Eccentric crankshaft carburizing treatment charging device

Abstract

The utility model discloses an eccentric crankshaft carburizing treatment charging device which comprises a plate-shaped lower supporting disc and a plate-shaped upper positioning plate, stand columns are arranged between the four corners of the lower supporting disc and the four corners of the upper positioning plate, the lower supporting disc is provided with a plurality of protruding tips and a plurality of lower hollowed-out containing holes, the upper positioning plate is provided with a plurality of upper hollowed-out containing holes, and the lower supporting disc is provided with a plurality of lower hollow-out containing holes. An eccentric crankshaft is arranged between the lower hollowed-out placing hole and the upper hollowed-out placing hole, and a core rod is arranged in the center of the eccentric crankshaft. According to the carburizing treatment tool for the eccentric crankshaft, through the customized tip and the square hole in the lower positioning plate and the customized square hole in the upper positioning plate, the weight and the cost of the tool are reduced through the lightweight design, and the space is utilized to the maximum extent so that the tool can contain more eccentric crankshafts; the customized core rod is placed in the deep hole of the eccentric crankshaft, so that deep hole deformation of a carburized product can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to a heat treatment fixture, or more precisely, an eccentric crankshaft carburizing treatment furnace charging device. Background Technology

[0002] To ensure sufficient wear resistance, existing eccentric crankshaft products require carburizing treatment. As the production volume of eccentric crankshafts increases, the number of pusher furnaces for carburizing treatment has become insufficient to meet the needs of such a large number of eccentric crankshafts, thus affecting the production efficiency and delivery time of the products. Utility Model Content

[0003] Therefore, it is necessary to provide a furnace charging device for carburizing treatment of eccentric crankshafts to address the aforementioned technical problems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A furnace charging device for carburizing treatment of an eccentric crankshaft is characterized in that the device comprises a plate-shaped lower support plate and a plate-shaped upper positioning plate, wherein columns are provided between the four corners of the lower support plate and the upper positioning plate, and circular washers and fixing nuts are provided on the columns.

[0006] The lower support plate is provided with several protruding points and several lower hollow placement holes, and the upper positioning plate is provided with several upper hollow placement holes.

[0007] An eccentric crankshaft is provided between the lower and upper hollow placement holes, and a core rod is provided at the center of the eccentric crankshaft.

[0008] In a preferred embodiment of this utility model, both the upper and lower hollow placement holes are square.

[0009] In a preferred embodiment of this utility model, the tip is wedge-shaped.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This utility model provides a furnace loading device for carburizing eccentric crankshafts. The carburizing fixture for eccentric crankshafts features a customized center and square hole on the lower positioning plate, as well as a customized square hole on the upper positioning plate. This design reduces the weight and cost of the fixture while maximizing space utilization to accommodate more eccentric crankshafts. Furthermore, placing a customized mandrel inside the deep hole of the eccentric crankshaft after placement significantly reduces deep hole deformation in the carburized product. The detachable column design allows for adjustment of the height of the upper positioning plate, enabling multiple types of eccentric crankshafts to be used together, thereby improving product quality and production efficiency. Attached Figure Description

[0012] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the eccentric crankshaft carburizing treatment furnace loading device of this utility model.

[0014] Figure 2 for Figure 1 A three-dimensional exploded view of the eccentric crankshaft carburizing treatment charging device in the furnace.

[0015] Figure 3 for Figure 1 A partial cross-sectional schematic diagram of the eccentric crankshaft carburizing treatment charging device in the furnace;

[0016] Figure 4 This is a schematic diagram of the eccentric crankshaft carburizing treatment furnace loading device of this utility model.

[0017] The markings in the diagram are explained as follows: 1. Lower support plate; 2. Column; 3. Upper positioning plate; 31. Upper hollow placement hole; 4. Circular washer; 5. Fixing nut; 6. Eccentric crankshaft; 7. Mandrel; 8. Center; 81. Lower hollow placement hole. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0019] The eccentric crankshaft carburizing treatment furnace charging device S includes a plate-shaped lower support plate 1 and a plate-shaped upper positioning plate 3. Columns 2 are provided between the four corners of the lower support plate 1 and the upper positioning plate 3. Circular gaskets 4 and fixing nuts 5 are provided on the columns 2.

[0020] The lower support plate 1 is provided with several protruding tips 8 and several lower hollow placement holes 81, and the upper positioning plate 3 is provided with several upper hollow placement holes 31.

[0021] An eccentric crankshaft 6 is provided between the lower hollow placement hole 81 and the upper hollow placement hole 31. A mandrel 7 is provided at the center of the eccentric crankshaft 6 to reduce the deformation of the deep hole during the carburizing process.

[0022] Both the upper hollow placement hole 31 and the lower hollow placement hole 81 are square. The tip 8 is wedge-shaped.

[0023] The working method of the eccentric crankshaft carburizing treatment furnace charging device is described below.

[0024] like Figure 4 As shown, the four columns 2 are connected to the lower support plate 1 and the upper positioning plate 3 by threads. Then, the lower end hole of the eccentric crankshaft 6 is placed on the tip 8 on the lower support plate 1, and the upper end of the eccentric crankshaft 6 passes through the upper hollow placement hole 31 on the upper positioning plate 3. After placement, the mandrel 7 is inserted into the deep oil hole of the eccentric crankshaft.

[0025] This eccentric crankshaft carburizing fixture features a custom-designed center and square hole on the lower positioning plate, as well as a custom-designed square hole on the upper positioning plate. This lightweight design reduces the weight and cost of the fixture while maximizing space utilization to accommodate more eccentric crankshafts. Furthermore, placing a custom mandrel within the deep hole of the eccentric crankshaft after insertion significantly reduces deep hole deformation during carburizing. The detachable column design allows for adjustment of the upper positioning plate's height, enabling the fixture to be used for various eccentric crankshaft products, thereby improving product quality and production efficiency.

[0026] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application.

Claims

1. A furnace charging device for carburizing treatment of an eccentric crankshaft, characterized in that, The eccentric crankshaft carburizing treatment furnace charging device (S) includes a plate-shaped lower support plate (1) and a plate-shaped upper positioning plate (3). A column (2) is provided between the four corners of the lower support plate (1) and the upper positioning plate (3). A circular gasket (4) and a fixing nut (5) are provided on the column (2). The lower support plate (1) is provided with several protruding tops (8) and several lower hollow placement holes (81), and the upper positioning plate (3) is provided with several upper hollow placement holes (31). An eccentric crankshaft (6) is provided between the lower hollow placement hole (81) and the upper hollow placement hole (31), and a core rod (7) is provided at the center of the eccentric crankshaft (6).

2. The eccentric crankshaft carburizing treatment furnace charging device according to claim 1, characterized in that, Both the upper hollow placement hole (31) and the lower hollow placement hole (81) are square.

3. The eccentric crankshaft carburizing treatment furnace charging device according to claim 1, characterized in that, The tip (8) is wedge-shaped.

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