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A connection head for external oil pipeline of construction machinery in low temperature environment

A technology for construction machinery and low temperature environment, applied in the direction of pipe/pipe joint/pipe fitting, mechanical equipment, sealing surface connection, etc., can solve the problems of poor installation and fixation stability, high cost of preparation process, low installation efficiency, etc., to achieve installation stability Good, good material wear resistance, simple structure effect

Active Publication Date: 2020-11-03
刘晓芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The publication number CN205173691U discloses a U-shaped low-temperature sealing ring, including a U-shaped sealing ring body, and the opening of the U-shaped sealing ring body is arranged below the packing gland and is located in the packing part between the valve stem and the valve cover. The two ends of the opening of the U-shaped sealing ring body are provided with lips, and the inner surface of the U-shaped sealing ring body is provided with a U-shaped spring, and the U-shaped spring is attached to the inner surface of the U-shaped sealing ring body On the other hand, the installation efficiency of this utility model is low when the sealing ring is used
[0005] The notification number CN102767572B discloses a low-temperature-resistant sealing ring, including: a sealing ring and a supporting frame, the sealing ring is a rubber sealing ring, and the supporting frame is a steel frame, and the sealing ring and the supporting frame are assembled by injection molding It is a whole body, and the inner diameters of the sealing ring and the supporting frame are equal, and the outer diameter of the supporting frame is larger than the outer diameter of the sealing ring. The invention uses a steel frame combined with a sealing ring for sealing. Its structure Complicated, the cost of the preparation process is high, and when the oil pipe joint is used, due to the small size, the installation and fixation stability is poor

Method used

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  • A connection head for external oil pipeline of construction machinery in low temperature environment
  • A connection head for external oil pipeline of construction machinery in low temperature environment
  • A connection head for external oil pipeline of construction machinery in low temperature environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The invention relates to an external oil pipeline connection head of construction machinery in a low temperature environment, which includes a ferrule joint (1), a sealing ring (2), an oil pipe joint, and the ferrule joint (1) and the oil pipe joint are screwed together. The ferrule joint (1) There is a sealing ring (2) between the oil pipe joint, and the sealing ring (2) is clamped and placed at the end of the sealing surface of the oil pipe joint. ), the inner card slot (5), the connecting pipe (7), the sealing chuck (8) and the fastening screw sleeve (9), the connecting pipe (7) is placed on the sealing chuck (8), and the sealing chuck The head (8) is a hollow structure and communicates with the connecting pipe (7). The end surface of the sealing chuck (8) is a conical surface, and the conical surface is used for sealing with the ferrule joint (1). On the surface, the outer wall of the connecting pipe (7) is provided with a plurality of annular protrusions for connec...

specific Embodiment 2

[0058] as attached Figure 5-8 The difference between shown specific embodiment 2 and specific embodiment 1 is:

[0059] The sealing ring (2) is provided with an inner convex strip (10), the inner convex strip (10) is located at the edge of one side of the inner annular groove, and the outer card groove (4) on the sealing chuck (8) There is an annular groove (11) at the root, and the annular groove (11) corresponds to the inner convex strip (10). After the sealing ring (2) is engaged with the sealing chuck (8), the sealing ring ( 2) There is an interval between the outer surface and the outer card groove (4). When sealing, install the sealing ring (2) on the sealing chuck (8), and then connect it with the ferrule joint (1), and tighten it by The screw sleeve (9) is connected, and the outer surface of the sealing ring (2) is squeezed by the tightening pressure, so that the outer surface of the sealing ring (2) fits the outer card groove (4), and then the inner convex strip (10...

specific Embodiment 3

[0061] as attached Figure 9 The difference between the specific embodiment 3 shown and the specific embodiment 1 is that the depth of the inner clamping groove (5) extending into the sealing chuck (8) is reduced, and the inner diameter of the inner clamping groove (5) is along the extending direction Gradually decreases, and the corresponding depth of the inner ring of the sealing ring (2) decreases;

[0062] The change of the depth of the inner card groove (5) extending into the sealing chuck (8) reduces the depth of the sealing ring (2) and the sealing chuck (8) for installation and wrapping, reduces the holding force, and facilitates installation and disassembly;

[0063] The inner diameter of the inner card groove (5) gradually decreases along the direction of extension, and a flaring structure can be formed on the inner wall, and when the sealing ring (2) is tightened and extruded, it can be further retracted along the flaring to avoid Squeeze adhesion to the sealing ch...

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PUM

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Abstract

The invention discloses an external oil conveying pipe of an engineering machine connector in a low-temperature environment and a connecting mode of a clamping sleeve. Rapid installation is carried out in the low-temperature environment, and an oil pipe connector sealing ring with a ring-shaped sealing area and a connector matched with the oil pipe connector sealing ring are formed at the sealingposition; and the connector is characterized in that a sealing ring is arranged between a clamping sleeve connector and an oil pipe connector, the sealing ring is clamped at the end part of the sealing surface of the oil pipe connector, and a connecting pipe is arranged on the sealing clamping head; the sealing clamping head is of a hollow structure, and is in communication with the connecting pipe; the end surface of the sealing clamping head is a conical surface, the conical surface is a sealing surface which is used for being attached to the clamping sleeve connector, and a plurality of annular protrusions used for being connected to rubber hoses are arranged on the outer side wall of the connecting pipe; and a fastening screw sleeve is arranged on the sealing clamping head, the fastening screw sleeve is used for being in threaded connection with the clamping sleeve connector, and a pipe body clamping sleeve is arranged on the sealing clamping head and is arranged on the outer sidewall of the connecting pipe in a sleeving mode.

Description

technical field [0001] The invention relates to an external oil pipe connector of engineering machinery in a low temperature environment, relates to a sealing structure for an external hydraulic oil pipe joint when the engineering machinery works in a low temperature environment, and belongs to the field of mechanical accessories. In particular, it relates to an oil pipe joint sealing ring and a matching connecting head which can be quickly installed in a low-temperature environment by using a ferrule connection method and form a ring-shaped sealing area at the sealing position. Background technique [0002] At present, when working on construction machinery, hydraulic structures are mostly used. During this period, a large number of hoses are used for oil delivery, and fixed laying is carried out on the outside of the mechanical equipment. Usually, ferrule joints are used on the mechanical equipment to connect with the oil delivery hose. , the existing ones mainly use taper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L19/03
Inventor 刘晓芳
Owner 刘晓芳