CN215860000U

CN215860000U - Runner reamer

Info

Publication number: CN215860000U
Application number: CN202121916968.0U
Authority: CN
Inventors: 鲍洪锋; 周中吉; 倪铁军
Original assignee: Wuxi Double Horse Drilling Tools Co ltd
Current assignee: Wuxi Double Horse Drilling Tools Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-02-18
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses a runner reamer which comprises a main shaft and a conical main body arranged on the main shaft, wherein a plurality of spiral runner grooves are formed in the conical surface of the conical main body from the conical top to the conical bottom, a spiral working surface is formed on the conical surface which is not grooved, a plurality of cutter heads which are distributed according to the spiral line are welded on the working surface, and a plurality of convex blocks are arranged in the area, on which the cutter heads are not arranged, of the working surface. Above-mentioned runner enlarger has effectively improved the working face wearing and tearing condition through increasing the lug design on to current enlarger working face to help sand grain, iron fillings water conservancy diversion to runner groove, promoted certain chip removal ability, it is simple to reform transform, can not influence original enlarger performance, and is effective practical.

Description

Runner reamer

Technical Field

The utility model relates to the technical field of trenchless soil layer drilling tools, in particular to a runner reamer.

Background

The trenchless technology refers to a technology and a method for detecting, checking, repairing and laying various underground utilities under the condition of trenchless earth surface, the trenchless guiding drilling laying pipeline is a pipe laying technology developed by introducing modern guiding technology on the basis of the traditional pipe-jacking method and the pipe laying method which can not perform directional horizontal drilling, and the construction sequence is as follows: the method comprises the steps of firstly drilling a first-stage hole along the design track of a to-be-laid pipeline by using a pipe laying machine arranged on the ground, then installing a reamer at the unearthed end by using a passed drill rod to perform back expansion so as to enlarge the diameter suitable for laying a production pipeline, and then pulling the to-be-laid pipeline into the hole, so that pipeline construction is realized on the premise of not damaging the landform. The runner type reamer has certain cutting and chip removal effects while extruding the stratum, has wide applicability and can be used in most soil layers.

Most of the existing runner type underreamers are shown in fig. 3, and comprise a casting cone 1 ', wherein tool bits 3' are uniformly arranged on a conical surface 2 'of the casting cone 1' according to a spiral line, a runner 4 'is formed on the conical surface 2', and a water hole 5 'is arranged on the runner 4' so as to clean the surface of the underreamer and avoid coating of a soil layer. The reamer with the structure is found in use, because the casting cone 1 ' is a hollow casting, iron chips and sand grains seriously wear the conical surface 2 ' in the working process and even deform, the fixation and the use of the tool bit 3 ' are indirectly influenced, the service life of the whole reamer is further influenced, and further optimization is needed.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, an object of the present invention is to provide a flow channel reamer, which can improve the wear resistance of the working surface of the reamer and prolong the service life.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a runner reamer, its includes the main shaft and sets up the toper main part on the main shaft, sets up the runner groove of a plurality of helix type from the conical top to the awl end on the conical surface of toper main part, forms the working face of helix type on the non-grooved conical surface, and the welding has the tool bit that a plurality of arranged according to the helix type on the working face, and the region of not installing the tool bit on the working face is provided with a plurality of lug.

Preferably, the bumps are semi-spherical and are arranged regularly in a spiral line.

Preferably, the cutting heads are arranged along the edge of the working surface, and the projections are located on the same side of the cutting heads.

Preferably, the conical main body is a casting, and the runner groove and the lug on the conical main body are integrally cast.

In conclusion, the flow channel reamer has the beneficial effects that the design of the convex blocks is added on the working surface of the existing reamer, so that the abrasion condition of the working surface is effectively improved, sand grains and scrap iron are guided to the flow channel groove, certain chip removal capability is improved, the improvement is simple, the performance of the original reamer is not influenced, and the flow channel reamer is effective and practical.

Drawings

Fig. 1 is a schematic structural diagram of a flow channel reamer according to an embodiment of the present invention;

figure 2 is an axial view of a flow path reamer as provided by an embodiment of the present invention;

fig. 3 is a schematic structural view of a conventional flow path reamer.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parts throughout or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, an indirect connection via an intermediary, a communication between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Referring to fig. 1 and 2, the preferred embodiment provides a flow channel reamer, which includes a main shaft 1 and a conical main body 2 disposed on the main shaft 1, wherein a plurality of spiral flow channel grooves 3 are disposed on a conical surface of the conical main body 2 from a top to a bottom, and three flow channel grooves 3 are exemplified here. A spiral line type working surface 4 is formed on the non-grooved conical surface, a plurality of cutter heads 5 which are arranged according to a spiral line type are welded on the working surface 4, and a plurality of convex blocks 6 are arranged on the area, on which the cutter heads 5 are not arranged, of the working surface 4.

Wherein, the lug 6 is preferably half sphere shape to neatly arrange according to the helix type, and tool bit 5 arranges along the border of working face 4, and each lug 6 is located the homonymy of tool bit 5.

Because the conical main body 2 is a casting, the runner groove 3 and the lug 6 on the conical main body can be integrally cast, the forming is convenient, and the key problem is solved.

In conclusion, the runner reamer effectively improves the abrasion condition of the working face by adding the lug design on the working face of the existing reamer, helps sand grains and scrap iron to be guided to the runner groove, improves certain chip removal capacity, is simple to modify, does not influence the performance of the original reamer, and is effective and practical.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but is capable of various modifications and changes without departing from the spirit and scope of the utility model, which are intended to be within the scope of the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The runner reamer is characterized by comprising a main shaft and a conical main body arranged on the main shaft, wherein a plurality of spiral-line-type runner grooves are formed in the conical surface of the conical main body from the conical top to the conical bottom, a spiral-line-type working surface is formed on the non-grooved conical surface, a plurality of cutter heads arranged according to the spiral line type are welded on the working surface, and a plurality of convex blocks are arranged in an area, on which the cutter heads are not arranged, of the working surface.

2. The flow channel reamer of claim 1, wherein: the convex blocks are in a semi-sphere shape and are arranged neatly according to a spiral line type.

3. The flow channel reamer of claim 1, wherein: the tool bits are arranged along the edge of the working surface, and the convex blocks are located on the same side of the tool bits.

4. The flow channel reamer of claim 1, wherein: the conical main body is a casting, and the runner groove and the lug on the conical main body are integrally cast.