Split type connecting rod bearing bush press-fitting clamp

Abstract

The utility model discloses a split type connecting rod bearing bush press-fitting clamp which is characterized in that the split type connecting rod bearing bush press-fitting clamp comprises a base, a positioning copper rod and a connecting rod sleeve, a copper rod positioning part is arranged on the base, a connecting rod sleeve guide groove is formed above the copper rod positioning part, a bearing bush positioning part is arranged in the middle of the positioning copper rod, and the connecting rod sleeve guide groove is connected with the bearing bush positioning part. A connecting rod large end positioning part is arranged on the base, connecting shafts are arranged at the two ends of the positioning copper rod, the connecting shafts are locked on the base through screws, a connecting rod small end containing groove is formed in the connecting rod sleeve, and the top face of the connecting rod sleeve is a plane. The bearing bush pressing device has the advantages of solving the problem that a bearing bush is difficult to be manually installed on a split type connecting rod, improving the press-fitting qualification rate, improving the press-fitting efficiency and reducing the labor intensity of workers.

Description

Technical Field

[0001] This utility model relates to the field of clamps, specifically to a split connecting rod bearing press-fit clamp. Background Technology

[0002] The crank-connecting rod mechanism is the main motion mechanism of an engine. Its function is to convert the reciprocating motion of the piston into the rotational motion of the crankshaft, and simultaneously convert the force acting on the piston into the torque output by the crankshaft to drive the car wheels. One end of the connecting rod connects to the crankshaft, and the other end connects to the piston. The large end of the connecting rod is rotatably connected to the crank pin, therefore, a bearing bush needs to be installed at the large end connection hole of the connecting rod to increase wear resistance. For split connecting rods, the press-fitting of the bearing bush differs from that of integral connecting rods. It requires pressing from the inside of the bearing bush into the semi-circular groove at the large end of the connecting rod. Current press-fitting methods mainly rely on manual pressing, which has the problems of inaccurate bearing bush installation, time-consuming and labor-intensive processes, and high worker workload. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model provides a split connecting rod bearing press-fit fixture, which has precise positioning, low press-fit difficulty, and high press-fit quality.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A split-type connecting rod bearing press-fit fixture, characterized in that it includes a base, a positioning copper rod, and a connecting rod sleeve, wherein the base has a copper rod positioning part, the upper part of the copper rod positioning part has a connecting rod sleeve guide groove, the middle part of the positioning copper rod has a bearing positioning part, the base has a connecting rod large end positioning part, the two ends of the positioning copper rod have connecting shafts, the connecting shafts are locked to the base by screws, the connecting rod sleeve has a connecting rod small end receiving groove, and the top surface of the connecting rod sleeve is a plane.

[0006] Furthermore, the lower edge of the small end receiving groove of the connecting rod contacts the arc surface of the large end of the connecting rod.

[0007] Furthermore, the lower two ends of the base have horizontally extending mounting portions, and the mounting portions have U-shaped grooves.

[0008] Furthermore, the bottom of the large end positioning part of the connecting rod has a positioning pin clearance groove.

[0009] The beneficial effects of this utility model include: solving the problem of difficulty in manually installing bearing bushes on split connecting rods, improving the press-fit qualification rate, improving press-fit efficiency, and reducing the labor intensity of workers. Attached Figure Description

[0010] Figure 1This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the base structure of this utility model;

[0012] Figure 3 This is a schematic diagram of the copper rod structure of this utility model;

[0013] Figure 4 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0015] One such Figure 1-4 The split-type connecting rod bearing press-fit fixture shown includes a base 1, a positioning copper rod 2, and a connecting rod sleeve 3. The base 1 has a copper rod positioning part 11, and a connecting rod sleeve guide groove 12 above the positioning part 11 to ensure that the connecting rod sleeve 12 does not shift laterally when pressed down. The positioning copper rod 2 has a bearing positioning part 21 in the middle, with steps on both sides to accurately position the bearing end, ensuring accurate pressing of the bearing into the connecting rod. The positioning copper rod 2 has connecting shafts 22 at both ends, which are screwed onto the base 1. The base 1 has a connecting rod large end positioning part 13, with a positioning pin clearance groove 16 at the bottom. This ensures that both the connecting rod and the connecting rod sleeve are perpendicular to the bearing, solving the problem of improper or incomplete bearing installation. The connecting rod sleeve 3 has a connecting rod small end receiving groove 31, and its top surface is flat.

[0016] To avoid damaging the connecting rod during the pressing process, the lower edge of the connecting rod small end receiving groove 31 in this embodiment contacts the arc surface of the connecting rod large end.

[0017] To facilitate the fixing of the base 1, the lower two ends of the base 1 in this embodiment have horizontally extending mounting portions 14, and the mounting portions 14 have U-shaped grooves 15. The base 1 is then locked onto the press placement table by bolts connecting the U-shaped grooves 15.

[0018] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A split-type connecting rod bearing press-fit fixture, characterized in that: The device includes a base (1), a positioning copper rod (2), and a connecting rod sleeve (3). The base (1) has a copper rod positioning part (11), and the copper rod positioning part (11) has a connecting rod sleeve guide groove (12) above it. The positioning copper rod (2) has a bearing positioning part (21) in the middle. The base (1) has a connecting rod large end positioning part (13). The positioning copper rod (2) has connecting shafts (22) at both ends. The connecting shafts (22) are fastened to the base (1) by screws. The connecting rod sleeve (3) has a connecting rod small end receiving groove (31). The top surface of the connecting rod sleeve (3) is a plane.

2. The split-type connecting rod bearing press-fitting fixture according to claim 1, characterized in that: The lower edge of the small end receiving groove (31) of the connecting rod contacts the arc surface of the large end of the connecting rod.

3. The split-type connecting rod bearing press-fitting fixture according to claim 1, characterized in that: The base (1) has horizontally extending mounting portions (14) at both ends of its lower part, and the mounting portions (14) have U-shaped grooves (15).

4. The split-type connecting rod bearing press-fitting fixture according to claim 1, characterized in that: The bottom of the large end positioning part (13) of the connecting rod has a positioning pin relief groove (16).

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