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Overload protector for main drive speed reducer of shield tunneling machine, and shield tunneling machine

An overload protector and reducer technology, applied in the direction of automatic clutch, clutch, mechanical equipment, etc., can solve the problems of the main drive of the shield machine, the overload protection mechanism of the reducer can not be used, and achieve accurate fracture position, small occupied space, The effect of avoiding damage

Active Publication Date: 2021-07-02
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above technical problems, the present invention proposes an overload protector for the main drive reducer of the shield machine and a shield machine to solve the problem that the reducer overload protection mechanism in the prior art cannot be used for the main drive of the shield machine

Method used

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  • Overload protector for main drive speed reducer of shield tunneling machine, and shield tunneling machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0043] Embodiment 2: The safety bolt 4 is covered with a spring 7, and the spring 7 is arranged between the torque shaft 5 and the end cover 3, and the two ends of the spring 7 are in contact with the torque shaft 5 and the end cover 3 respectively, so that After the torque shaft 5 is disconnected from the end cover 3, the torque shaft 5 is bounced to one side of the motor to avoid friction with the end cover 3 to cause damage. Specifically, the torque shaft 5 and the end cover 3 are respectively provided with spring slots for accommodating the spring 7, wherein the torque shaft 5 is provided with a torque shaft spring slot 51, the end cover 3 is provided with an end cover spring slot, and the two ends of the spring 7 are respectively Butt the end away from the two torque slots. Moreover, the spring 7 is compressed when it is sleeved on the safety bolt 4 and packed between the two spring grooves, so that it has a pre-tightening force to spring the torque shaft 5 to one side of...

Embodiment 3

[0044] Embodiment 3: The safety bolt 4 is provided with a fracture reminder structure for reminding when the safety bolt 4 is broken due to overload.

[0045] Further, the fracture reminder structure includes a cavity 42 axially arranged on the safety bolt 4, the cavity 42 is arranged on the side of the safety bolt 4 close to the end cover 3, the outer end of the cavity 42 is open, and passes through The plug 9 with transparent material is closed, so that the inside of the cavity can be seen through the transparent material. The cavity 42 is provided with a colored liquid, which may be yellow or red and other eye-catching liquid. The length that the cavity 42 extends in the safety bolt 4 is greater than the length of the pre-opening stress groove 41 from the outer end of the safety bolt 4, that is, the length of the cavity crosses the position where the safety bolt 4 is provided with the pre-opening stress groove 41, so that the safety bolt 4 After the position of the pre-ope...

Embodiment 4

[0046] Embodiment 4: The end of the torque shaft 5 close to the protector housing passes through the motor shaft 1, and a bearing 6 is arranged between the torque shaft 5 and the sleeve 2, and the bearing 6 and the sleeve 2 are in clearance fit, and the bearing 6 Interference fit with sleeve 2. Specifically, an annular groove is arranged at one end of the sleeve 2 near the end cover 3, so that there is an annular space between the end of the sleeve 2 and the torque shaft 5, and a bearing 6 is arranged in the annular groove, and the bearing is sleeved on the torque shaft. shaft 5, but there is a certain gap between the bearing and the torque shaft 5 so that the torque shaft has a space to disengage from the end cover 3; To the role of bearing 6 axial positioning. And after disengagement, the effect of the bearing between the torque shaft 5 and the sleeve 2 can rotate relatively, and avoid the radial displacement of the torque shaft, and avoid the damage caused by the collision...

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Abstract

The invention discloses an overload protector for a main drive speed reducer of a shield tunneling machine. The overload protector for the main drive speed reducer of the shield tunneling machine comprises a hollow motor rotating shaft and a protector shell body arranged on the motor rotating shaft in a sleeving mode, wherein a torque shaft used for being connected with an input shaft of the speed reducer is arranged in the motor rotating shaft in a penetrating mode, and the torque shaft is connected with the protector shell body through a safety bolt capable of being broken. According to the invention, the motor rotating shaft and the torque shaft are connected through the protector shell body, the protector shell body and the torque shaft are connected through the safety bolt capable of being broken, under an overload condition, the safety bolt is broken, the torque of the motor cannot be transmitted to the torque shaft, and therefore the torque cannot be transmitted to the input shaft of the speed reducer, and the speed reducer is protected; and the torque shaft is arranged in the motor rotating shaft, so that the protector is simple in structure, small in occupied space and capable of being used for protecting a main drive in the shield tunneling machine.

Description

technical field [0001] The invention relates to the field of reducer protectors, in particular to an overload protector for a main drive reducer of a shield machine and a shield machine. Background technique [0002] The main drive reducer of the shield machine is used as an intermediate device for the power transmission of the shield machine. Its function is to reduce the speed and amplify the torque to the main drive after receiving the torque from the main drive motor through the planetary gear device inside the reducer, and then output it to the main drive. Driving the cutter head to excavate the tunnel is one of the core components of the shield machine. Once damaged, it is extremely difficult to replace due to the small working environment, and due to the geological uncertainty of the excavation surface, the cutter head and reducer are often subject to instantaneous large Load impact, so it is very important to choose a suitable overload protection device for the main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D43/20
CPCF16D43/20
Inventor 孙广文韩延武卢海洋栾飞朱列力
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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