Connecting rod testing fixture

Abstract

The utility model relates to a connecting rod testing fixture, which comprises a base, a large head detection sleeve is arranged on the base, the vertical section of an inner hole of the large head detection sleeve is circular, a connecting rod small end fixing part is further arranged at the top of the base, the connecting rod small end fixing part is in sliding connection with the base, and the connecting rod small end fixing part comprises a connecting rod positioning column. The connecting rod positioning column is located above the base, and the position height of the central point of one end of the connecting rod positioning column is equal to the position height of the central point of the inner hole of the large-head detection sleeve. The utility model relates to the technical field of connecting rod detection equipment. The device has the effects of detecting whether the large-head end of the connecting rod can smoothly enter the large-head detection sleeve, and avoiding the problem that the finished connecting rod interferes with a cylinder sleeve and affects assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting rod detection equipment, in particular to a connecting rod detection tool. Background Art

[0002] The connecting rod is an important component in the automobile internal combustion engine.

[0003] During the installation of the connecting rod, first connect the small end of the connecting rod to the piston, and then pass the large end of the connecting rod through the cylinder sleeve.

[0004] During installation, there is a very small chance that the big end of the connecting rod will not be able to pass through the cylinder liner.

[0005] In order to avoid similar situations during the installation process, the connecting rod needs to be tested in advance during the connecting rod manufacturing process, but there is no such testing device at present. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model aims to provide a connecting rod inspection fixture, which has the effect of detecting whether the big end of the connecting rod can smoothly enter the big end inspection sleeve, thereby preventing the connecting rod from having assembly problems after leaving the factory.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] A connecting rod inspection tool, comprising a base, a large head detection sleeve is arranged on the base, the vertical section of the inner hole of the large head detection sleeve is circular, a connecting rod small end fixing part is also arranged on the top of the base, the connecting rod small end fixing part is slidably connected with the base, the connecting rod small end fixing part comprises a connecting rod positioning column, the connecting rod positioning column is located above the base, and the center height of the connecting rod positioning column is equal to the center height of the inner hole of the large head detection sleeve;

[0009] The connecting rod small end fixing portion is arranged directly opposite to the large end detection sleeve;

[0010] The connecting rod small end hole sleeve is placed on the connecting rod positioning column.

[0011] In a preferred example, the utility model can be further configured as follows: the connecting rod small end fixing portion further includes a slide plate, the slide plate is arranged on the top of the base, a positioning plate is arranged on the top of the slide plate, and the connecting rod positioning column is arranged on one side of the positioning plate;

[0012] The connecting rod positioning column and the positioning plate are connected and fixed by bolts.

[0013] In a preferred example, the utility model can be further configured as follows: a first guide groove is provided on the top of the base, a guide block is fixedly provided at the first guide groove, one end of the guide block is flush with one end of the base, and the upper half of the guide block is located on the outer side of the base;

[0014] A guide groove is provided at the bottom of the slide plate, the guide block is partially located in the guide groove, and the guide block is slidably connected to the slide plate.

[0015] In a preferred example, the utility model can be further configured as follows: the middle part of one side of the positioning plate close to the large head detection cover extends to form a support plate.

[0016] In a preferred example, the present invention can be further configured as follows: two sides of the backing plate are flush with two sides of the positioning plate.

[0017] In summary, the utility model includes at least one of the following beneficial technical effects:

[0018] 1. A big head detection sleeve and a connecting rod small end fixing part slidably connected to the base are provided on the base. After the connecting rod position on the inspection fixture is initially limited by the connecting rod small end fixing part, the connecting rod is moved by moving the connecting rod small end fixing part to detect whether the big head of the connecting rod can smoothly enter the big head detection sleeve, thereby preventing the connecting rod from having assembly problems after leaving the factory.

[0019] 2. By providing a support plate on one side of the positioning plate, the support plate is partially fitted with one side of the connecting rod, so as to avoid the connecting rod from tilting when placed, and further ensure the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of this embodiment (connecting rod has been placed);

[0021] Figure 2 yes Figure 1 Schematic diagram of the left view structure.

[0022] In the figure, 1, base; 11, big head detection sleeve; 12, connecting rod positioning column; 2, slide plate; 21, positioning plate; 3, first placement groove; 31, guide block; 4, support plate. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] Example:

[0025] Reference Figure 1-Figure 2As shown, the utility model discloses a connecting rod inspection tool, comprising a base 1. A large head inspection sleeve 11 is arranged on the base 1. The vertical cross section of the inner hole of the large head inspection sleeve 11 is circular. The inner hole size of the large head inspection sleeve 11 is the same as the inner diameter size of the corresponding cylinder sleeve.

[0026] A connecting rod small end fixing portion is also provided on the top of the base 1. The connecting rod small end fixing portion includes a slide plate 2. A first guide groove 3 is provided on the top of the base 1, and the end of the first guide groove 3 away from the large head detection cover 11 passes through the base 1. A guide block 31 is fixedly provided at the first placement groove 3, one end of the guide block 31 is flush with one end of the base 1, and the upper half of the guide block 31 is located on the outside of the base 1.

[0027] A guide groove is provided at the bottom of the slide plate 2, and the guide block 31 is partially located in the guide groove, and the guide block 31 is slidably connected to the slide plate 2. The guide block 31 is arranged along the straight line direction where the central axis of the inner hole of the large head detection sleeve 11 is located. The guide block 31 limits the movement direction of the slide plate 2.

[0028] A positioning plate 21 is provided on the top of the slide plate 2. A connecting rod positioning column 12 is provided on one side of the positioning plate 21. The connecting rod positioning column 12 is fixed to the positioning plate 21 by bolt connection.

[0029] In this embodiment, in order to facilitate the inspection of semi-finished and finished connecting rods of the same model, the number of connecting rod positioning columns 12 in the same inspection fixture is two. The two connecting rod positioning columns 12 have different sizes, one is used for connecting rod inspection without bushings. The other is used when a bushing has been added to the small end of the connecting rod. The connecting rod positioning column 12 is located above the base 1, and the center height of one end of the connecting rod positioning column 12 is equal to the center height of the inner hole of the large end detection sleeve 11.

[0030] The middle part of one side of the positioning plate 21 close to the large head detection cover 11 extends to form a support plate 4. The two sides of the support plate 4 are flush with the two sides of the positioning plate 21. The support plate 4 is only fitted with the middle connecting section of the connecting rod.

[0031] When the connecting rod is installed on the inspection fixture, one side of the connecting rod fits with one side of the positioning plate 21 and one side of the support plate 4. At this time, the plane where the center surface of the connecting rod is located is coplanar with the plane where the center surface of the large head detection sleeve 11 is located.

[0032] The implementation principle of the above embodiment is:

[0033] The operator places the connecting rod small head hole sleeve to be inspected on the connecting rod positioning column 12, with one side close to the inspection fixture vertical plate 21, and then slowly moves the slide plate 2 along the direction of the guide block. The slide plate 2 moves along the direction of the guide block 31 itself, and the slide plate 2 drives the positioning plate 21 to move, the positioning plate 21 drives the connecting rod positioning column 12 to move, and the connecting rod positioning column 12 drives the connecting rod to move.

[0034] When the connecting rod moves, the operator slightly lifts one end of the connecting rod close to the big head detection sleeve 11.

[0035] The slide plate 2 moves slowly. If the big end of the connecting rod can enter the big end detection sleeve 11, it proves that the connecting rod meets the requirements.

[0036] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A connecting rod inspection fixture, characterized in that: The invention comprises a base (1), wherein a large-head detection sleeve (11) is arranged on the base (1), wherein the vertical cross-section of the inner hole of the large-head detection sleeve (11) is circular, and a connecting rod small end fixing portion is also arranged on the top of the base (1), wherein the connecting rod small end fixing portion is slidably connected to the base (1), and the connecting rod small end fixing portion comprises a connecting rod positioning column (12), wherein the connecting rod positioning column (12) is located above the base (1), and the center height of the connecting rod positioning column (12) is equal to the center height of the inner hole of the large-head detection sleeve (11); The connecting rod small end fixing portion is arranged directly opposite to the large end detection sleeve (11); The connecting rod small end hole sleeve is placed on the connecting rod positioning column (12).

2. A connecting rod inspection tool according to claim 1, characterized in that: The connecting rod small end fixing portion further comprises a slide plate (2), the slide plate (2) being arranged on the top of the base (1), a positioning plate (21) being arranged on the top of the slide plate (2), and the connecting rod positioning column (12) being arranged on one side of the positioning plate (21); The connecting rod positioning column (12) and the positioning plate (21) are connected and fixed by bolts.

3. A connecting rod inspection tool according to claim 2, characterized in that: A first guide groove (3) is provided on the top of the base (1), a guide block (31) is fixedly arranged at the first guide groove (3), one end of the guide block (31) is flush with one end of the base (1), and the upper half of the guide block (31) is located outside the base (1); A guide groove is provided at the bottom of the slide plate (2), and a portion of the guide block (31) is located in the guide groove. The guide block (31) is slidably connected to the slide plate (2).

4. A connecting rod inspection tool according to claim 3, characterized in that: The middle part of one side of the positioning plate (21) close to the large head detection sleeve (11) extends to form a support plate (4).

5. A connecting rod inspection tool according to claim 4, characterized in that: The two sides of the support plate (4) are flush with the two sides of the positioning plate (21).

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