CN212838784U

CN212838784U - Hydraulic stretching ultrahigh-pressure locking structure

Info

Publication number: CN212838784U
Application number: CN202021105932.XU
Authority: CN
Inventors: 刘刚; 朱景玉; 吴强
Original assignee: Wuxi Jutong Mining Machinery Co ltd
Current assignee: Wuxi Jutong Mining Machinery Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-03-30
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to a hydraulic pressure tensile super high pressure locking structure, including nut and screw rod, the nut middle part is the nut internal thread, open in the nut internal thread outside has the hydro-cylinder chamber, hydro-cylinder chamber is radial to being opened there is the oiling mouth, the oiling mouth passes through the oil circuit intercommunication the hydro-cylinder chamber, it sets up the sliding sleeve to slide in the hydro-cylinder chamber, the sliding sleeve with installation sealing washer between the hydro-cylinder chamber, the ring is screwed up to sliding sleeve periphery threaded connection. The utility model discloses simple structure, the fastening fastness of work piece can be improved in the operation of being convenient for.

Description

Hydraulic stretching ultrahigh-pressure locking structure

Technical Field

The utility model belongs to the technical field of fastening connection spare, a tensile super high-pressure locking structure of hydraulic pressure is related to.

Background

In various industrial applications, components are joined together through the use of fasteners. In some applications, there may be gaps between the components. For example, two panels may be separated by a gap, into which portions of other components may be left. Nut fasteners with length adjustment are often used to accommodate or compensate for the gap between the components. The length of the nut fastener can be adjusted by rotation of the fastener.

Disclosure of Invention

An object of the utility model is to provide a hydraulic pressure stretches super high pressure locking structure can improve the joint strength of fastener.

According to the utility model provides a technical scheme: the utility model provides a hydraulic pressure is stretched super high pressure and is locked structure, includes nut and screw rod, the nut middle part is the nut internal thread, open in the nut internal thread outside has the hydro-cylinder chamber, hydro-cylinder chamber is radial to being opened there is the oiling mouth, the oiling mouth passes through the oil circuit intercommunication the hydro-cylinder chamber, it sets up the sliding sleeve to slide in the hydro-cylinder chamber, the sliding sleeve with install the sealing washer between the hydro-cylinder chamber, the ring is screwed up in sliding sleeve periphery threaded connection.

As a further improvement of the utility model, the sliding sleeve with install the sealing washer between the hydro-cylinder chamber.

As a further improvement, the O-shaped sealing ring is installed at the bottom of the oil filling port.

As a further improvement, the sealing ring is a steel rubber sealing ring.

As a further improvement, the oil filling port is provided with an oil plug.

As a further improvement of the utility model, the nut is in threaded connection with the screw rod.

The utility model discloses an actively advance the effect and lie in:

the utility model discloses simple structure, the fastening fastness of work piece can be improved in the operation of being convenient for.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the nut of the present invention.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings.

In the figure 1-2, the oil cylinder comprises a nut 1, a nut internal thread 1-1, an oil cylinder cavity 1-2, an oil injection port 1-3, an oil path 1-4, an oil plug 2, a sealing element 3, a sliding sleeve 4, a tightening ring 5, a screw 6, an O-shaped sealing ring 7, a locked workpiece 8, a fixing element 9 and the like.

As shown in figure 1, the utility model relates to a hydraulic stretching ultrahigh pressure locking structure, including nut 1 and screw rod 6, as shown in figure 2, nut internal thread 1-1 is arranged at nut 1 middle part for be connected with screw rod 6, and open in the nut internal thread 1-1 outside has hydro-cylinder chamber 1-2, and hydro-cylinder chamber 1-2 radially opens there is oiling mouth 1-3, and oiling mouth 1-3 leads to hydro-cylinder chamber 1-2 through oil circuit 1-4.

A sliding sleeve 4 is arranged in the oil cylinder cavity 1-2 in a sliding mode, and a sealing element 3 is arranged between the sliding sleeve 4 and the oil cylinder cavity 1-2 to prevent oil from leaking.

The periphery of the sliding sleeve 4 is connected with a screwing ring 5 through screw threads.

An O-shaped sealing ring 7 is arranged at the bottom of the oil filling port 1-3 to improve the sealing property during oil filling.

The sealing element 3 is a steel rubber sealing ring.

In order to prevent impurities from entering the cylinder chamber 1-2, an oil plug 2 is installed in the oil filling port 1-3.

The working process of the utility model is as follows:

firstly, a screw 6 penetrates through a plurality of locked workpieces 8, one end of the screw is connected with a fixing part 9 through threads, the other end of the screw is connected with a nut 1 through threads, a sliding sleeve 4 is positioned between the nut 1 and the locked workpieces 8, high-pressure oil is injected into an oil injection port 1-3, the high-pressure oil enters an oil cylinder cavity 1-2 through an oil way 1-4, on one hand, the sliding sleeve 4 is pushed to move right to be tightly attached to the locked workpieces 8, the connecting strength is improved, on the other hand, the nut 1 is pushed to move left, and the nut internal threads 1-1 of the nut 1 drive the screw to move left through a thread structure to generate plastic stretching, so that the fastening force between the.

The tightening ring 5 is then rotated to the left until it abuts the right end face of the nut 1. And then, the pressure is released, and the nut 1 is prevented from resetting by screwing the ring 5, so that the whole locking structure still maintains the force during high pressure.

Claims

1. The utility model provides a hydraulic stretching super high pressure locking structure which characterized in that: the locking structure comprises a nut (1) and a screw rod (6), the middle of the nut (1) is a nut internal thread (1-1), an oil cylinder cavity (1-2) is formed in the outer side of the nut internal thread (1-1), an oil filling port (1-3) is formed in the oil cylinder cavity (1-2) in the radial direction, the oil filling port (1-3) is communicated with the oil cylinder cavity (1-2) through an oil way (1-4), a sliding sleeve (4) is arranged in the oil cylinder cavity (1-2) in a sliding mode, a sealing element (3) is installed between the sliding sleeve (4) and the oil cylinder cavity (1-2), and a tightening ring (5) is connected with the periphery of the sliding sleeve (4) in a threaded mode.

2. The hydraulically stretched ultrahigh pressure locking structure of claim 1, wherein: and a sealing element (3) is arranged between the sliding sleeve (4) and the oil cylinder cavity (1-2).

3. The hydraulically stretched ultrahigh pressure locking structure of claim 2, characterized in that: and an O-shaped sealing ring (7) is arranged at the bottom of the oil injection port (1-3).

4. The hydraulically stretched ultrahigh pressure locking structure of claim 1, wherein: the sealing element (3) is a steel rubber sealing ring.

5. The hydraulically stretched ultrahigh pressure locking structure of claim 1, wherein: an oil plug (2) is arranged in the oil filling port (1-3).

6. The hydraulically stretched ultrahigh pressure locking structure of claim 1, wherein: the nut (1) is in threaded connection with the screw rod (6).