Flywheel reaming structure of large marine diesel engine
By designing a portable reamer and adjustment structure, the problem of low efficiency and poor economical matching between the flywheel and the crankshaft on-site reaming is solved, and efficient and economical are achieved during flywheel installation.
Patent Information
- Application Number
- CN202421375427.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-14
AI Technical Summary
In the prior art, the on-site reaming of flywheels and crankshafts have low efficiency and poor economicality, requiring large horizontal boring machines and large-area processing sites, and complex lifting and fixing processes.
A large marine diesel engine flywheel reaming structure is designed, including a longitudinally arranged mounting plate, bracket and portable reamer. Through the horizontal adjustment structure and the longitudinal adjustment structure, the reamer axis is ensured on the same axis as the flywheel hole and the crankshaft hole.
It improves boring efficiency and economy during flywheel installation, reduces dependence on large-scale processing equipment and sites, and simplifies the installation process.
Smart Images
Figure CN222873479U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent relates to the technical field of large-scale marine diesel engine flywheel installation, and specifically, to a large-scale marine diesel engine flywheel reaming structure. Background Art
[0002] During the manufacturing process of large marine diesel engines, the flywheel needs to be reamed on site to match it with the crankshaft when installing it to ensure that the flywheel mounting hole and the crankshaft mounting hole are on the same axis and have the same hole diameter.
[0003] In the prior art, the crankshaft and the flywheel are fixed on a large horizontal boring machine for paired processing, which not only requires a large horizontal boring machine and a large processing site, but also requires complex hoisting and fixing processes, resulting in low efficiency and poor economic performance. Utility Model Content
[0004] The utility model aims to provide a flywheel reaming structure for a large marine diesel engine, aiming to solve the problems of low efficiency and poor economy in on-site reaming of a flywheel and a crankshaft in the prior art.
[0005] The utility model is implemented as follows: a flywheel reaming structure for a large marine diesel engine comprises a longitudinally arranged mounting plate, the front side of the mounting plate is fixedly attached to the flywheel, the rear side of the mounting plate is formed with a mounting surface, a bracket is fixedly mounted on the mounting surface; the front end of the bracket is fixedly mounted on the mounting surface, the top of the bracket is formed with a placement surface, a movable seat is provided on the placement surface, the movable seat moves laterally on the placement surface through a horizontal adjustment structure, and the movable seat moves longitudinally on the placement surface through a longitudinal adjustment structure; a portable reaming machine is provided on the movable seat.
[0006] Optionally, both sides of the placement surface are provided with limit strips protruding upwards, the limit strips are extended along the length direction of the placement surface, a placement area is formed between two limit strips, and the movable seat is provided on the placement area.
[0007] Optionally, the horizontal adjustment structure includes a plurality of transverse bolts, the limit bar is provided with a plurality of transverse holes that transversely penetrate the limit bar, the plurality of transverse bolts are respectively inserted into the transverse screw holes, the transverse bolts have a penetration section that penetrates into the placement area, and the outer ends of the plurality of penetration sections abut against the outer periphery of the movable seat.
[0008] Optionally, the longitudinal adjustment structure includes a longitudinal bolt, and a plurality of longitudinal holes penetrating upward and downward are formed on the movable seat, and the plurality of longitudinal bolts are respectively inserted into the longitudinal screw holes.
[0009] Optionally, a rotating cylinder is sleeved on the outer periphery of the longitudinal bolt, and the bottom of the rotating cylinder abuts against the placement surface.
[0010] Optionally, an inwardly recessed mounting groove is formed on the mounting surface, and the front end of the bracket is positioned and installed in the mounting groove.
[0011] Optionally, a plurality of mounting holes for fixing with flywheel bolts are formed on the mounting surface.
[0012] Optionally, the mounting surface is provided with a plurality of matching holes, and the bracket is formed with a plurality of through screw holes that penetrate the bracket transversely, and the through screw holes are aligned with the matching holes to form fixing holes; fixing bolts are passed through the fixing holes to fix the bracket and the mounting plate to each other.
[0013] Optionally, a plurality of lifting ring holes are formed on both sides of the bracket to facilitate lifting the bracket.
[0014] Optionally, the bracket is triangular in shape.
[0015] Compared with the prior art, the large-scale marine diesel engine flywheel reaming structure provided by the utility model realizes the arrangement of a portable reaming machine through the design of the mounting plate and the bracket, and then ensures that the reamer axis is on the same axis as the flywheel hole and the crankshaft hole through the horizontal adjustment structure and the longitudinal adjustment structure. In this way, the boring efficiency and economy during flywheel installation are improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of a flywheel reaming structure for a large marine diesel engine provided by the utility model;
[0017] Figure 2 It is a front view schematic diagram of a flywheel reaming structure for a large marine diesel engine provided by the utility model;
[0018] Figure 3 The utility model provides Figure 2 The enlarged schematic diagram of point A in the middle;
[0019] Figure 4 It is a front view schematic diagram of the mounting plate provided by the utility model;
[0020] Figure 5 It is a side view schematic diagram of the mounting plate provided by the utility model;
[0021] Figure 6 It is a front view schematic diagram of the bracket provided by the utility model;
[0022] Figure 7 It is a side view schematic diagram of the bracket provided by the utility model. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0024] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0025] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0026] Reference Figure 1-7 As shown, it is a preferred embodiment provided by the utility model.
[0027] The utility model provides a flywheel reaming structure for a large marine diesel engine, comprising a longitudinally arranged mounting plate 100, wherein the front side of the mounting plate 100 is fixedly attached to the flywheel, and the rear side of the mounting plate 100 is formed with a mounting surface, on which a bracket 200 is fixedly mounted; the front end of the bracket 200 is fixedly mounted on the mounting surface, and the top of the bracket 200 is formed with a placement surface, on which a movable seat is provided, and the movable seat moves laterally on the placement surface through a horizontal adjustment structure, and moves longitudinally on the placement surface through a longitudinal adjustment structure; a portable reamer 300 is provided on the movable seat.
[0028] The above-mentioned large-scale marine diesel engine flywheel reaming structure realizes the arrangement of the portable reamer 300 through the design of the mounting plate 100 and the bracket 200, and then ensures that the reamer axis is on the same axis as the flywheel hole and the crankshaft hole through the horizontal adjustment structure and the longitudinal adjustment structure. In this way, the boring efficiency and economy during the installation of the flywheel are improved.
[0029] By rotating the flywheel reaming tool assembly angle in the same way, all holes on the flywheel can be reamed in pairs.
[0030] The two sides of the placement surface are provided with limit bars 210 protruding upwards, and the limit bars 210 are arranged along the length direction of the placement surface, and a placement area is formed between the two limit bars, and a movable seat is arranged on the placement area. In this way, the limit bars 210 prevent the movable seat and the portable reamer 300 from leaving the placement surface.
[0031] The horizontal adjustment structure includes a plurality of transverse bolts 220. The limit bar 210 is provided with a plurality of transverse holes 211 that transversely penetrate the limit bar 210. The plurality of transverse bolts 220 are respectively inserted into the transverse screw holes. The transverse bolts 220 have a penetration section that penetrates into the placement area. The outer ends of the plurality of penetration sections abut against the outer periphery of the moving seat. In this way, the length of the penetration section is adjusted by adjusting the transverse bolts 220 to push the moving seat to move transversely, thereby changing the position of the reamer.
[0032] The longitudinal adjustment structure includes a longitudinal bolt 230. The movable seat is formed with a plurality of longitudinal holes extending vertically, and the plurality of longitudinal bolts 230 are respectively inserted into the longitudinal screw holes. In this way, the movable seat can be moved up and down by adjusting the longitudinal bolts 230.
[0033] Specifically, a rotating cylinder 240 is sleeved on the outer periphery of the longitudinal bolt 230, and the bottom of the rotating cylinder 240 abuts against the placement surface. In this way, as the longitudinal bolt 230 rotates, the rotating cylinder 240 rotates accordingly, the rotating cylinder 240 is threadedly connected with the longitudinal hole, and the middle part of the rotating cylinder 240 is provided with a middle hole for the longitudinal bolt 230 to pass through and they are fixed to each other. The design of the rotating cylinder 240 improves the stability of the moving seat and increases the contact area.
[0034] Specifically, two strip-shaped grooves are provided on the placement surface, the lower portion of the longitudinal bolt 230 is embedded in the strip-shaped groove, and the bottom of the rotating cylinder 240 abuts against the placement surface outside the strip-shaped groove.
[0035] An inwardly recessed mounting groove 101 is formed on the mounting surface, and the front end of the bracket 200 is positioned and installed in the mounting groove 101. In this way, the positioning and installation of the bracket 200 is facilitated.
[0036] The mounting surface is formed with a plurality of mounting holes 102 for fixing with flywheel bolts. Like this, the design of mounting plate 100 is designed according to flywheel, and through the design of mounting holes 102, mounting plate 100 can be quickly installed on flywheel.
[0037] The mounting surface is provided with a plurality of matching holes 103, and the bracket 200 is provided with a plurality of through screw holes 201 that penetrate the bracket 200 transversely. The through screw holes 201 are aligned with the matching holes 103 to form fixing holes; fixing bolts are passed through the fixing holes to fix the bracket 200 and the mounting plate 100 to each other. In this way, after the front end of the bracket 200 is pressed against the mounting surface, the bracket 200 can be quickly installed by passing the long fixing bolts through the fixing holes.
[0038] A plurality of lifting eye holes 202 are formed on both sides of the bracket 200 for suspending the bracket 200. In this way, the bracket 200 can be easily installed.
[0039] As a preferred embodiment, the bracket 200 is in a triangular shape.
[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A large marine diesel engine flywheel reaming structure, characterized in that: It comprises a longitudinally arranged mounting plate, the front side of the mounting plate is fixedly attached to the flywheel, the rear side of the mounting plate is formed with a mounting surface, a bracket is fixedly mounted on the mounting surface; the front end of the bracket is fixedly mounted on the mounting surface, the top of the bracket is formed with a placement surface, a movable seat is arranged on the placement surface, the movable seat moves laterally on the placement surface through a horizontal adjustment structure, and the movable seat moves longitudinally on the placement surface through a longitudinal adjustment structure; a portable reamer is arranged on the movable seat; The longitudinal adjustment structure includes a longitudinal bolt, and the movable seat is formed with a plurality of longitudinal holes extending vertically and horizontally, and the plurality of longitudinal bolts are respectively inserted into the longitudinal holes; a rotating cylinder is sleeved on the outer periphery of the longitudinal bolt, and the bottom of the rotating cylinder abuts against the placement surface; The rotating cylinder is threadedly connected to the longitudinal hole, and a middle hole is provided in the middle of the rotating cylinder for the longitudinal bolt to pass through and they are fixed to each other; two strip grooves are provided on the placement surface, the lower part of the longitudinal bolt is embedded in the strip groove, and the bottom of the rotating cylinder abuts against the placement surface outside the strip groove.
2. The large-scale marine diesel engine flywheel reaming structure according to claim 1, characterized in that: Limiting strips are protruded upwards on both sides of the placement surface. The limiting strips are extended along the length direction of the placement surface. A placement area is formed between two limiting strips. The movable seat is arranged on the placement area.
3. The large-scale marine diesel engine flywheel reaming structure as claimed in claim 2, characterized in that: The horizontal adjustment structure includes a plurality of transverse bolts, and the limit bar is provided with a plurality of transverse holes that transversely penetrate the limit bar. The plurality of transverse bolts are respectively inserted into the transverse screw holes, and the transverse bolts have a penetration section that penetrates into the placement area, and the outer ends of the plurality of penetration sections abut against the outer periphery of the movable seat.
4. The large-scale marine diesel engine flywheel reaming structure as claimed in claim 1, characterized in that: An inwardly recessed mounting groove is formed on the mounting surface, and the front end of the bracket is positioned and mounted in the mounting groove.
5. The large-scale marine diesel engine flywheel reaming structure as claimed in claim 1, characterized in that: The mounting surface is formed with a plurality of mounting holes for fixing with flywheel bolts.
6. The large-scale marine diesel engine flywheel reaming structure as claimed in claim 1, characterized in that: The mounting surface is provided with a plurality of matching holes, the bracket is formed with a plurality of through screw holes that penetrate the bracket transversely, the through screw holes are aligned with the matching holes to form fixing holes; the fixing holes are penetrated by fixing bolts that fix the bracket and the mounting plate to each other.
7. The flywheel reaming structure for a large marine diesel engine according to any one of claims 1 to 6, characterized in that: A plurality of lifting ring holes for facilitating lifting of the bracket are formed on both sides of the bracket.
8. The flywheel reaming structure for a large marine diesel engine according to any one of claims 1 to 6, characterized in that: The support is in a triangular shape.