Marine diesel engine rack head end aligning device

Abstract

The utility model belongs to the field of marine diesel engine manufacturing, and particularly relates to a marine diesel engine rack head end alignment device. The marine diesel engine rack head end alignment device comprises first round steel and second round steel. The first round steel and the second round steel coincide in axis. The MD type top weight is connected between the first round steel and the second round steel; a flange plate is fixedly connected to the outer end of the first round steel and used for being connected with a rack plate at the head end of a rack through bolts. The outer end of the second round steel is fixedly connected with a square plate used for being welded to a fixing block of a rack. A telescopic control hole is formed in the MD type top weight, the length of the MD type top weight is adjusted through the telescopic control hole, and perpendicularity control over the head end and the bottom of the rack is achieved. The welding-free design is adopted, damage to the rack body is avoided, the assembling efficiency is improved, high universality is achieved, and the diesel engine rack assembly can adapt to diesel engine racks of various cylinder diameters.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of marine diesel engine manufacturing, and particularly relates to a marine diesel engine frame head end adjusting device. BACKGROUND

[0002] The marine diesel engine frame is a fixed support installed on the frame, mainly used for installing the cylinder, and forms a closed crankcase with the frame. The marine diesel engine frame is a support structure, which is located between the cylinder block and the frame in the marine low-speed heavy-duty diesel engine. The main function of the frame is to support the air intake, exhaust, fuel and other accessory systems of the diesel engine, and hang these accessories on the frame beside the diesel engine for easy maintenance and replacement. In addition, the frame also undertakes the important task of forming a closed crankcase with the frame.

[0003] The manufacturing process of the marine low-speed diesel engine frame mainly includes steps of dividing the frame into different modules, cutting and blanking the part plates, and processing and welding. Specifically, the first step of the manufacturing process is to divide the frame into three modules of the frame head section, the frame middle section and the frame tail section, wherein the frame middle section module includes a plurality of frame middle sections with the same structure and size. In the second step, all part plates of the frame sections are cut and blanked according to the design size of the frame, and then the bevel is processed and welded, and finally the plates are classified and stored.

[0004] The existing marine diesel engine frame head end installation needs to weld a pipe shuttle tool to the frame head end and the fixed block, which not only has low efficiency, but also has poor universality, and also damages the marine diesel engine frame and the tool. SUMMARY

[0005] To solve the problems of low efficiency, poor universality, and damage to the marine diesel engine frame and the tool in the prior art, the present application provides a marine diesel engine frame head end adjusting device, which comprises: a first round steel and a second round steel; the axis of the first round steel and the second round steel coincide; an MD type top code is connected between the first round steel and the second round steel; the outer end of the first round steel is fixedly connected with a flange plate for bolt connection with the frame plate of the frame head end; the outer end of the second round steel is fixedly connected with a square plate for welding to the fixed block of the frame; the MD type top code is provided with an extension control hole for adjusting the length of the MD type top code to control the perpendicularity of the end and the bottom of the frame head end; the material of the first round steel and the second round steel is high-strength alloy steel, and the surface is treated with anti-rust; the thickness of the flange plate and the square plate ranges from 10 to 20 mm, and the edge is chamfered; the extension control hole is a long strip-shaped through hole, and the length direction is perpendicular to the axis of the first round steel and the second round steel; the device adjusts the length between the first round steel and the second round steel to realize the compatibility and adaptation of the diesel engine frame head end of different cylinder diameters; the MD type top code is provided with a locking mechanism inside for fixing the adjusted extension state.

[0006] According to the ship diesel engine frame head end adjusting device, the flange plate is provided with at least four symmetrically distributed bolt holes, and the hole diameter of the bolt hole is matched with the frame plate.

[0007] According to the ship diesel engine frame head end adjusting device, the welding surface of the square plate is roughened to enhance the welding strength.

[0008] According to the ship diesel engine frame head end adjusting device, the adjusting accuracy of the telescopic control hole is ±0.5mm.

[0009] According to the ship diesel engine frame head end adjusting device, the first round steel, the second round steel and the flange plate and the square plate are connected by welding or integral forming.

[0010] According to the ship diesel engine frame head end adjusting device, the material of the MD type top code is cast iron, and the surface is coated with wear-resistant coating.

[0011] According to the ship diesel engine frame head end adjusting device, the locking mechanism is a manual knob or a hydraulic locking device.

[0012] According to the ship diesel engine frame head end adjusting device, the device further comprises an auxiliary support rod which is detachably connected to the middle part of the first round steel and the second round steel.

[0013] According to the ship diesel engine frame head end adjusting device, the first round steel and the second round steel are marked with scale lines for indicating the adjustment amount.

[0014] According to the ship diesel engine frame head end adjusting device, the connecting part of the flange plate and the frame plate is provided with a shock absorbing pad.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The present application adopts the combination structure of MD type top code, first round steel, second round steel, flange plate, square plate and telescopic control hole, and the flange plate and the frame plate at the head end of the frame are connected by bolts, and the square plate only needs to be welded to the fixed block, which avoids damage to the frame body.

[0017] 2. The telescopic control hole combined with the scale line makes the adjustment process intuitive and fast, realizes efficient adjustment, and improves the assembly efficiency by more than 40%.

[0018] 3. The present application has high universality by replacing the length of the round steel and adjusting the top code, and can be adapted to diesel engine frames of various cylinder diameters. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 This is a schematic diagram of the bow structure of the marine diesel engine frame of the present invention.

[0020] Fig. 2 This is a schematic diagram of the assembly at the bow of a marine diesel engine frame.

[0021] Fig. 3 This is a schematic diagram of the adjustment of the bow end adjustment device of the marine diesel engine frame according to the present invention.

[0022] In the diagram: 1-MD type top bracket, 2-cleaning section module, 3-flange plate, 4-square plate, 5-telescopic control hole, 6-frame plate, 7-fixing block. Detailed Implementation

[0023] Preferred Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] like Figs. 1-3 The following is an example of a marine diesel engine frame bow-end alignment device: It includes a first round steel bar 11 and a second round steel bar 12; the axes of the first round steel bar 11 and the second round steel bar 12 coincide; an MD-type top bracket 1 is connected between the first round steel bar 11 and the second round steel bar 12; a flange plate 3 is fixedly connected to the outer end of the first round steel bar 11 for bolt connection to the frame plate 6 at the bow end of the frame; a square plate 4 is fixedly connected to the outer end of the second round steel bar 12 for welding to the fixing block 7 of the frame; the MD-type top bracket 1 is provided with a telescopic control hole 5, through which the length of the MD-type top bracket 1 is adjusted to achieve the bow-end alignment of the engine frame. Verticality control at the ends and bottom; the first round steel 11 and the second round steel 12 are made of high-strength alloy steel with rust-proof surface treatment; the thickness of the flange plate 3 and the square plate 4 ranges from 10-20mm, and the edges are chamfered; the telescopic control hole 5 is an elongated through hole, the length direction of which is perpendicular to the axis of the first round steel 11 and the second round steel 12; the device achieves compatibility with the front end of the diesel engine frame with different cylinder diameters by adjusting the length between the first round steel 11 and the second round steel 12; the MD type top code 1 is equipped with a locking mechanism inside to fix the telescopic state after adjustment.

[0026] The flange plate 3 has four symmetrically distributed bolt holes, the diameter of which matches that of the frame plate 6.

[0027] The welding surface of the square plate 4 is roughened to enhance the welding strength. The adjustment accuracy of the telescopic control hole 5 is ±0.5 mm. The first round steel 11, the second round steel 12 and the flange plate 3 and the square plate 4 are connected by welding or one-piece forming. The material of the MD type top code 1 is cast iron, and the surface is coated with a wear-resistant coating. The locking mechanism is a manual knob or a hydraulic locking device. The device also includes an auxiliary support rod which is detachably connected to the middle part of the first round steel 11 and the second round steel 12. The surface of the first round steel 11 and the second round steel 12 is marked with a scale line for indicating the adjustment amount. The connecting part of the flange plate 3 and the rack plate 6 is provided with a shock absorbing gasket.

[0028] The present application relates to a kind of marine diesel engine rack first end adjusting device, for quickly, accurately adjust the verticality of rack first end and bottom, avoid the damage of traditional welding mode to rack and tool.

[0029] As Fig. 1 As shown in the figure, the adjusting device mainly consists of the following components: MD type top code 1: as the core adjusting component, it is provided with telescopic control hole 5 inside, the telescopic amount of MD type top code 1 is controlled by the tightness of bolt in telescopic control hole 5, so as to adjust the position of rack first end. MD type top code 1 adopts cast iron material, and the surface is coated with wear-resistant coating to prolong service life.

[0030] The first round steel 11 and the second round steel 12 are respectively arranged on the two sides of MD type top code 1, and the material is high-strength alloy steel, and the surface is rust-proof treated. The outer end of the first round steel 11 is welded with the flange plate 3, and the outer end of the second round steel 12 is welded with the square plate 4. The length of the first round steel 11 and the second round steel 12 can be adjusted according to the cylinder diameter of rack, and the surface is marked with scale line to assist the length adjustment of adjusting device.

[0031] The flange plate 3 and the rack plate 6 of rack first end are connected by bolt, and the bolt holes are symmetrically distributed, the hole diameter is matched with the flange of rack plate 6, to ensure the stable connection.

[0032] The square plate 4 is welded to fixed block 7, and the welding surface is sandblasted to enhance the adhesion.

[0033] As Fig. 2 As shown in the figure: installation and adjustment steps:

[0034] 1. pre-installation: align the flange plate 3 with the flange plate 6 of rack first end, and fix it with high-strength bolt; the square plate 4 is welded to the fixed block 7, and the welding slag is cleaned after welding is completed.

[0035] 2. adjust the verticality: loosen the fastening bolt of telescopic control hole 5, and adjust the position of rack first end by the telescopic of MD type top code 1. Observe the scale line or use the level to measure, until the verticality of rack first end and bottom reaches the requirement: accuracy ±0.5 mm.

[0036] 3 Locking device: after adjustment, tighten the locking mechanism of MD type top code 1, ensure that the device remains stable in the vibration environment.

[0037] To adapt to different models of diesel engines, the first round steel 11 and the second round steel 12 are designed to be replaceable, and the length range covers 500-1200mm. The auxiliary support rod can be installed in the long-span working condition to further improve the stability.

[0038] Taking the existing marine diesel engine as an example, the first end flange aperture of the frame is Φ20mm, and the fixed block spacing is 800mm. The corresponding length of the round steel 2 is selected, and after installation, the verticality calibration is completed within 10 minutes through the telescopic control hole 5, and the precision reaches 0.3mm, which is much higher than the traditional process of ±1mm.

[0039] In summary, the present application solves the problems of low efficiency and large damage in the prior art through modular design and precise adjustment mechanism, and has significant practical value. The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A marine diesel engine bedframe fore-end alignment device, characterized by, The utility model relates to a diesel engine frame first end compatible device, including: First round steel (11), second round steel (12);First round steel (11) and second round steel (12) axis coincide;MD type top code (1) is connected between first round steel (11), second round steel (12);The outer end of first round steel (11) is fixedly connected with flange plate (3), is used to be connected with the rack plate (6) of frame first end through bolt connection;The outer end of second round steel (12) is fixedly connected with square plate (4), is used for welding to the fixed block (7) of frame;MD type top code (1) is equipped with telescopic control hole (5) on, and the length of MD type top code (1) is adjusted through telescopic control hole (5), and the perpendicularity control of frame first end end and bottom is realized;The material of first round steel (11), second round steel (12) is high-strength alloy steel, and the surface is rustproof treated;The thickness range of flange plate (3) and square plate (4) is 10-20mm, and the edge is equipped with chamfer;Telescopic control hole (5) is long strip-shaped through -hole, and the length direction is perpendicular to the axis of first round steel (11) and second round steel (12);The device is through the length between first round steel (11) and second round steel (12) adjustment and realizes the compatible adaptation diesel engine frame first end of different cylinder diameter;MD type top code (1) is equipped with locking mechanism inside, for fixed the telescopic state of adjusted.

2. A marine diesel engine bedframe fore-end alignment device according to claim 1, characterised in that, At least four symmetrical bolt holes are arranged on the flange plate (3), and the hole diameter of the bolt hole is matched with the rack plate (6).

3. A marine diesel engine bedframe fore-end alignment device according to claim 2, characterised in that, The welding surface of the square plate (4) is roughened to enhance the welding strength.

4. A marine diesel engine bedframe fore-end alignment device according to claim 3, characterised in that, The adjustment accuracy of the telescopic control hole (5) is ±0.5mm.

5. Marine diesel engine bedframe fore-end alignment device according to claim 1 or 4, characterized in that The first round steel (11), the second round steel (12), the flange plate (3) and the square plate (4) are connected by welding or integral molding.

6. A marine diesel engine bedframe fore-end alignment device according to claim 5, characterised in that, The material of the MD type top code (1) is cast iron, and the surface is coated with a wear-resistant coating.

7. A marine diesel engine bedframe fore-end alignment device according to claim 6, characterised in that, The locking mechanism is a manual knob or a hydraulic locking device.

8. A marine diesel engine bedframe fore-end alignment device according to claim 7, characterised in that, The device further includes an auxiliary support rod, which is detachably connected to the middle part of the first round steel (11) and the second round steel (12).

9. A marine diesel engine bedframe fore-end alignment device according to claim 8, characterised in that, The first round steel (11) and the second round steel (12) are marked with scale lines on the surface to indicate the adjustment amount.

10. A marine diesel engine bedframe fore-end alignment device according to claim 9, characterised in that, A shock-absorbing gasket is arranged at the connection between the flange plate (3) and the rack plate (6).

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