CN205243671U

CN205243671U - Tunnel type engine crankshaft intermediate shaft bearing seat

Info

Publication number: CN205243671U
Application number: CN201521114467.5U
Authority: CN
Inventors: 张恒斌; 李岩; 吕婧; 王亦伟; 杜宁甫
Original assignee: Nanchang Intercontinental Automotive Engineering Technology Co Ltd
Current assignee: Nanchang Intercontinental Automotive Engineering Technology Co Ltd
Priority date: 2015-12-30
Filing date: 2015-12-30
Publication date: 2016-05-18
Anticipated expiration: 2025-12-30

Abstract

The utility model provides a tunnel type engine crankshaft intermediate shaft bearing seat, its includes first one of the bearing frame of mutually supporting, bearing frame lower half, and engine oil say the machine oil passageway that is connected, bent hole of axis base surface sets up the machine oil groove, the bearing frame first with the central point central symmetry of bearing frame lower half overall dimension for bent hole of axis base. Owing to its reinforcing rib structure's effect, the impact load of absorption engine piston transmission that can be good under the higher burning explosion pressure of engine, has not only reduced the engine energy consumption to the noise and vibration of engine has effectively been reduced.

Description

A kind of tunnel type engine crankshaft middle bearing bracket

Technical field

The utility model relates to technical field of engines. Be specifically related to a kind of tunnel type engine crankshaft bearing seat.

Background technology

Along with the progress of engine technology level, engine is to energy-saving and cost-reducing, and the requirement of low noise vibrations future development is more and more higher. Engine will be saved energy and reduce the cost, and improves economy, need to alleviate each parts own wt on the one hand, reduces inertia, needs on the other hand to improve burning explosion pressure, improves the efficiency of work by combustion. But high combustion explosion pressure will certainly produce larger noise and vibration, and affect the noise and vibration performance of engine. How to coordinate the performance of engine energy consumption and noise and vibration aspect, be that engine art technical staff needs the problem solving for a long time always.

Tunnel type engine, the form that mainly refers to its installation position of drive shafting is the structure of tunnel type, engine crankshaft, after assembling bearing block, packs into enter the form in tunnel in the crankshaft installed seat hole of engine tunnel type. The relative dissection type of this engine body structure, planer-type housing construction have good mechanical strength and positioning precision. Meanwhile, the crankshaft bearing seat of tunnel type engine is as the vital part that connects moving component and engine body, and its architectural characteristic, mechanical property can have a strong impact on the serviceability of engine, and noise and vibration performance.

Utility model content

The purpose of this utility model is to provide a kind of tunnel type engine crankshaft middle bearing bracket, reduces engine weight, and reduces the noise and vibration of engine.

For achieving the above object, the utility model provides following technical scheme:

A kind of tunnel type engine crankshaft middle bearing bracket, it comprises the bearing block first half, the bearing block Lower Half that cooperatively interact, the oil passageway being connected with engine lubrication oil duct, mounting bolt hole, alignment pin, bearing block surface arranges reinforcement, and crankshaft base hole surface arranges machine oil groove, and the described bearing block first half and bearing block Lower Half appearance and size are with respect to the central point Central Symmetry in crankshaft base hole.

The described bearing block first half and bearing block Lower Half inside are provided with an oil passageway, and after bearing block assembling, the oil passageway of the bearing block first half and bearing block Lower Half is not on same axis.

Described crankshaft base hole surface is provided with machine oil groove, and machine oil groove is connected with oil passageway.

Two mounting bolt holes of the described bearing block first half and bearing block Lower Half are symmetrically distributed in the both sides in crankshaft base hole.

Two alignment pins of the described bearing block first half and bearing block Lower Half are symmetrically distributed in the both sides in crankshaft base hole, and spacing is greater than the spacing of mounting bolt hole.

The surface of the described bearing block first half and bearing block Lower Half is provided with reinforcement, and reinforcement is perpendicular to the axis in crankshaft base hole, flushes in the edge of bearing block.

The material of the described bearing block first half and bearing block Lower Half is aluminium alloy.

The beneficial effects of the utility model are:

The tunnel type engine crankshaft middle bearing bracket that the utility model provides, due to the effect of its reinforcing rib structure, the shock loading that absorption engine piston that can be good transmits out, under the higher burning explosion pressure of engine, not only reduce engine energy consumption, and effectively reduced the noise and vibration of engine. The bolt hole of bearing block inside, oil passageway, the Structure Decreasing of reinforcement the material consumption of bearing block body, simultaneously, owing to using the material of aluminium alloy, weight obviously alleviates, and is ensureing, under the prerequisite of engine rigidity, to have reduced engine energy consumption.

Brief description of the drawings

The overall construction drawing of the bearing block that Fig. 1 provides for the utility model embodiment.

The counterface structure chart of the bearing block that Fig. 2 provides for the utility model embodiment.

The bearing block oil passageway place cutaway view that Fig. 3 provides for the utility model embodiment.

Description of reference numerals:

The 1-bearing block first half, 2-bearing block Lower Half, 3-oil passageway, 4-bolt hole, 5-crankshaft base hole, 6-cylinder body mating surface, 7-reinforcement, 8-alignment pin, 9-machine oil groove, 10-bearing shell draw-in groove, 11-mating surface.

Detailed description of the invention

As shown in Figures 1 to 3, a kind of tunnel type engine crankshaft middle bearing bracket that the utility model embodiment provides, it comprises the bearing block first half 1, the bearing block Lower Half 2 that cooperatively interact, the oil passageway 3 being connected with engine lubrication oil duct, bolt hole 4 for assembling, alignment pin 8, bearing block surface arranges reinforcement 7,5 surfaces, crankshaft base hole arrange machine oil groove 9, the described bearing block first half 1 and the central point Central Symmetry of bearing block Lower Half 2 appearance and sizes with respect to crankshaft base hole 5.

Particularly, the described bearing block first half 1 is provided with an oil passageway 3 with second 2 inside of bearing block, and after bearing block assembling, the bearing block first half 1 and bearing block second 2 at mating surface 11 places near, the oil passageway 3 of the bearing block first half 1 and bearing block Lower Half 2 is not on same axis, such structure is conducive to lubricating cylinders oil and enters machine oil groove 9 with higher pressure, strengthen lubricating engine crankshaft, 5 surfaces, described crankshaft base hole are provided with machine oil groove 9, machine oil groove 9 is connected with oil passageway 3, 5 surfaces, crankshaft base hole are provided with bearing shell draw-in groove 10, be used for installing crankshaft bearing liner and location.

Particularly, two mounting bolt holes 4 of the described bearing block first half 1 and bearing block Lower Half 2 are symmetrically distributed in the both sides in crankshaft base hole 5, two alignment pins 8 of the described bearing block first half 1 and bearing block Lower Half 2 are symmetrically distributed in the both sides in crankshaft base hole 5, and spacing is greater than the spacing of mounting bolt hole 4. Wider alignment pin distance makes bearing block can be easy to locate accurately in the time of assembling, has improved the stability of product quality when convenient installation.

Further, the described bearing block first half 1 is provided with reinforcement 7 with the surface of bearing block Lower Half 2, and reinforcement 7 is perpendicular to the axis in crankshaft base hole 5, flush in the edge cylinder body mating surface 6 of bearing block, because it decomposes the effect of the structure of the reinforcement 7 of crankshaft base hole 5 place's shock loadings, the shock loading that absorption engine piston that can be good transmits out, under the higher burning explosion pressure of engine, not only reduce engine energy consumption, and effectively reduced the noise and vibration of engine.

Further, the bolt hole 4 of bearing block inside, oil passageway 3, the Structure Decreasing of reinforcement 7 material consumption of bearing block body, simultaneously, owing to using the material of aluminium alloy, weight obviously alleviates, ensureing, under the prerequisite of engine rigidity, to have reduced engine energy consumption.

Claims

1. a tunnel type engine crankshaft middle bearing bracket, it comprises the bearing block first half, the bearing block Lower Half that cooperatively interact, the oil passageway being connected with engine lubrication oil duct, mounting bolt hole, alignment pin, bearing block surface arranges reinforcement, and crankshaft base hole surface arranges machine oil groove, it is characterized in that, the described bearing block first half and bearing block Lower Half appearance and size are with respect to the central point Central Symmetry in crankshaft base hole.

2. a kind of tunnel type engine crankshaft middle bearing bracket according to claim 1, it is characterized in that, the bearing block first half and bearing block Lower Half inside are provided with an oil passageway, and after bearing block assembling, the oil passageway of the bearing block first half and bearing block Lower Half is not on same axis.

3. a kind of tunnel type engine crankshaft middle bearing bracket according to claim 1, is characterized in that, crankshaft base hole surface is provided with machine oil groove, and machine oil groove is connected with oil passageway.

4. a kind of tunnel type engine crankshaft middle bearing bracket according to claim 1, is characterized in that, two mounting bolt holes of the bearing block first half and bearing block Lower Half are symmetrically distributed in the both sides in crankshaft base hole.

5. a kind of tunnel type engine crankshaft middle bearing bracket according to claim 1, is characterized in that, two alignment pins of the bearing block first half and bearing block Lower Half are symmetrically distributed in the both sides in crankshaft base hole, and spacing is greater than the spacing of mounting bolt hole.

6. a kind of tunnel type engine crankshaft middle bearing bracket according to claim 1, is characterized in that, the surface of the bearing block first half and bearing block Lower Half is provided with reinforcement, and reinforcement is perpendicular to the axis in crankshaft base hole.

7. a kind of tunnel type engine crankshaft middle bearing bracket according to claim 1, is characterized in that, the material of the bearing block first half and bearing block Lower Half is aluminium alloy.