 is provided with a positioning hole 9 communicated with the shaft holes 8, the limit pin mechanism 4 comprises a limit pin 41 capable of sliding arranged in the positioning hole 9 and a limit sleeve 42 arranged in the orifice of the positioning hole 9 and slidably connected with the limit pin 41, a spring 43 is arranged between the inner end of the limit pin 41 and the limit sleeve 42, and the outer end of the limit pin 41 is provided with a detachable handle structure 44. The handle structure 44 is pulled outwards, so that the limiting pin 41 is pulled outwards, the limiting pin 41 is separated from the limiting ring groove 3, the rotating shaft 2 can be pushed to slide axially, after the rotating shaft 2 slides in place, the interface of the handle structure 44 is loosened to enable the limiting pin 41 to slide inwards under the action of the rebounding force of the spring 43, the limiting pin 41 can be clamped in the limiting ring groove 3 after being reset, and therefore the rotating shaft 2 is automatically limited axially.

In this embodiment, a sleeve hole adapted to the outer end of the limit pin 41 is formed in the bottom end of the handle structure 44, the handle structure 44 is sleeved on the outer end of the limit pin 41, a plug pin 45 connected with the limit pin 41 is arranged on the handle structure 44, and the plug pin 45 is radially inserted into the sleeve hole and connected with the limit pin 41.

In this embodiment, the bottom end of the stopper pin 41 is provided with a stopper ledge 46 corresponding to the bottom end of the spring 43, and the upper end of the inner wall of the stopper sleeve 42 is provided with a stopper step corresponding to the top end of the spring 43.

In this embodiment, the outer wall of the limiting sleeve 42 is provided with an external thread connected with the hole wall of the positioning hole 9.

In this embodiment, the shaft hole 8 has a stepped hole structure with a wide middle part and narrow ends.

The above is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that several variations and modifications can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.

Claims

1. A cranking mechanism, characterized in that it comprises a mounting seat (1), the mounting seat (1) is provided with a slidable rotating shaft (2), and the rotating shaft (2) is provided with two limit positions A ring groove (3), the mounting seat (1) is provided with a limit pin mechanism (4) capable of engaging with the two limit ring grooves (3), and one end of the mounting seat (1) is provided with a limit pin mechanism (4). There is a gear chamber (5), the bottom end of the gear chamber (5) is provided with a mounting flange (6) connected with the flange port (11) on the side wall of the engine flywheel housing (10), the rotating shaft (2) One end of ) extends into the gear chamber (5) and is provided with a drive gear (7) that can mesh with the flywheel teeth of the engine flywheel (12).

2 . The cranking mechanism according to claim 1 , wherein the gear chamber ( 5 ) has a semicircular structure, and connecting terminals ( 51 ) are provided on both sides of the mounting flange ( 6 ). 3 . and connecting bolts (52).

3. A turning mechanism according to claim 1 or 2, characterized in that, one end of the rotating shaft (2) is provided with a tapered positioning portion (21), and the drive gear (7) is provided with a The tapered positioning portion (21) is adapted to a tapered hole, and the end portion of the tapered positioning portion (21) is provided with a compression nut (22) adapted to the outer end face of the drive gear (7). .

4. A turning mechanism according to claim 3, characterized in that, the other end of the rotating shaft (2) is provided with a key groove (23).

5 . The turning mechanism according to claim 4 , wherein a retaining ring ( 24 ) is provided at the other end of the rotating shaft ( 2 ). 6 .

6 . The turning mechanism according to claim 3 , characterized in that, shaft holes ( 8 ) matching with the rotating shaft ( 2 ) are provided through the two ends of the mounting seat ( 1 ), so that One side of the mounting seat (1) is provided with a positioning hole (9) communicating with the shaft hole (8), and the limiting pin mechanism (4) includes a A sliding limit pin (41) and a limit sleeve (42) slidably connected to the limit pin (41) provided at the orifice of the positioning hole (9), the limit pin ( A spring (43) is provided between the inner end of 41) and the limiting sleeve (42), and a handle structure (44) is provided at the outer end of the limiting pin (41).

7 . The turning mechanism according to claim 6 , wherein the bottom end of the handle structure ( 44 ) is provided with a sleeve hole that is adapted to the outer end of the limit pin ( 41 ). 7 . The handle structure (44) is provided with a plug pin (45) connected with the limiting pin (41).

8. A turning mechanism according to claim 6 or 7, wherein the bottom end of the limit pin (41) is provided with a limit protrusion adapted to the bottom end of the spring (43). Along (46), the upper end of the inner wall of the limiting sleeve (42) is provided with a limiting step corresponding to the top end of the spring (43).

9 . The turning mechanism according to claim 8 , wherein the shaft hole ( 8 ) is a stepped hole structure with a wide middle part and narrow ends. 10 .