Reciprocating compressor crankshaft heat treatment lifting appliance

Abstract

The utility model provides a heat treatment lifting appliance for a crankshaft of a reciprocating compressor, and aims to solve the problem that a reserved part needs to be reserved in a crankshaft forming stage and is cut off after heat treatment, so that raw materials of the crankshaft are wasted. The main body window frame type hanging frame is characterized by comprising an upper transverse frame, a lower transverse frame, a left vertical frame and a right vertical frame, the left end and the right end of the upper transverse frame are each provided with a lifting lug, and each lifting lug is provided with a transverse pin hole. A C-shaped fence is arranged between the left and right vertical frames; when the uppermost crankshaft throw of the crankshaft is hung on the lower transverse frame of the hanging frame, the crankshaft throw leans against the C-shaped fence to limit the crankshaft and prevent the crankshaft from falling off. The crankshaft has the advantages that a reserved part does not need to be reserved, and crankshaft raw materials are saved.

Description

Technical Field

[0001] The utility model relates to a heat treatment sling for a reciprocating piston compressor crankshaft, specifically a sling for quenching and tempering the crankshaft. Background Art

[0002] At present, the method for quenching and tempering a reciprocating piston compressor crankshaft is to hang the crankshaft in a pit furnace for heat treatment. Specifically, during the forming stage of the crankshaft, i.e., during forging, a reserved part is left at the upper end thereof, and a hole is drilled in the reserved part; there is a hanging plate on the upper part of the pit furnace, and there are hanging holes (also called furnace openings) on the hanging plate; the reserved part of the crankshaft passes through the hanging hole upward from below the hanging plate and extends out, and the drilled hole is exposed above the hanging plate; a cross pin is inserted into the drilled hole in a manner of lying across the hanging hole to hang the crankshaft in the hearth of the pit furnace; after heat treatment, the reserved part and its drilled hole are cut off, and then machining is carried out. It can be seen that such a heat treatment method wastes crankshaft raw materials. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a heat treatment sling for a reciprocating compressor crankshaft.

[0004] The purpose of the utility model is achieved as follows: Its main body is a window frame type hanging frame, including upper and lower horizontal frames and left and right vertical frames; a hanging ear is installed at each of the left and right ends of the upper horizontal frame, and a cross pin hole is provided on each hanging ear; a C-shaped fence is arranged between the left and right vertical frames; when the uppermost crank throw of the crankshaft is hung on the lower horizontal frame of the hanging frame, the crank throw leans against the C-shaped fence to prevent the crankshaft from falling off the hanging frame.

[0005] The using method of the utility model is as follows: First, the two hanging ears are passed through their respective hanging holes upward from below the hanging plate, so that the cross pin holes are exposed above the hanging plate, and then a cross pin is inserted into the cross pin hole in a manner of lying across the hanging hole to hang the window frame type hanging frame in the hearth of the pit furnace; then, the uppermost crank throw of the crankshaft enters the hanging frame opening from the opening of the C-shaped enclosure and is hung on the lower horizontal frame of the hanging frame, so that the crank throw leans against the C-shaped fence.

[0006] Compared with the prior art, the positive effect of the utility model is that during the forming stage of the crankshaft, i.e., during forging, it is not necessary to leave a reserved part, and of course, it is not necessary to cut off the reserved part, thus saving crankshaft raw materials. Brief Description of the Drawings

[0007] The following further illustrates the utility model with reference to the drawings.

[0008] Figure 1 is a schematic diagram of the utility model.

[0009] Figure 2 is Figure 1 the right view of Detailed Embodiment

[0010] Its main body is a window-frame type hanging frame 4, which includes an upper cross-frame 41, a lower cross-frame 43 and left and right vertical frames 42; a lifting lug 3 is installed at each of the left and right ends of the upper cross-frame, and a transverse pin hole is provided on each lifting lug; a C-shaped fence 5 is installed between the left and right vertical frames 42. Installing the C-shaped fence 5 between the left and right vertical frames means that a fence seat 8 in the shape of a binary character is fixed on each vertical frame 42, and each end of the C-shaped fence 5 is inserted into the fence seat on the same side as the sandwich core of the binary character to form a sandwich structure, and then fixed with a mounting pin 6; or each end of the C-shaped fence is welded to the vertical frame on the same side.

[0011] The usage method of the utility model is as follows: first, pass the two lifting lugs upward through their respective hanging holes from below the hanging disc 1, so that the transverse pin holes are exposed from the hanging disc, and then insert the transverse pin 2 into the transverse pin holes in a way that lies across the hanging holes, and hang the hanging frame on the hearth of the shaft furnace; then, enter the crank throw 71 at the top of the crankshaft into the hanging frame opening from the opening of the C-shaped fence and hang it on the lower cross-frame 43 of the hanging frame, so that the crank throw 71 leans against the C-shaped fence.

Claims

1. A reciprocating compressor crankshaft heat treatment hanger, its main body is a window frame type hanging frame, including upper and lower horizontal frames and left and right vertical frames; a lifting lug is installed at each of the left and right ends of the upper horizontal frame, and a horizontal pin hole is provided on each lifting lug; a C-shaped fence is set between the left and right vertical frames; when the uppermost crankshaft bend of the crankshaft is hung on the lower horizontal frame of the hanging frame, the crankshaft bend rests on the C-shaped fence.

2. The reciprocating compressor crankshaft heat treatment hanger according to claim 1, characterized in that: Setting a C-shaped fence between the left and right vertical frames means that a fence seat in the shape of a letter "U" is fixed to each vertical frame, and each end of the C-shaped fence is inserted into the fence seat on the same side as a sandwich structure as a sandwich core of the letter "U" and then fixed with a mounting pin.

Images