Engine crankshaft bearing bush mounting tool

Abstract

The utility model discloses an engine crankshaft bearing bush mounting tool, which belongs to the technical field of workshop tools, is used for improving the assembly precision of a crankshaft bearing bush, and adopts the technical scheme that the tool comprises a positioning pin, a positioning plate and a force transmission column, and the lower end of the positioning pin penetrates through an oil hole in the middle of the bearing bush and then is inserted into an oil duct on a bearing bush seat of an engine body; one end of the positioning plate is fixedly connected with the upper end of the positioning pin, and the other end of the positioning plate is placed on the upper end surfaces of the bearing bush and the bearing bush seat and is fixedly connected with the lower end of the force transmission column. Precise positioning of the oil holes is achieved through the positioning pins inserted into the bearing bush oil holes and the bearing bush seat oil channels, meanwhile, the upper end face of the bearing bush is flush with the upper end face of the bearing bush seat on a machine body through pressure applied by the force transmission column and the positioning plate, the structure is simple, operation is convenient, and compared with a traditional assembling method, work efficiency is high, and cost is low. And the assembling precision of the crankshaft bearing bush is greatly improved.

Description

Technical Field

[0001] The utility model relates to an auxiliary tool for installing an engine crankshaft bearing bush, belonging to the technical field of workshop tools. Background Art

[0002] Installing crankshaft bearings is a crucial step in engine overhaul assembly. Existing installation methods typically require the assembler to visually align the crankshaft bearing oil hole with the engine oil passage, then verify flushness between the bearing and the upper end surface of the bearing seat by feel, and, if necessary, tap the bearing with a hammer. This installation method not only results in low positioning accuracy, but also creates a high impact force, which can easily damage the bearing. Therefore, a tool to assist with oil hole positioning and end surface alignment is essential. Utility Model Content

[0003] The purpose of the utility model is to provide an engine crankshaft bearing installation tool to address the shortcomings of the existing technology, so as to achieve accurate positioning of the crankshaft bearing oil hole and alignment of the end face, thereby improving the assembly accuracy of the crankshaft bearing.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A tool for installing an engine crankshaft bearing comprises a locating pin, a locating plate and a force transmission column. The lower end of the locating pin passes through the oil hole in the middle of the bearing and is inserted into the oil channel on the bearing seat of the engine body. The locating plate is perpendicular to the locating pin and the force transmission column. One end of the locating plate is fixedly connected to the upper end of the locating pin, and the other end is placed on the upper end surface of the bearing and the bearing seat and is fixedly connected to the lower end of the force transmission column.

[0006] In the above-mentioned engine crankshaft bearing installation tool, a sleeve is installed on the upper end of the force transmission column.

[0007] In the above-mentioned engine crankshaft bearing installation tool, the upper end of the positioning pin is a stud, and the stud passes through the through hole on the positioning plate and is fixedly connected to the positioning plate through two nuts.

[0008] The above engine crankshaft bearing installation tool, the sleeve and the positioning plate are both made of nylon material.

[0009] In the above engine crankshaft bearing installation tool, the lower surface of the positioning plate is provided with a step corresponding to the end of the bearing.

[0010] The utility model utilizes a locating pin inserted into the oil hole of the bearing and the oil passage of the bearing seat to achieve precise positioning of the oil hole, and simultaneously utilizes the pressure applied by the force transmission column and the locating plate to make the upper end surface of the bearing flush with the upper end surface of the bearing seat on the machine body. The utility model has a simple structure and is easy to operate. Compared with the traditional assembly method, it not only has high work efficiency, but also greatly improves the assembly accuracy of the crankshaft bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the use of the present utility model.

[0014] The numbers in the figure are as follows: 1. sleeve, 2. force transmission column, 3. positioning plate, 4. positioning pin, 5. bearing seat, 6. bearing. DETAILED DESCRIPTION

[0015] The utility model aims to solve the problems existing in the prior art and provides an engine crankshaft bearing bush installation tool. The tool can quickly and accurately position the crankshaft bearing bush and align the end faces, thereby realizing efficient and precise installation of the bearing bush.

[0016] See Figure 1 and Figure 2 The utility model mainly includes a positioning pin 4, a positioning plate 3, a force transmission column 2, and a sleeve 1. The lower end of the positioning pin 4 passes through the oil hole in the middle of the bearing shell 6 and is inserted into the oil channel on the bearing shell seat 5 of the machine body to achieve precise positioning of the oil hole; one end of the positioning plate 3 is fixedly connected to the upper end of the positioning pin 4 by two nuts, and the other end is placed on the upper end surface of the bearing shell and the bearing shell seat and connected to the lower end of the force transmission column 2. The force transmission column 2 applies downward pressure to the positioning plate 3 to make the upper end surface of the bearing shell flush with the upper end surface of the bearing shell seat on the machine body. The sleeve 1 is fixed to the upper end of the force transmission column 2 and is used to apply downward pressure to the force transmission column 2. Increasing the length of the force transmission column 2 can extend the length of the tool, allowing the installer to operate the tool more stably from a certain distance, thereby improving the tool's applicability; the sleeve 1 and the positioning plate 3 are both made of nylon material, which can effectively transmit force and have a certain buffering effect, thereby preventing damage to the bearing shell and avoiding personal injury during installation.

[0017] The upper end of the locating pin 4 is a stud, which passes through the through hole on the locating plate 3 and is fixedly connected to the locating plate 3 through two nuts. The two nuts can change the length of the locating pin 4 extending below the locating plate 3, making this tool suitable for various models of engines.

[0018] The lower surface of the positioning plate 3 is provided with a step corresponding to the end of the bearing bush 6.

[0019] When in use, select a force transmission column 2 of appropriate length to assemble the bearing installation tool, place the bearing 6 at the bottom of the bearing seat 5, and position the bearing oil hole and the bearing seat oil channel through the locating pin 4. Place one end of the locating plate 3 on the upper end surface of the bearing and the bearing seat, knock the sleeve 1 to make the bearing flush with the upper part of the bearing seat, rotate the locating plate 3 to press the locating plate 3 on the other side of the bearing and the upper part of the bearing seat, and knock the sleeve 1 to make the bearing flush with the upper part of the bearing seat.

[0020] By adopting the above technical solution, the utility model achieves the following beneficial effects: the engine crankshaft bearing installation tool can overcome the shortcomings of inaccurate positioning and uneven bearing end faces during bearing installation, thus avoiding rework. The tool is compact, easy to carry and operate, safe to use, and highly adaptable, thereby improving work efficiency and reducing the skill requirements of the installer.

Claims

1. An engine crankshaft bearing installation tool, characterized in that: It comprises a locating pin (4), a locating plate (3) and a force transmission column (2), wherein the lower end of the locating pin (4) passes through the oil hole in the middle of the bearing bush (6) and is inserted into the oil channel on the bearing bush seat (5) of the machine body; the locating plate (3) is perpendicular to the locating pin (4) and the force transmission column (2), one end of the locating plate (3) is fixedly connected to the upper end of the locating pin (4), and the other end is placed on the upper end surface of the bearing bush and the bearing bush seat and is fixedly connected to the lower end of the force transmission column (2).

2. The engine crankshaft bearing installation tool according to claim 1, characterized in that: A sheath (1) is installed on the upper end of the force transmission column (2).

3. The engine crankshaft bearing installation tool according to claim 2, characterized in that: The upper end of the positioning pin (4) is a stud, and the stud passes through the through hole on the positioning plate (3) and is fixedly connected to the positioning plate (3) through two nuts.

4. The engine crankshaft bearing installation tool according to claim 3, characterized in that: The sheath (1) and the positioning plate (3) are both made of nylon material.

5. The engine crankshaft bearing installation tool according to claim 4, characterized in that: The lower surface of the positioning plate (3) is provided with a step corresponding to the end of the bearing bush (6).

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