CN219864874U - Drilling box and drilling machine - Google Patents

Abstract

The utility model relates to the technical field of engineering equipment, in particular to a drilling box and a drilling machine, wherein the drilling box comprises: a case; the main shaft is arranged in the box body through a bearing; the water sealing piece is sleeved on the periphery of the main shaft and is arranged between the bearing and the water supply channel and used for preventing pressurized water in the water supply channel from flowing into the bearing; the cooling passage radially penetrates through the side wall of the box body, one end of the cooling passage is connected with the water supply device through the water inlet pipe, and the other end of the cooling passage corresponds to the main shaft and is used for cooling the main shaft. The utility model can prolong the service life of the water sealing piece and protect the safety of the bearing.

Description

Drilling box and drilling machine

Technical Field

The utility model relates to the technical field of engineering equipment, in particular to a drilling box and a drilling machine.

Background

The drilling machine is mechanical equipment for driving a drill bit to drill underground to acquire physical geological data in exploration or mineral resource development. The drilling machine comprises a drilling box and a drill bit, and the rotary water supply mechanism in the drilling box is used for introducing pressurized water into the drill bit for cooling and dust fall, so that the service life of the drill bit is prolonged, and the surrounding working environment is improved.

In the related art, after a period of use, a water sealing piece of the rotary water supply mechanism loses sealing function due to abrasion failure of an O-shaped ring and a sealing ring, so that pressurized water leaks into a bearing, and the bearing is scrapped prematurely.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art or related art.

Therefore, the utility model provides the drill box which can prolong the service life of water seal and protect the safety of the bearing.

The utility model further provides a drilling machine comprising the drilling box.

According to an embodiment of the first aspect of the utility model, a drill box comprises: a case; the main shaft is arranged in the box body through a bearing; the water sealing piece is sleeved on the periphery of the main shaft and is arranged between the bearing and the water supply channel and used for preventing pressurized water in the water supply channel from flowing into the bearing; the cooling passage radially penetrates through the side wall of the box body, one end of the cooling passage is connected with the water supply device through the water inlet pipe, and the other end of the cooling passage is arranged to correspond to the main shaft and is used for cooling the main shaft.

Preferably, the bearings comprise a first bearing and a second bearing, and the spindle is rotatably mounted in the axial direction of the housing by the first bearing and the second bearing.

Preferably, the first bearing and the second bearing are tapered roller bearings.

Preferably, the method further comprises: and the lubrication passage is communicated with the first bearing and the second bearing respectively and is used for injecting lubricating oil into the first bearing and the second bearing.

Preferably, the water seal comprises: a first water seal interposed between the water supply passage and the first bearing for preventing pressurized water in the water supply passage from flowing into the first bearing; and a second water seal interposed between the water supply passage and the second bearing for preventing the pressurized water in the water supply passage from flowing into the second bearing.

Preferably, the other end of the cooling passage is disposed between the first water seal and the second water seal and corresponds to the spindle.

Preferably, the method further comprises: and the overflow passage is radially penetrated along the side wall of the box body, is positioned between the water sealing piece and the bearing and is used for discharging the pressurized water out of the box body after the water sealing piece fails.

Preferably, the cooling passage is detachably connected with the water inlet pipe by bolts.

Preferably, the spindle extends in an axial direction by a cantilever section having a length of 1/4 of the length of the spindle.

A drilling rig according to an embodiment of the second aspect of the utility model comprises a drill box in the first aspect or in various implementations thereof.

One of the above technical solutions has at least the following advantages or beneficial effects:

for the drill box provided by the embodiment of the utility model, the cooling passage is connected between the two water sealing pieces, the cooling passage is connected with the water inlet pipe through the interface outside the box body, the water inlet hole of the cooling passage is arranged between the two water sealing pieces and corresponds to the periphery of the main shaft, when a user forgets to open the water supply operation, cooling water flows into the main shaft area between the two water sealing pieces from the water tank through the cooling passage, the main shaft can be cooled through the cooling passage, and the damage of the water sealing pieces due to overhigh temperature is prevented.

The drilling machine provided by the embodiment of the utility model is provided with the drilling box, and the drilling machine provided with the drilling box has corresponding technical effects because the drilling box has the technical effects.

Drawings

FIG. 1 shows a schematic structural view of a drill box according to an embodiment of the present utility model;

FIG. 2 shows a second schematic structural view of the drill box according to one embodiment of the present utility model;

fig. 3 shows a third schematic structural view of the drill box according to an embodiment of the present utility model.

[ reference numerals description ]

1. A case; 2. a main shaft; 21. a cantilever section; 3. a first bearing; 4. a second bearing; 5. a lubrication passage; 6. a water supply channel; 7. a first water seal; 8. a second water seal; 9. an overflow path; 10. a cooling passage; 11. a water inlet pipe.

Detailed Description

The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings.

It should be noted that, in the description of the present utility model, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and do not require that the present utility model must be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. The terms "front", "back", "left", "right", "upper", "lower" as used in the description of the present utility model refer to directions in the drawings, and the terms "inner", "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

As described above, the inventors found in the studies of the drill box and the drilling machine that the radial runout extrusion of the water seal outside the main shaft is aggravated due to the longer cantilever section of the main shaft extending end inside the drill box, thereby affecting the life of the water seal. And after the water sealing piece is damaged, the water sealing piece is not sealed with the bearing cavity, and if the failure is not treated in time, the oil-water mixture is easy to cause to influence the service life of the bearing. In addition, the main shaft is rotatably arranged in the drill box through the bearing combination, and when the bearing combination is internally arranged and cannot bear 1.6t of axial force, the tight end of the main shaft is a self-aligning bearing, so that the deep groove ball bearing has no practical effect.

In order to at least solve one of the technical problems existing in the prior art or related technologies, the utility model provides a drill box and a drilling machine, wherein a cooling passage radially penetrates through the side wall of the drill box body, one end of the cooling passage is connected with a water supply device through a water inlet pipe, and the other end of the cooling passage is arranged between two water sealing pieces and corresponds to a main shaft and is used for cooling the main shaft, so that the service life of the water sealing pieces is prolonged.

Referring to fig. 1 to 3, the present utility model provides a drill box for a drilling machine, wherein the drill box includes: the box body 1, the box body 1 is internally provided with a main shaft 2; the main shaft 2 is connected with an output shaft of a hydraulic motor, and the hydraulic motor can drive the main shaft 2 to rotate at a high speed in the box body 1 after being started so as to realize the work of the drilling box. In order to realize the cooperation installation of main shaft 2 in box 1, main shaft 2 accessible bearing combination rotates to be installed in box 1, and the bearing combination includes: a first bearing 3 and a second bearing 4. I.e. the two ends of the main shaft 2 are supported in the housing 1 by means of a first bearing 3 and a second bearing 4. The first bearing 3 and the second bearing 4 may be tapered roller bearings, for example. The tapered roller bearing is a radial thrust type rolling bearing in which the rolling elements are tapered rollers, and can bear a large axial load.

Further, the main shaft 2 extends to form a cantilever section 21 along the axial direction, and the cantilever section 21 is a part of the shaft body of the main shaft 2 extending beyond the end face of the box body 1 in the axial direction, and the radial runout extrusion of the water sealing piece is aggravated and the service life of the water sealing piece is influenced because the length of the cantilever section 21 in the prior art is longer. To solve this problem, the length of the cantilever section 21 is shortened in the present embodiment, and the length of the cantilever section may be 1/4 of the length of the spindle 2, for example. In one embodiment, the length of the cantilever section 21 can be shortened from 162mm to 42mm, and meanwhile, as the deep groove ball bearing in the prior art is replaced by the tapered roller bearing in the embodiment, the advantage of the angular contact ball bearing is fully utilized, the radial uneven compression of the water sealing piece can be reduced to the greatest extent, and meanwhile, the drilling box structure is more compact.

In order to achieve the lubrication function of the bearing and improve the service life of the bearing, the side wall of the box body 1 is penetrated with lubrication passages 5 for injecting lubricating oil into the bearing combination, the lubrication passages 5 are communicated with the first bearing 3 and the second bearing 4, it is understood that 2 lubrication passages 5 in the embodiment can be provided, one of the lubrication passages 5 is communicated with the first bearing 3, the other lubrication passage 5 is communicated with the second bearing 4, an oil inlet is formed in the outer part of each lubrication passage 5, lubricating oil is added to the lubrication passages 5 through the oil inlet, the lubricating oil flows into the first bearing 3 and the second bearing 4 through the oil inlet and the lubrication passages 5, namely, the first bearing 3 and the second bearing 4 are placed in an oil cavity, and the main shaft 2 can be fully lubricated in high rotation through the lubrication function of the lubricating oil, so that the service life of the first bearing 3 and the second bearing 4 is effectively improved. Meanwhile, the problem that oil-water mixing influences the service life of the bearing due to oil sealing with a bearing cavity after the water sealing piece is damaged is solved.

Further, the main shaft 2 is provided with a water inlet channel communicated with the water supply channel 6 along the axial direction thereof, so that pressurized water can be conveniently injected when the drilling machine drills holes, and the pressurized water can enter from the radial direction and flow out from the end head; a water seal is arranged between the water supply channel 6 and the bearing, the water seal is sleeved on the main shaft 2, and it can be understood that 2 water seals are provided in the embodiment, namely a first water seal 7 and a second water seal 8, wherein the first water seal 7 is arranged between the water supply channel 6 and the first bearing 3 and is used for preventing pressure water from leaking into the first bearing 3; a second water seal 8 is provided between the water supply channel 6 and the second bearing 4 for preventing pressurized water from leaking into the second bearing 4. The first water seal 7 and the second water seal 8 may be, for example, gurley rings.

In order to solve the problem that the water seal leaks into the bearing and then the bearing is scrapped due to abrasion failure after long-term use, in this embodiment, an overflow passage 9 is respectively provided between the first water seal 7 and the first bearing 3 and between the second water seal 8 and the second bearing 4, and when the water seal fails, the pressurized water can flow out from the overflow passage 9.

Taking the overflow passage 9 between the first water seal 7 and the first bearing 3 as an example, the overflow passage 9 is a passage penetrating radially along the box 1, one end of the overflow passage 9 is an overflow hole, the overflow hole is arranged between the first water seal 7 and the first bearing 3 and is adjacent to the periphery of the main shaft 2, the other end of the overflow passage 8 is a drain hole, the drain hole is arranged outside the box 1, in one embodiment, a filter can be installed in the drain hole, when the first water seal 7 fails, pressurized water overflows from the overflow hole, and is discharged out of the drill box through the overflow passage 9 and the drain hole, so that the bearing in the drill box is protected from being polluted, and fault diffusion is avoided. Furthermore, due to the arrangement of the lubrication passage 5 in the present embodiment, an oil seal is formed between the first water seal 7 and the first bearing 3 to make an insulating seal; the problem that oil-water mixing influences the service life of the bearing due to the fact that faults are not timely handled because the water sealing piece is damaged and then is not sealed with the bearing cavity is solved.

It will be appreciated that the two overflow passages 9 in this embodiment are symmetrically arranged and have identical structure and function, and the overflow passage 8 between the second water seal 8 and the second bearing 4 will not be described here.

Further, in order to improve the service life of the water seal, in this embodiment, a cooling passage 10 is connected between the first water seal 7 and the second water seal 8, the cooling passage 10 is connected through an external interface of the box 1, one end of the cooling passage 10 is a water inlet hole, the water inlet hole is disposed between the first water seal 7 and the second water seal 8 and is adjacent to the periphery of the main shaft 2, and the other end of the cooling passage 10 is connected with a water supply device (not shown) through a water inlet pipe 11, and the water supply device may be a water tank for storing cooling water. It is understood that the water inlet holes are used for injecting cooling water. Wherein, the cooling passage 10 and the water inlet pipe 11 can be detachably connected through bolts. It is understood that the connection between the cooling passage 10 and the water inlet pipe 11 may take any suitable form in the prior art, such as welding, clamping, bonding, bolting, etc., but the fixing manner is not specifically limited in this embodiment.

When the user forgets to turn on the water supply operation, cooling water can flow into between the first water seal 7 and the second water seal 8 from the water tank through the cooling passage 10, and cool down the main shaft 2 between the first water seal 7 and the second water seal 8, cool down the main shaft 2 through the cooling passage 10, and prevent the water seals from being damaged due to overhigh temperature.

It should be noted that, when the cooling passage 10 is used for cooling the spindle 2, an annular cooling channel is formed on the periphery of the spindle 2, and the cooling channel is located between the two first water sealing members 7 and the second water sealing member 8 and is communicated with the cooling passage 10, and cooling water in the cooling passage 10 takes away heat through circulation flow so as to cool the spindle 2, so that the service life of the water sealing members is prolonged.

Further, the drilling machine according to another embodiment of the present utility model includes: the drill box. The drilling machine can be an anchor rod drilling machine, so that the anchoring operation efficiency and the anchoring economy can be improved during underground operation.

Because the drilling machine provided by the embodiment is provided with the drilling box provided by any one of the embodiments, the drilling machine has all the beneficial effects of the drilling box provided by any one of the embodiments, and the description is omitted here.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," "specific examples," or "some examples," etc., refer to a particular feature, structure, material, or characteristic described in connection with the embodiment or example as being included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the utility model.

Claims (10)

1. A drill box, comprising:

a case;

the main shaft is arranged in the box body through a bearing;

the water sealing piece is sleeved on the periphery of the main shaft and is arranged between the bearing and the water supply channel and used for preventing pressurized water in the water supply channel from flowing into the bearing;

the cooling passage radially penetrates through the side wall of the box body, one end of the cooling passage is connected with the water supply device through the water inlet pipe, and the other end of the cooling passage corresponds to the main shaft and is used for cooling the main shaft.

2. The drill box of claim 1, wherein the bearings comprise a first bearing and a second bearing, the spindle being rotatably mounted to the box axially by the first bearing and the second bearing.

3. The drill box of claim 2, wherein the first bearing and the second bearing are tapered roller bearings.

4. The drill box of claim 2, further comprising:

and the lubrication passage is communicated with the first bearing and the second bearing respectively and is used for injecting lubricating oil into the first bearing and the second bearing.

5. The drill box of claim 2, wherein the water seal comprises:

a first water seal interposed between the water supply passage and the first bearing for preventing pressurized water in the water supply passage from flowing into the first bearing; and

and a second water seal member interposed between the water supply passage and the second bearing for preventing pressurized water in the water supply passage from flowing into the second bearing.

6. The drill box of claim 5, wherein the other end of the cooling passage is disposed between the first water seal and the second water seal and corresponds to the spindle.

7. The drill box of claim 1, further comprising:

and the overflow passage is radially communicated with the side wall of the box body, is positioned between the water sealing piece and the bearing and is used for discharging the pressurized water out of the box body after the water sealing piece fails.

8. The drill box of claim 1, wherein the cooling passage is detachably connected to the inlet tube by bolts.

9. The drill box of claim 1, wherein the spindle extends in an axial direction by a cantilever section having a length of 1/4 of the length of the spindle.

10. A drilling machine, comprising:

a drill box according to any one of claims 1 to 9.