CN208010284U - Under water with pipe hole-forming device - Google Patents

Abstract

The utility model provides one kind under water with pipe hole-forming device, including high pneumatic dth drill, and the drilling rod of high pneumatic dth drill is connect with off-balance bit；In the off-balance bit, eccentric bit ring set is connected in drill bit shaft, and outer ring is equipped on eccentric jumping through rings and releases slot and outer ring withdrawal slot, inner ring release slot is equipped in drill bit shaft and inner ring withdraws slot；The rotatable outer ring that is mounted on of first rolling element is released between slot and inner ring release slot, and the second rolling element is rotatable to be withdrawn mounted on outer ring withdrawal slot and inner ring between slot.Efficient, accurate underwater drilling in construction of explosion under water may be implemented in the utility model, shorten the underwater drilling period in extensive underwater demolition, off-balance bit structure, influence of the inhomogeneities medium to drilling quality can be overcome, the composite structure of the unique release slot, withdrawal slot and rolling element that are arranged, influence of the severe execution conditions to drill bit is reduced, the probability that bit freezing and drill bit fall off is reduced.

Description

Under water with pipe hole-forming device

Technical field

The utility model is related to drillhole blasting construction fields, and especially one kind is under water with pipe hole-forming device.

Background technology

Currently, it is common it is underwater drilled using geological drilling rig or 100B down-the-hole drills with pipe pore-forming, drilling effect Rate is relatively low, and general construction efficiency is 5m~8m/ classes.Drilling machine dead weight is small, when backfilling rock ballast internal drilling, due to medium Inhomogeneities causes drilling machine to be easy displacement, causes to be broken with pipe.

Existing off-balance bit, generally use cam structure carries out state switching, the problem is that because by adverse circumstances It influences, is susceptible to bit freezing even drill bit the phenomenon that falling off.

Utility model content

The technical problem to be solved by the utility model is to provide one kind under water with pipe hole-forming device, can overcome medium The influence that inhomogeneities is brought accurately, efficiently carries out underwater drilling.

In order to solve the above technical problems, technical solution used by the utility model is：It is a kind of under water with pipe hole-forming device, Including high pneumatic dth drill, the drilling rod of high pneumatic dth drill is connect with off-balance bit；

In the off-balance bit, eccentric bit ring set is connected in drill bit shaft, on eccentric jumping through rings be equipped with outer ring release slot and Slot is withdrawn in outer ring, and inner ring is equipped in drill bit shaft and releases slot and inner ring withdrawal slot；

The rotatable outer ring that is mounted on of first rolling element is released between slot and inner ring release slot, and the second rolling element is rotatable Slot is withdrawn mounted on outer ring and inner ring is withdrawn between slot.

In preferred scheme, slot is released in the outer ring, inner ring releases slot, slot is withdrawn in outer ring and inner ring withdraws slot and serves as reasons The shallow involute slot to depth.

In preferred scheme, slot is released in outer ring, inner ring releases slot, slot is withdrawn in outer ring and inner ring withdraws the position of slot circumferentially It sets, makes drill bit shaft when rotating in one direction, eccentric jumping through rings and drill bit shaft are eccentric, and when being rotated towards other direction, eccentric bit Ring is concentric with drill bit shaft.

In preferred scheme, the eccentric jumping through rings is two, and two eccentric jumping through rings are axially disposed.

In preferred scheme, it is installed with fixed core ring in the sliding rail lower end of high pneumatic dth drill, fixed core ring is equipped with for steel bushing Pipe across pilot hole.

In preferred scheme, the gap between steel sleeve and pilot hole is 0.2 ~ 0.5mm.

In preferred scheme, the model CM351 of high pneumatic dth drill.

In preferred scheme, first rolling element and the second rolling element are steel ball or steel column.

One kind provided by the utility model may be implemented efficient, accurate in construction of explosion under water under water with pipe hole-forming device True underwater drilling, separate unit CM351 underwater drillings efficiency substantially reduce extensive underwater demolition and make up to 150m-200m/ classes Underwater drilling period in industry, the off-balance bit structure of use can effectively overcome influence of the inhomogeneities medium to drilling quality, The composite structure of the unique release slot, withdrawal slot and rolling element that are arranged, sliding before is pushed, and is converted to rolling and is pushed, Influence of the severe execution conditions to drill bit is greatly reduced, reduces the probability that bit freezing and drill bit fall off.Bore angle can be in 45o~90 It is arbitrarily adjusted within the scope of o, is suitable for the underwater inclination blast hole of the overwhelming majority.The utility model is particularly suitable for boring quick-fried platform method Underwater Large-scale blasting, certain the utility model are equally applicable to the underwater Large-scale blasting using other stabilized platforms, effectively The construction efficiency for improving underwater drilling, solve the problems, such as extensive underwater demolition drilling cycle length.

Description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and examples：

Fig. 1 is the schematic diagram that off-balance bit drills in the utility model.

Fig. 2 is that steel sleeve follows drilling to the schematic diagram of basement rock in the utility model.

Fig. 3 is the schematic diagram that normal drill bit drilling is replaced in the utility model to predeterminated position.

Fig. 4 is the schematic diagram for taking out drill bit in the utility model and installing PVC casings.

Fig. 5 is the schematic diagram that steel sleeve is transferred in the utility model.

Fig. 6 is the schematic diagram with pipe pore-forming in the utility model.

Fig. 7 is the structural schematic diagram of off-balance bit in the utility model.

Fig. 8 is structural schematic diagram when off-balance bit works in the utility model.

Fig. 9 is the A-A schematic cross-sectional views of Fig. 8.

In figure：High pneumatic dth drill 1, fixed core ring 11, normal drill bit 12, off-balance bit 13, orientating device 131, eccentric bit Slot 136 is released in ring 132, center bit 133, chip space 134, the first rolling element 135, the second rolling element 1351, outer ring, and inner ring pushes away Go out slot 137, inner ring withdraws slot 138, and slot 139 is withdrawn in outer ring, drill bit shaft 130, steel sleeve 2, underwater placement body 3, primitively upper thread 4, basement rock 5, PVC casings 6, hydraulic tube drawing bench 7, drilling basement rock depth L.

Specific implementation mode

Embodiment 1：

It is a kind of under water with pipe hole-forming device, including high pneumatic dth drill 1 in Fig. 1 ~ 9, high pneumatic dth drill 1 Drilling rod is connect with off-balance bit 13；

In the off-balance bit 13, eccentric jumping through rings 132 is socketed in drill bit shaft 130, is equipped on eccentric jumping through rings 132 outer Circle releases slot 136 and slot 139 is withdrawn in outer ring, and inner ring release slot 137 is equipped in drill bit shaft 130 and inner ring withdraws slot 138；

In Fig. 9, the 135 rotatable outer ring that is mounted on of the first rolling element is released between slot 136 and inner ring release slot 137, Second rolling element, the 1351 rotatable outer ring that is mounted on is withdrawn between slot 139 and inner ring withdrawal slot 138.Thus structure, use 13 structure of off-balance bit can overcome the non-uniform influence of medium, can be substantially using the structure for pushing eccentric jumping through rings 132 is rolled Frictional force is reduced, avoids the occurrence of bit freezing or the problem of drill bit falls off.

In preferred scheme such as Fig. 9, slot 136 is released in the outer ring, inner ring releases slot 137, slot 139 is withdrawn in outer ring and interior It is involute slot from shallow to deep that circle, which withdraws slot 138,.Thus structure, make eccentric jumping through rings 132 release and recovery movement more Uniformly.

In preferred scheme such as Fig. 7,8, slot 136 is released in outer ring, inner ring releases slot 137, slot 139 is withdrawn in outer ring and inner ring is received The position of return-enclosure 138 circumferentially, makes drill bit shaft 130 when rotating in one direction, and eccentric jumping through rings 132 is inclined with drill bit shaft 130 The heart, and when being rotated towards other direction, eccentric jumping through rings 132 and drill bit shaft 130 are concentric.

In preferred scheme such as Fig. 8, the eccentric jumping through rings 132 is two, and two eccentric jumping through rings 132 are axially disposed. Thus structure can further increase drilling efficiency.

In preferred scheme, it is installed with fixed core ring 11 in the sliding rail lower end of high pneumatic dth drill 1, fixed core ring 11, which is equipped with, to be supplied The pilot hole that steel sleeve 2 passes through.Thus structure can preferably control the direction of steel sleeve 2.

In preferred scheme, the gap between steel sleeve 2 and pilot hole is 0.2 ~ 0.5mm.

In preferred scheme, the model CM351 of high pneumatic dth drill 1.

Embodiment 2：

In Fig. 1 ~ 9, one kind includes the following steps under water with pipe forming hole method：

S1, drilling setting-out, including tapping point, hole depth, bore angle.Using high pneumatic dth drill 1, filling body under water Steel sleeve 2 is coordinated to creep into using off-balance bit 13 in 3；In preferred scheme, the model CM351 of high pneumatic dth drill 1.This Underwater placement body 3 in example is rock ballast body.As shown in fig. 1.The off-balance bit 13 of use can be good at overcoming medium not Uniformly to the influence of drilling.In preferred scheme, the dilling angle of high pneumatic dth drill 1 is 45 ° ~ 90 °.In work progress In, bore angle is controlled by compass, plumb bob etc. at any time.

In preferred scheme, the quick-fried platform of brill on filling body 3 under water is arranged in the high pneumatic dth drill 1.

In preferred scheme, it is installed with fixed core ring 11 in the sliding rail lower end of high pneumatic dth drill 1, fixed core ring 11, which is equipped with, to be supplied The pilot hole that steel sleeve 2 passes through, the gap between steel sleeve 2 and pilot hole are 0.2 ~ 0.5mm.The fixed core ring 11 of setting can be compared with The direction of good control steel sleeve 2.In Fig. 1,2.

The fixed core ring is made using steel plate, and fixed core ring is welded on the sliding rail lower end of high pneumatic dth drill 1.

In s2, such as Fig. 3, after steel sleeve 2 enters basement rock 5, high pneumatic dth drill 1, which is changed to normal drill bit 12, to be continued to creep into To design altitude, drilling rod and normal drill bit 12 are taken out；

In preferred scheme, the depth that the steel sleeve 2 enters basement rock 5 is 1m ~ 2m.Hole is steady in guarantee rock ballast body It is fixed, prevent rock ballast body and basement rock junction from caving in.

In s3, such as Fig. 4, after the completion of drilling, drilling rod is taken out, the installation PVC casings 6 in steel sleeve 2；In preferred scheme, The depth of PVC casings 6 is identical as the depth of steel sleeve 2.The PVC sleeve outers are smaller compared with steel bushing bore, but must be more than medicine Packet outer diameter 2cm or more, to ensure that powder charge is smooth.

S4, as shown in Figure 5, steel sleeve 2 is extracted with hydraulic tube drawing bench 7；

By above step realize under water bore quick-fried operation with pipe pore-forming.

In the prior art, off-balance bit 13 is by positive and negative rotation, to control opening and the contraction of drill bit, due to ring of constructing under hole Border is more severe, bit freezing often occurs, eccentric jumping through rings is received not back and the problem of off-balance bit falls off.

Preferred side is as in Fig. 7 ~ 9, and in the off-balance bit 13, eccentric jumping through rings 132 is socketed in drill bit shaft 130, Eccentric jumping through rings 132 is equipped with outer ring and releases slot 136 and outer ring withdrawal slot 139, and being equipped with inner ring in drill bit shaft 130 releases slot 137 Slot 138 is withdrawn with inner ring；

First rolling element, the 135 rotatable outer ring that is mounted on is released between slot 136 and inner ring release slot 137, and second rolls The rotatable outer ring that is mounted on of body 1351 is withdrawn between slot 139 and inner ring withdrawal slot 138.135 He of the first rolling element in this example Second rolling element 1351 is steel column or steel ball.

In preferred scheme such as Fig. 9, slot 136 is released in the outer ring, inner ring releases slot 137, slot 139 is withdrawn in outer ring and interior It is involute slot from shallow to deep that circle, which withdraws slot 138,；

Slot 136 is released in outer ring, inner ring releases slot 137, slot 139 is withdrawn in outer ring and inner ring withdraws the position of slot 138 circumferentially It sets, makes drill bit shaft 130 when rotating in one direction, eccentric jumping through rings 132 is eccentric with drill bit shaft 130, and is rotated towards other direction When, eccentric jumping through rings 132 and drill bit shaft 130 are concentric.Using this structure, sliding friction in the prior art is driven into eccentric jumping through rings 132 opening and contraction are changed into steel column by rolling or steel ball to drive, and significantly reduce the probability of bit freezing.In drilling process In, the piston impact orientating device 131 of impactor, impactor drives impactor to rotate by spline rod, when drill bit shaft 130 therewith just To when rotation, outer ring releases the first rolling element 135 that slot 136 and inner ring are released in slot 137 and is rolled to relatively narrow position, and inner ring is received The second rolling element 1351 that return-enclosure 138 and outer ring are withdrawn in slot 139 is rolled to wider position, makes eccentric jumping through rings 132 radially Displacement, eccentric jumping through rings 132 open up into except the outer diameter of steel sleeve 2, realize ream operation.When drill bit shaft 130 rotates backward, outside Circle releases the first rolling element 135 that slot 136 and inner ring are released in slot 137 and is rolled to wider position, and inner ring withdraws slot 138 and outer The second rolling element 1351 that circle is withdrawn in slot 139 is rolled to relatively narrow position, and eccentric jumping through rings 132 withdraws coaxial with drill bit shaft 130.

The above embodiments are only the optimal technical scheme of the utility model, and are not construed as the limit for the utility model System, the technical characteristic described in the utility model can be combined with each other use under the premise of not conflicting, the utility model Technical characteristic is equal in the technical solution that protection domain should be recorded with claim, including the technical solution of claim record Alternative is protection domain.Equivalent replacement i.e. within this range is improved, and is also within the protection scope of the utility model.

Claims (8)

1. one kind is under water with pipe hole-forming device, including high pneumatic dth drill（1）, it is characterized in that：High pneumatic dth drill（1）'s Drilling rod and off-balance bit（13）Connection；

The off-balance bit（13）In, eccentric jumping through rings（132）It is socketed in drill bit shaft（130）On, in eccentric jumping through rings（132）On set There is outer ring to release slot（136）Slot is withdrawn with outer ring（139）, in drill bit shaft（130）It is equipped with inner ring and releases slot（137）It is received with inner ring Return-enclosure（138）；

First rolling element（135）Release slot in the rotatable outer ring that is mounted on（136）Slot is released with inner ring（137）Between, the second rolling Kinetoplast（1351）Slot is withdrawn in the rotatable outer ring that is mounted on（139）Slot is withdrawn with inner ring（138）Between.

2. it is according to claim 1 a kind of under water with pipe hole-forming device, it is characterized in that：Release slot in the outer ring（136）, Inner ring releases slot（137）, outer ring withdraw slot（139）Slot is withdrawn with inner ring（138）It is involute slot from shallow to deep.

3. it is according to claim 1 or 2 a kind of under water with pipe hole-forming device, it is characterized in that：Release slot in outer ring（136）, it is interior Circle releases slot（137）, outer ring withdraw slot（139）Slot is withdrawn with inner ring（138）Position circumferentially, makes drill bit shaft（130） When rotating in one direction, eccentric jumping through rings（132）With drill bit shaft（130）Bias, and when being rotated towards other direction, eccentric jumping through rings （132）With drill bit shaft（130）With one heart.

4. it is according to claim 1 a kind of under water with pipe hole-forming device, it is characterized in that：The eccentric jumping through rings（132）For Two, two eccentric jumping through rings（132）It is axially disposed.

5. it is according to claim 1 a kind of under water with pipe hole-forming device, it is characterized in that：In high pneumatic dth drill（1）'s Sliding rail lower end is installed with fixed core ring（11）, fixed core ring（11）Equipped with for steel sleeve（2）The pilot hole passed through.

6. it is according to claim 5 a kind of under water with pipe hole-forming device, it is characterized in that：Steel sleeve（2）Between pilot hole Gap be 0.2 ~ 0.5mm.

7. it is according to claim 1 a kind of under water with pipe hole-forming device, it is characterized in that：High pneumatic dth drill（1）Type Number be CM351.

8. it is according to claim 1 a kind of under water with pipe hole-forming device, it is characterized in that：First rolling element（135） With the second rolling element（1351）For steel ball or steel column.