CN216477154U

CN216477154U - Power head assembly of rotary drilling rig capable of coring by rope

Info

Publication number: CN216477154U
Application number: CN202122823178.4U
Authority: CN
Inventors: 尹业新; 陈亮; 杨振峰
Original assignee: Nanjing Yi Run Environmental Technology Co ltd
Current assignee: Nanjing Yi Run Environmental Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-05-10
Anticipated expiration: 2031-11-17

Abstract

The utility model belongs to the technical field of power heads of rotary drilling rigs, and particularly relates to a power head assembly for a rotary drilling rig capable of coring by a rope. The utility model comprises a shell, a driving shaft penetrating in the shell, an upper bearing gland and a lower bearing gland, wherein the upper bearing gland and the lower bearing gland are sleeved on the driving shaft and used for preventing the driving shaft from radially jumping; one end of the driving shaft is in transmission connection with an output end key of the hydraulic motor, and the other end of the driving shaft is fixedly connected with one end of the drill rod connector; the drilling rod is installed to the other end of drilling rod connector, and the pot head that the driving shaft stretches out the casing is equipped with the protective sheath, and the protective sheath overcoat is equipped with the abrasionproof sleeve. According to the utility model, the upper bearing gland and the lower bearing gland are adopted to prevent the driving shaft from moving in the radial direction, the stability is improved, the part of the driving shaft exposed out of the shell is provided with the protective sleeve and the anti-abrasion sleeve, and the protective sleeve rotates in the shell to replace the abrasion of the driving shaft in the rotating process, so that the service life of the power head assembly is greatly prolonged, and the failure rate and the maintenance cost are effectively reduced.

Description

Power head assembly of rotary drilling rig capable of coring by rope

Technical Field

The utility model belongs to the technical field of power heads of rotary drilling rigs, and particularly relates to a power head assembly for a rotary drilling rig capable of coring by a rope.

Background

The hydraulic rotary drilling rig is a construction machine suitable for environmental sampling hole-forming operation, is mainly used for the construction of anchoring holes, drain holes and grouting holes of landslide control projects of railways, highways, water conservancy and hydropower stations and dangerous rock anchoring projects of building foundation pits and the construction of supporting holes of tunnel pipe sheds, has the characteristics of high hole-forming speed, less pollution, strong maneuverability and the like, can carry out wet-digging operation under the condition of mud retaining walls by using a rotary drill bit, and can also carry out hole-digging operation after being matched with a hammer drill to drill hard strata, according to different properties of ore rocks, drill bits made of different materials can be used respectively, the principle is that a hydraulic motor is used for driving a power head assembly to drive a drill rod to realize rotary cutting of rock and soil of the drill tool, the drill bits act on bottom ore rocks under the action of axial force and rotary force of the drill rod, then a winch is used for hanging and installing a fisher, the drill bits are put into the drill tool, and drilled rock cores are taken out.

During operation, the power head assembly applies large torque to the drill rod and continuously impacts the drill rod, the drill rod enters the rock to generate deviation force, the shearing of the drill bit on the rock causes the speed to change along with the change of the resistance of the drill bit, high-amplitude and high-frequency vibration is brought to the drill rod, the deviation and the vibration are transmitted to the power head assembly through the drill rod, the power head assembly is very easy to break down or damage, and the reliability of the power head assembly is reduced. Therefore, the rotary drilling rig power head assembly with wear resistance, long service life and high stability needs to be researched.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects that a power head assembly in the prior art is easy to break down or damage, low in reliability, short in service life and not suitable for drill rods with different specifications, and provides the power head assembly for the wire-line coring rotary drilling rig, which is wear-resistant, long in service life, high in stability and suitable for the drill rods with different specifications.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a but be used for rope coring rotary drilling rig unit head subassembly which characterized in that: the device comprises a shell, a driving shaft penetrating through the shell, and an upper bearing gland and a lower bearing gland which are sleeved on the driving shaft and used for preventing the driving shaft from moving radially; the driving shaft is rotatably connected with the shell, the upper bearing gland is fixedly connected with the top end of the shell, and the lower bearing gland is fixedly connected with the bottom end of the shell; one end of the driving shaft is in transmission connection with an output end key of the hydraulic motor, and the other end of the driving shaft is fixedly connected with one end of the drill rod connector; the drilling rod is installed to the other end of drilling rod connector, the driving shaft stretches out one pot head of casing is equipped with the protective sheath, the protective sheath overcoat is equipped with the abrasionproof sleeve, the abrasionproof sleeve with lower bearing gland fixed connection, the protective sheath with the abrasionproof sleeve rotates to be connected.

Further, the shell is rotatably connected with a rack of the drilling machine through a connecting pin shaft.

Furthermore, a fixed pressing plate is fixed on the shell, and when the shell is adjusted to a proper position, the shell is fixedly connected with a rack of the drilling machine through the fixed pressing plate.

Furthermore, a water pipe connector is arranged on the anti-abrasion sleeve, and holes corresponding to the water pipe connector are formed in the driving shaft and the protective sleeve.

Furthermore, a lubricating oil groove for flexibly rotating the protective sleeve is formed in the anti-abrasion sleeve.

Further, the driving shaft is rotatably connected with the shell through a tapered roller bearing.

Furthermore, the driving shaft is hollow.

Furthermore, sealing rings are arranged in the upper bearing gland and the lower bearing gland.

The power head assembly of the rotary drilling rig capable of coring by using the rope has the beneficial effects that:

1. according to the utility model, the upper bearing gland and the lower bearing gland are adopted to prevent the driving shaft from moving in the radial direction, the stability is improved, the part of the driving shaft exposed out of the shell is provided with the protective sleeve and the anti-abrasion sleeve, and the protective sleeve rotates in the shell to replace the abrasion of the driving shaft in the rotating process, so that the service life of the power head assembly is greatly prolonged, and the failure rate and the maintenance cost are effectively reduced.

2. The drill rod is in threaded connection with the driving shaft through the drill rod connector, the drilling efficiency is guaranteed, the size and the weight of the whole power head assembly are reduced, when drill rods with different specifications are required to drill, only the corresponding drill rod connector needs to be replaced, simplicity and convenience are realized, the abrasion of the driving shaft due to frequent assembling and disassembling of the drill rods can be effectively reduced, and the service life of the driving shaft is prolonged.

3. The casing is fixed on the rack of the drilling machine through the fixing pressing plate, so that the stability of the power head assembly is greatly improved, the whole power head assembly runs reliably and stably, and the damage of the power head assembly caused by external vibration is effectively reduced.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is an overall structure of an embodiment of the present invention;

fig. 2 is a sectional view of the entire structure of the embodiment of the present invention.

In the figure, the device comprises a shell 1, a shell 2, a driving shaft 3, an upper bearing gland 4, a lower bearing gland 5, a drill rod connector 6, a protective sleeve 7, an anti-abrasion sleeve 8, a connecting pin shaft 9, a fixed pressing plate 10, a tapered roller bearing 11 and a water pipe connector.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

Fig. 1-2 show a specific embodiment of a power head assembly of a rotary drilling rig capable of coring by a rope, which comprises a housing 1, a driving shaft 2 penetrating into the housing 1, and an upper bearing gland 3 and a lower bearing gland 4 which are sleeved on the driving shaft 2 and used for preventing the driving shaft from radial movement; the driving shaft 2 is rotatably connected with the shell 1, the upper bearing gland 3 is fixedly connected with the top end of the shell 1, and the lower bearing gland 4 is fixedly connected with the bottom end of the shell 1; one end of the driving shaft 2 is in transmission connection with an output end key of the hydraulic motor, and the other end of the driving shaft is fixedly connected with one end of the drill rod connector 5; the other end of the drill rod connector 5 is provided with a drill rod, one end of the driving shaft 2, which extends out of the shell 1, is sleeved with a protective sleeve 6, the protective sleeve 6 is sleeved with an anti-abrasion sleeve 7, the anti-abrasion sleeve 7 is fixedly connected with the lower bearing gland 4, the protective sleeve 6 is rotatably connected with the anti-abrasion sleeve 7, and the driving shaft 2, which is exposed out of the shell 1, is sleeved with the protective sleeve 6 and the anti-abrasion sleeve 7 and is used for preventing the driving shaft 2 from being abraded; the hydraulic motor is fixed on the upper bearing gland 3 through a bolt and is used as a power end of the power head component, the top end of the driving shaft 2 is provided with an internal spline groove, the hydraulic motor is used for being matched with the output end of a hydraulic motor to complete power transmission, the lower end of the hydraulic motor is in threaded connection with a drill rod connector 5, a driving shaft 2 rotates in a shell 1 at a constant speed through tapered roller bearings 10 which are sleeved at the upper end and the lower end of the driving shaft, an upper bearing gland 3 is fixed at the top end of the shell 1 through bolts, a lower bearing gland 4 is fixed at the bottom end of the shell 1 through bolts, the power head component is used for compressing the tapered roller bearing 10 and the driving shaft 2, preventing the driving shaft 2 from moving in the radial direction, remarkably improving the impact load resistance of the power head component, greatly enhancing the structural strength of the power head component, keeping the sealing in the shell 1 due to the flange disc type structure of the lower bearing gland 4 and reducing the failure rate of the power head component.

The casing 1 is rotatably connected with a rack of a drilling machine through a connecting pin shaft 8, a fixed pressing plate 9 is fixed on the casing 1, the casing 1 and the fixed pressing plate 9 are of an integrated structure, and when the casing 1 is adjusted to a proper position, the casing 1 is fixedly connected with the rack of the drilling machine through the fixed pressing plate 9; casing 1 is equipped with connecting pin axle 8 as main support and connecting element on the casing 1 for be connected with the frame, be used for the position adjustment of whole power head subassembly small range, and the effect of stationary platen 9 is fixed whole power head subassembly, makes its operation that can be steady, and concrete implementation method is: when the power head assembly is used, the shell 1 can be rotated, the power head is adjusted to the drilling center position of a drilling machine, then the fixed pressing plate 9 is fixed with the front head support of the drilling machine through bolts, so that the power head assembly is stably fixed at the center position, vibration and impact in the drilling process can be borne, and small-amplitude deflection and hammering cannot influence the tightness of the power head assembly.

The drilling rod passes through drilling rod connector 5 and driving shaft 2 fixed connection, the specification of driving shaft 2 has been reduced through drilling rod connector 5, volume and the weight of whole power head subassembly have been reduced again when guaranteeing drilling efficiency, make the power head subassembly can load the drilling rod of different specifications through setting up drilling rod connector 5, also can effectively reduce because the frequent wearing and tearing that loading and unloading drilling rod brought driving shaft 2, prolong its wear cycle, also adapt to the standardization and the modularization of current drilling rod, only need change corresponding drilling rod connector 5 when using different specification drilling rods to bore a hole can, and is simple and convenient, the work efficiency of whole power head subassembly has been improved.

Referring to fig. 2, in the embodiment, a protective sleeve 6 and an anti-abrasion sleeve 7 for preventing the driving shaft 2 from being abraded are innovatively added, the driving shaft 2 is exposed out of an exposed part of the housing 1, and due to the fact that an on-site drilling construction environment is complex and is mixed with soil and gravel, abrasion of the driving shaft 2 can be increased, the service life of the driving shaft 2 is shortened, further the sealing performance in the housing 1 can be reduced, dust, fine sand and the like can enter the housing 1 to damage the driving shaft 2, the protective sleeve 6 and the anti-abrasion sleeve 7 are added to the lower portion of the housing 1, the anti-abrasion sleeve 7 is fixed to a lower bearing end cover through bolts, and a sealing gasket is filled in the middle of the anti-abrasion sleeve for preventing dust pollution and abrasion of the driving shaft 2; be provided with water pipe connection 11 on the abrasionproof sleeve 7, all set up the hole corresponding with water pipe connection 11 on protective sheath 6 and the driving shaft 2, an injection passageway for drilling rod drilling in-process lubricated water or mud, the lubrication groove has been seted up on the abrasionproof sleeve 7, can make protective sheath 6 rotate in the abrasionproof sleeve 7 is nimble, protective sheath 6 can effectual protection driving shaft 2, can replace the wearing and tearing of driving shaft 2 in the rotation process, greatly increased driving shaft 2's life, and increase O type circle in the middle of driving shaft 2 and the protective sheath 6, be used for preventing water or mud from flowing backward into casing 1 along the clearance between protective sheath 6 and the driving shaft 2, the life cycle of equipment has been prolonged, the drilling efficiency of whole power head subassembly has been improved effectively, power head subassembly fault rate and cost of maintenance have been reduced, the life of power head subassembly has been improved.

As shown in fig. 1, the wear-resistant sleeve 7 is provided with a water pipe connector 11, and the driving shaft 2 and the protective sleeve 6 are both provided with holes corresponding to the water pipe connector 11, so that lubricating water or slurry can be efficiently injected into the drill rod, and the stability of the rotation of the driving shaft 2 is increased; a lubricating oil groove for flexibly rotating the protective sleeve 6 is formed in the anti-wear sleeve 7.

Referring to fig. 2, the driving shaft 2 is rotatably connected to the housing 1 through a tapered roller bearing 10, and a seal lubrication member such as a tapered roller bearing 10, a seal washer, an oil seal, and the like is installed in the housing 1 for flexible rotation of the driving shaft 2.

The end of the driving shaft 2 extending out of the shell 1 is hollow and used for conveying water or slurry to the bottom end of the drill rod, so that the drill rod and rock or hard soil can be sufficiently lubricated during drilling.

Sealing rings are arranged in the upper bearing gland 3 and the lower bearing gland 4 and used for keeping the sealing performance in the shell 1 so as to prevent stone soil and slurry from entering to influence the normal operation or abrasion of the driving shaft 2 and increase the failure rate of equipment.

The working principle is as follows: the casing 1 rotates to a working position through a connecting pin shaft 8, a fixed pressing plate 9 is screwed on a rack by using a fastening bolt, a drill rod is screwed on a drill rod connector 5, a hydraulic motor is started, power is input to the driving shaft 2 through a spline by the hydraulic motor, the driving shaft 2 drives the drill rod to rotate, when the whole power head assembly moves downwards, drilling is formed, the driving shaft 2 is hollow and is used for conveying water or slurry to the bottom end of the drill rod so as to ensure that the drill rod and rock or hard soil can be sufficiently lubricated during drilling, a water pipe connector 11 is arranged on an anti-abrasion sleeve 7, the water pipe connector 11 can possibly leak due to vibration and deflection in the drilling process and flows to the upper end of the driving shaft 2 along the outer wall, a lower bearing gland 4 is fixed at the upper end of the driving shaft 2, and a sealing ring is arranged in the lower bearing gland 4 and is used for keeping the sealing performance in the casing 1, so as to prevent stone soil and mud from entering, influence the normal operation or abrasion of the driving shaft 2 and increase the failure rate of the equipment.

It should be understood that the above-described specific embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Obvious variations or modifications which are within the spirit of the utility model are possible within the scope of the utility model.

Claims

1. The utility model provides a but be used for rope coring rotary drilling rig unit head subassembly which characterized in that: the bearing comprises a shell (1), a driving shaft (2) penetrating through the shell (1), an upper bearing gland (3) and a lower bearing gland (4), wherein the upper bearing gland (3) and the lower bearing gland (4) are sleeved on the driving shaft (2) and used for preventing the driving shaft from moving in the radial direction; the driving shaft (2) is rotatably connected with the shell (1), the upper bearing gland (3) is fixedly connected with the top end of the shell (1), and the lower bearing gland (4) is fixedly connected with the bottom end of the shell (1); one end of the driving shaft (2) is in transmission connection with an output end key of the hydraulic motor, and the other end of the driving shaft is fixedly connected with one end of the drill rod connector (5); the drilling rod is installed to the other end of drilling rod connector (5), driving shaft (2) stretch out the pot head of casing (1) is equipped with protective sheath (6), protective sheath (6) overcoat is equipped with abrasionproof sleeve (7), abrasionproof sleeve (7) with bearing cover (4) fixed connection down, protective sheath (6) with abrasionproof sleeve (7) rotate the connection.

2. The power head assembly for the rotary drilling rig capable of coring with a rope according to claim 1, wherein: the shell (1) is rotatably connected with a rack of the drilling machine through a connecting pin shaft (8).

3. The power head assembly for the rotary drilling rig capable of coring with a rope according to claim 1, wherein: a fixed pressing plate (9) is fixed on the shell (1), and when the shell (1) is adjusted to a proper position, the shell (1) is fixedly connected with a rack of a drilling machine through the fixed pressing plate (9).

4. The power head assembly for the rotary drilling rig capable of coring with a rope according to claim 1, wherein: the anti-abrasion sleeve (7) is provided with a water pipe connector (11), and the driving shaft (2) and the protective sleeve (6) are provided with holes corresponding to the water pipe connector (11).

5. The power head assembly for the rotary drilling rig capable of coring with a rope according to claim 1, wherein: and a lubricating oil groove for flexibly rotating the protective sleeve (6) is formed in the anti-wear sleeve (7).

6. The power head assembly for the rotary drilling rig capable of coring with a rope according to claim 1, wherein: the driving shaft (2) is rotatably connected with the shell (1) through a tapered roller bearing (10).

7. The power head assembly for the rotary drilling rig capable of coring with a rope according to claim 1, wherein: the end, extending out of the shell (1), of the driving shaft (2) is hollow.

8. The power head assembly for the rotary drilling rig capable of coring with a rope according to claim 1, wherein: and sealing rings are arranged in the upper bearing gland (3) and the lower bearing gland (4).