Mining wet-type drilling box

Abstract

The invention discloses a mining wet type drilling box. The bearing box body is arranged at the bottom end of the hydraulic motor, the rotating shaft is arranged in the bearing box body and is matched with the hydraulic motor, the water injection box body is arranged at the bottom of the bearing box body, the bearing pack is arranged between the rotating shaft and the bearing box body, and the drill bushing is arranged at the end part of the rotating shaft; the flange end of the hydraulic motor is connected with the lower end face of the bearing box body through a bolt through a spigot; the flange end of the hydraulic motor is sealed through an O-shaped rubber sealing ring; the upper end face of the bearing box body and the lower end face of the water injection tank are connected through a bolt and are positioned through a spigot. The brand-new wet type drill box is composed of the hydraulic motor, the bearing box body, the rotating shaft, the water injection box body, the bearing set and the drill sleeve, abrasion to a sealing ring in the using process is reduced, and the purposes of improving the sealing performance of the drill box and guaranteeing the using quality of the drill box are achieved.

Description

Technical Field

[0001] The invention relates to the field of drill box production and application, and in particular to a wet drill box for mining. Background Art

[0002] In the prior art, the sealing ring inside the wet drill box often fails during use, causing cooling water to enter the bearing cavity and cause emulsification, resulting in bearing lubrication failure and bearing damage; at the same time, water leakage also causes insufficient water pressure and water volume when the anchor drill box is drilling, causing the drill box to fail to work normally.

[0003] How to improve the sealing performance of the drill box and ensure the quality of use of the drill box is a technical problem that needs to be solved urgently at this stage.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes a wet drill box for mining, so as to achieve the purpose of improving the sealing performance of the drill box and ensuring the use quality of the drill box.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A wet drill box for mining, comprising a hydraulic motor, a bearing box body arranged at the bottom end of the hydraulic motor, a rotating shaft arranged in the bearing box body and matched with the hydraulic motor, a water injection box body arranged at the bottom of the bearing box body, a bearing group arranged between the rotating shaft and the bearing box body, and a drill sleeve arranged at the end of the rotating shaft;

[0008] The flange end of the hydraulic motor is connected to the lower end surface of the bearing housing by bolts and positioned by stoppers; the flange end of the hydraulic motor and the bearing housing are sealed by an O-type rubber sealing ring;

[0009] The upper end surface of the bearing box body is connected to the lower end surface of the water injection box by bolts and is positioned by a stopper.

[0010] The present invention provides a new wet drill box composed of a hydraulic motor, a bearing box, a rotating shaft, a water injection box, a bearing group and a drill sleeve, which reduces the wear of the sealing ring during use, thereby achieving the purpose of improving the sealing performance of the drill box and ensuring the use quality of the drill box.

[0011] It is further worth noting that the bearing group includes an upper tapered roller shaft arranged at the top end of the bearing housing and a lower tapered roller shaft arranged at the bottom end of the bearing housing; the upper tapered roller shaft and the lower tapered roller shaft are both sleeved on the rotating shaft;

[0012] The interior of the bearing housing is a step-like structure, and the upper tapered roller shaft and the lower tapered roller shaft are arranged in the bearing housing through the step-like structure. The outer ring of the upper tapered roller bearing and the lower tapered roller shaft are both installed with a transition fit with the bearing housing, and the rotating shaft is sleeved on the inner rings of the upper tapered roller bearing and the lower tapered roller shaft.

[0013] It is further worth noting that the drill sleeve is fixedly connected to the rotating shaft via a reverse locking nut.

[0014] It is further worth noting that the power output shaft of the hydraulic motor is connected to the rotating shaft via a flat key.

[0015] It is further worth noting that the outer mirror image of the bearing housing is provided with an oil filling device, a breathable filter plug and a water filling hole connected to the liquid distribution plate, and the water filling hole and the relative hole of the liquid distribution plate are sealed with an O-ring; the inner mirror image of the bearing housing is provided with a water channel, which is connected with the water channel of the liquid distribution plate and the water channel of the water filling housing, and flows into the interior of the rotating shaft through the four holes opened on the rotating shaft.

[0016] It is further worth noting that the rotating shaft is a stepped structure, the rotating power input end is a contact section for assembling upper and lower tapered roller bearings, the outer surface of the end of the power input end of the rotating shaft is provided with a threaded section, and the upper and lower tapered roller bearings are fastened by elastic washers and nuts, and the end of the power input end of the rotating shaft is provided with a flat keyway connected to the hydraulic motor;

[0017] The power output end of the rotating shaft is a contact section for the sealing ring inside the water injection box. The outer surface of the end of the power output end of the rotating shaft is provided with a thread. The end of the power output end of the rotating shaft is provided with a water hole for use with a drill rod. A special sealing ring is provided inside the water hole, and a reverse locking nut and a drill sleeve are installed at the threaded end of the outer surface.

[0018] It is further worth noting that three W-shaped sealing rings and one skeleton oil seal are provided inside the water injection box, wherein drainage holes evenly distributed around the circumference are provided between the first W-shaped sealing ring and the second W-shaped sealing ring, and water grooves are provided between the second W-shaped sealing ring and the third W-shaped sealing ring, and are connected to the water channel inside the water injection box; a skeleton oil seal is provided at the bottom end of the water injection box.

[0019] It is further worth noting that a liquid distribution plate is also provided on one side of the bearing housing, and the oil inlet and outlet of the hydraulic motor are connected to the liquid distribution plate via a conversion head.

[0020] It is further worth noting that the side of the liquid distribution plate is provided with an oil inlet hole, an oil outlet hole, an oil return hole, a water inlet hole and a collision valve interface. The liquid distribution plate is connected to a collision valve through the collision valve interface.

[0021] The present invention has the following advantages:

[0022] 1. The present invention provides a new wet drill box composed of a hydraulic motor, a bearing box, a rotating shaft, a water injection box, a bearing group and a drill sleeve, which reduces the wear of the sealing ring during use, thereby achieving the purpose of improving the sealing performance of the drill box and ensuring the use quality of the drill box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0024] Figure 1 A schematic structural diagram of a wet drill box for mining disclosed in an embodiment of the present invention;

[0025] Figure 2 A cross-sectional schematic diagram of a wet drill box for mining disclosed in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the installation of a W-shaped sealing ring in a wet drill box for mining disclosed in an embodiment of the present invention;

[0027] The numbers and letters in the figure represent the corresponding component names:

[0028] 1. Hydraulic motor 2. Bearing housing 3. Rotating shaft 4. Water injection housing 51. Upper tapered roller shaft

[0029] 52. Lower tapered roller shaft 6. Drill sleeve 7. Liquid distribution plate 8. O-type rubber seal 9. W-type seal

[0030] 10. Drain hole 11. Conversion head 12. Collision valve. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] The present invention provides a wet drill box for mining, whose working principle is to reduce the wear of the sealing ring during use by forming a new wet drill box composed of a hydraulic motor, a bearing box, a rotating shaft, a water injection box, a bearing group and a drill sleeve, so as to achieve the purpose of improving the sealing performance of the drill box and ensuring the use quality of the drill box.

[0033] The present invention is further described in detail below with reference to examples and specific implementation modes.

[0034] like Figure 1-Figure 3 As shown, a wet drill box for mining includes a hydraulic motor 1, a bearing box 2 arranged at the bottom of the hydraulic motor, a rotating shaft 3 arranged in the bearing box and matched with the hydraulic motor, a water injection box 4 arranged at the bottom of the bearing box, a bearing group arranged between the rotating shaft and the bearing box, a drill sleeve 6 arranged at the end of the rotating shaft and a liquid distribution plate 7 arranged at one side of the bearing box;

[0035] The flange end of the hydraulic motor is connected to the lower end surface of the bearing housing by bolts and positioned by a stopper; the flange end of the hydraulic motor and the bearing housing are sealed by an O-type rubber sealing ring 8; the power output shaft of the hydraulic motor is connected to the rotating shaft by a flat key.

[0036] The upper end surface of the bearing box body is connected to the lower end surface of the water injection box by bolts and is positioned by a stopper.

[0037] The bearing group includes an upper tapered roller shaft 51 arranged at the top end of the bearing housing and a lower tapered roller shaft 52 arranged at the bottom end of the bearing housing; the upper tapered roller shaft and the lower tapered roller shaft are both sleeved on the rotating shaft; the interior of the bearing housing is a step-like structure, the upper tapered roller shaft and the lower tapered roller shaft are arranged in the bearing housing through the step-like structure, and the outer ring of the upper tapered roller bearing and the lower tapered roller shaft are both installed with a transition fit with the bearing housing, and the rotating shaft is sleeved on the inner rings of the upper tapered roller bearing and the lower tapered roller shaft.

[0038] The drill sleeve is fixedly connected to the rotating shaft via a lock nut.

[0039] The outer mirror image of the bearing housing is provided with an oil filling device, a breathable filter plug and a water filling hole connected with the liquid distribution plate, and the water filling hole and the relative hole of the liquid distribution plate are sealed with an O-ring; the inner mirror image of the bearing housing is provided with a water channel, which is connected with the water channel of the liquid distribution plate and the water channel of the water filling housing, and flows into the interior of the rotating shaft through the four holes opened on the rotating shaft.

[0040] The rotating shaft is a stepped structure, and the rotating power input end is a contact section for assembling upper and lower tapered roller bearings. The outer surface of the end of the power input end of the rotating shaft is provided with a threaded section, and the upper and lower tapered roller bearings are fastened by elastic washers and nuts. The end of the power input end of the rotating shaft is internally provided with a flat keyway connected to the hydraulic motor; the power output end of the rotating shaft is a contact section for assembling the internal sealing ring of the water injection box body, and the outer surface of the end of the power output end of the rotating shaft is provided with a thread, and the end of the power output end of the rotating shaft is internally provided with a water hole used in conjunction with a drill rod, and a special sealing ring is provided inside the water hole, and at the same time, a reverse locking nut and a drill sleeve are provided at the threaded end of the outer surface.

[0041] Three W-shaped sealing rings and one skeleton oil seal are arranged inside the water injection box, wherein circumferentially evenly distributed drainage holes 10 are arranged between the first W-shaped sealing ring 9 and the second W-shaped sealing ring, the second W-shaped sealing ring and the third W-shaped sealing ring are provided with water grooves, and are connected with the water channel inside the water injection box; a skeleton oil seal is arranged at the bottom end of the water injection box.

[0042] The oil inlet and outlet of the hydraulic motor are connected to the liquid distribution plate through a conversion head 11. The side of the liquid distribution plate is provided with an oil inlet hole, an oil outlet hole, an oil return hole, a water inlet hole and a collision valve interface. The liquid distribution plate is connected to a collision valve 12 through the collision valve interface, and the collision valve is used to limit the movement of the drilling box to avoid damage.

[0043] A hole seal is used between the drill rod set at the head end of the drill sleeve and the rotating shaft, and a sealing groove is processed on the drill rod to install a sealing ring, so that the sealing ring can be replaced at the same time as the drill rod is replaced; the problem of the sealing ring being damaged after multiple replacements of the drill rod is avoided, and the sealing of the tail of the drill rod is ensured.

[0044] By adopting the innovative structural design of internal water inlet and oil-water separation, the service life is extended while taking into account the convenience of maintenance and replacement of wearing parts, which greatly saves maintenance costs and time costs.

[0045] Through the above method, the present invention provides a mining wet drill box, which is composed of a hydraulic motor, a bearing box, a rotating shaft, a water injection box, a bearing group and a drill sleeve to form a new wet drill box, which reduces the wear of the sealing ring during use, thereby achieving the purpose of improving the sealing performance of the drill box and ensuring the quality of use of the drill box.

[0046] The above is only a preferred embodiment of a wet drill box for mining disclosed in the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all fall within the protection scope of the present invention.

Claims

1. A wet drill box for mining, characterized in that: It comprises a hydraulic motor, a bearing housing arranged at the bottom of the hydraulic motor, a rotating shaft arranged in the bearing housing and matched with the hydraulic motor, a water injection housing arranged at the bottom of the bearing housing, a bearing group arranged between the rotating shaft and the bearing housing, and a drill sleeve arranged at the end of the rotating shaft; The flange end of the hydraulic motor is connected to the lower end surface of the bearing housing by bolts and positioned by stoppers; the flange end of the hydraulic motor and the bearing housing are sealed by an O-type rubber sealing ring; The upper end surface of the bearing box body is connected to the lower end surface of the water injection box by bolts and is positioned by a stopper.

2. A wet drilling box for mining according to claim 1, characterized in that: The bearing group includes an upper tapered roller shaft arranged at the top end of the bearing housing and a lower tapered roller shaft arranged at the bottom end of the bearing housing; the upper tapered roller shaft and the lower tapered roller shaft are both sleeved on the rotating shaft; The interior of the bearing housing is a step-like structure, and the upper tapered roller shaft and the lower tapered roller shaft are arranged in the bearing housing through the step-like structure. The outer ring of the upper tapered roller bearing and the lower tapered roller shaft are both installed with a transition fit with the bearing housing, and the rotating shaft is sleeved on the inner rings of the upper tapered roller bearing and the lower tapered roller shaft.

3. A wet drilling box for mining according to claim 1, characterized in that: The drill sleeve is connected to the rotating shaft through threads and is reversely fixed through a lock nut.

4. A wet drilling box for mining according to claim 2, characterized in that: The power output shaft of the hydraulic motor is connected to the rotating shaft via a flat key.

5. A wet drilling box for mining according to claim 4, characterized in that: The outer mirror image of the bearing housing is provided with an oil filling device, a breathable filter plug and a water filling hole connected with the liquid distribution plate, and the water filling hole and the relative hole of the liquid distribution plate are sealed with an O-ring; the inner mirror image of the bearing housing is provided with a water channel, which is connected with the water channel of the liquid distribution plate and the water channel of the water filling housing, and flows into the interior of the rotating shaft through the four holes opened on the rotating shaft.

6. A wet drilling box for mining according to claim 2, characterized in that: The rotating shaft is a stepped structure, the power input end of the rotating shaft is a contact section for assembling upper and lower tapered roller bearings, the outer surface of the end of the power input end of the rotating shaft is provided with a threaded section, and the lower tapered roller bearing is fastened by an elastic washer and a nut, and the end of the power input end of the rotating shaft is provided with a flat keyway connected to the hydraulic motor; The power output end of the rotating shaft is a contact section for the sealing ring inside the water injection box. The outer surface of the end of the power output end of the rotating shaft is provided with a thread. The end of the power output end of the rotating shaft is provided with a water hole for use with a drill rod. A special sealing ring is provided inside the water hole, and a reverse locking nut and a drill sleeve are installed at the threaded end of the outer surface.

7. A wet drilling box for mining according to claim 1, characterized in that: Three W-shaped sealing rings and one skeleton oil seal are arranged inside the water injection box, wherein drainage holes evenly distributed on the circumference are arranged between the first W-shaped sealing ring and the second W-shaped sealing ring, and water grooves are arranged between the second W-shaped sealing ring and the third W-shaped sealing ring, and are connected to the water channel inside the water injection box; a skeleton oil seal is arranged at the bottom end of the water injection box.

8. A wet drilling box for mining according to claim 1, characterized in that: It also includes a liquid distribution plate arranged on one side of the bearing housing, and the oil inlet and outlet of the hydraulic motor are connected to the liquid distribution plate through a conversion head.

9. A wet drilling box for mining according to claim 8, characterized in that: An oil inlet hole, an oil outlet hole, an oil return hole, a water inlet hole and a collision valve interface are arranged on the side of the liquid distribution plate, and the liquid distribution plate is connected to the collision valve through the collision valve interface.

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