Bidirectional guide installation auxiliary device for inserting sleeve of diesel injector

Abstract

A base body is of a triangular plate-shaped structure, a positioning connecting assembly connected with a positioning pin hole in the upper plane of an oil injector hole in a matched mode is arranged on the plate face of the base body, and an arc groove which is communicated with one side wall and corresponds to the oil injector hole in position is formed in the plate face of the base body. An alignment column used for conducting circumferential orientation positioning on a radial hole in the oil sprayer plug bush is fixed to the base body, an alignment groove penetrating to the radial arc groove hole wall is formed in the alignment column, and an alignment mark matched with the alignment groove is arranged on the oil sprayer plug bush. And the radial hole is aligned with the high-pressure oil pipe hole in the cylinder cover body when the alignment mark on the oil sprayer plug bush which penetrates through the arc groove and is arranged in the oil sprayer hole is aligned with the alignment groove. The defect caused by the fact that the radial hole does not correspond to the high-pressure oil pipe hole of the cylinder cover body in position when the oil injector plug bush is assembled is overcome, and the problem that the radial hole is not assembled correctly can be found in time and corrected at any time in the assembling process of the oil injector plug bush.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel engines, and in particular relates to a bidirectional guiding installation auxiliary device for a diesel engine injector plug sleeve. Background Art

[0002] The injector sleeve is assembled in the injector hole of the cylinder head body. The small diameter end of the injector sleeve is interference fit with the cylinder head injector hole, and an O-ring is installed at the large diameter section sealing groove. The injector sleeve has radial openings to form radial holes for the high-pressure oil pipe to pass through. The injector assembly couple is assembled inside the injector sleeve, and the outer surface of the injector sleeve contacts the cooling water in the cylinder head cooling water chamber. At present, during production, the installation process of the injector sleeve is: draw a line on the upper surface of the injector hole of the cylinder head body, which is the center line of the high-pressure oil pipe hole, and make an alignment mark on the injector sleeve. Use your eyes to observe and align the alignment mark on the injector sleeve with the line on the upper surface of the injector hole on the cylinder head body, and then insert the injector sleeve into the cylinder head body.

[0003] The injector sleeve is a thin-walled long cylinder with radial holes. The radial holes are used for the high-pressure oil pipe to pass through. During assembly, the injector sleeve mark needs to be aligned with the plane line mark on the injector hole of the cylinder head body. Due to the large accuracy error of naked eye observation, there is a height parallax of the injector sleeve before and after installation, resulting in inaccurate alignment. After the injector sleeve is assembled, the radial holes on the sleeve are not aligned with the high-pressure oil pipe holes on the cylinder head body. Since the lower end of the sleeve and the cylinder head body are interference fit, it is difficult to disassemble and reinstall the injector sleeve, and this problem is not easy to find during the assembly process, resulting in the disassembly and reinstallation of the injector sleeve with assembly problems, wasting manpower and material resources, and becoming a technical bottleneck restricting production progress. Therefore, it is necessary to make improvements to the above problems. Utility Model Content

[0004] The technical problem solved by the utility model is as follows: a two-way guiding installation auxiliary device for a diesel engine fuel injector sleeve is provided, by arranging a base body with an alignment column on the plane of the fuel injector hole, and arranging an alignment groove matched with the alignment mark on the fuel injector sleeve on the alignment column, when installing the fuel injector sleeve, it is only necessary to ensure that the radial hole is aligned with the alignment groove position, thereby solving the defect caused by the mismatch between the radial hole and the high-pressure oil pipe hole position of the cylinder head body when assembling the fuel injector sleeve, and realizing that the problem of improper assembly of the radial hole can be timely discovered and corrected at any time during the assembly process of the fuel injector sleeve, without affecting the normal assembly of the fuel injector sleeve, facilitating the observation of the installation position of the fuel injector sleeve, ensuring the installation position accuracy of the radial hole on the fuel injector sleeve, and the orientation of the radial hole can be observed and determined during the assembly process, with simple structure, novel design, convenient and quick operation, low cost, high use value, and providing conditions for high-precision and high-quality installation of the fuel injector sleeve.

[0005] The technical solution adopted by the utility model is as follows: a bidirectional guiding installation auxiliary device for a diesel engine injector sleeve, comprising a base body, the base body being in a triangular plate-shaped structure, a positioning connection assembly being provided on the plate surface of the base body and being adapted to be connected with a positioning pin hole on a plane of an injector hole, an arc groove penetrating with one of the side walls and corresponding to the position of the injector hole being formed on the plate surface of the base body, an alignment column being fixed on the base body for circumferentially positioning the radial hole on the injector sleeve, and an alignment groove being provided on the alignment column and penetrating to the hole wall of the arc groove, an alignment mark matching with the alignment groove being provided on the injector sleeve, and when the alignment mark on the injector sleeve that passes through the arc groove and is inserted into the injector hole is aligned with the alignment groove, the radial hole is aligned with the high-pressure oil pipe hole on the cylinder head body.

[0006] Among them, the positioning and connecting assembly includes a cylindrical pin and a diamond pin, and the plate surface at the two corner positions of the base is provided with pin holes located on the same center line, and one end of the cylindrical pin and the diamond pin are respectively adapted and fixed in the pin holes at the corresponding positions, and the other ends of the cylindrical pin and the diamond pin are respectively adapted to the two positioning pin holes on the upper plane of the injector hole, and the alignment column is vertically fixed on the plate surface at the other corner position of the base.

[0007] Furthermore, the diamond pin is positioned by a positioning pin 1 provided on the base.

[0008] Furthermore, the diameter of the arc groove is 1 to 2 mm larger than the maximum outer diameter of the injector socket.

[0009] Furthermore, the base is an isosceles triangle, and the outer walls of the top corner and two bottom corners of the base are both rounded.

[0010] Furthermore, the plate surface of the base body facing the injector hole is a plane, while the plate surface of the base body on the opposite side of the injector hole is a stepped surface with a plate thickness greater than that at other positions for mounting and positioning the connection component.

[0011] Furthermore, the alignment posts are circumferentially positioned on the base by positioning pins provided on the base.

[0012] The advantages of this utility model compared with the prior art:

[0013] 1. This technical solution arranges a base with an alignment column on the plane of the injector hole, and arranges an alignment groove on the alignment column that matches the alignment mark on the injector plug sleeve. When installing the injector plug sleeve, it is only necessary to ensure that the radial hole is aligned with the alignment groove, which solves the defect caused by the mismatch between the radial hole and the high-pressure oil pipe hole of the cylinder head body when the injector plug sleeve is assembled, and enables the injector plug sleeve to promptly discover and correct the problem of improper assembly of the radial hole at any time during the assembly process;

[0014] 2. This technical solution adopts a structure in which a cylindrical pin and a circumferentially positioned diamond pin are arranged on the base body and respectively matched with the positioning pin holes on the plane of the injector hole, so as to realize the positioning of the base body on one side of the cylinder head body with two pins, thereby ensuring the stability and reliability of the installation of the base body on the cylinder head body;

[0015] 3. This technical solution has a simple structure, novel design, convenient and quick operation, low cost, does not affect the normal assembly of the injector sleeve, is easy to observe the installation position of the injector sleeve, ensures the installation position accuracy of the radial hole on the injector sleeve, and can always observe and determine the orientation of the radial hole during the assembly process. It has high use value and provides conditions for high-precision and high-quality installation of the injector sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the front view of the structure of the utility model;

[0017] Figure 2 for Figure 1 Middle AA cross-section diagram;

[0018] Figure 3 It is a schematic diagram of the injector plug structure;

[0019] Figure 4 Top view of the injector socket after installation DETAILED DESCRIPTION

[0020] The following will be combined with the embodiment of the present utility model Figure 1-4 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that, in this article, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations. The elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0023] Two-way guide installation auxiliary device for diesel engine injector socket, such as Figure 1-4 As shown, it includes a base 1, the base 1 is a triangular plate structure, a positioning connection component adapted to be connected with a positioning pin hole 6 on the plane of the injector hole 7 is provided on the plate surface of the base 1, a circular arc groove 2 penetrating one of the side walls and corresponding to the position of the injector hole 7 is formed on the plate surface of the base 1, an alignment column 4 for circumferentially positioning the radial hole 9 on the injector plug sleeve 8 is fixed on the base 1, and an alignment groove 3 penetrating to the hole wall of the radial circular arc groove 2 is formed on the alignment column 4, an alignment mark matching the alignment groove 3 is provided on the injector plug sleeve 8, and when the alignment mark on the injector plug sleeve 8 passing through the circular arc groove 2 and inserted into the injector hole 7 is aligned with the alignment groove 3, the radial hole 9 is aligned with the high-pressure oil on the cylinder head body. The pipe holes are aligned, wherein the alignment mark on the injector socket 8 is a small hole of φ3 provided on the outer wall of the upper end of the injector socket 8, and it is only necessary to ensure that the small hole on the injector socket 8 always corresponds to the position of the alignment groove 3; in the above structure, by arranging a base 1 with an alignment column 4 on the injector hole 7 in a plane, and arranging an alignment groove 3 adapted to the alignment mark on the injector socket 8 on the alignment column 4, when installing the injector socket 8, it is only necessary to ensure that the radial hole 9 is aligned with the alignment groove 3, which solves the defect caused by the non-correspondence between the radial hole 9 and the high-pressure oil pipe hole of the cylinder head body when assembling the injector socket 8, and realizes that the problem of improper assembly of the radial hole 9 can be timely discovered and corrected at any time during the assembly process of the injector socket 8;

[0024] The specific structure of the positioning connection component is as follows: the positioning connection component includes a cylindrical pin 10 and a diamond pin 5, and the plate surface at the two corner positions of the base 1 is provided with pin holes located on the same center line, and one end of the cylindrical pin 10 and the diamond pin 5 are respectively adapted and fixed in the pin holes at the corresponding positions, and the other ends of the cylindrical pin 10 and the diamond pin 5 are respectively adapted to the two positioning pin holes 6 on the plane of the injector hole 7, and the alignment column 4 is vertically fixed on the plate surface at the other corner position of the base 1; specifically, the diamond pin 5 is positioned by a positioning pin 11 provided on the base 1; in the above structure, a structure is adopted in which a cylindrical pin 10 and a circumferentially positioned diamond pin 5 are provided on the base 1 and are respectively adapted and connected with the positioning pin holes 6 on the plane of the injector hole 7, so as to realize the two-pin positioning of the base 1 on one side of the cylinder head body, thereby ensuring the stable reliability of the installation of the base 1 on the cylinder head body;

[0025] In order to ensure that the injector plug sleeve 8 can pass through the circular arc groove 2 smoothly, the diameter of the circular arc groove 2 is made 1 to 2 mm larger than the maximum outer diameter of the injector plug sleeve 8 .

[0026] Among them, the base 1 is an isosceles triangle, and the outer walls of the top angle and two bottom angles of the base 1 are set to be rounded; specifically, the plate surface of the base 1 facing the injector hole 7 is a plane, and the plate surface of the base 1 on the opposite side of the injector hole 7 is a step surface for installing the positioning connection component, and the plate thickness is greater than the plate thickness at other positions. This structure can reduce the weight of the base 1 and facilitate loading and unloading operations; specifically, the alignment column 4 is circumferentially positioned on the base 1 by the positioning pin 12 provided on the base 1, thereby ensuring the stability of the orientation of the alignment groove 3 on the alignment column 4, avoiding circumferential misalignment and affecting the installation accuracy of the injector socket 8, wherein the alignment column 4 can be designed with a full cylindrical lower half and a semi-circular upper half structure, so as to reduce the weight of the alignment column 4 while ensuring stable and reliable installation.

[0027] This structure is clever, and does not interfere with the assembly work during the whole process of assembling the injector socket 8. The two positioning pin holes 6 on the plane of the injector are cleverly used as the device positioning holes. The height of the alignment column 4 is set appropriately. During the whole process of installing the injector socket 8, it is possible to observe whether the alignment is correct, and achieve error-free sight. Even if the injector socket 8 rotates radially during the assembly process, it can be corrected in time to ensure correct installation at one time without rework. After field verification and use, the injector socket installation guide device has achieved the original intention of the utility model, achieved reliable alignment during the whole process of assembling the injector socket 8, and can correct the injector socket 8 at any time, avoiding repeated disassembly and assembly of the injector socket 8, and solving the problems of low assembly efficiency and substandard assembly quality of the injector socket 8.

[0028] The technical solution has a simple structure, novel design, convenient and quick operation, low cost, does not affect the normal assembly of the injector socket 8, is easy to observe the installation position of the injector socket 8, ensures the installation position accuracy of the radial holes on the injector socket 8, and can always observe and determine the orientation of the radial holes during the assembly process. It has high use value, realizes radial and axial bidirectional guidance of the installation of the injector socket 8, and provides conditions for high-precision and high-quality installation of the injector socket 8.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A two-way guide installation auxiliary device for a diesel engine injector socket, characterized in that: The invention comprises a base (1), the base (1) being a triangular plate-shaped structure, a positioning connection assembly adapted to be connected with a positioning pin hole (6) on a plane of an injector hole (7) is provided on the plate surface of the base (1), a circular arc groove (2) penetrating one of the side walls and corresponding to the position of the injector hole (7) is formed on the plate surface of the base (1), an alignment column (4) for circumferentially positioning a radial hole (9) on an injector plug sleeve (8) is fixed on the base (1), and an alignment groove (3) penetrating through the hole wall of the circular arc groove (2) is formed on the alignment column (4), an alignment mark matching with the alignment groove (3) is provided on the injector plug sleeve (8), and when the alignment mark on the injector plug sleeve (8) passing through the circular arc groove (2) and inserted into the injector hole (7) is aligned with the alignment groove (3), the radial hole (9) is aligned with the high-pressure oil pipe hole on the cylinder head body.

2. The two-way guiding installation auxiliary device for a diesel engine injector socket according to claim 1, characterized in that: The positioning connection assembly comprises a cylindrical pin (10) and a diamond pin (5); pin holes located on the same center line are arranged on the plate surface at two corner positions of the base (1); one end of the cylindrical pin (10) and the diamond pin (5) are respectively adapted and fixed in the pin holes at corresponding positions; the other ends of the cylindrical pin (10) and the diamond pin (5) are respectively adapted to two positioning pin holes (6) on the upper plane of the injector hole (7); and the alignment column (4) is vertically fixed on the plate surface at another corner position of the base (1).

3. The two-way guiding installation auxiliary device for a diesel engine injector socket according to claim 2, characterized in that: The diamond pin (5) is positioned by a positioning pin (11) provided on the base (1).

4. The two-way guiding installation auxiliary device for a diesel engine injector socket according to claim 1, characterized in that: The diameter of the circular arc groove (2) is 1 to 2 mm larger than the maximum outer diameter of the injector plug sleeve (8).

5. The two-way guiding installation auxiliary device for a diesel engine injector socket according to claim 1, characterized in that: The base (1) is an isosceles triangle, and the outer walls of the top corner and two bottom corners of the base (1) are both configured as rounded corners.

6. The two-way guiding installation auxiliary device for a diesel engine injector socket according to any one of claims 1 to 5, characterized in that: The plate surface of the base body (1) facing the injector hole (7) is a plane, while the plate surface of the base body (1) on the opposite side of the injector hole (7) is a stepped surface with a plate thickness greater than that at other positions for mounting and positioning the connection component.

7. The two-way guiding installation auxiliary device for a diesel engine injector socket according to claim 6, characterized in that: The alignment column (4) is circumferentially positioned on the base (1) by means of a second positioning pin (12) provided on the base (1).

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