CN202810860U

CN202810860U - Shield tunneling machine cone-shaped cutterhead

Info

Publication number: CN202810860U
Application number: CN 201220481480
Authority: CN
Inventors: 张照煌; 王磊; 李福田; 孟亮; 孙飞
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2012-09-19
Filing date: 2012-09-19
Publication date: 2013-03-20
Anticipated expiration: 2022-09-19

Abstract

The utility model belongs to the technical field of shield tunneling machine cutterhead design, and relates to a shield tunneling machine cone-shaped cutterhead. The cutterhead, spoke strips and a mytiliform knife rest form a cone-shaped structure, and the cone vertex semiangle alpha is smaller than or equal to arctan f. The alpha is the cone vertex semiangle, and f is a static friction coefficient between the shield tunneling machine cutterhead and a rock. The spoke strips are evenly distributed. The number N of the spoke strips is an integer. A is the width of the spoke strips. B is smaller than the minimum of L, W and H. L, W and H are determined according to geological examination data. L is the maximum size of an upper boulder along the length direction, W is the maximum size of the upper boulder along the width direction, and H is the maximum size of the upper boulder along the height direction. According to the shield tunneling machine cone-shaped cutterhead, not only is the rigidity of the cutterhead improved, the interaction of a knife and the boulder is reduced, shield tunneling working efficiency is effectively improved, energy consumption during pushing forward can be effectively lowered under the condition that tunneling amount is the same, by preliminary estimate, working efficiency can be improved by 5%, energy consumption can be lowered by 5%, and accordingly the using rate of a shield tunneling machine is effectively improved.

Description

A kind of shield machine taper cutterhead

Technical field

The utility model belongs to the cutter head of shield machine design field, particularly a kind of shield machine taper cutterhead.

Background technology

Cutter head of shield machine all is the plane cutterhead at present, and in use, when especially meeting erratic boulder (boulder) stratum, serious wear, its consumption of fixing a cutting tool reach greatly the problems such as driving damages midway, have strengthened cost when affecting digging efficiency.

Summary of the invention

The utility model tunnels in meeting erratic boulder (boulder) stratum for shield machine plane cutterhead and exists serious wear, its consumption of fixing a cutting tool to reach greatly the not enough problems such as driving damages midway, and a kind of shield machine taper cutterhead is provided.

The technical solution adopted in the utility model is:

The center of cutterhead arranges the mytiliform knife rest, and the mytiliform cutter is installed on the mytiliform knife rest, install on the cutterhead a plurality of centered by the mytiliform knife rest to extraradial spoke;

Described cutterhead, spoke and mytiliform knife rest consist of pyramidal structure, vertex of a cone half-angle α≤arctanf then, and wherein, α is vertex of a cone half-angle, f is the confficient of static friction of cutter head of shield machine and rock;

Spoke evenly distributes, and its quantity N is integer, and , wherein, A is the width of spoke, B＜min (L, W, H), L, W, H determine by the geological exploration data, wherein, L be the top erratic boulder in the maximum size of length direction, W be the top erratic boulder in the maximum size of width, H is the maximum size of top erratic boulder on short transverse.

The beneficial effects of the utility model are: this cutter head of shield machine has not only improved cutterhead rigidity, has reduced the interaction of cutter and erratic boulder, Effective Raise shield structure operating efficiency; Because the impact of cone angle, the downward sliding force of erratic boulder is less than the stiction of itself and cutterhead, the erratic boulder of shield cutter top is realized from steady, more can measure in the identical situation energy consumption that effectively reduces when advancing at driving, preresearch estimates can improve operating efficiency and reduce energy consumption each about 5%, thereby Effective Raise shield machine utilization rate.

Description of drawings

Fig. 1 is the front view of shield machine taper cutterhead;

Fig. 2 is the top view of shield machine taper cutterhead.

Number in the figure:

The 1-cutterhead; 2-mytiliform cutter; The 3-spoke.

The specific embodiment

The utility model provides a kind of shield machine taper cutterhead, below in conjunction with the drawings and specific embodiments the utility model is described further.

Fig. 1 is the shield cutter front view; Fig. 2 shield cutter top view.The center of cutterhead 1 arranges the mytiliform knife rest, and mytiliform cutter 2 is installed on the mytiliform knife rest, install on the cutterhead 1 a plurality of centered by the mytiliform knife rest to extraradial spoke 3; At first the setting of parameters described:

D-cutter diameter (m);

α-taper cutterhead vertex of a cone half-angle (rad);

A-spoke width (m);

The confficient of static friction of f-cutter head of shield machine and rock.

Cutterhead 1, spoke 3 and mytiliform knife rest consist of pyramidal structure, vertex of a cone half-angle α≤arctanf then, and wherein, α is vertex of a cone half-angle.

Spoke 3 evenly distributes, and its quantity N is integer, and

, wherein, B＜min (L, W, H), L, W, H determine by the geological exploration data, wherein, L be the top erratic boulder in the maximum size of length direction, W be the top erratic boulder in the maximum size of width, H is the maximum size of top erratic boulder on short transverse.

Claims

1.. a shield machine taper cutterhead, the center of cutterhead (1) arranges the mytiliform knife rest, and mytiliform cutter (2) is installed on the mytiliform knife rest, cutterhead (1) is upper install a plurality of centered by the mytiliform knife rest to extraradial spoke (3);

It is characterized in that,

Described cutterhead (1), spoke (3) and mytiliform knife rest consist of pyramidal structure, vertex of a cone half-angle α≤arctanf then, and wherein, α is vertex of a cone half-angle, f is the confficient of static friction of cutter head of shield machine and rock;

Spoke (3) evenly distributes, and its quantity N is integer, and

, wherein, A is the width of spoke, B＜min (L, W, H), L, W, H determine by the geological exploration data, wherein, L be the top erratic boulder in the maximum size of length direction, W be the top erratic boulder in the maximum size of width, H is the maximum size of top erratic boulder on short transverse.