CN220505689U

CN220505689U - Flywheel housing assembly

Info

Publication number: CN220505689U
Application number: CN202321786721.0U
Authority: CN
Inventors: 张寿权; 黄永仲; 覃甲惠
Original assignee: Guangxi Yuchai Marine and Genset Power Co Ltd
Current assignee: Guangxi Yuchai Marine and Genset Power Co Ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-02-20
Anticipated expiration: 2033-07-07

Abstract

The utility model discloses a flywheel housing assembly, belongs to the field of flywheel housings, and solves the problems that the flywheel works unstably and the whole engine vibrates excessively due to the fact that a cantilever of a flywheel and other parts is too long relative to a near-end main bearing seat due to the fact that an existing flywheel housing is free of a journal removing supporting structure. The flywheel housing assembly comprises a flywheel housing body, a bearing seat is arranged in a central inner hole of the flywheel housing body, a bearing bush is arranged in the bearing seat, a sealing ring is arranged between the flywheel housing body and the bearing seat, and an oil seal seat is detachably arranged on one side of the bearing seat. The flywheel shell assembly can support the crankshaft journal, improve the stability of the flywheel and meet the design requirement of a high-power engine.

Description

Flywheel housing assembly

Technical Field

The present utility model relates to flywheel housings, and more particularly, to a flywheel housing assembly.

Background

The flywheel housing is one of parts of the power output end of the engine, is a safety housing of the flywheel of the energy storage part, mainly plays roles of dust prevention, protection of rotation safety of the flywheel and the like, and does not have a crankshaft journal supporting function. The existing crankshaft journal is mainly supported by a cylinder block and a main bearing cap, no additional crankshaft bearing seat component is needed, and along with the high power of an engine and the lengthening of a crankshaft rear end cantilever determined by the rear arrangement of a gear chamber, parts such as a flywheel at the power output end of the engine are caused to be overlong relative to a near-end main bearing seat cantilever, so that unstable work of the flywheel and overlarge vibration of the whole engine are easily caused, and finally, the engine cannot work normally. Therefore, the existing main bearing support structure cannot meet the design requirements of high power of an engine and a rear structure of a gear chamber.

Disclosure of Invention

The utility model aims to solve the technical problems of the prior art, and provides the flywheel housing assembly which can support the crankshaft journal, improve the stability of a flywheel and meet the design requirement of a high-power engine.

The technical scheme of the utility model is as follows: the flywheel housing assembly comprises a flywheel housing body, a bearing seat is arranged in a central inner hole of the flywheel housing body, a bearing bushing is arranged in the bearing seat, a sealing ring is arranged between the flywheel housing body and the bearing seat, and an oil seal seat is detachably arranged on one side of the bearing seat.

As a further improvement, the bearing seat comprises an integrally formed plug pipe and a lap joint pipe, the diameter of the lap joint pipe is larger than that of the plug pipe so as to form a limit step surface at the joint of the plug pipe and the lap joint pipe, the plug pipe is fixedly inserted into the central inner hole of the flywheel housing body, the lap joint pipe is lapped on the flywheel housing body, and the limit step surface is jointed with the outer edge surface of the central inner hole of the flywheel housing body.

Further, the oil seal seat is connected with the lap joint pipe of the bearing seat through a plurality of bolts.

Further, two positioning pins are arranged between the oil seal seat and the lap joint pipe of the bearing seat, and the positioning pins and the bolts are arranged in a staggered mode.

Further, a sealing gasket is arranged between the oil seal seat and the bearing seat.

Further, the sealing ring is of a double O-shaped structure.

Further, the bearing bush is in interference fit with the bearing seat.

Further, a lubricating oil groove is formed in the bearing bush.

Advantageous effects

Compared with the prior art, the utility model has the following advantages:

according to the flywheel housing assembly, the split bearing seat and the bearing bush are arranged in the central inner hole of the flywheel housing body, and the crankshaft journal is arranged in the bearing bush, so that the crankshaft journal can be supported, the stability of a flywheel is improved, the problem that the engine cannot work normally due to overlarge vibration of the whole engine is solved, and the design requirement of a high-power engine is met; and the split type structure of bearing frame and bearing bush need not bearing frame and bearing bush and change simultaneously when bearing bush wearing and tearing, only need with the bearing bush tear down change can, compare in the mode of built-in bearing, the dismouting is more convenient, also can further reduce the damage to flywheel housing body center hole, also can install the oil blanket seat under the condition that does not destroy flywheel housing body structure simultaneously, effectively prolongs the life of flywheel housing.

Drawings

FIG. 1 is a schematic diagram of a front view of the present utility model;

FIG. 2 is a schematic side sectional view of the present utility model;

FIG. 3 is a schematic diagram of the front view of the flywheel housing body of the present utility model;

FIG. 4 is a schematic diagram of a front view of a seal ring according to the present utility model;

fig. 5 is a schematic side view of a bearing housing according to the present utility model.

Wherein: the novel high-speed flywheel comprises a 1-flywheel housing body, a 2-bearing seat, a 3-bearing bushing, a 4-sealing ring, a 5-oil seal seat, a 6-locating pin, a 7-sealing gasket, an 8-lubricating oil groove, a 21-plug tube, a 22-lap tube and a 23-limiting step surface.

Detailed Description

The utility model will be further described with reference to specific embodiments in the drawings.

Referring to fig. 1-5, the flywheel housing assembly of the utility model comprises a flywheel housing body 1, wherein a bearing seat 2 is arranged in a central inner hole of the flywheel housing body 1, a bearing bush 3 is arranged in the bearing seat 2 to play a role in supporting a crankshaft journal, a sealing ring 4 is arranged between the flywheel housing body 1 and the bearing seat 2 to prevent oil leakage, and an oil seal seat 5 is detachably arranged at one side of the bearing seat 2 and used for installing an oil seal to prevent oil leakage.

According to the flywheel housing assembly, the split type bearing seat 2 and the bearing bush 3 are arranged in the central inner hole of the flywheel housing body 1, and the crankshaft journal is arranged in the bearing bush 3, so that the crankshaft journal can be supported, the stability of a flywheel is improved, the problem that the engine cannot work normally due to overlarge vibration of the whole engine is solved, and the design requirement of a high-power engine is met; and the split type structure of bearing frame 2 and bearing bush 3 need not bearing frame 2 and bearing bush 3 and change simultaneously when bearing bush 3 wears out, only need with bearing bush 3 pull down change can, compare in built-in bearing's mode, easy dismounting also can further reduce the damage to flywheel housing body 1 center hole, also can install oil blanket seat 5 under the condition that does not destroy flywheel housing body 1 structure simultaneously, effectively prolong flywheel housing 1's life.

Preferably, the bearing seat 2 comprises an integrally formed insertion pipe 21 and a lap joint pipe 22, wherein the diameter of the lap joint pipe 22 is larger than that of the insertion pipe 21 so as to form a limit step surface 23 at the joint of the insertion pipe 21 and the lap joint pipe, the insertion pipe 21 is fixedly inserted into the central inner hole of the flywheel housing body 1, the lap joint pipe 22 is lapped on the flywheel housing body 1, and the limit step surface 23 is attached to the outer edge surface of the central inner hole of the flywheel housing body 1. Adopt echelonment bearing frame 2 structure, when pressure equipment bearing frame 2, with bearing frame 2 press to spacing step face 23 with flywheel housing body 1 center hole outer edge face laminating can, the convenience is once only pressed the bearing frame 2 in place, also conveniently opens pinhole and screw hole on bearing frame 2 simultaneously, the installation of the oil blanket seat 5 of being convenient for.

Preferably, the oil seal seat 5 is connected with the lap joint pipe 22 of the bearing seat 2 through a plurality of bolts, so as to realize the detachable installation of the oil seal seat 5. Two locating pins 6 are arranged between the oil seal seat 5 and the lap joint pipe 22 of the bearing seat 2, so that the bolt holes of the oil seal seat 5 are aligned with the threaded holes on the bearing seat 2 quickly, the installation efficiency of the oil seal seat 5 is improved, and the locating pins 6 and the bolts are arranged in a staggered mode to prevent interference. Further, a sealing gasket 7 is arranged between the oil seal seat 5 and the bearing seat 2 to prevent oil leakage.

Preferably, the sealing ring 4 is of a double O-shaped structure, and is matched with the outer edge surface of the inner hole of the flywheel housing body 1, so that the tightness is ensured.

Preferably, the bearing seat 2 can be installed in the central inner hole of the flywheel housing body 1 through interference fit, or can be pressed into the central inner hole of the flywheel housing body 1 through interference, and then reinforced in a welding and fixing mode, so that the connection stability is further improved, the bearing bush 3 and the bearing seat 2 are in interference fit, and the bearing bush 3 can be detached independently when the fixed installation is met.

Preferably, a lubrication groove 8 is formed in the bearing bush 3, the lubrication groove 8 is an annular oil groove formed in the inner wall of the bearing bush 3, and lubrication between the crankshaft journal and the bearing bush 3 is achieved by injecting lubrication oil into the lubrication groove 8.

While only the preferred embodiments of the present utility model have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these do not affect the effect of the implementation of the present utility model and the utility of the patent.

Claims

1. The flywheel housing assembly comprises a flywheel housing body (1), and is characterized in that a bearing seat (2) is arranged in a central inner hole of the flywheel housing body (1), a bearing bush (3) is arranged in the bearing seat (2), a sealing ring (4) is arranged between the flywheel housing body (1) and the bearing seat (2), and an oil seal seat (5) is detachably arranged on one side of the bearing seat (2).

2. The flywheel housing assembly according to claim 1, wherein the bearing seat (2) comprises an integrally formed insertion tube (21) and a lap joint tube (22), the diameter of the lap joint tube (22) is larger than that of the insertion tube (21) so as to form a limit step surface (23) at the joint of the insertion tube and the lap joint tube (22), the insertion tube (21) is inserted and fixed in a central inner hole of the flywheel housing body (1), the lap joint tube (22) is overlapped on the flywheel housing body (1), and the limit step surface (23) is attached to an outer edge surface of the central inner hole of the flywheel housing body (1).

3. A flywheel housing assembly according to claim 2, characterized in that the oil seal seat (5) is connected to the overlap tube (22) of the bearing seat (2) by means of a plurality of bolts.

4. A flywheel housing assembly according to claim 3, characterized in that two positioning pins (6) are arranged between the oil seal seat (5) and the lap joint pipe (22) of the bearing seat (2), and the positioning pins (6) are arranged in a staggered manner with the bolts.

5. A flywheel housing assembly according to claim 3, characterized in that a gasket (7) is further provided between the oil seal seat (5) and the bearing seat (2).

6. A flywheel housing assembly according to claim 1, characterized in that the sealing ring (4) has a double "O" profile.

7. A flywheel housing assembly according to any of claims 1-5, characterized in that the bearing bush (3) is an interference fit with the bearing housing (2).

8. A flywheel housing assembly according to claim 7, characterized in that the bearing bush (3) is internally provided with a lubrication groove (8).