Crankshaft assembly dismounting clamp

Abstract

The utility model discloses a crankshaft assembly dismounting clamp which is characterized in that the crankshaft assembly dismounting clamp comprises a base bottom plate, a plurality of base supporting columns, a base cushion plate, a positioning plate and a pressing plate, the base supporting columns are arranged between the base bottom plate and the base cushion plate, the positioning plate is arranged on the base cushion plate, and the pressing plate is arranged on the base bottom plate. The pressing plate is arranged on the positioning plate, the upper portion of the positioning plate is provided with a first U-shaped groove for containing the large end of a connecting rod, the lower portion of the positioning plate is provided with a second U-shaped groove for containing the fan-shaped face of a crank, and the symmetry axis of the first U-shaped groove and the symmetry axis of the second U-shaped groove are located on the same vertical plane. The face, opposite to the positioning plate, of the pressing plate is provided with a groove, and the center of the positioning plate is provided with a protruding supporting table. The three-piece crank pin has the advantages that the structure is simple, the large fan-shaped face of the crank and the center of the crank serve as supporting points, the end face of the crank is pressed through the pressing plate, the three-piece crank pin can be detached through the pressing head, the supporting stability is good, and a crank assembly is convenient to install.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fixture, concretely relates to a crankshaft assembly dismounting fixture. BACKGROUND

[0002] Crank-train is the main movement mechanism of engine. Its function is to change the reciprocating motion of piston into the rotary motion of crankshaft, and to change the force acting on piston into the torque outputted by crankshaft to drive the rotation of automobile wheel. The one end of connecting rod is connected with crankshaft and the other end is connected with piston, and the big end of connecting rod is rotatably connected with crank pin. When the crank or connecting rod needs to be repaired and replaced, the connecting rod needs to be removed and the crank pin needs to be taken out. The existing dismounting fixture cannot dismount or is difficult to dismount due to the lack of supporting point on both sides of crank. SUMMARY

[0003] In view of the above deficiencies in the prior art, the utility model provides a crankshaft assembly dismounting fixture, which has good supporting effect and can conveniently eject the crank pin from the crank.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A crankshaft assembly dismounting fixture, characterized in that: comprising base bottom plate, base support column, base backing plate, positioning plate, pressing plate, the number of the base support column is multiple, the base support column is arranged between the base bottom plate and the base backing plate, the positioning plate is arranged on the base backing plate, the pressing plate is arranged on the positioning plate, the upper part of the positioning plate is provided with a first U-shaped groove accommodating the big end of connecting rod, the lower part of the positioning plate is provided with a second U-shaped groove accommodating the crank sector surface, the symmetry axis of the first U-shaped groove and the symmetry axis of the second U-shaped groove are located in the same vertical plane, the opposite surface of the pressing plate and the positioning plate is provided with a groove, and the center of the positioning plate is provided with a convex support platform.

[0006] Further, the two ends of the pressing plate are provided with U-shaped mounting grooves, and the positioning plate is provided with locking bolts corresponding to the U-shaped mounting grooves.

[0007] The utility model has the advantages of simple structure, which uses the crank big sector surface and the crank center as supporting points, and then uses the pressing plate to press the crank end surface, so that the three-piece crank pin can be disassembled by using the pressing head, and the supporting stability is good and the crank assembly is convenient to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0008] Fig. 1 It is the structure schematic diagram of the utility model;

[0009] Fig. 2 It is the top view of the utility model. DETAILED DESCRIPTION

[0010] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0011] One such Figs. 1-2 The crankshaft assembly disassembly fixture shown includes a base plate 6, base support columns 5, base pads 4, positioning plates 3, and pressure plates 2. Multiple base support columns 5 are positioned between the base plate 6 and the base pads 4, creating a height gap between them. The positioning plate 3 is mounted on the base pads 4. The upper part of the positioning plate 3 has a first U-shaped groove 31 to accommodate the large end of the connecting rod of the crankshaft assembly 1, and the lower part has a second U-shaped groove 32 to accommodate the crankshaft's fan-shaped surface. The axes of symmetry of the first U-shaped groove 31 and the second U-shaped groove 32 are located in the same vertical plane. The crankshaft assembly 1 is inserted from the open end of the U-shape during clamping. The pressure plate 2 is mounted on the positioning plate 3. The surface of the pressure plate 2 opposite to the positioning plate 3 has a groove. The large fan-shaped surface of the crankshaft extends into the groove, and the pressure plate 2 then presses the large fan-shaped surface firmly. The center of the positioning plate 3 has a raised support platform 33, which is directly opposite the center of the crankshaft assembly.

[0012] To facilitate the installation and removal of the crankshaft assembly 1, the pressure plate 2 in this embodiment has U-shaped mounting grooves 21 at both ends, and the positioning plate 3 is provided with locking bolts 7 corresponding to the U-shaped mounting grooves 21. By adjusting the locking bolts 7, the pressure plate 2 can be installed and the large sector surface of the crankshaft can be pressed.

[0013] 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 crankshaft assembly disassembly fixture, characterized by: It includes base bottom plate (6), base support column (5), base backing plate (4), positioning plate (3), pressing plate (2), the number of the base support column (5) is multiple, the base support column (5) is set between the base bottom plate (6) and base backing plate (4), the positioning plate (3) is set on the base backing plate (4), the pressing plate (2) is set on the positioning plate (3), the positioning plate (3) upper portion has the first U-shaped groove (31) of accommodating connecting rod big end, the lower portion of the positioning plate (3) has the second U-shaped groove (32) of accommodating crank sector face, the symmetry axis of the first U-shaped groove (31) and the symmetry axis of the second U-shaped groove (32) are located in the same vertical plane, the opposite face of the pressing plate (2) and the positioning plate (3) has recess, the center of the positioning plate (3) has the raised support platform (33).

2. A crankshaft assembly puller clamp as defined in claim 1 wherein: The both ends of the pressing plate (2) have U-shaped mounting groove (21), the positioning plate (3) is provided with locking bolt (7) corresponding to the U-shaped mounting groove (21).

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