Roller bracket for cleaning marine low-speed engine cylinder sleeve

Abstract

A roller bracket for cleaning a cylinder sleeve of a marine low-speed diesel engine comprises two drum-shaped supporting rollers, a support, a rolling shaft, a gasket and a reinforcing structure. The outer circumferential face of the supporting roller is designed to be in a drum shape, stepped holes are formed in the supporting roller and used for installing the rolling bearings, the supporting roller is installed on the support in a bilateral symmetry mode through the rolling bearings, and the support is composed of a bottom plate and two pairs of bearing seats welded to the bottom plate in a front-back symmetry mode. A boss is arranged at one end of the rolling shaft, and a groove with the width of 1.5 mm is formed in the other end of the rolling shaft and used for installing the elastic check ring, so that positioning and loosening prevention of the rolling shaft are achieved. The roller bracket is reasonable in design, stable in structure, high in adaptability and capable of effectively improving the cleaning efficiency and effect of the marine low-speed diesel engine cylinder sleeve.

Description

Technical Field

[0001] The invention belongs to the technical field of marine low-speed diesel engines, in particular to a roller bracket used for cleaning a cylinder liner of a marine low-speed diesel engine. Technical Background

[0002] The cylinder liner of a marine low-speed diesel engine is a core component inside the engine. Its quality and cleanliness directly affect the overall performance and operating efficiency of the diesel engine. After the cylinder liner is manufactured, a special anti-rust and anti-corrosion oil seal will be applied on the surface to ensure that it is not corroded by the external environment during transportation to the workshop.

[0003] Before installing the cylinder liner, the oil seal coating on its surface must be completely removed, because the residual oil seal will not only interfere with the precise fit between the cylinder liner and other key components, affecting the integrity of the sealing system, but may also be introduced as a source of impurities, causing pollution to the internal environment of the diesel engine. However, in actual operation, due to its large size and weight, it is not convenient for on-site operators to remove the oil seal, which will increase the workload of operators and reduce work efficiency. It may also damage the surface of the cylinder liner due to improper operation, increasing additional repair costs.

[0004] Therefore, the technical innovation in the removal of the cylinder liner oil seal of a marine low-speed diesel engine needs to ensure that the oil seal is removed thoroughly and safely, while greatly reducing the labor intensity of operators and improving work efficiency. At the same time, it ensures that the cylinder liner surface is intact, laying a solid foundation for the long-term stable operation of the diesel engine. Summary of the invention

[0005] The purpose of the present invention is to provide a special roller bracket that combines simplicity, efficiency and safety on the basis of ensuring that the cylinder liner is intact. The tooling is specially designed for the cleaning process of the cylinder liner. The cylinder liner can lie firmly on it, so that the operator can easily perform the cleaning task, effectively reduce the workload, and at the same time achieve better cleaning effects and improve work efficiency.

[0006] To achieve the above purpose, the device of the present invention adopts the following technical solutions:

[0007] A roller bracket for cleaning the cylinder liner of a low-speed marine diesel engine is characterized in that it includes:

[0008] Two supporting rollers, each of which has a drum-shaped outer circumference and a stepped hole for mounting a rolling bearing, and the supporting rollers are symmetrically mounted on the bracket via the rolling bearings;

[0009] The bracket comprises a bottom plate and two pairs of bearing seats welded to the bottom plate symmetrically in front and back directions, each pair of bearing seats is provided with a through hole for inserting the rolling shaft, and the coaxiality tolerance of the through holes of each pair of bearing seats is controlled within 0.1 mm;

[0010] The rolling shaft is horizontally inserted into the through hole of the bearing seat, one end of the rolling shaft is provided with a boss, and the other end is provided with a groove for installing an elastic retaining ring, and the elastic retaining ring is used to position the rolling shaft to prevent it from loosening outward;

[0011] The washer is clamped on the rolling shaft between the bearing seat on the bracket and the rolling bearing.

[0012] Furthermore, the material of the supporting roller is H62 brass, the material of the bearing seat, the base plate and the gasket is Q235A, the material of the rolling shaft is 45 steel, and the material of the elastic retaining ring is 65Mn.

[0013] Furthermore, it also includes reinforcing ribs and H-shaped steel, and the materials of the reinforcing ribs and H-shaped steel are both Q235A, which are used to further enhance the structural stability of the bracket.

[0014] Furthermore, the width of the fillet weld between the bearing seat and the base plate is 5 mm to ensure the structural strength of the bracket.

[0015] Furthermore, the rolling shaft is provided with a groove at one end, and the groove width is 1.5 mm, which is used to install an elastic retaining ring, and the positioning of the rolling shaft is achieved through the elastic locking effect of the elastic retaining ring.

[0016] Furthermore, the support roller is mounted on the rolling shaft via a rolling bearing and can rotate smoothly to adapt to the outer contour of the cylinder liner, thereby facilitating the cleaning operation of the cylinder liner.

[0017] The use process of the present invention is as follows:

[0018] Place two sets of roller brackets on the same straight line, and adjust the spacing to be slightly smaller than the length of the cylinder liner to ensure stable support. Then, use a special lifting device to lift the cylinder liner to the top of the roller bracket, and lay it flat and steadily between the two sets of tooling to start the cylinder liner cleaning operation.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The drum-shaped support roller can better adapt to the outer contour of the cylinder liner, especially when the cylinder liner may be slightly deformed or worn. The drum design not only increases the contact area between the roller and the cylinder liner, but also improves the rolling stability, thereby reducing the friction resistance and wear during the cleaning process, and improving the cleaning efficiency and effect.

[0021] 2. A boss is provided at one end of the rolling shaft, and a groove for installing a circlip is provided at the other end. The elastic locking effect of the circlip is used to achieve positioning to prevent the rolling shaft from loosening. This simplifies the installation and positioning process of the rolling shaft and improves assembly efficiency and reliability. At the same time, the groove width is 1.5mm, which not only ensures the firm installation of the circlip, but also avoids excessive installation difficulty and cost.

[0022] 3. The present invention facilitates cleaning by on-site personnel without damaging the cylinder sleeve, effectively reduces their workload, and achieves better cleaning effect. It has a simple structure, is easy to operate, and is suitable for a variety of machine models. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic structural diagram of a roller bracket for cleaning a cylinder liner of a marine low-speed diesel engine.

[0024] Figure 2 It is a schematic structural diagram of the supporting roller in the present invention.

[0025] Figure 3 Schematic diagram of the support in the present invention.

[0026] Figure 4 Schematic diagram of the gasket.

[0027] Figure 5 A schematic diagram of the scroll axis.

[0028] In the figure: supporting roller-1, bearing seat-2, nut-3, bracket-4, H-shaped steel 5, reinforcing rib 6, rolling shaft-7, washer-8, elastic retaining ring-9, rolling shaft-10. DETAILED DESCRIPTION

[0029] In order to clearly illustrate the purpose, technical solution and advantages of the device, the present invention is further described in detail with reference to the accompanying drawings. It should be understood that the specific implementation examples described herein are only used to explain the present invention and are not used to limit the present invention. The protection scope of the present invention shall be based on the protection scope of the claims.

[0030] See also Figure 1 , Figure 1 The structure diagram of the roller bracket for cleaning the cylinder liner of a low-speed marine diesel engine of the present invention is shown in the figure. As shown in the figure, a roller bracket for cleaning the cylinder liner of a low-speed marine diesel engine comprises two supporting rollers 1, each supporting roller 1 has a drum-shaped outer circumference and a stepped hole for mounting a rolling bearing 7 inside, and the supporting rollers 1 are symmetrically mounted on a bracket 4 through the rolling bearing 7;

[0031] The bracket 4 includes a base plate 1 and two pairs of bearing seats 2 symmetrically welded to the base plate 1. Each pair of bearing seats 2 is provided with a through hole for inserting the rolling shaft 10, and the coaxiality tolerance of the through holes of each pair of bearing seats 2 is controlled within 0.1 mm.

[0032] The rolling shaft 10 is horizontally inserted into the through hole of the bearing seat 2. A boss is provided at one end of the rolling shaft 10, and a groove for installing an elastic retaining ring 9 is provided at the other end. The elastic retaining ring 9 is used to position the rolling shaft 10 to prevent it from loosening outward.

[0033] The washer 8 is clamped on the rolling shaft 10 between the bearing seat 2 and the rolling bearing 7 on the bracket 4.

[0034] See also Figure 2 The two support rollers 1 are symmetrically arranged on the rolling shafts 10 on the two pairs of bearing seats 2 on the bracket 4 through the rolling bearings 7. The outer circumferential surface of the support roller 1 in contact with the cylinder sleeve is drum-shaped, and there is no step hole inside for mounting the rolling bearings 7.

[0035] See also Figure 3 The bracket 4 includes a base plate 1 and two pairs of bearing seats 2, each pair of which is two bearing seats 2, which are welded to the base plate 1 symmetrically in front and back. The fillet weld between the bearing seats 2 and the base plate 1 is 5 mm. The bearing seats 2 are provided with through holes for inserting the rolling shaft 10, and the coaxiality tolerance of the through holes of each pair of bearing seats 2 is 0.1 mm.

[0036] See also Figure 4 The washer 8 is a flat washer, which is clamped on the rolling shaft 10 between the bearing seat on the bracket 4 and the rolling bearing 7.

[0037] See also Figure 5 The rolling shaft 10 is horizontally inserted into the through hole of the bearing seat of the bracket 4. One end of the rolling shaft 10 is a boss, and the other end is provided with a 1.5 mm wide groove for installing the circlip 9 and positioning through the circlip 9 to prevent the rolling shaft 10 from loosening outward.

[0038] The support roller 1 is made of H62 brass, the bearing seat, base plate and washer 8 are made of Q235A, the rolling shaft 10 is made of 45 steel, the elastic washer 9 is made of 65Mn, and the reinforcing rib 6 and H-shaped steel 5 are made of Q235A.

[0039] The present invention is suitable for cleaning the cylinder liner of a marine diesel engine. The design of this tooling fully considers the actual needs of on-site operators. When cleaning the cylinder liner, the operator only needs to place the cylinder liner on the support roller to start the cleaning operation without complicated adjustment or preparation steps, thereby improving production efficiency. At the same time, the safety and reliability of the operation are also fully guaranteed, effectively avoiding unexpected situations that may occur during the cleaning process. In addition, since its main components are all detachable, when maintenance or replacement of components is required, the operator can quickly complete the relevant work without spending too much time and energy.

Claims

1. A roller bracket for cleaning the cylinder liner of a low-speed marine diesel engine, characterized in that: include: Two supporting rollers (1), each supporting roller (1) having an outer circumferential surface in a drum shape and an inner stepped hole for mounting a rolling bearing (7), wherein the supporting rollers (1) are mounted on the bracket (4) in a bilaterally symmetrical manner via the rolling bearings (7); The bracket (4) comprises a base plate (1) and two pairs of bearing seats (2) symmetrically welded to the base plate (1) in a front-to-back manner, each pair of bearing seats (2) being provided with a through hole for inserting the rolling shaft (10), and the coaxiality tolerance of the through holes of each pair of bearing seats (2) being controlled within 0.1 mm; The rolling shaft (10) is horizontally inserted into the through hole of the bearing seat (2), one end of the rolling shaft (10) is provided with a boss, and the other end is provided with a groove for installing an elastic retaining ring (9), and the rolling shaft (10) is positioned by the elastic retaining ring (9) to prevent it from loosening outward; The washer (8) is clamped on the rolling shaft (10) between the bearing seat (2) and the rolling bearing (7) on the bracket (4).

2. The roller bracket for cleaning the cylinder liner of a low-speed marine diesel engine according to claim 1, characterized in that: The material of the supporting roller (1) is H62 brass, the material of the bearing seat (2), the bottom plate (1) and the washer (8) is Q235A, the material of the rolling shaft (10) is 45 steel, and the material of the elastic retaining ring (9) is 65Mn.

3. The roller bracket according to claim 1, characterized in that: It also includes reinforcing ribs (6) and H-shaped steel (5), both of which are made of Q235A and are used to further enhance the structural stability of the bracket (4).

4. The roller bracket according to claim 1, characterized in that: The width of the fillet weld between the bearing seat (2) and the bottom plate (1) is 5 mm, so as to ensure the structural strength of the bracket (4).

5. The roller bracket according to claim 1, characterized in that: The rolling shaft (10) is provided with one end of a groove, the groove width of which is 1.5 mm, for mounting an elastic retaining ring (9), and the positioning of the rolling shaft (10) is achieved through the elastic locking effect of the elastic retaining ring (9).

6. The roller bracket according to claim 1, characterized in that: The support roller (1) is mounted on the rolling shaft (10) via a rolling bearing (7) and can rotate smoothly to adapt to the outer contour of the cylinder liner, thereby facilitating the cleaning operation of the cylinder liner.

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