CN220248691U - Spliced middle bearing seat - Google Patents
Spliced middle bearing seat Download PDFInfo
- Publication number
- CN220248691U CN220248691U CN202321450292.XU CN202321450292U CN220248691U CN 220248691 U CN220248691 U CN 220248691U CN 202321450292 U CN202321450292 U CN 202321450292U CN 220248691 U CN220248691 U CN 220248691U
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- Prior art keywords
- seat
- middle bearing
- pair
- bearing seat
- hole
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- 238000005728 strengthening Methods 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 description 6
- 238000012938 design process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a spliced middle bearing seat, which belongs to the technical field of middle bearing seats, and comprises Qu Zhou holes, wherein the crank bearing seat holes are positioned in an inner cavity of an engine and are matched with crank journals, the outer ends of the crank bearing seat holes are respectively provided with a middle bearing seat lower seat and a middle bearing seat upper seat, the middle bearing seat lower seat and the middle bearing seat upper seat are in threaded connection, a pair of outer circular oil inlets are formed in the outer circular surface of the middle bearing seat lower seat, and a pair of integral mounting holes are formed in the outer end of the middle bearing seat lower seat.
Description
Technical Field
The utility model relates to the technical field of middle bearing seats, in particular to a spliced middle bearing seat.
Background
The bearing seat is a component for supporting the shaft, and the benign cooperation between the shaft and the bearing seat not only can provide supporting force for the shaft, but also can reduce the friction force between the shaft and the bearing seat and improve the rotating speed of the shaft. The tunnel engine mainly refers to a structure in which the crankshaft mounting position is in a tunnel mode, namely, after the bearing seat is assembled, the engine crankshaft is arranged in a tunnel-type crankshaft mounting seat hole of the engine in a mode of entering the tunnel. In tunnel engines, it is generally necessary to add an intermediate bearing seat at an appropriate position in the middle, so as to increase the rigidity of the crankshaft and ensure the running stability of the crankshaft.
The crankshaft middle bearing seat is used as a key part for connecting a moving part and an engine body, under the long-term working of a tunnel engine and a crankshaft, the lubricating performance is reduced and is easy to wear under the influence of vibration impact of the tunnel engine and rotation friction of the crankshaft, the service performance of the tunnel engine is reduced, so that noise and vibration of the tunnel engine are increased, the normal working of the tunnel engine is influenced, the service life of the tunnel engine is reduced, and therefore, the technology for improving the structure of the crankshaft middle bearing seat is urgently needed to perfect the equipment.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems existing in the prior art, the utility model aims to provide the spliced middle bearing seat, so that in the design process of the middle bearing seat of the crankshaft, a plurality of independent round reinforcing ribs can enable the middle bearing seat of the crankshaft with compact structure to maintain good rigidity and strength, and meanwhile, impact stress transmitted by the crankshaft can be absorbed, so that noise and vibration of an engine are effectively reduced, and an oil duct hole lubrication and lubrication hole structure provides good lubrication for the rear end of the crankshaft for the engine, and the service life of the engine is prolonged.
2. Technical proposal
In order to solve the problems, the utility model adopts the following technical scheme.
The utility model provides a middle bearing frame of concatenation formula, includes Qu Zhou hole, crank axle seat hole is located the engine inner chamber to cooperate with the crank axle journal, the outer end in crank axle seat hole is equipped with middle bearing frame lower carriage and middle bearing frame upper carriage respectively, and middle bearing frame lower carriage and middle bearing frame upper carriage threaded connection, a pair of outer disc oil inlet on the outer disc of middle bearing frame lower carriage, and the outer end of middle bearing frame lower carriage is equipped with a pair of whole quick-witted mounting hole, the outer end of middle bearing frame lower carriage and middle bearing frame upper carriage all is equipped with independent circular strengthening rib, the inner wall in crank axle seat hole is equipped with a pair of oil feed groove and axle bush constant head tank respectively, and the oil feed groove is located the downside of axle bush constant head tank, be equipped with axial locating hole behind the installation organism on the outer disc of middle bearing frame lower carriage.
Further, a pair of hollow positioning pins are arranged between the lower seat of the middle bearing seat and the upper seat of the middle bearing seat, and the pair of hollow positioning pins are respectively positioned at the front side and the rear side of the crank seat hole.
Further, the outer ends of the lower seat of the middle bearing seat and the upper seat of the middle bearing seat are respectively provided with a pair of connecting bolt holes, the two pairs of connecting bolt holes are corresponding, a pair of hollow locating pins are respectively embedded between the two pairs of connecting bolt holes, the upper end of the upper seat of the middle bearing seat is a spliced bolt mounting surface, the upper side of the upper seat of the middle bearing seat is provided with a pair of outer hexagon bolts, and the outer hexagon bolts are respectively inserted between the two pairs of connecting bolt holes and are in threaded connection with the hollow locating pins.
Further, the outer end of the upper seat of the middle bearing seat is provided with a pair of weight-reducing notches, and the weight-reducing notches are arranged front and back.
Further, the outer diameter and the inner diameter of the middle bearing seat lower seat and the middle bearing seat upper seat are respectively equal correspondingly.
3. Advantageous effects
Compared with the prior art, the utility model has the following beneficial effects:
(1) In the design process of the crankshaft middle bearing seat, the crankshaft middle bearing seat formed by the middle bearing seat lower seat and the middle bearing seat upper seat which are spliced by threads has compact structure, saves space, reduces interference between the crankshaft middle bearing seat and other components, and can be effectively sleeved with a crankshaft by matching with the crankshaft seat holes, so that the constraint is added to the crankshaft, the rigidity of the crankshaft is improved, the running stability of the crankshaft is ensured, the appearance is designed, the positioning is realized by installing the crankshaft middle bearing seat and the tunnel channel of the cylinder body, and the concentricity of the aperture of the installed crankshaft is ensured.
(2) In the design process of the crankshaft middle bearing seat, the plurality of independent round reinforcing ribs can ensure that the crankshaft middle bearing seat with a compact structure keeps good rigidity and strength, and can also absorb impact stress transmitted by a crankshaft, so that noise and vibration of an engine are effectively reduced, and the lubricating hole structure of the oil passage hole provides good lubrication for the rear end of the crankshaft for the engine, so that the service life of the engine is prolonged.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is an overall exploded view of the present utility model;
fig. 3 is a schematic top view of the whole structure of the present utility model.
The reference numerals in the figures illustrate:
1. qu Zhou holes; 2. a middle bearing seat lower seat; 3. an upper seat of the middle bearing seat; 4. an oil inlet of the outer circular surface; 5. a complete machine mounting hole; 6. a hollow locating pin; 7. an outer hexagonal bolt; 8. independent round reinforcing ribs; 9. an oil supply tank; 10. bearing bush positioning groove; 11. a weight reduction notch; 12. splicing the bolt installation surfaces; 13. a connecting bolt hole; 14. and (5) installing the machine body and then axially positioning the hole.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.
Examples:
referring to fig. 1-3, a spliced middle bearing seat comprises a crank shaft seat hole 1, wherein the crank shaft seat hole 1 is positioned in an inner cavity of an engine and is matched with a crank shaft journal, the outer end of the crank shaft seat hole 1 is respectively provided with a middle bearing seat lower seat 2 and a middle bearing seat upper seat 3, the middle bearing seat lower seat 2 is in threaded connection with the middle bearing seat upper seat 3, a pair of outer circular oil inlets 4 are formed in the outer circular surface of the middle bearing seat lower seat 2, the outer end of the middle bearing seat lower seat 2 is provided with a pair of integral mounting holes 5, the outer ends of the middle bearing seat lower seat 2 and the middle bearing seat upper seat 3 are respectively provided with independent circular reinforcing ribs 8, the inner wall of the crank shaft seat hole 1 is respectively provided with a pair of oil supply grooves 9 and bearing bush positioning grooves 10, the oil supply grooves 9 are positioned on the lower side of the bearing bush positioning grooves 10, and a rear axial positioning hole 14 for mounting a machine body is formed in the outer circular surface of the middle bearing seat lower seat 2.
In the use process, the crankshaft middle bearing seat is formed by the middle bearing seat lower seat 2 and the middle bearing seat upper seat 3 which are spliced by threads in the design process, so that the structure is compact, the space is saved, the interference between the crankshaft middle bearing seat and other components is reduced, meanwhile, the crankshaft seat hole 1 is matched for effectively sleeving a crankshaft, the constraint is added to the crankshaft, the rigidity of the crankshaft is improved, the running stability of the crankshaft is ensured, the appearance is designed, the positioning is realized, the installation positioning is realized with a cylinder body tunnel channel, and the aperture concentricity of the installed crankshaft is ensured;
in addition, in the design process of the crankshaft middle bearing seat, the plurality of independent round reinforcing ribs 8 can enable the crankshaft middle bearing seat with a compact structure to keep good rigidity and strength, meanwhile, impact stress transmitted by a crankshaft can be absorbed, noise and vibration of an engine are effectively reduced, the lubricating hole structure of the oil duct hole provides good lubrication for the rear end of the crankshaft of the engine, crankshaft lubrication during high-speed rotation of the engine is guaranteed, and service life of the engine is prolonged.
Referring to fig. 2, a pair of hollow positioning pins 6 are disposed between the lower seat 2 and the upper seat 3 of the middle bearing seat, and the pair of hollow positioning pins 6 are respectively located on the front and rear sides of the crankshaft seat hole 1.
In the use of the scheme, in the splicing process of the crankshaft middle bearing seat, in order to avoid the phenomenon that the middle bearing seat lower seat 2 and the middle bearing seat upper seat 3 are uneven in offset during butt joint, the middle bearing seat lower seat 2 and the middle bearing seat upper seat 3 can be limited and positioned through a pair of hollow positioning pins 6, the accuracy and the stability of butt joint are ensured, and the splicing effect is enhanced.
Referring to fig. 2, a pair of connecting bolt holes 13 are cut at the outer ends of the lower seat 2 and the upper seat 3 of the middle bearing seat, and the two pairs of connecting bolt holes 13 are corresponding, a pair of hollow positioning pins 6 are respectively embedded between the two pairs of connecting bolt holes 13, the upper end of the upper seat 3 of the middle bearing seat is a splicing bolt mounting surface 12, and a pair of outer hexagon bolts 7 are arranged at the upper side of the upper seat, and the pair of outer hexagon bolts 7 are respectively inserted between the two pairs of connecting bolt holes 13 and are in threaded connection with the hollow positioning pins 6.
In the use of the scheme, the crankshaft middle bearing seat is in the splicing process, so that the middle bearing seat lower seat 2 and the middle bearing seat upper seat 3 are convenient to install in a rapid splicing mode, the middle bearing seat lower seat 2 and the middle bearing seat upper seat 3 are driven to be rapidly spliced together through the threaded connection of the pair of outer hexagonal bolts 7 and the pair of connecting bolt holes 13, and meanwhile, the fastening stability of splicing is guaranteed.
Referring to fig. 1-2, a pair of weight-reducing notches 11 are provided at the outer end of the upper seat 3 of the middle bearing seat, and the pair of weight-reducing notches 11 are provided in front and back.
In the use process, through the arrangement of the pair of weight reduction gaps 11, the material consumption of the crankshaft middle bearing seat can be reduced on the premise of ensuring the rigidity and strength of the crankshaft middle bearing seat, the structure is compact, the space is saved, and the interference between the crankshaft middle bearing seat and other components is reduced.
Referring to fig. 1-3, the outer diameter and the inner diameter of the middle bearing seat lower seat 2 and the middle bearing seat upper seat 3 are respectively equal.
In the use process of the scheme, the outer diameter and the inner diameter of the middle bearing seat lower seat 2 and the outer diameter of the middle bearing seat upper seat 3 are respectively corresponding to each other, so that the concentricity of the crank shaft aperture after installation can be ensured.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a concatenation formula middle bearing frame, includes Qu Zhou hole (1), its characterized in that: qu Zhou hole (1) are located the engine inner chamber to cooperate with the bent axle journal, the outer end in Qu Zhou hole (1) is equipped with middle bearing frame lower seat (2) and middle bearing frame upper seat (3) respectively, and middle bearing frame lower seat (2) and middle bearing frame upper seat (3) threaded connection, a pair of outer disc oil inlet (4) on the outer disc of middle bearing frame lower seat (2), and the outer end of middle bearing frame lower seat (2) is equipped with a pair of whole quick-witted mounting hole (5), the outer end of middle bearing frame lower seat (2) and middle bearing frame upper seat (3) all is equipped with independent circular strengthening rib (8), the inner wall in Qu Zhou hole (1) is equipped with a pair of oil feed groove (9) and axle bush constant head tank (10) respectively, and oil feed groove (9) are located the downside of axle bush constant head tank (10), be equipped with on the outer disc of middle bearing frame lower seat (2) and install behind-body axial positioning hole (14).
2. A spliced mid-bearing housing as claimed in claim 1, wherein: a pair of hollow locating pins (6) are arranged between the middle bearing seat lower seat (2) and the middle bearing seat upper seat (3), and the pair of hollow locating pins (6) are respectively positioned at the front side and the rear side of the crank seat hole (1).
3. A spliced mid-bearing housing as claimed in claim 1, wherein: the outer ends of the middle bearing seat lower seat (2) and the middle bearing seat upper seat (3) are respectively provided with a pair of connecting bolt holes (13), the two pairs of connecting bolt holes (13) are corresponding, a pair of hollow locating pins (6) are respectively embedded between the two pairs of connecting bolt holes (13), the upper end of the middle bearing seat upper seat (3) is provided with a splicing bolt mounting surface (12), the upper side of the middle bearing seat upper seat is provided with a pair of outer hexagon bolts (7), and the pair of outer hexagon bolts (7) are respectively inserted between the two pairs of connecting bolt holes (13) and are in threaded connection with the hollow locating pins (6).
4. A spliced mid-bearing housing as claimed in claim 1, wherein: the outer end of the upper seat (3) of the middle bearing seat is provided with a pair of weight-reducing notches (11), and the weight-reducing notches (11) are arranged front and back.
5. A spliced mid-bearing housing as claimed in claim 1, wherein: the outer diameter and the inner diameter of the middle bearing seat lower seat (2) and the outer diameter of the middle bearing seat upper seat (3) are respectively and correspondingly equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321450292.XU CN220248691U (en) | 2023-06-08 | 2023-06-08 | Spliced middle bearing seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321450292.XU CN220248691U (en) | 2023-06-08 | 2023-06-08 | Spliced middle bearing seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248691U true CN220248691U (en) | 2023-12-26 |
Family
ID=89232186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321450292.XU Active CN220248691U (en) | 2023-06-08 | 2023-06-08 | Spliced middle bearing seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248691U (en) |
-
2023
- 2023-06-08 CN CN202321450292.XU patent/CN220248691U/en active Active
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