CN113914778A

CN113914778A - Reamer with replaceable reaming size

Info

Publication number: CN113914778A
Application number: CN202111279052.3A
Authority: CN
Inventors: 顾德哲; 王丙奎; 蒋鑫; 王刚; 田梅; 王金涛; 陈兴明; 薛冠男; 耿百利; 王卫
Original assignee: China Oil and Gas Pipeline Network Corp; Pipechina Eastern Crude Oil Storage and Transportation Co Ltd
Current assignee: China Oil and Gas Pipeline Network Corp; Pipechina Eastern Crude Oil Storage and Transportation Co Ltd
Priority date: 2021-10-31
Filing date: 2021-10-31
Publication date: 2022-01-11

Abstract

The invention discloses a reamer with replaceable reaming size, and belongs to the technical field of trenchless pipeline construction. The reamer comprises a reamer base body and a replaceable reaming size cutter head, wherein the replaceable reaming size cutter head is sleeved on the reamer base body and is fixed through a cutter head fixing screw. The invention can quickly take down the replaceable reaming size cutter head to replace the replaceable reaming size cutter head with other sizes, does not need to disassemble the base body of the reamer and saves the construction cost for the construction side.

Description

Reamer with replaceable reaming size

Technical Field

The invention relates to a reamer with the size convenient to replace, and belongs to the technical field of trenchless pipeline construction.

Background

At present, in the non-excavation trade, before trusteeship construction, to carry out reaming many times to the bottom hole, the change that reams the size will carry out many times, so will prepare multiple size enlarger, need open reamer both ends screw thread at the in-process of changing the enlarger, during the assembly of many times screw thread, cause the damage of screw thread easily, especially connecting thread bears huge counter torque when enlarger reams, causes the damage of screw thread more easily during the dismantlement.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the reamer with the replaceable reaming size, which can quickly replace the bit leg and adjust the reaming size, so that the construction cost is reduced.

The invention is realized by the following technical scheme: the utility model provides a reamer of removable reaming size, includes reamer base member and interchangeable reaming size blade disc, install a plurality of removable hands through releasable connection on the interchangeable reaming size blade disc, have the driving groove in the middle of the interchangeable reaming size blade disc, have in the middle of the reamer base member with the driving tooth of driving groove adaptation, interchangeable reaming size blade disc passes through driving groove and driving tooth cover are established on the reamer base member, the reamer base member is the axle shape and runs through interchangeable reaming size blade disc, fix through a plurality of blade disc set screws between reamer base member and the interchangeable reaming size blade disc.

The replaceable reaming size cutter head comprises a front sealing plate, a supporting plate, a rear cover plate, a bit leg base, a replaceable bit leg and a bit leg fixing screw, wherein a middle hole of the front sealing plate is in sealing connection with the reamer base body through a sealing ring; the middle of the rear cover plate is provided with the transmission groove which is sleeved with the transmission teeth, and the cutter head fixing screw penetrates through the front sealing plate and the rear cover plate simultaneously and is in threaded connection with the base body of the reamer;

the utility model discloses a tooth's palm base, including preceding shrouding, curb plate, removable bit palm and bit palm base, the border of preceding shrouding has the bit palm mounting groove with removable bit palm quantity adaptation, have the bit palm groove bottom plate that corresponds with the bit palm mounting groove on the back shroud, be equipped with between preceding shrouding and the back shroud the backup pad, the backup pad comprises the curb plate at an arc and arc both ends, and the curb plate forms bit palm installation space with bit palm mounting groove and bit palm tank bottom plate, in the bit palm installation space is packed into to the bit palm base, the lower extreme of removable bit palm inserts in the bit palm base, the preparation has the connecting hole on curb plate, removable bit palm and the bit palm base, bit palm set screw will through these connecting holes curb plate, removable bit palm and bit palm base are fixed together.

The transmission groove is a hexagonal groove in a regular hexagon, and the transmission teeth are hexagonal transmission teeth in a regular hexagon.

The size of the replaceable bit leg is selected from 8.5-17.5 inches.

And a water channel is arranged on the reamer substrate.

The invention has the beneficial effects that: compared with the common reamer, the reamer adopts a mode of welding and fixing the bit leg, adopts a detachable and replaceable mode to fix the bit leg, and can quickly replace the bit leg by detaching the bit leg fixing screw; and after the reaming work is finished, the cutter heads with various sizes can be quickly replaced by disassembling the transmission grooves, the transmission teeth and the cutter head fixing screws.

Drawings

The invention is further illustrated below with reference to the figures and examples.

Fig. 1 is a block diagram of an interchangeable underreamer of the present invention;

FIG. 2 is a sectional view of the connection of the driving groove and the driving tooth;

FIG. 3 is a water channel position view of the underreamer base;

fig. 4 is a view of the position of the port.

In the drawing, (1) a replaceable bit leg, (2) a cutter head fixing screw, (3) a front sealing plate, (3-1) a bit leg mounting groove, (4) a bit leg fixing screw, (5) a bit leg base, (6) a supporting plate, (6-1) an arc plate, (6-2) a side plate, (7) a rear cover plate, (7-1) a bit leg groove bottom plate, (8) a reamer base, (9) a replaceable reaming size cutter head, (10) a transmission groove, and (11) transmission teeth.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail but are intended to be part of the specification as appropriate.

As shown in fig. 1-4, a reamer of removable reaming size, including reamer base member 8 and interchangeable reaming size blade disc 9, install a plurality of removable bit palms 1 through releasable connection on the interchangeable reaming size blade disc 9, there is driving groove 10 in the middle of the interchangeable reaming size blade disc 9, have in the middle of the reamer base member 8 with driving tooth 11 of driving groove 10 adaptation, interchangeable reaming size blade disc 9 passes through driving groove 10 and driving tooth 11 cover are established on the reamer base member 8, reamer base member 8 is the axle shape and runs through interchangeable reaming size blade disc 9, fix through a plurality of blade disc set screws 2 between reamer base member 8 and the reaming interchangeable size blade disc 9.

The cutter head 9 with the changeable reaming size comprises a front sealing plate 3, a supporting plate 6, a rear cover plate 7, a bit leg base 5, a replaceable bit leg 1 and a bit leg fixing screw 4, wherein a middle hole of the front sealing plate 3 is in sealing connection with the reamer base body 8 through a sealing ring; the middle of the rear cover plate 7 is provided with the transmission groove 10 which is sleeved with the transmission teeth 11, and the cutter head fixing screw 2 simultaneously penetrates through the front sealing plate 3 and the rear cover plate 7 and is in threaded connection with the reamer base body 8;

the replaceable bit leg comprises a front sealing plate 3, a replaceable bit leg base plate 7-1, a bit leg groove bottom plate 7-1 and a supporting plate 6, wherein the number of the bit leg groove bottom plate is matched with that of the replaceable bit leg 1, the number of the bit leg groove bottom plate 7-1 is matched with that of the bit leg groove bottom plate 7-1, the supporting plate 6 is composed of an arc-shaped plate 6-1 and side plates 6-2 at two ends of the arc-shaped plate 6-1, the side plates 6-2, the replaceable bit leg base plate 3-1 and the bit leg groove bottom plate 7-1 form a bit leg installation space, the bit leg base 5 is arranged in the bit leg installation space, the lower end of the replaceable bit leg 1 is inserted into the bit leg base 5, connecting holes are formed in the side plates 6-2, the replaceable bit leg base 1 and the replaceable bit leg base 5, and the bit leg fixing screws 4 fix the side plates 6-2, Replaceable bit leg 1 and bit leg base 5 are fixed together.

The sizes of the three parts are confirmed by the front sealing plate, the supporting plate and the rear cover plate according to the size of each reaming; the desired size of replaceable bit leg 1 is selected between 8.5-17.5 inches. Determining the size of the palm according with requirements according to the reaming size of each time; the bit leg base is determined according to the size of the bit leg meeting the requirement.

The drive groove 10 is a hexagonal groove of a regular hexagon, and the drive teeth 11 are hexagonal drive teeth of a regular hexagon.

The underreamer base body 8 is provided with a water channel, as can be seen in fig. 3-4. The water channel can reduce the heat generated when the roller cone breaks rocks and erode rock debris on the surface of the roller cone.

The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reamer with replaceable reaming dimensions, comprising:

including enlarger base member (8) and interchangeable reaming size blade disc (9), install a plurality of removable bit hands (1) through releasable connection on interchangeable reaming size blade disc (9), there are driving groove (10) in the middle of interchangeable reaming size blade disc (9), have in the middle of enlarger base member (8) with driving tooth (11) of driving groove (10) adaptation, interchangeable reaming size blade disc (9) are passed through driving groove (10) and driving tooth (11) cover are established on enlarger base member (8), enlarger base member (8) are the axle shape and run through interchangeable reaming size blade disc (9), fix through a plurality of blade disc set screw (2) between enlarger base member (8) and the interchangeable reaming size blade disc (9).

2. The replaceable reaming size reamer of claim 1, wherein:

the cutter head (9) with the changeable reaming size comprises a front sealing plate (3), a supporting plate (6), a rear cover plate (7), a bit leg base (5), a replaceable bit leg (1) and a bit leg fixing screw (4), wherein a middle hole of the front sealing plate (3) is in sealing connection with the reamer base body (8) through a sealing ring; the middle of the rear cover plate (7) is provided with the transmission groove (10) which is sleeved with the transmission teeth (11), and the cutter head fixing screw (2) simultaneously penetrates through the front sealing plate (3) and the rear cover plate (7) and is in threaded connection with the reamer base body (8);

the peripheral edge of the front sealing plate (3) is provided with palm mounting grooves (3-1) matched with the replaceable palm (1) in number, the rear cover plate (7) is provided with a palm groove bottom plate (7-1) corresponding to the palm mounting grooves (3-1), the supporting plate (6) is arranged between the front sealing plate (3) and the rear cover plate (7), the supporting plate (6) is composed of an arc-shaped plate (6-1) and side plates (6-2) at two ends of the arc-shaped plate (6-1), the side plates (6-2), the palm mounting grooves (3-1) and the palm groove bottom plate (7-1) form a palm mounting space, the palm base (5) is arranged in the palm mounting space, the lower end of the replaceable palm (1) is inserted into the palm base (5), and the side plates (6-2), the replaceable palm (1) and the palm base (5) are provided with connecting holes, the bit leg fixing screws (4) fix the side plates (6-2), the replaceable bit leg (1) and the bit leg base (5) together through the connecting holes.

3. The replaceable reaming size reamer of claims 1 or 2, wherein: the transmission groove (10) is a hexagonal groove in a regular hexagon, and the transmission teeth (11) are hexagonal transmission teeth in a regular hexagon.

4. The replaceable reaming size reamer of claims 1 or 2, wherein: the size of the replaceable bit leg (1) is selected from 8.5-17.5 inches.

5. The replaceable reaming size reamer of claims 1 or 2, wherein: and a water channel is arranged on the reamer base body (8).