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A retractable swivel joint

A technology of rotary joints and rotors, applied in mining equipment, tunnels, earth-moving drilling, etc., to achieve the effect of improving geological adaptability and safety, and reducing the risk of wear and tear

Active Publication Date: 2020-09-11
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no device in China about how to solve the problem of how to realize the active expansion and contraction of the passive stirring rod in the excavation chamber of the shield machine

Method used

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  • A retractable swivel joint
  • A retractable swivel joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: as Figure 1-2 As shown, a retractable rotary joint includes a cutter head 1, a shield shell 2, an excavation bin 3, a rotary joint 4, a driving device 5 and a front shield partition 6, and the front shield partition is fixed on the shield shell 2. 6. A drive device 5 is fixed on the front shield clapboard 6, a rotary joint 4 is arranged in the middle of the shield shell 2, a cutter head 1 is arranged at the front end of the shield shell 2, the cutter head 1 is connected with the driving device 5, and the front shield clapboard 6 is connected with the driving device 5. An excavation bin 3 is arranged between the cutter heads 1 , the driving device 5 drives the cutter head 1 to rotate to excavate and cut the stratum, and the slag flows inside the excavation bin 3 .

[0021] The rotary joint 4 includes a rotary joint rotor 15 and a rotary joint stator 8. The rotary joint rotor 15 is movably connected to the rotary joint stator 8. A copper sleeve 13 is fixed on ...

Embodiment 2

[0024] Embodiment 2: A telescopic rotary joint, the front end of the stirring shaft 14 is horizontally and fixedly connected to the stirring rod 11 through splines, and the front end of the stirring shaft 14 is clamped and fixed by a semicircular key to prevent the stirring shaft 14 from moving axially, and then use The end cover 19 is fixed to cover the stirring shaft 14 to prevent the stirring shaft 14 from being worn in the excavation bin 3 . The rest are the same as in Example 1.

Embodiment 3

[0025] Embodiment 3: a retractable rotary joint, the working method is:

[0026] 1) Telescopic: The hydraulic cylinder 10 is telescopic forward and backward, which drives the motor 17 to move forward and backward relative to the rotary joint 4. The motor 17 drives the stirring shaft 14 to move forward and backward through the coupling 16, and the stirring shaft 14 further drives the stirring rod 11 to expand and contract;

[0027] 2) Sealing: During the forward and backward movement of the stirring rod 11, the inner seal 12 of the cutter head drive shaft sleeve 18 separates the excavation bin 3 from the copper sleeve 13, so as to prevent the dregs from hindering the rotation of the stirring shaft 14;

[0028] 3) Adding the improvement liquid: The cutter head drive bushing 18 is fixed with the rotary joint rotor 15, the driving device 5 drives the cutter head 1 to rotate, and the cutter head 1 rotates to drive the rotary joint rotor 15 to rotate, and then the improvement liquid ...

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Abstract

The invention provides a telescopic rotary joint. The joint comprises a cutter plate, a shield housing, an excavating chamber, a rotary joint, a driving device and a front shield separating plate, therotary joint comprises a rotary joint rotor and a rotary joint stator, a copper sleeve is fixed to the rotary joint rotor, one end of a stirring shaft penetrates through the copper sleeve to be fixedly connected with a stirring bar, the other end of the stirring shaft is fixedly connected with a motor through a coupler, the rotary joint stator is fixedly provided with the driving device, the driving device is fixedly provided with a rotary joint fixing frame, the rotary joint fixing frame is fixedly provided with a hydraulic oil cylinder, the hydraulic oil cylinder is fixedly connected with amotor installing frame, and the motor is fixed to the interior of the motor installing frame. The length of the stirring bar is adjustable, adjustment can be conducted according to different geologies to reduce the risks of stirring damage and the wearing of the sealing pressing ring of the driving device, and the geological adaptability and safety of a shield machine are improved.

Description

technical field [0001] The invention relates to the technical field of tunneling and construction of tunnel shield machines, in particular to a retractable rotary joint. Background technique [0002] At present, in the shield construction of existing underground tunnel projects in China, due to the complex and diverse geology, there are various types of shield machines, and earth pressure balance shield machine is one of them. In the process of excavation, the earth pressure balance shield machine is fully stirred in the excavation bin to form fluid plastic muck after the slag modifier, and then forms a pressure balance with the tunnel face to maintain the formation of the shield during excavation. stability. [0003] However, in the traditional design shield, there is a passive stirring rod on the partition of the main drive device, and its extension length is not adjustable. The passive stirring rod on the top is easily knocked off, and the falling passive stirring rod w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E21D9/08E21D9/00
CPCE21D9/001E21D9/0642E21D9/0678E21D9/08
Inventor 高文梁董亚岭王昆廖兆锦马钢建许发成
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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