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A structure to prevent the deflection of the piston rod of the shield machine's single propulsion cylinder

A technology of piston rod and shield machine, applied in the direction of fluid pressure actuating device, etc., can solve the problem of difficult deflection of the piston rod of single propulsion cylinder, and achieve the effect of not affecting the turning performance, improving efficiency, and simple structure

Active Publication Date: 2017-08-25
CHINA RAILWAY CONSTR HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the background technology, the present invention provides a structure to prevent the deflection of the piston rod of the single propulsion cylinder of the shield machine, so that the shoe spreader and the rubber sealing ring are not easily damaged, and the turning performance of the shield machine is not affected. It solves the problem of difficult deflection of the piston rod of a single propulsion cylinder, is safe and reliable, and can adapt to various diameters and layout types

Method used

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  • A structure to prevent the deflection of the piston rod of the shield machine's single propulsion cylinder
  • A structure to prevent the deflection of the piston rod of the shield machine's single propulsion cylinder
  • A structure to prevent the deflection of the piston rod of the shield machine's single propulsion cylinder

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Embodiment approach 1

[0044] Implementation Mode 1: Please refer to Figure 3 ~ Figure 7 , adjust the relative position of the piston rod 4 and the cylinder barrel 3 of the propulsion cylinder according to the correct deflection position of the strut 5 of the single propulsion cylinder, so that the correct position of the piston rod 4 is used as the rear installation The installation datum of the frame 9 and the stay shoe 5. The mounting frame 9 is fixedly mounted on the end of the piston rod 4, and the symmetry plane of the mounting frame 9 passes through the axis of the piston rod 4 and the axis (or center of circle) of the shield tail 6. Two anti-deflection mechanisms 8 are symmetrically fixedly installed on both sides of the mounting frame 9. When installing the anti-deflection mechanism 8, it should be ensured that the support platform 86 of this mechanism is kept in contact with the inner wall of the shield tail 6 or left behind. There is a small gap. The guide sleeve 85 is installed on the...

Embodiment approach 2

[0049] Implementation Mode 2: Please refer to Figure 10 and Figure 11 , put the piston rod 4 and the brace shoe 5 in the correct position according to the same steps of the embodiment, fix the anti-bias mechanism 8 on both sides of the brace shoe 5, and install the anti-bias mechanism 8, ensure that the support platform 86 is in close contact with the inner wall of the shield tail 6 and that the elastic member 84 is compressed to a certain extent. When the shield machine turns, the working process and deviation correction principle of the anti-deviation mechanism 8 are the same as those in the first embodiment.

[0050] The technical scheme provided by the invention has the following beneficial effects:

[0051] 1. By setting the anti-deflection mechanism 8 and using the cooperation of the guide sleeve 85, the elastic member 84 and the adjustment bolt 82, the piston rod 4 can automatically return to the equilibrium position when it deflects, effectively Prevent the circum...

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Abstract

The invention provides a structure for avoiding deflection of a single propulsion oil cylinder piston rod of a shield tunneling machine. The structure for avoiding deflection of the single propulsion oil cylinder piston rod of the shield tunneling machine comprises two anti-deflecting mechanisms fixedly connected with the left side and the right side of an outer wall of a supporting shoe or comprises an installing frame fixedly connected with the tail end of the piston rod and two anti-deflecting mechanisms fixedly connected with the installing frame. Each anti-deflecting mechanism comprises a support, an adjusting bolt, an adjusting block, an elastic part, a guiding sleeve and a supporting table; the support is fixedly connected with the outer wall of the supporting shoe or connected with the installing frame, an internal threaded hole is vertically formed in the support, the adjusting bolt is arranged in the threaded hole, the adjusting block is positioned at the top end of the adjusting bolt, the elastic part is vertically arranged, the bottom end of the elastic part is connected with the adjusting block, and the top end of the elastic part is connected with an inner top wall of the guiding sleeve. The lower end of the guiding sleeve is open, the upper end of the guiding sleeve is closed, the guiding sleeve is provided with a notch in the vertical direction, and the supporting table is arranged on an outer wall of the top end of the guiding sleeve. A shoe supporting plate and a rubber seal ring cannot be damaged easily due to the structure for avoiding deflection of the single propulsion oil cylinder piston rod of the shield tunneling machine, and the structure can improve working efficiency and enhance safety.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a structure for preventing the deflection of a piston rod of a single propulsion cylinder of a shield machine. Background technique [0002] In the shield construction process of tunnel engineering, due to the various divisions of segments, the arrangement of propulsion cylinders is also varied, including single-cylinder arrangement, double-cylinder arrangement, and single- and double-cylinder alternate arrangement. When the oil cylinder adopts a double cylinder arrangement, the ends of the two piston rods generally share a support shoe, so that the two piston rods will not deflect along the circumference of the piston rod due to the structural mutual restriction during the extension process of the piston rod, that is, There is no circumferential deflection (rotation) action of the piston rod and the support shoe relative to the cylinder block of the double propulsion cylind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/20
CPCF15B15/20
Inventor 程永亮郑大桥彭正阳麻成标唐崇茂苏翠侠刘学
Owner CHINA RAILWAY CONSTR HEAVY IND
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