Tool for additive cladding of inner wall of engine cylinder sleeve

Abstract

The utility model provides a tool for additive cladding of the inner wall of an engine cylinder liner, the tool for additive cladding of the inner wall of the engine cylinder liner comprises a fixing sleeve, a plurality of fastening assemblies and a plurality of limiting pieces, the fixing sleeve is formed by buckling two half sleeves, and the inner walls of the half sleeves are suitable for being attached to the outer wall of the cylinder liner; the multiple fastening assemblies are arranged at intervals in the axial direction of the half sleeves, each fastening assembly comprises two hoops and two connecting pieces, the two hoops are suitable for being arranged on the outer sides of the two half sleeves respectively and abut against the outer walls of the half sleeves, and the hoops on the two half sleeves are aligned; the two connecting pieces are arranged at the two ends of the hoops respectively, and each connecting piece is connected with the ends of the two hoops. The multiple limiting pieces are in threaded connection with the half sleeves correspondingly and penetrate through the half sleeves to abut against the cylinder sleeve. According to the tool for additive cladding of the inner wall of the engine cylinder sleeve, the cylinder sleeve is hooped in the two formed fixing sleeves, then the limiting piece penetrates through the half sleeves to abut against the cylinder sleeve, sliding of the cylinder sleeve relative to the half sleeves is limited, and therefore deformation of the cylinder sleeve in the additive cladding process is effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical tooling, and in particular relates to a tooling for additive cladding of the inner wall of an engine cylinder liner. Background Art

[0002] During engine operation, the inner wall of the engine cylinder liner will experience wear, loss of material, and strain. Generally, after about 500 hours of operation, the inner wall of the cylinder liner will show varying degrees of damage. After this limit is exceeded, the cylinder liner must be replaced. Since this type of engine has 12 cylinder liners, they are a large number of damaged parts with high residual value. Using additive cladding technology to repair and recycle them has great economic value.

[0003] During repair, the inner wall is first subjected to additive cladding and then fine-machined using a machine tool.

[0004] However, due to the thin thickness of the cylinder body (3.5-5 mm), during the additive cladding process, the cylinder body is prone to deformation due to high temperature heat. Utility Model Content

[0005] The utility model provides a tool for additive cladding of the inner wall of an engine cylinder liner, aiming to solve the technical problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a tool for additive cladding of the inner wall of an engine cylinder liner, comprising:

[0007] The fixed sleeve is formed by buckling two half sleeves, and the inner wall of the half sleeve is adapted to fit the outer wall of the cylinder sleeve;

[0008] A plurality of fastening assemblies are arranged axially at intervals along the half sleeves, each of the fastening assemblies includes two hoops and two connecting pieces, the two hoops are adapted to be respectively arranged on the outside of the two half sleeves, abutting against the outer walls of the half sleeves, and the hoops on the two half sleeves are aligned; the two connecting pieces are respectively arranged at both ends of the hoops, and each connecting piece is connected to the ends of the two hoops;

[0009] A plurality of limiting members are respectively connected with the half sleeves through threads and pass through the half sleeves to abut against the cylinder sleeve.

[0010] In a possible implementation of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by the present invention, a plurality of limiting grooves are provided on the outer wall of the half liner, and the clamp is clamped in the limiting grooves.

[0011] In a possible implementation of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by the present invention, a protective layer is provided on the inner wall of the half liner, and the hardness of the protective layer is lower than the hardness of the cylinder liner.

[0012] In a possible implementation of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by the present invention, anti-slip grooves are provided on the protective layer.

[0013] In a possible implementation of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by the present invention, the protective layer is a copper layer.

[0014] In a possible implementation of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by the present invention, two fastening assemblies are provided on the fixing sleeve at intervals along the axial direction.

[0015] In a possible implementation of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by the present invention, the connecting member includes a fastening bolt and a fastening nut, and the fastening bolt passes through the two clamps in sequence and is connected to the fastening nut.

[0016] In a possible implementation of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by the present invention, the limiting member is a limiting screw, a threaded hole is provided on the side wall of the half sleeve, the limiting screw is passed through the threaded hole, is threadedly connected to the half sleeve, and is suitable for abutting against the cylinder liner.

[0017] In a possible implementation of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by the present invention, a copper block is provided at the end of the limit screw, and the copper block is suitable for abutting against the cylinder liner.

[0018] The beneficial effect of the tooling for additive cladding of the inner wall of the engine cylinder liner provided by the utility model is as follows: compared with the prior art, the tooling for additive cladding of the inner wall of the engine cylinder liner provided by the utility model, before additive cladding of the cylinder liner, first uses two half-sleeves to buckle on the outer side of the cylinder liner, and uses the clamps and the connecting parts to fasten the two half-sleeves together, clamps the cylinder liner in the two formed fixed sleeves, and then uses the limiter to pass through the half-sleeves and abut against the cylinder liner, thereby limiting the sliding of the cylinder liner relative to the half-sleeves, thereby effectively avoiding deformation of the cylinder liner during the additive cladding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a tool for additive cladding of an engine cylinder liner inner wall provided by an embodiment of the present utility model;

[0020] Figure 2 A schematic diagram of the main structure of a tool for additive cladding of an engine cylinder liner inner wall provided by an embodiment of the present utility model;

[0021] Figure 3 A schematic top view of the structure of a tool for additive cladding of an engine cylinder liner inner wall provided by an embodiment of the present utility model;

[0022] Figure 4For the Figure 2 Cross-sectional structural diagram along line AA;

[0023] Figure 5 For the Figure 3 Cross-sectional structural diagram along line BB;

[0024] Description of reference numerals:

[0025] 10. Half set; 11. Protective layer; 20. Clamp; 31. Fastening bolt; 32. Fastening nut;

[0026] 41. Limit screw; 42. Copper block; 50. Cylinder liner. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. Technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0031] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be subsequently positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used herein are interpreted accordingly.

[0033] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0034] Please also refer to Figures 1 to 5The tooling for additive cladding of the inner wall of an engine cylinder liner provided by the present invention is now described. The tooling for additive cladding of the inner wall of an engine cylinder liner comprises a fixing sleeve, a plurality of fastening assemblies, and a plurality of limiting members. The fixing sleeve is formed by fastening two half sleeves 10, the inner wall of each half sleeve 10 being adapted to fit the outer wall of the cylinder liner 50; the plurality of fastening assemblies are spaced axially along the half sleeves 10, each fastening assembly comprising two clamps 20 and two connecting members. The two clamps 20 are adapted to be respectively arranged on the outer sides of the two half sleeves 10, abutting against the outer walls of the half sleeves 10, with the clamps 20 on the two half sleeves 10 aligned; the two connecting members are respectively arranged at both ends of the clamps 20, each connecting member being connected to the ends of the two clamps 20; and the plurality of limiting members are respectively threadedly connected to the half sleeves 10 and pass through the half sleeves 10 to abut against the cylinder liner 50.

[0035] The beneficial effect of the tooling for additive cladding of the inner wall of the engine cylinder liner provided by the utility model is as follows: compared with the prior art, the tooling for additive cladding of the inner wall of the engine cylinder liner provided by the utility model, before additive cladding of the cylinder liner 50, first uses two half-sleeves 10 to buckle on the outside of the cylinder liner 50, and uses the clamp 20 and the connecting piece to fasten the two half-sleeves 10 together, clamps the cylinder liner 50 in the two formed fixed sleeves, and then uses a limit piece to pass through the half-sleeve 10 and abut against the cylinder liner 50, restricting the cylinder liner 50 from sliding relative to the half-sleeve 10, thereby effectively avoiding deformation of the cylinder liner 50 during the additive cladding process.

[0036] like Figure 2 and Figure 5 As shown, in a specific embodiment of the tooling for additive cladding of the inner wall of the engine cylinder liner provided by an embodiment of the present invention, a plurality of limit grooves are provided on the outer wall of the half sleeve 10, and the clamp 20 is clamped in the limit groove to locate the installation position of the clamp 20 and limit the axial sliding of the clamp 20 along the half sleeve 10.

[0037] like Figures 1 to 5 As shown, in a specific embodiment of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by an embodiment of the present invention, a protective layer 11 is provided on the inner wall of the half sleeve 10, and the hardness of the protective layer 11 is lower than the hardness of the cylinder liner 50 to prevent the cylinder liner 50 from being scratched.

[0038] Furthermore, in a specific embodiment of the tooling for additive cladding of the inner wall of an engine cylinder liner provided in an embodiment of the present invention, anti-slip grooves are provided on the protective layer 11 to increase the friction between the cylinder liner 50 and the half sleeve 10, thereby preventing the cylinder liner 50 from rotating relative to the fixed sleeve during processing.

[0039] Specifically, in a specific implementation of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by an embodiment of the present invention, the protective layer 11 is a copper layer.

[0040] It should be noted that the base material of the half sleeve 10 is Q345 or 42CrMo, and a copper protective layer 11 is provided on the inner wall thereof. On the one hand, it is not easy to rust, and on the other hand, it can effectively avoid scratching the cylinder sleeve 50.

[0041] like Figure 1 and Figure 2 As shown, in a specific implementation of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by an embodiment of the present utility model, two fastening assemblies are provided on the fixing sleeve at intervals along the axial direction.

[0042] Specifically, the depth of the limiting groove is 2 mm, and the two fastening components are respectively arranged at one quarter and three quarters of the fixing sleeve.

[0043] like Figure 1 and Figure 2 As shown, in a specific embodiment of the tooling for additive cladding of the inner wall of an engine cylinder liner provided by an embodiment of the present invention, the connecting piece includes a fastening bolt 31 and a fastening nut 32, and the fastening bolt 31 passes through the two clamps 20 in sequence and is connected to the fastening nut 32.

[0044] like Figure 1 and Figure 4 As shown, in a specific embodiment of the tooling for additive cladding of the inner wall of the engine cylinder liner provided by an embodiment of the present invention, the limiting member is a limiting screw 41, a threaded hole is opened on the side wall of the half sleeve 10, the limiting screw 41 is passed through the threaded hole, is threadedly connected to the half sleeve 10, and is suitable for abutting against the cylinder liner 50.

[0045] Further, such as Figure 4 As shown, in a specific embodiment of the tooling for additive cladding of the inner wall of the engine cylinder liner provided by an embodiment of the present invention, a copper block 42 is provided at the end of the limit screw 41, and the copper block 42 is suitable for abutting against the cylinder liner 50. The hardness of the copper block 42 is less than the hardness of the cylinder liner 50, so it can effectively avoid damaging the cylinder liner 50.

[0046] Specifically, the end of the copper block 42 is configured in a shape of a coin, and fits against the outer wall of the cylinder sleeve 50 .

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tool for additive cladding of the inner wall of an engine cylinder liner, characterized in that: include: The fixed sleeve is formed by buckling two half sleeves, and the inner wall of the half sleeve is adapted to fit the outer wall of the cylinder sleeve; A plurality of fastening assemblies are arranged axially at intervals along the half sleeves, each of the fastening assemblies includes two hoops and two connecting pieces, the two hoops are adapted to be respectively arranged on the outside of the two half sleeves, abutting against the outer walls of the half sleeves, and the hoops on the two half sleeves are aligned; the two connecting pieces are respectively arranged at both ends of the hoops, and each connecting piece is connected to the ends of the two hoops; and A plurality of limiting members are respectively connected with the half sleeves through threads and pass through the half sleeves to abut against the cylinder sleeve.

2. The tool for additive cladding of the inner wall of an engine cylinder liner according to claim 1, characterized in that: A plurality of limiting grooves are provided on the outer wall of the half sleeve, and the clamp is clamped in the limiting grooves.

3. The tool for additive cladding of the inner wall of an engine cylinder liner according to claim 1, characterized in that: A protective layer is provided on the inner wall of the half sleeve, and the hardness of the protective layer is lower than the hardness of the cylinder sleeve.

4. The tool for additive cladding of the inner wall of an engine cylinder liner according to claim 3, characterized in that: The protective layer is provided with anti-slip grooves.

5. The tool for additive cladding of the inner wall of an engine cylinder liner according to claim 3, characterized in that: The protective layer is a copper layer.

6. The tool for additive cladding of the inner wall of an engine cylinder liner according to claim 1, characterized in that: The fixing sleeve is provided with two fastening components spaced apart along the axial direction.

7. The tool for additive cladding of the inner wall of an engine cylinder liner according to claim 1, characterized in that: The connecting piece includes a fastening bolt and a fastening nut, and the fastening bolt passes through the two hoops in sequence and is connected to the fastening nut.

8. The tool for additive cladding of the inner wall of an engine cylinder liner according to claim 1, characterized in that: The limiting member is a limiting screw. A threaded hole is provided on the side wall of the half sleeve. The limiting screw is passed through the threaded hole, is threadably connected to the half sleeve, and is suitable for abutting against the cylinder sleeve.

9. The tool for additive cladding of the inner wall of an engine cylinder liner according to claim 8, characterized in that: A copper block is provided at the end of the limit screw, and the copper block is suitable for abutting against the cylinder sleeve.

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