Single-arm lifting ring and production process thereof

A production process and technology of lifting rings, applied in the field of single-arm lifting rings and its production technology, can solve the problems of unreasonable force on the lifting rings, coarse grains, stress concentration, etc., and achieve ideal comprehensive mechanical properties, uniform structure distribution, crystal crystal The effect of grain refinement

Pending Publication Date: 2021-01-08
江苏佰恰利机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are some disadvantages in the existing single-arm lifting ring, such as: unreasonable and uneven force on the lifting ring during use, prone to stress concentration, and inconvenient connection with the hook and elevator of the derrick; in addition, the existing single arm There are some disadvantages in the production process of the arm ring, such as: inconvenient processing and manufacturing, limited strength, and the internal grains are often coarse, which easily leads to stress concentration.

Method used

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  • Single-arm lifting ring and production process thereof
  • Single-arm lifting ring and production process thereof
  • Single-arm lifting ring and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to figure 1 and figure 2 , a single-arm lifting ring, including a large ring 1 used to connect with the hook of the derrick and a small ring 2 connected with the elevator, and there is an integral body between the small ring 2 and the large ring 1 The formed middle straight rod 3, the small ring 2 and the large ring 1 have waist-shaped grooves 4 respectively, wherein the small ring 2 has a curvature relative to the horizontal plane, and the initial bending line of the small ring 2 is located at the center of the waist-shaped groove 4 , the inclination angle between the small ring 2 and the horizontal plane is 40°.

[0031] refer to figure 1 and figure 2 Compared with the traditional lifting ring, this single-arm lifting ring adopts the design of enlarged ring 1 and small ring 2 at both ends of the middle straight rod 3, and the appearance is simple and clear; when this single-arm lifting ring is used, the large ring 1 can be connected with the large The hook...

Embodiment 2

[0033] refer to figure 1 and figure 2 , the difference from Example 1 is that the small ring 2 has a curvature relative to the horizontal plane, and the initial bending line of the small ring 2 is located at the center of the waist-shaped groove 4, and the inclination angle between the small ring 2 and the horizontal plane is 60°. The force analysis shows that the force of the single-arm suspension ring is the most balanced at this time.

Embodiment 3

[0035] The difference from Example 1 is that the present invention also provides a production process for a single-arm suspension ring, which specifically includes the following steps:

[0036] S1. Material selection: manufacture high-grade high-quality alloy steel 20SiMn2MoVE;

[0037] S2. Forging: Forging the steel of S1, the forging ratio is controlled not less than 3:1, and the forging texture is ensured on the entire component during forging. The forging adopts the form of die forging and free forging. Forging to ensure the shape and size, the middle straight bar 3 adopts free forging;

[0038] S3, machining: the large ring 1 and the small ring 2 are machined by a machining center, and the middle straight rod 3 is processed by a numerical control machine tool;

[0039] S4. Quenching and tempering treatment: the heat treatment process of normalizing-high temperature tempering-quenching-tempering is used for modulation treatment.

[0040] Among them, the shape and positio...

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PUM

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Abstract

The invention discloses a single-arm lifting ring and a production process thereof. According to key points of the technical scheme, the single-arm lifting ring comprises a large ring used for being connected with a derrick hook and a small ring connected with an elevator, and a middle straight rod integrally formed with the small ring and the large ring is arranged between the small ring and thelarge ring; and the small ring and the large ring are provided with kidney-shaped through grooves correspondingly, and the small ring has a bending degree relative to the horizontal plane. Compared with a traditional lifting ring, the single-arm lifting ring adopts the design that the large ring and the small ring are additionally arranged at the two ends of the middle straight rod, and the appearance is concise and clear; when the single-arm lifting ring is used, the large ring can be connected with the derrick hook, and the corresponding kidney-shaped through groove is designed in the largering according to the shape of the derrick hook, so that the large ring is conveniently connected with the hook; and the small ring is connected with the elevator, in order to be better attached to asuspension arm of the elevator, the small ring is designed with the bending degree, and therefore the suspension ring is stressed more evenly and reasonably.

Description

technical field [0001] The invention relates to the field of suspension rings, in particular to a single-arm suspension ring and a production process thereof. Background technique [0002] DH series single-arm lifting ring is an important tool for lifting or lowering the suspension elevator in the drilling and production operations of oil and gas and geological drilling departments. [0003] DH series single-arm lifting rings are well-selected, and are carefully manufactured by integral forging and special surface strengthening treatment. And after strict strength test and non-destructive testing, it has good structural characteristics and wear resistance. The rated load of the lifting ring is 150t (1350kN), 200t (1780kN), 250t (2250kN), 350t (3115kN), 500t (4450kN). The technical parameters and performance of the rings are in compliance with the requirements of API Spec 8C. [0004] DH series rings are single-arm rings, each two rings form an independent lifting system, ...

Claims

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Application Information

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IPC IPC(8): E21B19/02B23P15/00C21D1/25C21D9/00C22C38/02C22C38/04C22C38/12C22C38/16C22C38/42C22C38/44C22C38/46
CPCE21B19/02B23P15/00C21D9/0068C21D1/25C22C38/02C22C38/04C22C38/12C22C38/16C22C38/42C22C38/44C22C38/46
Inventor 郏楚豪花建国
Owner 江苏佰恰利机械有限公司
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