CN216967635U - Assembling tool for rocker arm bushing of diesel engine - Google Patents
Assembling tool for rocker arm bushing of diesel engine Download PDFInfo
- Publication number
- CN216967635U CN216967635U CN202123076979.5U CN202123076979U CN216967635U CN 216967635 U CN216967635 U CN 216967635U CN 202123076979 U CN202123076979 U CN 202123076979U CN 216967635 U CN216967635 U CN 216967635U
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- guide block
- block body
- rocker arm
- knurled nut
- bushing
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Abstract
The technical scheme of the utility model discloses an assembling tool for a rocker arm bushing of a diesel engine, which comprises a guide block body in a stepped shaft shape; a knurled nut in a stepped shaft shape; when in use, the double-end stud is connected with the guide block body and the knurled nut; and a distance tube placed below the guide block body when in use. The assembling tool disclosed by the utility model is small in size, light in weight, simple in structure and convenient to operate, improves the working efficiency and lightens the working strength. Meanwhile, the guide block body and the knurled nut can protect the rocker arm bushing during installation, and deformation of parts is avoided. The assembling tool can meet the requirements of assembling operation of rocker arm bushings of diesel engines of different models.
Description
Technical Field
The utility model relates to the technical field of diesel engine assembling tools, in particular to an assembling tool for a rocker arm bushing of a diesel engine.
Background
For a large ship power diesel engine, a rocker arm bushing is an important part in a valve actuating mechanism, influences the dynamic property, stability and reliability of the valve actuating mechanism, and concerns about the safety of a user.
The working conditions of the rocker arm bushing of the diesel engine are severe, the rocker arm bushing is subjected to impact and abrasion of a rocker arm body and a rocker arm shaft at high temperature, and the rocker arm bushing is a thin-wall porous part, so that the assembly of the rocker arm bushing is inevitably involved in the maintenance process.
In order to meet the requirement of shortening the assembly and maintenance period of the diesel engine, the assembly operation efficiency of the diesel engine needs to be improved, the existing rough and backward assembly tool cannot meet the requirement, and one assembly tool can only meet the requirement of a certain specific type of diesel engine, so that the resource waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an assembling tool for a rocker arm bushing of a diesel engine, which has a simple structure and is convenient to operate, so that the effects of facilitating operation, improving efficiency, shortening operation time and ensuring assembling quality are achieved, and meanwhile, the assembling tool can meet the requirements of various types of diesel engines under different conditions.
In order to solve the technical problem, the utility model provides an assembling tool for a rocker arm bushing of a diesel engine, which comprises
A guide block body in a stepped shaft shape;
a knurled nut in a stepped shaft shape;
a stud connecting the guide block body and the knurled nut in use; and
when in use, the positioning pipe is placed below the guide block body.
Optionally, the surfaces of the small shaft ends of the guide block body and the knurled nut are respectively drilled with a first mounting hole and a second mounting hole vertically inwards.
Optionally, two ends of the stud are respectively connected with the guide block body and the knurled nut through the first mounting hole and the second mounting hole.
Optionally, the axes of the knurled nut, the stud and the guide block body after installation coincide.
Optionally, the axes of the distance tube, the guide block body, the knurled nut, and the stud remain coincident in use.
Optionally, the knurled nut and the small shaft end of the guide block body are of the same diameter.
Optionally, a chamfer is arranged at the inner round openings at two ends of the distance tube.
In order to solve the technical problem, the utility model further provides a use method of the assembling tool for the rocker arm bushing of the diesel engine, wherein the use method comprises the following steps:
step 1: screwing the stud into the guide block body, and sleeving the rocker arm bushing on the small end of the guide block body;
step 2: inserting the small end of the knurled nut into an inner hole of the rocker arm bushing, and screwing the knurled nut with the stud until the rocker arm bushing is fixed between the knurled nut and the guide block body in the axial direction;
and 3, step 3: placing the combination of the guide block body, the stud, the knurled nut and the rocker arm bushing above the air valve rocker arm, and inserting the large end of the guide block body into the mounting opening of the air valve rocker arm;
and 4, step 4: and placing a distance tube below the air valve rocker arm, and knocking the large end of the knurled nut one by one until the rocker arm bushing is completely installed in the installation opening of the air valve rocker arm.
Optionally, step 2 further comprises clamping the rocker arm bushing using a clamping tool.
Optionally, the inner diameter of the distance tube is larger than the mounting opening of the valve rocker and the large-end diameter of the guide block body.
The technical scheme of the utility model has the beneficial effects that:
the assembling tool disclosed by the utility model is small in size, light in weight, simple in structure and convenient to operate, improves the working efficiency and lightens the working strength. Meanwhile, the guide block body and the knurled nut can protect the rocker arm bushing during installation, and deformation of parts is avoided. The assembling tool can meet the requirements of assembling operation of rocker arm bushings of diesel engines of different types.
Drawings
FIG. 1 is a schematic structural view of an assembly tool for a diesel rocker bushing in an embodiment of the utility model;
FIG. 2 is a schematic view of an assembly tool for a diesel engine rocker arm bushing and an assembly of a valve rocker arm according to an embodiment of the utility model;
fig. 3 is a cross-sectional view of fig. 2.
The specific implementation mode is as follows:
the utility model is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Referring to fig. 1, an assembling tool for a rocker arm bushing of a diesel engine of an embodiment is shown, wherein the assembling tool comprises a guide block body 1 (comprising a guide block large end 11 and a guide block small end 12) in a stepped shaft shape; a knurled nut 4 (comprising a nut large end 41 and a nut small end 42) in a stepped shaft shape; when in use, the stud 2 is connected with the guide block body 1 and the knurled nut 4; and a distance tube 3 placed below the guide block body 1 in use.
In this embodiment, the surfaces of the small shaft ends of the guide block body 1 and the knurled nut 4 are respectively drilled vertically inward with a first mounting hole 13 and a second mounting hole 43.
In this embodiment, two ends of the stud 2 are respectively connected to the guide block body 1 and the knurled nut 4 through the first mounting hole 13 and the second mounting hole 43.
In this embodiment, the axes of the knurled nut 4, the stud 2, and the guide block body 1 after installation coincide.
In this embodiment, the axes of the guide block body 1, the knurled nut 4, the stud 2, and the spacer 3 are kept coincident when in use.
In this embodiment, the knurled nut 4 is identical to the small shaft end of the guide block body 1 in diameter.
In this embodiment, the inner circular openings at both ends of the distance tube 3 are provided with chamfers 31.
The features and functions of the present invention will be further understood from the following description.
Referring to fig. 2 and 3, in order to solve the above technical problem, the present invention further provides a method for using an assembling tool for a rocker arm bushing of a diesel engine, wherein the method comprises the following steps:
step 1: the stud 2 is screwed into the guide block body 1, and the rocker arm bushing 6 is sleeved on the small end 12 of the guide block body 1.
And 2, step: the small end 42 of the knurled nut 4 is inserted into the inner bore of the rocker arm bushing 6 and screwed with the stud 2 until the rocker arm bushing 6 is fixed in the axial direction between the knurled nut 4 and the guide block body 1.
And step 3: the combined body of the guide block body 1, the stud bolt 2, the knurled nut 4 and the rocker arm bushing 6 is placed above the air valve rocker arm 5, and the large end 11 of the guide block body 1 is inserted into the mounting opening of the air valve rocker arm 5.
And 4, step 4: the distance tube 3 is placed below the valve rocker arm 5, and the large end 41 of the knurled nut 4 is knocked successively until the rocker arm bushing 6 is completely installed in the installation opening of the valve rocker arm 5.
In this embodiment, step 2 further comprises clamping the rocker arm bushing 6 using a clamping tool.
In the embodiment, the inner diameter of the distance tube 3 is larger than the diameters of the mounting opening of the air valve rocker arm 5 and the large end 11 of the guide block body 1.
The details will be described below.
Referring to fig. 1, 2 and 3 in detail, the assembling tool for the rocker arm bushing of the diesel engine disclosed by the utility model comprises a guide block body 1, a distance tube 3 and a knurled nut 4. Guide block body 1 links together through stud 2 with knurled nut 4, places the rocking arm bush 6 of waiting to assemble between the two, and knurled nut 4 places in 5 tops of pneumatic valve rocking arm through screwing up clamp rocking arm bush 6, and distance pipe 3 places in 5 below of diesel engine pneumatic valve rocking arm, supports pneumatic valve rocking arm 5.
The outer diameter of the large shaft 11 of the guide block body 1 is slightly smaller than the diameter of a mounting hole of the air valve rocker arm 5, the basic size is 68mm, and the gap between the guide block body and the air valve rocker arm is 1 to 5 threads.
The guide block body 1 is composed of two parts, one part is a stepped shaft, a large shaft 11 is slightly smaller than a mounting hole of a rocker arm bushing 6, a small shaft 12 is inserted into the hole of the rocker arm bushing 6 and tightly attached to the inner wall of the rocker arm bushing 6, abnormal deformation does not occur after the rocker arm bushing 6 is stressed, a corresponding threaded hole 13 of M12 is arranged at the central position of the small shaft 12, and the other part is a stud 2 and can be used for being connected with a knurled nut 4. The length of the small shaft 12 of the guide block body 1 inserted into the hole of the rocker arm bushing 6 is 15mm, and the length of the large shaft 11 protruding out of the rocker arm bushing 6 is 42 mm.
The height of the distance tube 3 is larger than that of the large shaft 11 of the guide block body 1, and the inner diameter of the distance tube is larger than the outer diameter of the large shaft 11 of the guide block body 1, so that the rocker arm bushing 6 is ensured to have enough space for installation. The knurled nut 4 is of a stepped type, the small shaft 42 is partially connected with the guide block body 1 through the stud 2, the length of the small shaft 42 inserted into the hole of the rocker arm bushing 6 is 15mm, the upper plane is also provided with a boss 44 with the height of 2mm for bearing knocking force, and knurling on the surface of the middle part can be used for manual screwing.
The guide block body 1 is a stepped shaft and is made of conventional alloy steel. The outer diameter of the large shaft 11 is 68mm, the outer diameter of the small shaft 12 is 62mm, the guide block is required to be guaranteed to be 1 to 5 threads with the gap of the mounting hole of the air valve rocker arm 5 in the working process, the guide block is influenced to be downward when the gap is too small, the mounting hole of the air valve rocker arm 5 is easy to scratch, the guide function of an assembly tool is influenced by shaking the left and right sides when the gap is too large, the inner hole of the rocker arm bushing 6 is required to be tightly attached to the small shaft 12 of the guide block body 1, otherwise, the thin-wall bushing is easy to cause to deform when the impact force is applied, and the edge position is deformed.
The distance tube 3 is placed below the air valve rocker arm 5, the center of the distance tube is basically on the same axis with the rocker arm bushing 6, chamfers 31 of 2mm are arranged on the upper edge and the lower edge of the inner wall of the distance tube, and the distance tube is made of steel tubes with conventional sizes, 89mm in outer diameter and 5mm in thickness.
The 4 central points of annular knurl nut have M12's screw hole, are connected with directional piece body 1 through stud 2, can adjust the size of erecting tool clamp force through the mode of artifical screwing up, and annular knurl part external diameter (being nut main aspects 41) is 80mm, is greater than the internal diameter of air valve rocking arm 5 mounting hole, finally plays limiting displacement.
Use schematic diagram of the assembly tool referring to fig. 2 and 3, the specific operation uses the following steps:
step 1: coating corresponding thread glue on one end of the stud 2 matched with the small shaft of the guide block body 1, screwing in the stud 2 to ensure that the height of the stud which is finally leaked outside is 20mm, firstly installing the stud and the guide block, and then placing a rocker arm bush to be installed on the stud and the guide block
Step 2: the rocker arm bushing is placed on the guide block body 1, the rocker arm bushing is inserted into the small shaft portion, the threaded hole in the center of the knurled nut is aligned to the stud 2, the knurled nut 4 is screwed up after the direction of the rocker arm bushing is adjusted, and the rocker arm bushing can be clamped by a clamping tool.
And 3, step 3: and placing the combination of the guide block 1, the stud 2, the knurled nut 4 and the rocker arm bushing above the air valve rocker arm, and confirming that the plane of the bushing is correctly attached.
And 4, step 4: the distance tube 3 is placed below the air valve rocker arm, the combination of the tool and the rocker arm bushing is knocked one by one, and when the lower plane of the guide block 4 is contacted with the air valve rocker arm, the rocker arm bushing is installed in place.
In conclusion, the assembling tool disclosed by the utility model is small in size, light in weight, simple in structure and convenient to operate, improves the working efficiency and lightens the working strength. Meanwhile, the guide block body and the knurled nut can protect the rocker arm bushing during installation, and deformation of parts is avoided. The assembling tool can meet the requirements of assembling operation of rocker arm bushings of diesel engines of different models.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the utility model.
Claims (7)
1. An assembling tool for a rocker arm bushing of a diesel engine is characterized by comprising
A guide block body in a stepped shaft shape;
a knurled nut in a stepped shaft shape;
a stud connecting the guide block body and the knurled nut in use; and
when in use, the positioning pipe is placed below the guide block body.
2. The assembly tool for a diesel rocker bushing of claim 1 wherein the surfaces of the guide block body and the stub end of the knurled nut are drilled vertically inward with a first mounting hole and a second mounting hole, respectively.
3. The assembly tool for a diesel rocker bushing of claim 2 wherein the stud has two ends that connect the guide block body and the knurled nut through the first and second mounting holes, respectively.
4. The assembly tool for a diesel rocker bushing of claim 1 wherein the axes of the knurled nut, the stud, and the guide block body after installation are coincident.
5. The assembly tool for a diesel rocker bushing of claim 1 wherein axes of the distance tube, the guide block body, the knurled nut, and the stud remain coincident in use.
6. The assembly tool for a diesel rocker bushing of claim 1 wherein the knurled nut is uniform in diameter with a minor axial end of the guide block body.
7. The assembling tool for the rocker arm bushing of the diesel engine as set forth in claim 1, wherein a chamfer is provided at an inner circular opening at both ends of the distance tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123076979.5U CN216967635U (en) | 2021-12-09 | 2021-12-09 | Assembling tool for rocker arm bushing of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123076979.5U CN216967635U (en) | 2021-12-09 | 2021-12-09 | Assembling tool for rocker arm bushing of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216967635U true CN216967635U (en) | 2022-07-15 |
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ID=82346231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123076979.5U Active CN216967635U (en) | 2021-12-09 | 2021-12-09 | Assembling tool for rocker arm bushing of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216967635U (en) |
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2021
- 2021-12-09 CN CN202123076979.5U patent/CN216967635U/en active Active
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