A special dismounting tool and method for repairing a high-power diesel engine supercharger

Abstract

The application provides a special dismounting tool and method for repairing a high-power diesel engine supercharger, which comprises a dismounting frame and a sleeve; a vertical core shaft is fixed on the base of the dismounting frame; the gap and height of the upper plate relative to the base are adjustable; a central hole capable of penetrating the turbine is formed in the center of the upper plate; two positioning holes for fixing and positioning the flange plate of the bearing body are symmetrically formed on the plate bodies on both sides of the central hole; a square hole for matching and sleeving the core shaft is formed at the bottom of the cylinder hole of the sleeve; and a spline hole for matching and sleeving the spline end of the turbine shaft of the supercharger is formed at the top of the cylinder hole. The application is reliable in positioning, simple in operation, high in assembly precision, capable of repairing superchargers of the same series and different sizes, and high in utilization rate of the dismounting tool and production efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of high-power diesel engine turbocharger repair equipment, and in particular relates to a special disassembly and assembly tooling and method for high-power diesel engine turbocharger repair. Background Technology

[0002] The turbocharger is a crucial component of high-power diesel engines. The most important method for increasing the power output per cylinder volume in a diesel engine is turbocharging. Turbocharged diesel engines are now widely used in ship propulsion systems. Exhaust gas turbocharging utilizes the exhaust gas to drive the turbocharger's turbine-impeller shaft, which in turn drives the compressor. This compresses the air, increasing its density and thus the amount of air filling the cylinder. This, in turn, increases the fuel injection volume during the working cycle, thereby boosting the engine's power. Because turbochargers have a limited lifespan, they must be inspected and repaired during diesel engine maintenance. Existing tools for repairing turbochargers consist only of simple circular sleeves, lacking a fixed mounting point and unable to be securely installed on a workbench, resulting in unstable turbocharger positioning. Repair work requires at least two people simultaneously, and poor coordination can easily lead to the turbocharger falling, causing personal injury and damage to turbocharger components. Furthermore, the lack of installation precision during repair, particularly the inability to guarantee turbine axial positioning, affects assembly accuracy and reduces production efficiency. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention provides the following technical solution:

[0004] A special disassembly and assembly tool for repairing high-power diesel engine turbochargers, comprising a disassembly and assembly frame and a sleeve;

[0005] The assembly / disassembly frame includes:

[0006] The base has a vertically protruding mandrel fixed at the center of its upper surface, and the mandrel is a square tenon.

[0007] The upper plate is supported and fixed to the base by the surrounding support columns, and the gap and height of the upper plate relative to the base can be adjusted; a central hole for the turbine to pass through is opened in the center of the upper plate, and two positioning holes are symmetrically opened on the plate on both sides of the central hole for fixing and positioning with the flange of the bearing body.

[0008] The bottom of the sleeve has a square hole for fitting with the mandrel, and the top of the sleeve has a spline hole for fitting with the spline end of the turbocharger's turbine shaft.

[0009] Furthermore, the spindle and the base are detachably connected.

[0010] Furthermore, the mandrel is welded and fixed to the upper surface of the mandrel disk, and a mandrel disk mounting hole is opened in the center of the base. The mandrel disk can be inserted into the mandrel disk mounting hole and the mandrel disk is screwed and fixed to the base by bolts.

[0011] Furthermore, the base is fixed to the workbench via bolts through the mounting holes at the four corners.

[0012] Furthermore, several weight-reducing holes are also provided on the base.

[0013] Furthermore, the height of the upper plate is adjusted or locked by a structure in which the middle part of each support column passes through the upper plate and is connected to the upper and lower locking nuts by external threads.

[0014] Furthermore, the bottom of the support column is fixed by being screwed to the base and locked with a locking nut.

[0015] The present invention also provides a method for disassembling and assembling a high-power diesel engine turbocharger, including a special disassembly and assembly tool for high-power diesel engine turbocharger maintenance as described above.

[0016] First, remove the turbocharger turbine housing to expose the turbine and the splined end of the turbine shaft. Insert the turbocharger turbine downwards into the center hole of the upper plate. Fit the splined end of the turbine shaft into the splined hole of the sleeve. Fit the fixed mandrel on the base into the square hole of the sleeve. The flange of the upper plate supports the bearing housing. Fix the flange to the upper plate by bolts and nuts passing through the positioning holes of the upper plate and the mounting holes of the flange. The turbine shaft is fixed in place by the coaxially fixed sleeve to prevent rotation during disassembly and assembly. Then, disassemble the intake housing, impeller, compressor housing, turbine, and turbine shaft in sequence to complete the disassembly of the turbocharger components. The installation sequence is the reverse of the disassembly sequence.

[0017] This invention offers reliable positioning and simple operation. The turbocharger is stably fixed on the workbench using a disassembly and assembly frame, achieving reliable positioning and fundamentally solving safety issues in turbocharger maintenance. The coaxial fixing of the turbine shaft, sleeve, and mandrel ensures anti-rotation positioning of the turbine shaft in the axial direction, improving assembly accuracy. The adjustable distance between the upper plate and the base, along with the replaceability of the upper plate, mandrel, and sleeve, allows for the repair of turbochargers of different sizes within the same series, improving the utilization rate of the disassembly and assembly tooling and increasing production efficiency. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1This is a 3D schematic diagram of the assembly / disassembly frame;

[0020] Figure 2 This is a schematic diagram of the sleeve; the left side of the diagram is its cross-sectional view, and the right side is its perspective view.

[0021] Figure 3 This is a front view of the supercharger after the turbine housing has been removed;

[0022] Figure 4 A schematic diagram of the overall assembly of the supercharger with the tooling of the present invention after the turbine housing has been removed;

[0023] Figure 5 This is a diagram showing the components of the turbocharger.

[0024] The reference numerals in the diagram are: base 1; spindle 2; support column 3; upper plate 4; lock nut 5; lock nut 6;

[0025] Mounting hole 11; Weight reduction hole 12; Mandrel plate mounting hole 13;

[0026] mandrel disc 21;

[0027] Center hole 41; Positioning hole 42;

[0028] Turbocharger 6; Turbine housing 61; Turbine 621; Turbine shaft 622; Bearing housing 63; Flange 631; Compressor housing 64; Impeller 65; Inlet housing 66;

[0029] Sleeve 7; Square hole 71; Spline hole 72. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0031] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the purpose of facilitating the description of the present invention or simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] In this invention, "a plurality of" refers to two or more (including two). The terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0033] Unless otherwise explicitly stated and limited, the terms “set up,” “install,” and “connect” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a direct connection or an indirect connection through an intermediate medium.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] The disassembly and assembly tooling of the present invention includes a disassembly and assembly frame and a sleeve 7.

[0036] like Figure 1 As shown, the assembly / disassembly frame includes

[0037] The base 1 has a vertically protruding mandrel 2 fixed at the center of its upper surface. The mandrel 2 has a square tenon. Preferably, the mandrel 2 and the base 1 are detachably connected. Specifically, the mandrel 2 is welded to the upper surface of the mandrel disc 21. The base 1 has a mandrel disc mounting hole 13 at its center, into which the mandrel disc 21 can be fitted. The mandrel disc 21 is then bolted to the base 1. This detachable connection allows for easy replacement of mandrels 2 of different specifications as needed.

[0038] The base 1 is fixed to the workbench by bolts through the mounting holes 11 at the four corners. For weight reduction purposes, the base 1 is also provided with several weight reduction holes 12.

[0039] The upper plate 4 is supported and fixed above the base 1 by the surrounding support columns 3. The middle part of each support column 3 passes through the upper plate 4 and is connected to the upper and lower locking nuts 5 by external threads to adjust or lock the height of the upper plate 4. The bottom of the support column 3 can be fixed by welding to the base 1, or it can be fixed by screwing to the base 1 and locking with the locking nuts 6. The upper plate 4 has a central hole 41 in the center, and two positioning holes 42 are symmetrically opened on the plate body on both sides of the central hole 41.

[0040] like Figure 2 As shown, the bottom of the sleeve 7 has a square hole 71 for fitting with the spindle 2, and the top of the sleeve has a spline hole 72 for fitting with the spline end of the turbine shaft 622 of the turbocharger 6.

[0041] Method for disassembling and assembling the turbocharger 6 using the disassembly and assembly tooling of the present invention:

[0042] First, remove the turbine housing 61 of the turbocharger 6 to expose the turbine 621 and the splined end of the turbine shaft 622. Insert the turbine 621 downwards into the center hole 41 of the upper plate 4. Fit the splined end of the turbine shaft 622 into the splined hole 72 of the sleeve 7. Fit the fixed spindle 2 on the base 1 into the square hole 71 of the sleeve 7. The flange 631 of the bearing body 63 is supported by the upper plate 4. The flange 631 is fixed to the upper plate 4 by bolts and nuts passing through the positioning hole 42 of the upper plate 4 and the mounting hole of the flange 631. The turbine shaft 622 is fixed in place by the coaxially fixed sleeve 7 to prevent rotation during disassembly and assembly. Then, the intake housing 66, impeller 65 (the impeller 65 is mounted on the turbine shaft 622), compressor housing 64, turbine 621, and turbine shaft 622 can be disassembled in sequence to complete the disassembly of the turbocharger components. The installation sequence is the reverse of the disassembly sequence.

[0043] 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, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A special disassembly and assembly tooling for repairing high-power diesel engine turbochargers, characterized in that, Includes disassembly / assembly brackets and sleeves; The assembly / disassembly frame includes: The base has a vertically protruding mandrel fixed at the center of its upper surface, and the mandrel is a square tenon. The upper plate is supported and fixed to the base by the surrounding support columns, and the gap and height of the upper plate relative to the base can be adjusted; a central hole for the turbine to pass through is opened in the center of the upper plate, and two positioning holes are symmetrically opened on the plate on both sides of the central hole for fixing and positioning with the flange of the bearing body. The bottom of the sleeve has a square hole for fitting with the mandrel, and the top of the sleeve has a spline hole for fitting with the spline end of the turbocharger's turbine shaft.

2. The special disassembly and assembly tooling for high-power diesel engine turbocharger maintenance as described in claim 1, characterized in that, The spindle and the base are detachably connected.

3. The special disassembly and assembly tooling for high-power diesel engine turbocharger maintenance as described in claim 2, characterized in that, The mandrel is welded and fixed to the upper surface of the mandrel disc. The base has a mandrel disc mounting hole in the center, which can be inserted into the mandrel disc mounting hole. The mandrel disc is then screwed and fixed to the base with bolts.

4. The special disassembly and assembly tooling for repairing high-power diesel engine turbochargers as described in claim 1, characterized in that, The base is fixed to the workbench through the mounting holes at the four corners and bolts.

5. The special disassembly and assembly tooling for high-power diesel engine turbocharger maintenance as described in claim 1, characterized in that, Several weight-reducing holes are also provided on the base.

6. The special disassembly and assembly tooling for repairing high-power diesel engine turbochargers as described in claim 1, characterized in that, The height of the upper plate is adjusted or locked by a structure in which the middle part of each support column passes through the upper plate and is connected to the upper and lower locking nuts by external threads.

7. The special disassembly and assembly tooling for repairing high-power diesel engine turbochargers as described in claim 1, characterized in that, The bottom of the support column is fixed by being screwed to the base and locked with a lock nut.

8. A method for disassembling and assembling a high-power diesel engine turbocharger, characterized in that, This includes a special disassembly and assembly tool for repairing high-power diesel engine turbochargers as described in claim 1.

9. A method for disassembling and assembling a high-power diesel engine turbocharger as described in claim 8, characterized in that, First, remove the turbocharger turbine housing to expose the turbine and the splined end of the turbine shaft. Insert the turbocharger turbine downwards into the center hole of the upper plate. Fit the splined end of the turbine shaft into the splined hole of the sleeve. Fit the fixed mandrel on the base into the square hole of the sleeve. The flange of the upper plate supports the bearing housing. Fix the flange to the upper plate by bolts and nuts passing through the positioning holes of the upper plate and the mounting holes of the flange. The turbine shaft is fixed in place by the coaxially fixed sleeve to prevent rotation during disassembly and assembly. Then, disassemble the intake housing, impeller, compressor housing, turbine, and turbine shaft in sequence to complete the disassembly of the turbocharger components. The installation sequence is the reverse of the disassembly sequence.

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