CN210859764U

CN210859764U - Well drilling machine gearbox and power device

Info

Publication number: CN210859764U
Application number: CN201921864187.4U
Authority: CN
Inventors: 宋雪峰
Original assignee: Linying Dongtai Machinery Manufacturing Co ltd
Current assignee: Linying Dongtai Machinery Manufacturing Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-06-26
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses a well rig gearbox and power device, this well rig gearbox includes the box, the power transmission subassembly, the subassembly of shifting, the power transmission subassembly includes along the vertical power output shaft who installs in the box, power output shaft's bottom stretches out outside the box, power output shaft is the hollow shaft, still include the connecting pipe, the connecting pipe is pegged graft in power output shaft, in the box, it is equipped with rotary seal group to correspond between the outer wall of connecting pipe and power output shaft's the internal face, the upper portion of connecting pipe stretches out outside the box. The sealed section between this well rig gearbox's power output shaft and the connecting pipe is located the box, the abundant inner space that has utilized the box for well rig gearbox's structure is compacter, has reduced well rig gearbox's volume, the transport of well rig gearbox of being convenient for, and need not the length that worry rotary seal group can lead to well rig gearbox volume increase, consequently can lengthen rotary seal group's length, reinforcing leakproofness.

Description

Well drilling machine gearbox and power device

Technical Field

The utility model relates to a well rig technical field, concretely relates to well rig gearbox and power device.

Background

The well drilling machine generally comprises a power device, a gearbox, a drilling tool, a slurry pump and other equipment, wherein the power device drives the drilling tool through the gearbox, the drilling tool is used for drilling a hole in the ground, and then the slurry pump pumps out drilled sludge until a well is formed.

The output shaft of the gearbox of the well drilling machine is hollow, the bottom end of the output shaft is used for being connected with a drill rod, the top end of the output shaft is used for being connected with a slurry pump, the output shaft needs to rotate, so that the input interface of the slurry pump needs to be rotatably connected with the output shaft, and the slurry pump of the well drilling machine has strong suction force and has high requirements on the sealing performance of the rotary connection between the input interface of the slurry pump and the output shaft.

Chinese patent publication No. CN208564423U describes a foldable drilling machine, which comprises a well machine platform, a drilling mechanism, and a traveling mechanism, wherein the drilling mechanism comprises a winch, a gantry, a driving unit connected with the gantry in a sliding manner to drive a drilling rod of the well machine to rotate, and telescopic brackets arranged at two sides below the gantry and having two ends hinged to the gantry and the well machine platform, respectively, the driving unit comprises a power source and a transmission case, an input end of the transmission case is correspondingly connected with the power source, an output shaft of the transmission case is a hollow shaft, a front support frame for supporting the gantry is arranged at the front end of the well machine platform, and a rear support frame is arranged at the rear end of the well machine platform. The upper end of the output shaft of the gearbox of the folding drilling machine extends out of the gearbox body and is extended, then a connecting seat for installing a slurry pump is arranged, the connecting seat is connected with the top end of the output shaft of the gearbox in a rotating and sealing mode, and the connecting mode has the following defects: firstly, the size of the gearbox is increased, and the height of the gearbox is increased due to the fact that a rotary sealing joint needs to be additionally arranged at the top of the gearbox, so that the size of the gearbox in the well drilling machine is increased; secondly, rotary joint's leakproofness is not good, in order to avoid the gearbox volume increase, needs shorten the height of connecting seat, leads to sealed length shorter, and the leakproofness is not good.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a well rig gearbox and power device solve among the prior art well rig power device bulky, the inconvenient technical problem who carries.

In order to solve the above technical problem, the first aspect of the present invention is:

the design is that a well drilling machine gearbox, includes the box, be equipped with power input shaft, power output shaft, the subassembly of shifting in the box, be equipped with the gear train between power input shaft, the power output shaft, power output shaft is the hollow shaft be equipped with the connecting pipe in the power output shaft, power output shaft and connecting pipe are located part in the box is equipped with rotatory sealing washer group each other.

Preferably, an inner flange for limiting the rotary sealing ring group is arranged at the inner upper part of the power output shaft, and an annular pressing cylinder is arranged below the rotary sealing ring group.

Preferably, a connecting seat for mounting a pump is arranged at a position of the box body above the power output shaft.

Preferably, the connecting base includes an upper flange, a lower flange and a sleeve portion between the upper flange and the lower flange, and an upper portion of the connecting pipe extends upward and passes through the connecting base.

Preferably, the lower end of the power output shaft is mounted on the wall of the box body through a tapered roller bearing.

Preferably, a ball bearing is arranged between the upper end of the power output shaft and the box body, an external thread section is arranged at the upper end of the power output shaft, and a compression nut used for compressing the ball bearing is screwed on the external thread section.

Preferably, the shift assembly is a two-gear shift assembly.

The second aspect of the utility model is:

a power device of a well drilling machine is designed, which comprises the gearbox of any one of the first aspect of the utility model, the upper end of the connecting pipe is connected with a circulating pump, and the upper part of the circulating pump is provided with a circulating pump motor; and a gearbox motor for driving the power input shaft is arranged on the gearbox.

Preferably, a flap valve is arranged on the output joint of the circulating pump.

The utility model has the advantages of:

1. the utility model provides a sealed section between power output shaft and the connecting pipe of well rig gearbox is located the box, the abundant inner space that has utilized the box for the structure of well rig gearbox is compacter, has reduced the volume of well rig gearbox, the transport of the well rig gearbox of being convenient for.

2. The sealing section between the power output shaft and the connecting pipe is arranged in the box body, so that the size of a gearbox of the well drilling machine can be increased due to the fact that the length of the rotary sealing ring group is not needed to be worried about, the length of the rotary sealing ring group can be increased, and the sealing performance is enhanced.

Drawings

Fig. 1 is a schematic perspective view of a transmission case of a well drilling rig according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a transmission of a well drilling rig according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a power transmission assembly and a gear shift assembly of a transmission case of a well drilling machine according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a power device of a well drilling rig according to an embodiment of the present invention.

In the drawings, each reference numeral means: the device comprises a box body 10, a ball bearing 11, a tapered roller bearing 12, a power output shaft 20, a flange 21, an inner flange 22, an annular pressing cylinder 23, an outer threaded section 24, a compression nut 25, a connecting pipe 30, a rotary sealing ring set 40, a connecting seat 50, an upper flange 51, a lower flange 52, a sleeve portion 53, a power input shaft 61, a first intermediate shaft 62, a second intermediate shaft 63, a first low-speed gear 64, a first high-speed gear 65, a second low-speed gear 66, a second high-speed gear 67, a shift lever 68, a shift fork 69, a well drilling machine gearbox 70, a gearbox motor 71, a circulating pump motor 72, a flap valve 73, an output water pipe joint 731, a pull rod 732, a circulating pump 74 and a stop handle 75.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1:

a transmission of a well drilling rig, please refer to fig. 1 to 3.

As shown in FIG. 1, the embodiment of the utility model provides a well drilling machine gearbox includes box 10, power transmission component, the subassembly of shifting, and power transmission component installs in box 10, and the subassembly of shifting cooperatees with power transmission component to a drive ratio for adjusting power transmission component.

As shown in fig. 2, the power transmission assembly includes a power output shaft 20 vertically installed in the casing 10, the bottom of the power output shaft 20 extends out of the casing 10, and a flange 21 is provided at the bottom of the power output shaft 20 for connecting the drill rods.

The power output shaft 20 is a hollow shaft, a connecting pipe 30 is arranged, the connecting pipe 30 is partially inserted into the power output shaft 20, in the box body 10, a rotary sealing ring group 40 is correspondingly arranged between the outer wall surface of the connecting pipe 30 and the inner wall surface of the power output shaft 20, the rotary sealing ring group 40 comprises a plurality of rotary sealing rings arranged at intervals, lubricating oil is filled in an annular gap between every two adjacent rotary sealing rings, and the upper part of the connecting pipe 30 extends out of the box body 10.

The flange 21 at the bottom of the power output shaft 20 is used for connecting a drill rod, the upper part of the connecting pipe 30 is used for connecting a pump, the drill rod is hollow, and slurry is pumped out upwards through the pump while the drill rod drills downwards during well drilling. Under the condition that the power output shaft 20 continuously rotates to drive the drill rod to rotate, but the connecting pipe 30 does not rotate, the rotary sealing ring set 40 is arranged to seal a gap between the connecting pipe 30 and the power output shaft 20.

Because the sealed section between power take-off 20 and connecting pipe 30 is located box 10, rather than lengthening power take-off's length like traditional mode, adopt the sleeve cover to establish on power take-off and set up sealedly between the extension section of sleeve and power take-off, this application abundant utilization the inner space of box 10, reduced the volume of rig gearbox, be convenient for the transport of rig gearbox.

In addition, the sealing section between the power output shaft 20 and the connecting pipe 30 is arranged in the box body 10, so that the size of the gearbox of the well drilling machine is not increased due to the length of the rotary sealing ring group, the length of the rotary sealing ring group can be increased, and the sealing performance is enhanced.

The upper limiting piece and the lower limiting piece which are used for resisting the rotary sealing ring group 40 are respectively arranged above and below the rotary sealing ring group 40, in the embodiment, the upper limiting piece is an inner flange 22 arranged at the upper part in the power output shaft 20, the lower limiting piece is an annular pressing cylinder 23, the annular pressing cylinder 23 extends from the bottom end of the rotary sealing ring group 40 to the lower end of the power output shaft 20, and a proper distance is reserved between the lower end face of the annular pressing cylinder 23 and the lower end of the power output shaft 20 so as to be used for arranging a sealing ring between a flange of a drill rod and the flange 21.

Further, a ball bearing 11 is arranged between the upper end of the power output shaft 20 and the box body 10, the lower end of the power output shaft 20 is mounted on the box wall of the box body 10 through a tapered roller bearing 12, and bearing seats for placing the ball bearing 11 and the tapered roller bearing 12 are respectively arranged on the box wall of the box body 10. An external thread section 24 is arranged at the upper end of the power output shaft 20, a compression nut 25 for compressing the ball bearing 11 is arranged on the external thread section 24, two compression nuts 25 are arranged to prevent loosening, and the compression nut 25 compresses the inner ring of the ball bearing 11; the lower part of the power output shaft 20 is provided with a corresponding outer shaft shoulder, the inner ring of the tapered roller bearing 12 is pressed through the outer shaft shoulder, the lower end of the tapered roller bearing 12 is also provided with a bearing end cover 25, and an oil seal is arranged in the bearing end cover 25 and used for sealing a gap between the bearing end cover 25 and the power output shaft 20.

As shown in fig. 1, a connecting seat 50 for mounting a pump is provided at a portion of the casing 10 above the power output shaft 20, the connecting seat 50 includes an upper flange 51, a lower flange 52, and a sleeve portion 53 located between the upper flange 51 and the lower flange 52, and a lower flange extending downward and pressing an outer ring of the ball bearing 11 is provided at a middle portion of a lower end surface of the lower flange 52. The upper flange 51 is formed with a stepped portion in which a support ring cover 54 is mounted, and an outer flange is provided at a corresponding portion of the connection pipe 30, and supported on the support ring cover 54 to prevent the connection pipe 30 from moving down inside the casing 10.

The tapered roller bearing 12 can bear the upward axial thrust applied by the drill rod to the power output shaft 20. The connecting base 50 is arranged to connect the pump with the gearbox of the well drilling machine, specifically, the upper part of the connecting pipe 30 can penetrate through and extend out of a hole in the connecting base 50, the lower flange 52 is arranged on the box body 10, the pump can be arranged on the upper flange 51, and the upper end of the connecting pipe 30 is connected with a corresponding interface of the pump.

Furthermore, the gearbox of the well drilling machine is a two-gear gearbox, so that the number of gears is small, and quick gear shifting is facilitated. As shown in fig. 2 and 3, the power transmission assembly of the gearbox of the well drilling machine comprises a power output shaft 20, a power input shaft 61, a first intermediate shaft 62 and a second intermediate shaft 63, wherein the first intermediate shaft 62 is provided with a first low-speed gear 64 and a first high-speed gear 65, the second intermediate shaft 63 is provided with a second low-speed gear 66 and a second high-speed gear 67, and the second intermediate shaft 63 is further provided with an intermediate gear engaged with a large gear on the power output shaft 20; the shift assembly includes a shift lever 68 and a shift fork 69, the shift fork 69 is mounted on the shift lever 68, the shift fork 69 shifts the first low-speed gear 64 to move upward so that the first low-speed gear 64 is engaged with the second low-speed gear 66, and the power output shaft 20 is at a low speed, and the shift fork 69 shifts the first high-speed gear 65 to move downward so that the first high-speed gear 65 is engaged with the second high-speed gear 67, and the power output shaft 20 is at a high speed.

Example 2:

a power device of a well drilling machine, please refer to fig. 4.

As shown in fig. 4, the power device of the well drilling machine comprises a gearbox 70 of the well drilling machine, the gearbox 70 of the well drilling machine in embodiment 1 is a gearbox of the well drilling machine, a circulating pump 74 is connected to the upper end of a connecting pipe of the gearbox 70 of the well drilling machine, a circulating pump motor 72 is installed on the upper part of the circulating pump 74, a gearbox motor 71 for driving a power transmission assembly is installed on a power input shaft of the gearbox, and the gearbox motor 71 is connected with the power input shaft of the gearbox through a chain coupling; a flap valve 73 is installed on an output joint of the circulating pump 74, the flap valve 73 is a check valve with the function of preventing external water from flowing backwards, an output water pipe joint 731 is connected to the other end of the flap valve 73, and a pull rod 732 is further arranged on the flap valve 73 and can be used for opening or closing the flap valve 73. A pivot is arranged between the front end of the blocking handle 75 and the box body of the well drilling machine gearbox 70, the middle of the blocking handle 75 is connected to a gear rod of the well drilling machine gearbox 70, and the blocking handle 75 is equivalent to a lever and can drive the gear rod of the well drilling machine gearbox 70 to move up and down.

The power device of the well drilling machine can be used for a positive and negative circulation well drilling machine, and the well drilling mode is as follows: the gearbox motor 71 is started to drive the drill rod connected with the gearbox to rotate, and a drill bit of the drill rod can generate muck, slag stones and the like during drilling; mud or water can be flowed in from the wellhead and then sucked out of the drill pipe, and the process takes the dregs and the slag rocks to the ground by the mud, and the mud and the slag rocks are circulated repeatedly.

The flap valve 73 is arranged so as to vacuumize the well, soil around the well can be reinforced through vacuumizing, specifically, when the well is vacuumized, a well opening is sealed, the circulating pump motor 72 is started, well water is pumped out through the drill rod, after the water level in the well drops to a proper point position, the circulating pump motor 72 is closed, the flap valve 73 is closed, muddy water is prevented from being poured into the well, and the interior of the well is kept vacuum.

The present invention has been described in detail with reference to the accompanying drawings and embodiments, but those skilled in the art will understand that various specific parameters in the above embodiments can be changed without departing from the spirit of the present invention to form a plurality of specific embodiments, which are the common variation ranges of the present invention and will not be described in detail herein.

Claims

1. The utility model provides a well rig gearbox, includes the box, be equipped with power input shaft, power output shaft, the subassembly of shifting in the box, be equipped with the gear train between power input shaft, the power output shaft, its characterized in that, power output shaft is the hollow shaft be equipped with the connecting pipe in the power output shaft, power output shaft and connecting pipe are located the part in the box is equipped with rotary seal group each other.

2. The well drilling machine gearbox according to claim 1, wherein an inner flange for limiting the rotary sealing ring group is arranged at the inner upper part of the power output shaft, and an annular pressing cylinder is arranged below the rotary sealing ring group.

3. The well drilling machine gearbox according to claim 1, wherein a connecting seat for mounting a pump is provided at a portion of the box body above the power take-off shaft.

4. The well drilling rig gearbox of claim 3, wherein the connection base includes an upper flange, a lower flange, and a sleeve portion between the upper and lower flanges, an upper portion of the connection tube extending upwardly and through the connection base.

5. The well-drilling machine gearbox according to claim 1, wherein the lower end of the power take-off shaft is mounted on the wall of the casing by means of tapered roller bearings.

6. The well drilling machine gearbox according to claim 1, wherein a ball bearing is arranged between the upper end of the power output shaft and the box body, an external thread section is arranged at the upper end of the power output shaft, and a compression nut for compressing the ball bearing is screwed on the external thread section.

7. The well drilling rig gearbox of claim 1, wherein the shift assembly is a two-gear shift assembly.

8. A well drilling power device is characterized by comprising a gearbox as claimed in any one of claims 1 to 7, wherein the upper end of the connecting pipe is connected with a circulating pump, and a circulating pump motor is arranged at the upper part of the circulating pump; and a gearbox motor for driving the power input shaft is arranged on the gearbox.

9. A well drilling power device according to claim 8, characterized in that a flap valve is mounted on the output joint of the circulating pump.