CN213270689U

CN213270689U - Detachable engine crankshaft

Info

Publication number: CN213270689U
Application number: CN202021510577.4U
Authority: CN
Inventors: 卢占盈; 王华辉; 李晓青; 陈鹏
Original assignee: Nanchong Longgu Machinery Industry Co ltd
Current assignee: Nanchong Longgu Machinery Industry Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-05-25
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a dismantlement formula engine crankshaft, including crank body and flywheel, the fixed connecting plate that is provided with of one end of crank body, the fixed arch that is provided with on the connecting plate to the fixed stopper that is provided with of terminal surface of connecting plate, the inside of stopper has the screw hole that sets up along the radial direction of crank body. The utility model discloses in, be provided with the spacing groove on the draw-in groove, be provided with the thread groove in the spacing groove, when connecting the crank body, arrange the connecting plate in the draw-in groove, make in the protruding embedding draw-in groove, stopper embedding spacing groove simultaneously, again from in the through-hole with bolt screw in screw hole and thread groove, can be connected the crank body with the flywheel, this design plays crank drive's effect through arch and stopper, the radial direction installation of flywheel is followed to the bolt simultaneously, the shearing force that the bolt received when rotatory along with the flywheel transmits along bolt axial direction, and then make the difficult production of bolt become flexible or even fracture.

Description

Detachable engine crankshaft

Technical Field

The utility model relates to an engine crank technical field especially relates to a dismantlement formula engine crankshaft.

Background

The crankshaft is the most important component in the engine. It takes the force from the connecting rod and converts it into torque to be output by the crankshaft and drive other accessories on the engine. The crankshaft is subjected to the combined action of centrifugal force of the rotating mass, gas inertia force of periodic variation and reciprocating inertia force, so that the crankshaft is subjected to the action of bending and twisting load. When the crankshaft is assembled with the engine flying disc, the crankshaft is usually connected in a matching way through a fixing bolt, the crankshaft drives the flying disc to rotate so as to store energy and inertia outside the power stroke of the engine, and torque transmission is carried out between the crankshaft and the flying disc through the bolt.

However, most of the conventional bolts are installed along the axial direction of the crank to connect the crank and the flywheel, and the bolts can bear large shearing force under the condition of high-speed rotation of the flywheel, so that the problem that the bolts are loosened and even broken after long-term use exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems, a detachable engine crankshaft is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a dismantlement formula engine crankshaft, includes crank body and flywheel, the fixed connecting plate that is provided with in one end of crank body, the fixed arch that is provided with on the connecting plate to the fixed stopper that is provided with of terminal surface of connecting plate, the inside of stopper has the screw hole that sets up along the radial direction of crank body, the fixed lug that is provided with of terminal surface of flywheel, and have on the lug and inlay and establish connecting plate and bellied draw-in groove, have the through-hole that runs through the lug on the flywheel, and have on the inner wall of through-hole and inlay the spacing groove of establishing the spacing piece, the threaded groove that has on the spacing groove and set up along the radial direction of flywheel.

As a further description of the above technical solution:

the end face of the flywheel is provided with a groove with an annular structure.

As a further description of the above technical solution:

the end face of the flywheel, which is far away from the groove, is provided with bolt grooves with the same number as the limiting grooves.

As a further description of the above technical solution:

the limiting blocks are of a cubic structure and are provided with at least three limiting blocks.

As a further description of the above technical solution:

the threaded hole and the threaded groove can be communicated with each other, and bolts are in threaded connection inside the threaded hole and the threaded groove.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, be provided with the connecting plate on the crank body, be provided with arch and stopper on the connecting plate, be provided with the screw hole in the stopper, be provided with the lug on the flywheel, be provided with draw-in groove and through-hole on the lug, be provided with the spacing groove on the draw-in groove, when connecting the crank body, arrange the connecting plate in the draw-in groove, make in the protruding embedding draw-in groove, simultaneously in the stopper embedding spacing groove, again from in the through-hole with bolt screw in screw hole and thread groove, can be connected crank body and flywheel, this design plays crank drive's effect through arch and stopper, the radial direction installation of bolt edge flywheel simultaneously, the shearing force that the bolt received when rotatory along with the flywheel transmits along bolt axial direction, and then make the difficult production of bolt become flexible even.

2. The utility model discloses in, the tow sides of flywheel are provided with recess and bolt groove respectively, and the recess is used for alleviateing the weight of flywheel, reduces the loss of crank output, and the bolt groove is used for placing locking bolt's auto-lock nut to improve the stability of bolt-up.

Drawings

Fig. 1 is a schematic view illustrating an overall structure of a crank during disassembly according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating an overall structure of a connection plate according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating a front overall structure of a flywheel according to an embodiment of the present invention;

fig. 4 shows a schematic view of the overall structure of the back of the flywheel according to an embodiment of the present invention.

Illustration of the drawings:

1. a crank body; 2. a flywheel; 3. a connecting plate; 4. a protrusion; 5. a limiting block; 6. a threaded hole; 7. a groove; 8. a bump; 9. a card slot; 10. a through hole; 11. a limiting groove; 12. a thread groove; 13. bolt grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a detachable engine crankshaft comprises a crankshaft body 1 and a flywheel 2, wherein one end of the crankshaft body 1 is fixedly provided with a connecting plate 3, a protrusion 4 is fixedly arranged on the connecting plate 3, a limiting block 5 is fixedly arranged on the end face of the connecting plate 3, a threaded hole 6 which is arranged along the radial direction of the crankshaft body 1 is formed in the limiting block 5, a convex block 8 is fixedly arranged on the end face of the flywheel 2, a clamping groove 9 which can be embedded with the connecting plate 3 and the protrusion 4 is formed in the convex block 8, a through hole 10 which penetrates through the convex block 8 is formed in the flywheel 2, a limiting groove 11 which can be embedded with the limiting block 5 is formed in the inner wall of the through hole 10, and a threaded groove 12 which is arranged along the radial direction of the; when installing crank body 1, align draw-in groove 9 with connecting plate 3 and arch 4, with connecting plate 3 embedding draw-in groove 9 in to make stopper 5 imbed in spacing groove 11, reuse bolt through thread hole 6 and thread groove 12 fastening crank body 1 and flywheel 2, connecting plate 3, arch 4 and stopper 5 integrated into one piece help improving holistic structural strength and rigidity, recess 7 on the flywheel 2, draw-in groove 9, through-hole 10 and spacing groove 11 all adopt lathe turning to form.

Specifically, as shown in fig. 3, the end face of the flywheel 2 has a groove 7 of annular configuration. The grooves 7 are arranged to reduce the weight of the flywheel 2 and reduce the loss of the output torque of the crank body 1.

Specifically, as shown in fig. 2, fig. 3 and fig. 4, the end face of the flywheel 2 far away from the groove 7 is provided with bolt grooves 13 the same in number as the limiting grooves 11, the threaded hole 6 and the threaded groove 12 can be communicated with each other, and bolts are connected to the threaded holes in the threaded hole 6 and the threaded groove 12 in a threaded manner, and the bolts are installed in the radial direction of the flywheel 2, so that the received force is transmitted in the axial direction of the bolts, and further the bolts are not easy to be subjected to shearing force and are loosened and broken, and meanwhile, self-locking nuts are placed in the bolt grooves 13 for screwing the bolts, so that stable connection of the bolts is ensured.

Specifically, as shown in fig. 2, the limiting blocks 5 are in a cubic structure and at least three limiting blocks are provided. The limiting block 5 can be embedded in the limiting groove 11, plays a role in connecting the crank body 1 with the flywheel 2, and is used for driving the flywheel 2 to transmit and rotate.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A detachable engine crankshaft comprises a crankshaft body (1) and a flywheel (2), it is characterized in that one end of the crank body (1) is fixedly provided with a connecting plate (3), a bulge (4) is fixedly arranged on the connecting plate (3), a limiting block (5) is fixedly arranged on the end face of the connecting plate (3), a threaded hole (6) arranged along the radial direction of the crank body (1) is formed in the limiting block (5), a convex block (8) is fixedly arranged on the end face of the flywheel (2), the convex block (8) is provided with a clamping groove (9) which can be embedded with the connecting plate (3) and the bulge (4), the flywheel (2) is provided with a through hole (10) penetrating through the convex block (8), and the inner wall of the through hole (10) is provided with a limit groove (11) which can be embedded with a limit block (5), the limiting groove (11) is provided with a thread groove (12) arranged along the radial direction of the flywheel (2).

2. A disassembled engine crankshaft according to claim 1, characterised in that the end surface of the flywheel (2) has a groove (7) of annular configuration.

3. A detachable engine crankshaft according to claim 2, characterised in that the flywheel (2) has the same number of bolt grooves (13) as the number of limiting grooves (11) on its end face remote from the recess (7).

4. A disassembled engine crankshaft according to claim 1, characterized in that said stop blocks (5) are of cubic structure and are provided in at least three.

5. A disassembled engine crankshaft according to claim 1, characterised in that the threaded hole (6) and the threaded groove (12) are in communication with each other and that the inside of both is screwed with a bolt.