CN214221076U

CN214221076U - Stabilizing member and drilling tool

Info

Publication number: CN214221076U
Application number: CN202120095119.7U
Authority: CN
Inventors: 杨城茏
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-17
Anticipated expiration: 2031-01-14

Abstract

The utility model provides a stable component and drilling tool belongs to drilling tool technical field. The problem that an existing drilling tool with low rotating speed and large torque is poor in stability is solved. The drilling tool comprises a drilling frame and a drilling barrel arranged on the drilling frame, wherein at least two stabilizing members are arranged on the drilling frame, each stabilizing member comprises a guide stabilizing seat with a guide hole, a stabilizing drill rod in sliding fit with the guide hole, a power unit for driving the stabilizing drill rod to rotate around the central axis of the power unit and a driving unit for enabling the stabilizing drill rod to move axially, a drill bit is arranged at the front end of the stabilizing drill rod, the guide stabilizing seats and the driving units in the stabilizing members are fixed on the drilling frame, and the stabilizing drill rod in the stabilizing members is parallel to the drilling barrel. The utility model discloses an at least two stable component fix a position the front end of drilling tool, can prevent effectively that the brill section of thick bamboo front end of low rotational speed, big moment of torsion from taking place to rock, make the brill section of thick bamboo can not skew axial position, effectively guarantee to bore a section of thick bamboo and realize coaxial rotation steadily.

Description

Stabilizing member and drilling tool

Technical Field

The utility model belongs to the technical field of the drilling tool, a stable component and drilling tool is related to.

Background

In the prior art, tunneling is a common means of non-blasting excavation of rocks, namely, a horizontal circular seam drilling machine is used for drilling circular seams on the tunnel face of the rocks to break the rock boundary, so that the rocks are favorably stripped. For example, chinese patent discloses a three-axis positioning drilling device [ application publication No. CN108086909A ], comprising a drill barrel, a central shaft, a first positioning shaft and a second positioning shaft, wherein the central shaft is disposed at the center of the drill barrel and is used for extending into an operation area to preliminarily position the drill barrel; the first positioning shaft and the second positioning shaft are parallel to the central shaft, the first positioning shaft and the second positioning shaft are arranged in a triangular mode, a connecting line of end points of the first positioning shaft and the second positioning shaft forms a bottom edge of the triangle, an end point of the central shaft forms a vertex of the triangle, and the first positioning shaft and the second positioning shaft are used for conducting auxiliary positioning on the drill cylinder.

Among the above-mentioned triaxial location creeps into device, because the tip of center pin, first location axle and second location axle supports and leans on the face, can not carry on spacingly to the drill section of thick bamboo in circumference, when the drill section of thick bamboo with the mode work of low rotational speed, big moment of torsion, the drill section of thick bamboo front end rocks, leads to deviating from axial position, stability is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a location effectual stabilizing element.

A drilling tool comprising the above stabilizing member is also presented.

The purpose of the utility model can be realized by the following technical proposal:

the stabilizing component comprises a guide stabilizing seat with a guide hole, a stabilizing drill rod in sliding fit with the guide hole, a power unit for driving the stabilizing drill rod to rotate around the central axis of the stabilizing drill rod and a driving unit for enabling the stabilizing drill rod to move axially, wherein a drill bit is arranged at the front end of the stabilizing drill rod.

The power unit drives the stable drill rod to rotate around the central axis of the power unit when in work, and the driving unit drives the stable drill rod to move axially when in work, so that the drill bit drills a positioning hole on the rock surface, and the stable drill rod is positioned on the rock under the jacking action of the driving unit.

In the above stabilizing member, the front end of the stabilizing drill rod has a conical surface, the drill bit is located at the front end of the conical surface, the outer diameter of the conical surface gradually increases from front to back, the maximum outer diameter of the drill bit is smaller than the maximum outer diameter of the conical surface, and the maximum outer diameter of the drill bit is larger than the minimum outer diameter of the conical surface.

The central axis of the conical surface is collinear with the central axis of the stabilizing drill rod and collinear with the central axis of the drill bit. When the positioning is needed, a drill bit drills a positioning hole on the rock face, the stable drill rod moves forwards at the same time, the first half section of the conical face enters the positioning hole, when the conical face is in contact with the port of the positioning hole, the axial positioning of the stable drill rod is achieved by matching with a driving unit, and the radial limiting of the stable drill rod can be achieved under the action of the positioning hole.

In the above stabilizing member, the stabilizing drill rod has an axially extending water/gas hole therein, the front end of the water/gas hole is provided to penetrate the drill, and the rear end of the stabilizing drill rod is connected to a water/gas supply unit for supplying water and gas. Water or gas or water-gas mixture is conveyed into the water-gas hole through the water-gas supply unit and is sprayed out from the front end of the drill bit for blowing slag.

In the above stabilizing member, the water and gas supply unit includes a connection sleeve having a connection hole, a water and gas seal sleeve sleeved on the connection sleeve and rotationally matched with the connection sleeve, an annular groove disposed on an inner side of the water and gas seal sleeve, and a water and gas pipe disposed on the water and gas seal sleeve and communicated with the annular groove, the connection sleeve is provided with a flow guide hole for communicating the annular groove and the connection hole, the rear end of the stabilizing drill rod is connected in the connection hole, and the water and gas hole is communicated with the connection hole.

In the stabilizing component, the driving unit is a hydraulic cylinder, a piston rod of the hydraulic cylinder is parallel to the stabilizing drill rod, the front end of the piston rod is fixedly connected with a connecting and supporting seat, the power unit is arranged on the supporting and connecting seat, and the water-gas sealing sleeve is fixedly connected with the supporting and connecting seat.

In the above stabilizing member, the power unit is a hydraulic motor, an output spindle of the hydraulic motor is connected with the connecting sleeve, and the output spindle and the drill bit are coaxially arranged.

The drilling tool comprises a drilling frame and a drilling barrel arranged on the drilling frame, wherein at least two stabilizing members are arranged on the drilling frame, a guide stabilizing seat and a driving unit in each stabilizing member are fixed on the drilling frame, and a drilling rod in each stabilizing member is parallel to the drilling barrel.

In the drilling tool, the drill frame is provided with a guide rail parallel to the stable drill rod, and the connecting and supporting seat is fixedly connected with a sliding block in sliding fit with the guide rail. Every joint support seat corresponds and is equipped with two guide rails, and equal sliding fit has the slider on every guide rail, and joint support seat links firmly with the slider that corresponds the setting with it. Can carry out circumference spacing to the joint support seat through guide rail and slider, prevent that power unit from taking its rotation to improve stability.

In the drilling tool, the number of the stabilizing members is 2-4.

In the above drilling tool, the number of the stabilizing members is two, wherein one stabilizing member is located on the left side of the drilling rig, and the other stabilizing member is located on the right side of the drilling rig.

In the above drilling tool, the number of the stabilizing members is three, two of the stabilizing members are located on the left side of the drilling rig, and the other stabilizing member is located on the right side of the drilling rig.

In the drilling tool, a plurality of hydraulic cylinders are connected in series in the same oil way. During operation, the oil is supplied to each hydraulic cylinder through the same oil way, so that the piston rods of the hydraulic cylinders push drill bits in front of the stable drill rods to abut against the rock face successively and freely, and after all the drill bits of the stable drill rods abut against the rock face, the hydraulic motor starts to work after the oil pressure in the oil way is kept constant. It can adapt to the pure flat rock face, also can adapt to the rock face of non-pure flat, and application scope is wide.

Compared with the prior art, the utility model has the advantages of it is following:

the conical surface is arranged at the front end of the stable drill rod and is matched with the positioning hole under the action of the hydraulic cylinder, so that the drill rod can be firmly clamped, and the positioning effect is good; the drill frame is positioned through the at least two stabilizing members, the front end of the drill frame can be firmly fixed, the front end of the drill barrel with low rotating speed and large torque can be effectively prevented from shaking, the drill barrel cannot deviate from the axial position, and the drill barrel is effectively guaranteed to stably realize coaxial rotation.

Drawings

Fig. 1 is a schematic structural diagram of a drilling tool provided by the present invention.

Fig. 2 is a schematic structural diagram of a stabilizing member provided by the present invention.

Fig. 3 is a cross-sectional view of a stabilizing member provided by the present invention.

Fig. 4 is a cross-sectional view of the water gas supply unit provided by the present invention.

Fig. 5 is a cross-sectional view of the present invention at a drill bit.

In the figure, 1, a guide stabilizing seat; 2. stabilizing the drill rod; 3. a drill bit; 4. a conical surface; 5. water pores; 6. Connecting holes; 7. connecting sleeves; 8. a water-gas sealing sleeve; 9. an annular groove; 10. a water gas pipe; 11. a flow guide hole; 12. a hydraulic cylinder; 121. a piston rod; 13. connecting a supporting seat; 14. a hydraulic motor; 141. an output spindle; 15. a fixed seat; 16. a drilling frame; 17. drilling a barrel; 18. a support cylinder; 19. a guide rail; 20. a rock face; 21. and (5) sealing rings.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The stabilizing member shown in fig. 2 and 3 includes a fixing seat 15, a driving unit fixed on the fixing seat 15, a connection supporting seat 13 disposed in front of the driving unit and driven by the driving unit to move back and forth, a power unit disposed on the connection supporting seat 13, a stabilizing drill rod 2 disposed in front of the power unit and driven by the power unit to rotate around its central axis, and a guiding stabilizing seat 1 disposed in front of the connection supporting seat 13, wherein a guiding hole extending in the front and back direction is formed in the guiding stabilizing seat 1, the stabilizing drill rod 2 is slidably disposed in the guiding hole, i.e., the outer diameter of the stabilizing drill rod 2 is equal to the aperture of the guiding hole, and the friction force is very small.

As shown in fig. 5, the front end of the stabilizing drill rod 2 is provided with a conical surface 4, the outer diameter of the conical surface 4 gradually increases from front to back, the central axis of the conical surface 4 is collinear with the central axis of the stabilizing drill rod 2, the front end of the conical surface 4 is coaxially provided with a drill 3, the maximum outer diameter of the drill 3 is smaller than the maximum outer diameter of the conical surface 4, and the maximum outer diameter of the drill 3 is larger than the minimum outer diameter of the conical surface 4.

As shown in fig. 3 and 4, the power unit in the present embodiment is a hydraulic motor 14, and an output spindle 141 of the hydraulic motor 14 is disposed coaxially with the stabilizing drill rod 2. In order to connect the output spindle 141 and the stable drill rod 2, as shown in fig. 3 and 4, a connecting sleeve 7 is connected to the output spindle 141, a connecting hole 6 is coaxially arranged with the output spindle 141 at the front end of the connecting sleeve 7, and the rear end of the drill bit 3 is coaxially and fixedly connected in the connecting hole 6 in a threaded or clamping manner. Wherein the connecting sleeve 7 is cylindrical and coaxial with the output main shaft 141 and the stable drill rod 2.

In some other embodiments, the power unit is an electric motor.

In order to discharge slag, as shown in fig. 3, an axially extending water hole 5 is provided in the stabilizer drill rod 2, the front end of the water hole 5 is provided to penetrate the drill 3, and the rear end of the water hole 5 is communicated with the connection hole 6. As shown in fig. 4, a water vapor sealing sleeve 8 is sleeved on the connecting sleeve 7, the water vapor sealing sleeve 8 is in running fit with the connecting sleeve 7, an annular groove 9 is arranged on the inner side of the water vapor sealing sleeve 8, a water vapor pipe 10 communicated with the annular groove 9 is arranged on the water vapor sealing sleeve 8, and a flow guide hole 11 communicated with the annular groove 9 and the connecting hole 6 is arranged on the connecting sleeve 7. Water or gas or a water-gas mixture is conveyed into the water-gas hole 5 through the water-gas supply unit and is sprayed out from the front end of the drill 3 for blowing slag.

In the present embodiment, as shown in fig. 3, the driving unit is a hydraulic cylinder 12, and a piston rod 121 of the hydraulic cylinder 12 is parallel to the stabilizing drill rod 2, for example, the piston rod 121 is coaxial with the stabilizing drill rod 2. The front end of the piston rod 121 is fixedly connected with a connecting support base 13, the hydraulic motor 14 is arranged on the supporting support base, and the water-gas sealing sleeve 8 is also fixed on the connecting support base 13 through screws. When the output main shaft 141 of the hydraulic motor 14 rotates, the connecting sleeve 7 is driven to rotate in the water vapor sealing sleeve 8.

In order to improve the sealing performance, two sealing rings 21 are arranged between the water-gas sealing sleeve 8 and the connecting sleeve 7, wherein one sealing ring 21 is positioned in front of the annular groove 9, and the other sealing ring 21 is positioned behind the annular groove 9. Water, gas or a water-gas mixture enters the annular groove 9 through the water-gas pipe 10, then enters the connecting hole 6 through the flow guide hole 11 and finally enters the water-gas hole 5. Due to the arrangement of the sealing ring 21, water, gas or water-gas mixture can be prevented from leaking out through the space between the connecting sleeve 7 and the water-gas sealing sleeve 8.

In some other embodiments, the driving unit is a pneumatic cylinder or other linear driving mechanism such as an electric push rod.

The embodiment also provides a drilling tool, the structure of which is shown in fig. 1, and the drilling tool comprises a drill rig 16, a support cylinder 18 arranged on the drill rig 16 and a driving assembly for driving the support cylinder 18 to move back and forth, wherein the drill rig 17 driven by the power assembly is coaxially arranged at the front end of the support cylinder 18, the structure of the power assembly is the same as or similar to that of the power assembly in application number CN202010288227.6 and is used for driving the drill rig 17 to rotate around a central axis of the power assembly, and the structure of the driving assembly is the same as or similar to that of the driving assembly in application number CN202010288227.6 and is used for driving the support cylinder 18 to move back and forth, so that the drill rig 17 moves back and forth.

The drill frame 16 is provided with at least two stabilizing members, which adopt the structure described in figures 2-5, and the stabilizing drill rod 2 is parallel to the drill barrel 17. Wherein, the fixed seat 15 is fixed on the drill frame 16 through screws, and the guiding stable seat 1 is fixed on the drill frame 16 through screws. The length of the guide stabilizing seat 1 is long, and the guide stabilizing seat can guide the stabilizing drill rod 2 and also can stabilize the stabilizing drill rod 2.

As shown in fig. 1 and 2, a guide rail 19 parallel to the stable drill rod 2 is provided on the drill frame 16, and a slide block slidably engaged with the guide rail 19 is fixedly connected to the connection support base 13. Every joint support seat 13 corresponds and is equipped with two guide rails 19, and equal sliding fit has the slider on every guide rail 19, and joint support seat 13 links firmly with the slider that sets up rather than corresponding. Can carry out circumference spacing to connection supporting seat 13 through guide rail 19 and slider, prevent that power unit from driving its rotation to improve stability.

In this embodiment, the number of the stabilizing members is three, and when the drill pipe 17 is operated in a left-handed manner, two stabilizing members are provided on the left side of the drill frame 16, and one stabilizing member is provided on the right side of the drill frame 16. Each stabilizing element has one hydraulic cylinder 12, and three hydraulic cylinders 12 are connected in series in the same oil circuit.

Wherein the three stabilizing members are located at the three vertices of the triangle and the drill barrel 17 is located within the triangular area.

In some other embodiments, there are two stabilizing members, one on the left side of the boom 16 and the other on the right side of the boom 16, with the two hydraulic cylinders 12 being connected in series in the same oil circuit.

During operation, the drill frame 16 is moved until the drill frame 16 abuts against the rock face 20, the piston rod 121 of the hydraulic cylinder 12 extends out to drive the connection support base 13, the hydraulic motor 14, the connecting sleeve 7, the water-gas sealing sleeve 8, the stable drill rod 2 and the drill bit 3 to move forwards simultaneously, the drill bit 3 abuts against the rock face 20, and the hydraulic cylinders 12 are connected in series in the same oil way, so that the drill bits 3 can be ensured to be prepared to abut against the rock face 20.

After each drill bit 3 abuts against the rock face 20, the hydraulic motor 14 starts to work, and when the output main shaft 141 of the hydraulic motor 14 rotates, the connecting sleeve 7 is driven to rotate around the central axis of the connecting sleeve, so that the stable drill rod 2 is driven to rotate around the central axis of the connecting sleeve, and the drilling of the drill bits 3 is realized. Because the water vapor sealing sleeve 8 is fixed with the connecting support base 13, when the connecting sleeve 7 rotates, the water vapor sealing sleeve 8 does not rotate. At this time, water, gas or a water-gas mixture is supplied to the water-gas hole 5 through the water-gas pipe 10 for slag discharge.

In the drilling process of the drill bit 3, the piston rod 121 of the hydraulic cylinder 12 continues to advance until the front half section of the conical surface 4 enters the positioning hole, the conical surface 4 is firmly clamped in the positioning hole, and the stable drill rod 2 is positioned by matching with the guiding and stabilizing seat 1.

After each stable drill rod 2 is positioned, the front end of the drill frame 16 can be positioned under the combined action, so that the front end of the drill barrel 17 is prevented from shaking when drilling, the drill barrel 17 cannot deviate from the axial position, and the drill barrel 17 is effectively ensured to stably realize coaxial rotation.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The stabilizing member is characterized by comprising a guide stabilizing seat (1) with a guide hole, a stabilizing drill rod (2) in sliding fit with the guide hole, a power unit for driving the stabilizing drill rod (2) to rotate around the central axis of the power unit and a driving unit for enabling the stabilizing drill rod (2) to axially move, wherein a drill bit (3) is arranged at the front end of the stabilizing drill rod (2).

2. The stabilizing member according to claim 1, wherein the front end of the stabilizing drill rod (2) has a conical surface (4), the drill bit (3) is located at the front end of the conical surface (4), the outer diameter of the conical surface (4) gradually increases from front to back, the maximum outer diameter of the drill bit (3) is smaller than the maximum outer diameter of the conical surface (4), and the maximum outer diameter of the drill bit (3) is larger than the minimum outer diameter of the conical surface (4).

3. The stabilizing member according to claim 1 or 2, wherein the stabilizing drill rod (2) has an axially extending water and air hole (5) therein, the front end of the water and air hole (5) is arranged through the drill bit (3), and the rear end of the stabilizing drill rod (2) is connected with a water and air supply unit for supplying water and air.

4. The stabilizing member according to claim 3, wherein the water and gas supply unit comprises a connecting sleeve (7) with a connecting hole (6), a water and gas sealing sleeve (8) sleeved on the connecting sleeve (7) and rotationally matched with the connecting sleeve (7), an annular groove (9) arranged on the inner side of the water and gas sealing sleeve (8), and a water and gas pipe (10) arranged on the water and gas sealing sleeve (8) and communicated with the annular groove (9), wherein a flow guide hole (11) used for communicating the annular groove (9) with the connecting hole (6) is formed in the connecting sleeve (7), the rear end of the stabilizing drill rod (2) is connected in the connecting hole (6), and the water and gas hole (5) is communicated with the connecting hole (6).

5. The stabilizing member according to claim 4, wherein the driving unit is a hydraulic cylinder (12), a piston rod (121) of the hydraulic cylinder (12) is parallel to the stabilizing drill rod (2), a connecting support base (13) is fixedly connected to the front end of the piston rod (121), the power unit is arranged on the supporting connection base, and the water-gas sealing sleeve (8) is fixedly connected with the supporting connection base.

6. A stabilizing member according to claim 4, characterized in that the power unit is a hydraulic motor (14), the output spindle (141) of the hydraulic motor (14) being connected to the connecting sleeve (7), the output spindle (141) being arranged coaxially with the drill bit (3).

7. A drilling tool comprising a drilling rig (16) and a drill shaft (17) arranged on the drilling rig (16), characterized in that the drilling rig (16) is provided with at least two stabilizing members as claimed in claim 5, the guiding stabilizer (1) and the drive unit of which are fixed on the drilling rig (16), and the drill rods of which are parallel to the drill shaft (17).

8. The drilling tool according to claim 7, characterized in that the drilling frame (16) is provided with a guide rail (19) parallel to the stabilizing drill rod (2), and the connecting support base (13) is fixedly connected with a slide block which is in sliding fit with the guide rail (19).

9. The drilling tool as claimed in claim 7 or 8, wherein the number of stabilizing members is 2-4.

10. The drilling tool according to claim 9, wherein the stabilizing members are three, two of which are located on the left side of the drilling rig (16) and the other stabilizing member is located on the right side of the drilling rig (16).