Anti-sediment structure for cutter head of tube push bench

Abstract

The utility model discloses a pipe push bench cutterhead sediment prevention structure which comprises an inner ring sleeve, a pipe push bench cutterhead and a mud bin, the inner ring sleeve is arranged on the pipe push bench cutterhead in an integrated structure, a cutterhead outer ring plate is arranged on the periphery of the pipe push bench cutterhead, and the cutterhead outer ring plate and the inner ring sleeve are fixedly connected in a welded mode. And the inner ring sleeve is matched with the mud bin in a lap joint manner. By the adoption of the technical scheme, when the cutter head rotates, the inner ring sleeve effectively makes up a gap between the inner ring sleeve and a mud bin, the problem of slag leakage is well solved, and the cutter head is simple in structure, good in effect and good in economic benefit.

Description

Technical Field

[0001] The utility model relates to the technical field of cutter head structures of pipe jacking machines, in particular to an anti-sedimentation structure of the cutter head of a pipe jacking machine. Background Art

[0002] During tunneling, rock debris crushed by the cutterheads enters the mud chamber along with the circulating water or working mud for discharge. Due to the gap between the cutterhead and the mud chamber, some of the debris leaks out. This leaked debris settles at the bottom of the cutterhead, filling the overexcavation annulus and reducing discharge efficiency. In complex formations, cutterhead leakage can lead to unstable mud chamber pressure and even cause the pipe jacking machine to become stuck in the rock tunnel, preventing it from advancing, resulting in failure or accidents.

[0003] The commonly used slag removal technology currently involves installing a high-pressure circulating water device on the pipe jacking machine's barrel. This high-pressure circulating water carries the slag to the machine's cutterhead and into the mud chamber for discharge. However, this cannot guarantee secondary leakage of the crushed slag from the cutterhead gap. The main problem is that it cannot fundamentally eliminate slag leakage from the cutterhead. Even using an external water supply and the function of the diversion trough can only infinitely circulate the sediment on the outer wall of the pipe jacking machine. This cannot completely eliminate slag leakage from the cutterhead, affecting construction efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a pipe jacking machine cutter head anti-sludge structure, which adopts an inner ring sleeve and is provided with a cutter head with an inner ring sleeve structure. When the cutter head rotates, the inner ring sleeve effectively fills the gap between the cutter head and the mud bin, and solves the problem of slag leakage. The utility model has a simple structure, good effect and good economic benefits.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A pipe jacking machine cutter disc anti-sedimentation structure comprises an inner ring sleeve, a pipe jacking machine cutter disc and a mud bin. The inner ring sleeve is an integrated structure arranged on the pipe jacking machine cutter disc, and the inner ring sleeve and the mud bin are arranged in an overlapping manner.

[0007] As a further solution of the present invention: a cutter disc outer ring plate is provided around the cutter disc of the pipe jacking machine, and the cutter disc outer ring plate is fixedly welded to the inner ring sleeve.

[0008] Beneficial effects of the utility model:

[0009] (1) When the cutter head of the pipe jacking machine rotates, the crushed stones cut by the cutter head enter the mud bin and leak out from the gap between the cutter head and the mud bin, and cannot be effectively discharged from the slag discharge port. The cutter head of the pipe jacking machine adds an inner ring sleeve to block the gap between the cutter head and the mud bin during the cutting process, so that the slag discharge is smooth and efficient;

[0010] (2) In composite formations, slag leakage from the cutterhead of the pipe jacking machine will lead to unstable mud bin pressure, and may even cause the pipe jacking machine to be locked in the rock tunnel and unable to advance. The addition of an inner ring sleeve to the cutterhead of the pipe jacking machine effectively forms a closed space in the mud bin, and the mud bin pressure will not leak due to gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the inner ring structure of the utility model;

[0014] Figure 3 yes Figure 2 AA section diagram in ;

[0015] Figure 4 This is a schematic diagram of the welding connection between the inner ring sleeve and the outer ring plate of the cutter head of the utility model.

[0016] In the figure: 1. Inner ring sleeve; 2. Cutter head of pipe jacking machine; 3. Mud bin; 4. Outer ring plate of cutter head. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in the description of the present invention, the meaning of "multiple" and "several" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0019] See also Figures 1 to 4 As shown, the utility model is a pipe jacking machine cutter disc anti-sedimentation structure, including an inner ring sleeve 1, a pipe jacking machine cutter disc 2 and a mud bin 3. The inner ring sleeve 1 is an integral structure arranged on the pipe jacking machine cutter disc 2. A cutter disc outer ring plate 4 is provided around the pipe jacking machine cutter disc 2. The cutter disc outer ring plate 4 and the inner ring sleeve 1 are fixedly welded and connected, and the inner ring sleeve 1 and the mud bin 3 are overlapped and matched.

[0020] The working principle of the utility model is as follows: after the cutter head 2 cuts, when the stone slag enters the mixing chamber of the pipe jacking machine, the inner ring sleeve 1 on the cutter head 2 of the pipe jacking machine overlaps with the mud chamber 3 to prevent the slag from leaking out.

[0021] It should be understood that when the cutter head 2 of the pipe jacking machine rotates, the gravel cut by the cutter head 2 enters the mud bin 3 and leaks out from the gap between the cutter head 2 and the mud bin 3, and cannot be effectively discharged from the slag discharge port. The cutter head 2 of the pipe jacking machine adds an inner ring sleeve 1 to block the gap between the cutter head 2 and the mud bin 3 during the cutting process, so that the slag discharge is smooth and efficient.

[0022] In composite formations, slag leakage from the cutter head 2 of the pipe jacking machine will lead to unstable pressure in the mud bin 3, and may even cause the pipe jacking machine to be locked in the rock tunnel and unable to advance. The addition of an inner ring sleeve 1 to the cutter head 2 of the pipe jacking machine effectively forms a closed space in the mud bin 3, and the pressure in the mud bin 3 will not leak due to gaps.

[0023] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A pipe jacking machine cutter head anti-sludge structure, characterized in that: It comprises an inner ring sleeve (1), a pipe jacking machine cutter disc (2) and a mud bin (3); the inner ring sleeve (1) is arranged as an integral structure on the pipe jacking machine cutter disc (2), and the inner ring sleeve (1) and the mud bin (3) are arranged in an overlapping manner.

2. The anti-sedimentation structure of the cutter head of a pipe jacking machine according to claim 1 is characterized in that: A cutter disc outer ring plate (4) is provided around the cutter disc (2) of the pipe jacking machine, and the cutter disc outer ring plate (4) is fixedly welded to the inner ring sleeve (1).

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