CN205259950U

CN205259950U - Non - excavation enlarger

Info

Publication number: CN205259950U
Application number: CN201520935208.2U
Authority: CN
Inventors: 李春龙
Original assignee: Beijing Tongcheng Industrial Equipment Co Ltd
Current assignee: Beijing Tongcheng Industrial Equipment Co Ltd
Priority date: 2015-11-21
Filing date: 2015-11-21
Publication date: 2016-05-25
Anticipated expiration: 2025-11-21

Abstract

The utility model discloses a non - excavation enlarger, enlarger body be including direction pouring portion, direction pouring portion is provided with reaming direction working face and pouring work face and inside being provided with rather than the communicating potting channel of the plug hole on surface on the surface, reaming direction working face and pouring work face all are provided with a plurality of breaing up a little along the axial of enlarger body, and this a plurality of breaing up is a little followed levogyration orientation and the setting of dextrorotation orientation respectively and is formed with the anticlockwise spiral line segment that is the rotatory clockwise spiral line segment of clockwise and is anti -clockwise, and just clockwise spiral line segment sets up with anticlockwise the spiral line segment is crisscross. It is difficult for expanded the hole partially by the influence of external power when the reaming, consolidate the pore wall, make the difficult landslide in hole.

Description

Non-excavation reamer

Technical field

The utility model relates to a kind of boring tool technical field, and more particularly, it relates to a kind of non-excavation reamer.

Background technology

Along with the development of fluid media (medium) pipeline conveying cause, river crossing, lake, highway, railway even the creeping into counterboring operation of conveyance conduit hole on mountain range are progressively increasing, and the use of passing through reamer is frequent all the more.

In non-excavation horizontal directional drilling pipe laying, soft formation boring reaming is generally used boring

Reamer: the joint of reamer left end adopts and is threaded with borer drill rod, has hydrophthalmia to be communicated with reaming body water route in joint. Reaming body is made up of baffle plate and shell and inner casing, and on its shell, welding-on has some cutting elements, and has hydrophthalmia. Joint and mandrel, engaging lug coaxial line are welded to connect, and whole reaming body also adopts welding to be connected with shafting components, and uses gusset reinforcement.

The conventional taper of shape of this class reamer body, spindle or bullet-headed, mainly carry out rotating-milling by the cutting element of installing on it and expand hole wall. Their ubiquity shortcomings are: 1. reamer self does not possess guidance capability, carry out reaming work at serpentine track boring or the drilling track bending section of non-excavation horizontal directional drilling pipe laying, can produce inclined to one side problem is expanded in hole; 2. reamer self only have cutting broken hole wall make the expansion capability of holing, and do not possess protection hole wall retaining capacity.

For a technical solution difficult problem, prior art notification number is that CN101701507B discloses a kind of reamer with extruding retaining wall function, it is characterized in that the front end of joint and mandrel and the front end of reamer housing are connected, there is support plate the rear end of reamer housing, reamer housing and mandrel are connected, polyhedron on center and the mandrel of support is axially moving joins merga pass bolt or/and alignment pin is fixed on mandrel, the spoke of support or wheel disc and support plate are hinged with some roller shafts two ends respectively, roller shaft coordinates with roller is moving, core back-end is connected with engaging lug, roller shaft two ends are connected with roller by bearing, there is sealing gland, the inwall of the center of support is regular hexahedron, regular hexahedron with its moving its profiling of mandrel Duan Weiyu coordinating, locknut is passed through in one end of support, the other end is fixed on mandrel by positioning sleeve and alignment pin, the hole of the hole of roller shaft right-hand member and the first hinged bearing is hinged by the first bearing pin, the first hinged bearing and support plate are connected, the hole of the hole of roller shaft left end and the second hinged bearing is hinged by the second bearing pin, the second hinged bearing has the dovetail groove of dovetail slide block and support to be slidably connected. but the reamer of this structure also can easily be subject to the impact of extraneous power to produce skew, also have general to the consolidation effect of hole wall.

Utility model content

One of the purpose of this utility model is to provide a kind of non-excavation reamer, and its impact that is not subject to extraneous power in the time of reaming is expanded hole partially.

Another kind of object of the present utility model is Reinforcing hole wall, makes hole be difficult for landslide.

For achieving the above object, the utility model provides following technical scheme: a kind of non-excavation reamer, comprise reamer body, it is characterized in that, described reamer body comprises guiding casting portion, is provided with reaming guiding working face and cast working face and inside and is provided with the cast passage that the plug hole surperficial with it communicates on described guiding casting portion surface; Described reaming guiding working face and cast working face are all axially provided with some break-up point along reamer body, these some break-up point are respectively along left hand direction and clockwise direction setting and be formed with and be right handed clockwise helical segment and be the counterclockwise counterclockwise helical segment of rotation, and helical segment is crisscross arranged with helical segment counterclockwise clockwise.

Existing reamer adopts to such an extent that be unidirectional screw thread, is soft soil layer if this reamer runs on one side in punching digging process, and another side is hard soil layer; It is in rotation when reaming, and the resistance that the resistance that hard soil layer is subject on one side can be subject to than soft soil layer is large, the large resistance of the guide end of reamer understand to slight drag while run, thereby cause reamer sideslip;

Adopt the technical program, in the guiding casting portion of this reamer, have staggered dextrorotation to helical segment and the counterclockwise helical segment of rotation counterclockwise; If it runs into is on one side soft soil layer, another side is the situation of hard soil layer; Reamer has revolving force and counterclockwise revolving force clockwise when rotated; The power that the drag effect of hard soil layer produces at guide end changes into the power of two strands of different directions, and just both cancel out each other; Therefore, ensured that the unaffected continuation of reamer keeps original track to advance.

Further limit, also include the reinforcing that smooths mud, Reinforcing hole wall and smooth portion; The diameter that described reinforcing smooths portion is greater than the diameter of the casting portion that leads.

Existing reamer, in the time that reaming is reinforced, is that mud is directly thrown on hole wall; Such 1, mud easily falls down from upper wall surface, and 2, mud solidifies rear hole wall surface out-of-flatness meeting and form projection (obstacle) one by one, brings inconvenience to later construction.

Adopt the technical program, the front end of reamer is guiding casting portion, and rear end is to reinforce the portion that smooths; Guiding casting portion is thrown to mud on hole wall on reaming limit, limit; The reinforcing portion of smoothing is one when it advances with the rotation of guiding casting portion, can apply active force than the bigger-sized cylinder of guiding casting portion to the mud of hole wall, and mud is bonded on hole wall more closely, the mud piece protruding is polished simultaneously; Make whole hole wall firmer and smooth.

Further limit, between break-up point and break-up point, interval arranges, and the 1-6 of the spacing between the two length that is break-up point doubly.

Existing unidirectional complete helical segment guiding earth, be difficult for broken up. Reason is that underground earth is to contain a lot of moisture (earth is very muddy), and reamer is in the time of reaming, and earth is divided into a rule, is guided away by helix; Because helix is complete, earth is also complete in spiral motion process;

The utility model so arranges, and the bidirectional screw line segment of reamer becomes desultory helical segment; Earth is in spiral motion process, and a part of earth can branch away and can from interval, be thrown out of, and is conducive to break up earth, construction after being convenient to.

Further limit the interval between every adjacent break-up point and depart from the track of the helix being formed by break-up point and be provided with transition break-up point.

So arrange, earth is broken up in process separated, goes out from interval; For the better effects if that makes to break up, transition break-up point is set, the effect that transition break-up point plays again and separates, breaks up at interval. And if it is arranged on the position parallel with break-up point (not in interval) to the effect that does not just have again and separate, breaks up.

Further limit, described break-up point is elongated; Two ends that are positioned at the break-up point on cast working face are all circular-arc.

So arrange, reaming guiding working face needs cutting, separates, and therefore the strip break-up point on its face has corner angle; And break-up point on cast working face has been mainly guiding function, therefore, it is designed to two circular-arc.

Further limit, in described transition break-up point, and in the direction with coming in, be provided with arc convex portion along reamer body rotation mud.

So arrange, arc convex portion is the main forced section of transition break-up point, and design is in order to expand lifting surface area like this, makes it not easy to wear; Adopt arc must play shunting action for better simultaneously.

Further limit, described cast passage includes narrow section and wider section, and described narrow section is positioned at the region of reaming guiding working face, described wider section of region that is positioned at cast working face.

Further limit, the aperture of the plug hole on described reaming guiding working face is less than the aperture of the plug hole on cast working face.

So arrange, the slurry channel of hole guiding working face has been that therefore, it does not need large discharge capacity, adopts narrow section passage and small-bore plug hole to being dried the lubricated of soil layer; The slurry channel of cast working face is to spray mud, Reinforcing hole wall to hole wall; Therefore, need large discharge capacity, adopt wider section of passage and heavy caliber plug hole.

Further limit, described reinforcing smooths portion and is wholely set with guiding casting portion, and the outer surface that this reinforcing smooths portion is shiny surface.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 be the dextrorotation that forms of the break-up point of the utility model embodiment to the structural representation of the helical segment of counterclockwise rotation direction;

Fig. 3 is the structural representation of the transition break-up point of the utility model embodiment;

Fig. 4 is the structural representation that the mud of the utility model embodiment is again broken up, shunted through transition break-up point.

Detailed description of the invention

Referring to figs. 1 through Fig. 4, the utility model embodiment is described further.

With reference to figure 1, a kind of non-excavation reamer, its reamer body 1 is divided into guiding casting portion 2 and reinforcing smooths portion 3. Guiding casting portion 2 smooths with reinforcing that portion 3 is integrally manufactured to be formed; The front end of guiding casting portion 2 is bullet, and its outer surface is reaming guiding working face 4; The rear end of guiding casting portion 2 is cylinder, and its outer surface is cast working face 5. Reinforcing smooths portion 3 and is fixed in the rearward end of guiding casting portion 2.

The inside of guiding casting portion 2 is provided with cast passage 8; Cast passage 8 communicates with the plug hole 9 on reaming guiding working face 4 and cast working face 5. Wherein, the aperture of the plug hole 9 of reaming guiding working face 4 is less than the aperture of the plug hole 9 on cast working face 5. Cast passage 8 is divided into narrow section 81 and wider section 82, and narrow section 81 is positioned at the region of reaming guiding working face 4, and wider section 82 is positioned at the region of cast working face 5. Being designed to such structure, is because the slurry channel of hole guiding working face has been that it does not need large discharge capacity, adopts narrow section 81 passages and small-bore plug hole 9 to being dried the lubricated of soil layer; And the slurry channel of cast working face 5 is to spray mud, Reinforcing hole wall to hole wall; Need large discharge capacity, adopt wider section of 82 passages and heavy caliber plug hole 9.

With reference to figure 2, reaming guiding working face 4 and cast working face 5 are all along the break-up point that is axially provided with some strips 6 of reamer body 1. These some break-up point 6 are respectively along left hand direction and clockwise direction setting and be formed with and be right handed clockwise helical segment a and be the counterclockwise counterclockwise helical segment b of rotation, and helical segment a is crisscross arranged with helical segment b counterclockwise clockwise.

In the guiding casting portion 2 of this reamer, have staggered dextrorotation to helical segment and the counterclockwise helical segment b of rotation counterclockwise; If it runs into is on one side soft soil layer, another side is the situation of hard soil layer; Reamer has revolving force and counterclockwise revolving force clockwise when rotated; The power that the drag effect of hard soil layer produces at guide end changes into the power of two strands of different directions, and just both cancel out each other; Therefore, ensured that the unaffected continuation of reamer keeps original track to advance.

Wherein, reaming guiding working face 4 needs cutting, separates, and therefore the strip break-up point 6 on its face has corner angle. And the break-up point 6 of cast on working face 5 has been mainly guiding function, therefore, it is designed to two circular-arc.

Wherein, between break-up point 6 and break-up point 6, interval arranges, and spacing be between the two break-up point 6 length 1-6 doubly. Break-up point 6 project organizations are in order to allow the bidirectional screw line segment of reamer become desultory helical segment; Earth is in spiral motion process, and a part of earth can branch away and can from interval, be thrown out of, and is conducive to break up earth, construction after being convenient to.

Further improve break up, separating effect. Interval between every adjacent break-up point 6 and depart from the track of the helix being formed by break-up point 6 and be provided with transition break-up point 10. See Fig. 3, in transition break-up point 10, and rotate mud along reamer body 1 and in the direction with coming in, be provided with arc convex portion 101. Arc convex portion 101 is main forced sections of transition break-up point 10. With reference to figure 4, design is in order to expand lifting surface area like this, makes it not easy to wear; Adopt arc must play shunting action for better simultaneously.

It is for smoothing mud, Reinforcing hole wall that reinforcing smooths portion 3. The outer surface that this reinforcing smooths portion 3 is shiny surface. The diameter that reinforcing smooths portion 3 is greater than the diameter of the casting portion 2 that leads. The guiding casting portion 2 of reamer is thrown to mud on hole wall on reaming limit, limit; It is the bigger-sized cylinders of ratio guiding casting portion 2 that reinforcing smooths portion 3, when it advances with 2 rotations of guiding casting portion, can apply active force to the mud of hole wall, and mud is bonded on hole wall more closely, the mud piece protruding is polished simultaneously; Make whole hole wall firmer and smooth.

The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model. It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a non-excavation reamer, comprise reamer body, it is characterized in that, described reamer body comprises guiding casting portion, is provided with reaming guiding working face and cast working face and inside and is provided with the cast passage that the plug hole surperficial with it communicates on described guiding casting portion surface; Described reaming guiding working face and cast working face are all axially provided with some break-up point along reamer body, these some break-up point are respectively along left hand direction and clockwise direction setting and be formed with and be right handed clockwise helical segment and be the counterclockwise counterclockwise helical segment of rotation, and helical segment is crisscross arranged with helical segment counterclockwise clockwise.

2. non-excavation reamer according to claim 1, is characterized in that, also includes the reinforcing that smooths mud, Reinforcing hole wall and smooths portion; The diameter that described reinforcing smooths portion is greater than the diameter of the casting portion that leads.

3. non-excavation reamer according to claim 1, is characterized in that, between break-up point and break-up point, interval arranges, and the 1-6 of the spacing between the two length that is break-up point doubly.

4. non-excavation reamer according to claim 3, is characterized in that, the interval between every adjacent break-up point and depart from the track of the helix being made up of break-up point and be provided with transition break-up point.

5. non-excavation reamer according to claim 3, is characterized in that, described break-up point is elongated; Two ends that are positioned at the break-up point on cast working face are all circular-arc.

6. non-excavation reamer according to claim 4, is characterized in that, in described transition break-up point, and in the direction with coming in, is provided with arc convex portion along reamer body rotation mud.

7. according to the non-excavation reamer described in claim 1 or 5 or 6, it is characterized in that, described cast passage includes narrow section and wider section, and described narrow section is positioned at the region of reaming guiding working face, described wider section of region that is positioned at cast working face.

8. non-excavation reamer according to claim 7, is characterized in that, the aperture of the plug hole on described reaming guiding working face is less than the aperture of the plug hole on cast working face.

9. non-excavation reamer according to claim 2, is characterized in that, described reinforcing smooths portion and is wholely set with guiding casting portion, and the outer surface that this reinforcing smooths portion is shiny surface.