Piston rod super nut warm-up preassembling device

Abstract

The utility model relates to the technical field of reciprocating piston compressor assembly, in particular to a warm-up preassembling device for a piston rod super nut, which can be separated from a product to carry out warm-up preassembling on the piston rod super nut in advance, not only reduces the difficulty of assembly operation, but also shortens the assembly time of the whole machine, and comprises a base, a tool piston rod is fixed on the base, a tool piston rod sleeve is sleeved on the tool piston rod, and a super nut is installed on the tool piston rod for warm-up preassembling operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to reciprocating piston compressor assembly technical field, concretely is a kind of piston rod super nut warm-up preloading device. BACKGROUND

[0002] In the reciprocating piston compressor assembly process, super nut is a kind of piston nut that connects and fixes piston body or piston flange and piston rod, and it is an important part in piston component. In order to better exert the fastening performance of super nut, it is required to carry out several warm-up preloading operations before final installation, that is, several times of tightening and dismounting are required before formal installation of super nut, so that super nut is fully stretched and better performance is exerted. However, according to the normal assembly process of compressor, super nut installation operation of connecting piston flange and piston rod can be carried out only when piston rod is assembled into cylinder and connected with cross head component, and at this time, several times of super nut dismounting operation can be carried out only through narrow middle body window frame in the interior of compressor, which is very inconvenient to operate and low in efficiency. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a kind of piston rod super nut warm-up preloading device, it can be disconnected product and carry out warm-up preloading for piston rod super nut in advance, which not only reduces the difficulty of assembly operation, but also shortens the time of whole machine assembly.

[0004] The technical scheme is as follows: a kind of piston rod super nut warm-up preloading device, characterized in that it comprises a base, a tooling piston rod is fixed on the base, a tooling piston rod sleeve is sleeved on the tooling piston rod, and a super nut is installed on the tooling piston rod for warm-up preloading operation.

[0005] Further characterized in that a fixing frame is installed on the base, the fixing frame comprises a lower pressing block, two adjusting screws, an upper pressing block, a fixed nut screwed on the adjusting screw, the fixed nut is used to press the upper pressing block, and one end of the tooling piston rod is pressed and fixed by the upper pressing block and the lower pressing block.

[0006] One end of the tooling piston rod is provided with an upper pressing surface and a lower pressing surface.

[0007] The tooling piston rod comprises a large-diameter section and a small-diameter section forming a step surface, and the tooling piston rod sleeve is sleeved on the small-diameter section and abuts against the step surface.

[0008] After the tooling piston rod is fixed, the tooling piston rod sleeve is first installed, and the super nut is then installed to perform the warm-up pre-installation operation, the super nut of the piston rod can be pre-installed for warm-up in advance, the difficulty of assembly operation is reduced, and the time of whole machine assembly is shortened, further, the adjusting screw rod of the upper pressing block can be adjusted up and down to change the distance between the upper pressing block and the lower pressing block, so that the fixing of tooling piston rods of different sizes is adapted, the warm-up pre-installation of super nuts of various models is met, and the device is simple, convenient and high in universality. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structural schematic view of the utility model;

[0010] Figure 2 It is a top view of the lower pressing block;

[0011] Figure 3 It is a top view of the upper pressing block;

[0012] Figure 4 It is a front view of the tooling piston rod;

[0013] Figure 5 It is Figure 4 It is a left view. PREFERRED EMBODIMENT

[0014] As shown in Figures 1 to 5 A piston rod super nut warm-up pre-installation device, which comprises a base 1, a tooling piston rod 2 is fixed on the base 1, a tooling piston rod sleeve 3 is sleeved on the tooling piston rod 2, and a super nut 4 is installed on the tooling piston rod 2 to perform a warm-up pre-installation operation.

[0015] A fixing frame 5 is installed on the base 1, the fixing frame 5 comprises a lower pressing block 6, two adjusting screw rods 7, an upper pressing block 8, and a fixed nut 9 which is screw-connected to the adjusting screw rod 7 and is used for pressing the upper pressing block 8, one end of the tooling piston rod 2 is tightly fixed by the upper pressing block 8 and the lower pressing block 6, the height of the upper pressing block 8 can be adjusted as required, so that the distance between the upper pressing block 8 and the lower pressing block 6 is adjusted, the fixing of tooling piston rods of different sizes is met, in order to better press tightly, one end of the tooling piston rod 2 is provided with an upper pressing plane 2-1 and a lower pressing plane 2-2 which are matched with the upper pressing block 8 and the lower pressing block 6 respectively.

[0016] The tooling piston rod 2 comprises a large-diameter section and a small-diameter section to form a stepped surface, and the tooling piston rod sleeve 3 is sleeved on the small-diameter section and abuts against the stepped surface.

[0017] The use process is as follows:

[0018] 1, place the base 1 on the ordinary workbench, install the lower pressing block 6 and the adjusting screw rod 7, the lower part of the adjusting screw rod 7 is fixed on the base 1, and the lower pressing block 6 is sleeved on the adjusting screw rod 7 and is moved to contact the base 1;

[0019] 2. The tool piston rod sleeve 3 is mounted on the tool piston rod 2;

[0020] 3. The upper pressing block 8 is mounted on the screw 7, the end of the tool piston rod 2 is mounted between the upper pressing block 8 and the lower pressing block 6, and the fixing nut 9 is tightened to complete the fixing of the tool piston rod 2;

[0021] 4. The super nut 4 is installed, and multiple warm-up preloading operations are performed.

Claims

1. A piston rod super nut warm-up preloading device, characterized in that, It includes base, the base is fixed with tooling piston rod, the tooling piston rod is equipped with tooling piston rod cover, super nut is installed on the tooling piston rod and carries out warm-up preloading operation;The base is installed fixed frame, the fixed frame includes lower pressing block, two adjusting screws, upper pressing block, fixed nut is screwed on the adjusting screw, the fixed nut is used to press the upper pressing block, one end of the tooling piston rod is pressed and fixed by the upper pressing block and the lower pressing block.

2. A piston rod super-nut warming pre-loading device according to claim 1, characterized in that One end of the tooling piston rod is provided with upper pressing plane and lower pressing plane.

3. A piston rod super-nut warming pre-loading device according to claim 1, characterized in that, The tooling piston rod includes large diameter section and small diameter section to form step surface, the tooling piston rod cover is equipped with the small diameter section and abuts against the step surface.

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