CN2656695Y - Hydraulic nut - Google Patents

Abstract

This utility model discloses a hydraulic nut which belongs to the technology field of mechanical engineering. The hydraulic nut is used for of choosing sealing rings with proper standards that the nut should be easy to wring and that the bearing capacity should be able to be freely enlarged. The hydraulic nut includes a nut body which is provided with knurls and a driving hole on the surface; a hold-down ring which is coated with a O-ring is contained in an annular oil cavity which is connected with an oil drain hole and a filler well which are contained in a counter bore; the filler well contains a quick coupler; the oil drain hole contains an oil drain valve; all of the O-ring, the quick coupler, and the oil drain valve are standard components. The hydraulic nut can be widely used on large screws which are frequently dismantled and fixed.

Description

Hydraulic nut

Technical field

The utility model relates to a kind of hydraulic nut, particularly a kind of hydraulic nut that is applied in the industries such as machinery, metallurgy, oil, chemical industry by means of hydraulic pre-tightening.

Background technique

Some occasion in industries such as machinery, metallurgy, oil, chemical industry is often wanted frequent dismounting, the big specification nut more than the fastening main shaft M125, not only need by instrument, labor intensity is big, and the dismounting nut will take the certain space position, the dismounting inconvenience often influences for this reason and produces.China Patent No. 98233101.0 discloses a kind of hydraulic nut, it is the combined seal ring, gland, the oil drain plug that are made of " O " RunddichtringO and non-standard seal ring dress in nut body, 8 millimeters the ring shaped slot, ring shaped slot, be arranged on nut body circumference one side radially the oil-feed device of high pressure leakproof oil nozzle constitute.Its deficiency is the increase that has limited circular groove, and seal ring is made difficulty, and bearing capacity is limited.

Summary of the invention

The utility model overcomes deficiency of the prior art, and a kind of standard seal circle of selecting for use is provided, and can strengthen the hydraulic nut of bearing capacity simultaneously arbitrarily.

In order to solve the problem of above-mentioned technology, the utility model is achieved through the following technical solutions: hydraulic nut comprises nut body, oilhole, annular oil cavity, hold-down ring, drain oil, counterbore, tank filler sleeve, hold-down ring is with " O " shape seal ring, tank filler sleeve is equipped with quick release coupling, and drain oil is equipped with fuel outlet valve to be formed.

The utility model also can be realized like this: on the basis of above scheme, have driving hole (8) on the nut body (1).

The utility model can also be realized like this: on the basis of above scheme, nut body (1) surface is shaped on annular knurl.

Compared with prior art, the beneficial effects of the utility model are: a kind of standard seal circle of selecting for use is provided, has been convenient to turn nut, can strengthen the hydraulic nut of bearing capacity simultaneously arbitrarily.

Description of drawings

Fig. 1 is a structural profile schematic representation of the present utility model;

Fig. 2 is the side-looking partial sectional view of Fig. 1.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail: hydraulic nut comprises that the surface is shaped on annular knurl 7 and the nut body 1 that has four driving holes 8, the hold-down ring 5, annular oil cavity 3 that cover " O " shape seal ring 4 is housed in the annular oil cavity 3 by oilhole 2 be contained in counterbore 10 in are connected with tank filler sleeve 11 at drain oil 9, tank filler sleeve 11 is equipped with quick release coupling 12, and drain oil 9 is equipped with fuel outlet valve 13." O " shape seal ring 4, quick release coupling 12 and fuel outlet valve 13 all are standard piece.

Claims (3)

1, a kind of hydraulic nut, comprise nut body (1), oilhole (2), annular oil cavity (3), hold-down ring (5), drain oil (9), counterbore (10), tank filler sleeve (11), it is characterized in that hold-down ring (5) is with " O " shape seal ring (4), tank filler sleeve (11) is equipped with quick release coupling (12), and drain oil (9) is equipped with fuel outlet valve (13) to be formed.

2, hydraulic nut as claimed in claim 1 is characterized in that having on the nut body (1) driving hole (8).

3, hydraulic nut as claimed in claim 1 or 2 is characterized in that nut body (1) surface is shaped on annular knurl.

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