CN115853447A - Rod replacing device and rod replacing method for drilling machine - Google Patents

Abstract

The invention discloses a drilling machine rod replacing device and a drilling machine rod replacing method, which relate to the technical field of engineering machinery and comprise a drilling machine main body, a drilling rod library, a rod replacing unit and a control system; a first storage groove and a second storage groove of the drill pipe storage; the second storage groove is communicated with the first storage groove; a plurality of limiting assemblies are arranged in the first storage groove; the end part of the second storage groove, which is far away from the first storage groove, is adjacent to the drilling machine main body; the rod changing unit comprises a selecting mechanism and a shifting mechanism; the selecting mechanism can move one limiting component to a first target position; the shifting mechanism can drive the drill rod to be replaced to move to a first target position or a second target position along the length extending direction of the second storage groove; the invention realizes automatic rod replacement, and saves the workload of workers; meanwhile, the first storage groove is communicated with the second storage groove, different drill rods can be replaced according to requirements, and the applicability is stronger; the rod changing unit is matched with the drill stem warehouse, so that the action amount of the drill rod is relatively small in the rod changing process, and the safety is high.

Description

Rod replacing device and rod replacing method for drilling machine

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a drilling machine rod replacing device and a drilling machine rod replacing method.

Background

The drilling machine is a mechanical device which drives a drilling tool to drill underground to obtain physical geological data in exploration or development of mineral resources (including solid ores, liquid ores, gas ores and the like), and is also called a drilling machine. The main function of the device is to drive the drilling tool to break rock at the bottom of the hole and to put in or put out the drilling tool in the hole.

The length of each drill rod is generally between several meters and dozens of meters, and in order to meet the requirement that the depth of a formed hole is generally between ten meters and dozens of meters, a plurality of drill rods are required to be connected with each other through a tool, so that the operation of replacing the drill rods is required in the drilling process; in order to reduce the labor intensity of workers, the existing rod replacement technology mostly adopts an automatic rod replacement mode, generally a drill rod is stored through a rod storage device, and the rod replacement is carried out through the movement of the rod storage device or further combining with other auxiliary devices, but the rod storage device in the prior art has complicated structure and large mass, and the action amplitude of the rod storage device and other auxiliary devices in the rod replacement process is large, so that the rod replacement process has various steps and slow rod replacement speed; and the energy consumption is high, and the safety is low.

Chinese patent with application number CN202011240899.6 discloses an automatic rod changing device, which comprises a drilling device, a rod storage device and a driver, wherein the drilling device comprises a pushing beam and a pushing unit, and the pushing unit is connected to the pushing beam and can move up and down along the pushing beam; the rod storage device is correspondingly arranged on the side part of the drilling device, the rod storage device can be used for placing a plurality of drill rods which are distributed side by side, and the driver can drive the rod storage device to move to the propelling unit or return from the propelling unit so as to convey the drill rods to the drilling device one by one in sequence in place in the working process; above-mentioned patent can realize the automatic pole that trades of rig, has alleviateed workman's intensity of labour, has promoted the speed of pole changing dress pole, and automatic pole changing device simple structure fault rate is low, nevertheless in the use, can only change the drilling rod in proper order, can not select the use as required.

Disclosure of Invention

The invention mainly solves the technical problems that: the drilling machine rod replacing device and the drilling machine rod replacing method can solve the problems in the background technology.

In order to solve the main technical problems, the following technical scheme is adopted:

a rod replacing device of a drilling machine comprises a drilling machine main body, a drill rod warehouse, a rod replacing unit and a control system; the drilling machine main body comprises a support frame and a power head capable of lifting along the support frame; the drill rod storage is used for containing drill rods and comprises a first storage groove and a second storage groove which are linear; the second storage groove is communicated with the first storage groove and forms an included angle with a certain preset angle; a limiting assembly used for enabling the drill rod to keep upright is arranged in the first storage groove; the plurality of limiting assemblies are distributed along the length extending direction of the first storage groove; the end part of the second storage groove far away from the first storage groove is abutted to the drilling machine main body; the rod changing unit comprises a selecting mechanism and a shifting mechanism; the selecting mechanism is arranged on the first storage groove and can move one of the limiting assemblies to a first target position under the action of the control system; the shifting mechanism is positioned between the drilling machine main body and the first storage groove and can drive the drill rod to be replaced to move to a first target position or a second target position along the length extending direction of the second storage groove.

Preferably, the limiting assembly is an arc-shaped holding arm; the number of the arc-shaped holding arms is larger than that of the drill rods in the first storage groove; the widths of the first storage groove and the second storage groove are matched with the outer diameter of the drill rod; the selecting mechanism is a first linear driving assembly; the limiting assembly is installed on a moving part of the first linear driving assembly.

Preferably, the second reservoir tank is in a through tank shape; the bottom of the first storage groove is provided with a through hole; the bottom of the second storage groove is provided with a passing channel which extends along the length direction of the second storage groove and penetrates through the bottom surface of the second storage groove; one end of the through channel is communicated with the through hole; the shifting mechanism comprises a second linear driving assembly and a clamping assembly; the clamping assembly is used for limiting a drill rod to be replaced and can penetrate along the axis of the penetrating hole; one end of the clamping assembly is installed on the moving part of the second linear driving assembly.

Preferably, the diameter of the through hole is smaller than the outer diameter of the drill rod and larger than the outer diameter of the clamping assembly.

Preferably, the clamping assembly is mounted on the moving part of the second linear driving assembly through a mounting arm; the second linear driving assembly is arranged on the support frame; when one end of the mounting arm moves to a position where the second linear driving assembly is close to the support frame, the clamping assembly is far away from the second storage groove and moves to a second target position.

Preferably, the clamping assembly comprises a lifting clamping head, a lifting drive and a cover box; the lifting clamping head comprises an outer sleeve, an inner sleeve rod and a connecting arm; the outer sleeve is connected to the outer side of the inner sleeve rod in a sliding manner; the connecting arm is positioned in the inner sleeve rod, one end of the connecting arm is connected to the top of the outer sleeve, and the other end of the connecting arm is connected with a driving shaft driven by lifting; the cover box covers the outer side of the lifting drive and is connected with the second linear driving assembly; the outer sleeve can pass through the through hole; the inner sleeve rod can move along the passing channel and one end, deviating from the outer sleeve, of the inner sleeve rod is installed on the top plate of the cover box.

Preferably, the diameter of the threaded connection section at the end part of the drill rod is larger than that of the middle part of the drill rod; a limiting hole is formed in the threaded connection section of the drill rod; an anti-rotation component is arranged in the outer sleeve; when the lifting clamping chuck shrinks, the anti-rotation component can be inserted into the limiting hole.

Preferably, the inner sleeve rods are distributed in a ring shape; a guide block is arranged inside the outer sleeve; the inner loop bar can move linearly along the guide block; the outer sleeve is provided with a mounting hole opposite to the limiting hole; the anti-rotation component is a spring pin; the spring pin is horizontally arranged in the mounting hole, and the end part close to the connecting arm is an inclined block; the end part of the inner loop bar, which is far away from the cover box, is provided with a ball; when the inner sleeve rod moves towards the outer sleeve, the ball presses the inclined block, so that one end of the spring pin is clamped into the limiting hole.

Preferably, a pressure sensor is arranged on the contact surface of the limiting assembly and the drill rod; a position sensor which is right opposite to the second target position is arranged on the power head; the control system receives signals of the pressure sensor and the position sensor and drives the selecting mechanism, the power head and the shifting mechanism to act; the control system comprises an operation panel, wherein digital buttons are arranged on the operation panel; the sequence of the plurality of limiting assemblies corresponds to the number of the number button one by one; and when one of the digital buttons is pressed, the corresponding limiting component moves to a first target position.

A method of changing a drill rod comprising the steps of:

automatic rod dismantling:

s1: when the rod replacement operation is needed, the power head drives the used drill rod to move upwards to be separated from the drill rod connected with the power head and positioned in the ground; when the power head drives the used drill rod to move upwards to the top of the support frame, the clamping assembly moves to a second target position under the action of the second linear driving assembly;

s2: the outer sleeve is driven to depart from the inner sleeve rod by the lifting driving action, and the spring pin returns to the inner part of the outer sleeve; the power head drives the used drill rod to move downwards until the used drill rod is sleeved outside the outer sleeve; the outer sleeve is driven to be close to the inner sleeve rod by the lifting driving action, and the spring pin is clamped in the limiting hole; the power head rotates under the action of self power, so that the power head is separated from the used drill rod;

s3: manually operating the operation panel in the process that the power head is separated from the used drill rod, so that an unloaded limiting assembly moves to a first target position;

s4, the second linear driving assembly moves to drive the used drill rod to move towards the second storage groove, the used drill rod is driven to lift and depart from the inner sleeve rod in the moving process, and the spring pin returns; the second linear driving assembly continuously acts until the used drill rod reaches the first storage groove and is in contact with the limiting assembly;

automatic rod loading:

d1: manually operating the operation panel, so that a required limiting assembly moves to a first target position;

d2: the outer sleeve is driven to deviate from the inner sleeve rod by the lifting driving action, and the outer sleeve is clamped in the drill rod to be replaced; the second linear driving assembly drives the drill rod to be replaced to move along the second storage groove;

d3: when the drill rod to be replaced reaches the second target position, the outer sleeve is driven to be close to the inner sleeve rod by lifting driving action, and the spring pin is clamped in the limiting hole; the power head descends and is connected with a drill rod to be replaced under the self rotation action;

d4: the outer sleeve is far away from the inner sleeve rod, the spring pin is far away from the limiting hole at the moment, the power head moves upwards, and the clamping assembly moves to the first target position to be ready.

Compared with the prior art, the automatic rod replacing device applied to the drilling machine has the following advantages:

(1) According to the invention, the rod changing unit, the linear first storage groove and the linear second storage groove are utilized, so that automatic rod changing is realized, and the workload of workers is saved; meanwhile, the drill rods with different heights can be replaced according to requirements due to the communication of the first storage groove and the second storage groove, and the applicability is stronger.

(2) The rod changing unit comprises a selecting mechanism and a shifting mechanism, and the rod changing unit and the drill rod library are matched for use, so that in the rod changing process, the drill rod to be changed and the drill rod motion quantity in the first library groove are relatively small, the change amplitude of the gravity center position is small, the drill rod is not prone to shaking, and the safety is high.

(3) The invention sets the lifting clamping head by means of the thread connection section and the middle section of the drill rod, and the limiting is accurate and safe.

(4) According to the invention, the anti-rotation component is arranged in the outer sleeve, and the drill rod is provided with the limiting hole, so that the drill rod is inhibited from rotating in the process of connecting with the power head, and the need of additionally adding a clamping device is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a schematic view of the overall structure;

FIG. 2 is a schematic top view of the overall structure;

FIG. 3 is a schematic structural view of a drill pipe;

FIG. 4 is a schematic structural diagram of the positions of the clamping assembly and the drill rod when the lifting clamping head is in a stretched state;

FIG. 5 is a partially enlarged view of FIG. 4;

FIG. 6 is a schematic structural diagram of the positions of the clamping assembly and the drill rod when the lifting clamping head is in a contracted state;

fig. 7 is a schematic view of a part of the enlarged structure in fig. 6.

In the figure: 100 is a drilling machine main body, 110 is a support frame, 120 is a power head, 121 is a position sensor, 200 is a drill rod library, 210 is a first library groove, 211 is a through hole, 220 is a second library groove, 221 is a through channel, 230 is a limiting component, 300 is a rod changing unit, 310 is a selecting mechanism, 311 is a first linear driving component, 320 is a shifting mechanism, 321 is a clamping component, 322 is a second linear driving component, 323 is an installation arm, 330 is a lifting clamping head, 340 is a lifting drive, 350 is a cover box, 360 is an installation hole, 3311 is an outer sleeve, 3312 is an inner sleeve rod, 3313 is a connecting arm, 3314 is a guide block, 3315 is a ball, 370 is a spring pin, 371 is an inclined block, 410 is a pressure sensor, 420 is an operation panel, 500 is a drill rod, 510 is a limiting hole, 501 is a threaded connection section, and 502 is an intermediate section.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions.

The first embodiment,

A rod replacing device of a drilling machine comprises a drilling machine main body 100, a drill rod library 200, a rod replacing unit 300 and a control system.

Referring to fig. 1, a drill body 100 includes a stand 110 and a power head 120 that can be raised and lowered along the stand 110; the power head 120 can rotate and lift under the action of the power head; the power configuration (not shown) of the powerhead 120 may be as described in the prior art; the drill rod warehouse 200 is used for containing drill rods 500, and the drill rod warehouse 200 comprises a first warehouse groove 210 and a second warehouse groove 220; the first magazine groove 210 and the second magazine groove 220 are both linear, that is, a plurality of drill rods 500 can only be linearly distributed in the first magazine groove 210 or the second magazine groove 220; the second storage groove 220 is communicated with the first storage groove 210 and forms an included angle with a certain preset angle, and the degree of the included angle is more than 0 degree and less than 180 degrees; the end of the second magazine 220 remote from the first magazine 210 abuts the powerhead 120, the second magazine 220 being in the form of a through slot.

A plurality of limiting assemblies 230 are arranged in the first storage groove 210; a plurality of the limiting assemblies 230 are distributed along the length direction of the first storage groove 210, and the limiting assemblies 230 can keep the drill rod 500 upright; the limiting component 230 refers to an arc-shaped holding arm; the number of the arc arms is larger than that of the drill rods 500 in the first storage groove 210, namely, in the rod replacement process, at least one limiting assembly 230 is in an unloaded state; the widths of the first storage groove 210 and the second storage groove 220 are matched with the outer diameter of the drill rod 500, and when the arc-shaped embracing arm embraces the outer side of the drill rod 500, the drill rod 500 is kept upright under the limit of one side wall of the first storage groove 210; when drill rod 500 is positioned in second magazine 220, both opposing side walls of second magazine 220 contact drill rod 500 so that drill rod 500 remains upright.

Referring to fig. 2, the rod-changing unit 300 includes a selecting mechanism 310 and a shifting mechanism 320; the selecting mechanism 310 is installed on the first storage groove 210, the selecting mechanism 310 is a first linear driving assembly 311, the first linear driving assembly 311 is usually one or more of a slide rail, a gear rack and a hydraulic rod, the limiting assembly 230 is located at a moving part of the first linear driving assembly 311, the selecting mechanism 310 moves one of the limiting assemblies 230 to a first target position under the action of a control system, the first target position is located in the first storage groove 210 and is located on an extension line of the second storage groove 220, specifically, the control system comprises an operating panel 420, and the operating panel 420 is provided with digital buttons; the sequence of the plurality of limiting assemblies 230 corresponds to the number of the number button one by one; when one of the number buttons is pressed, the limiting assembly 230 corresponding to the number button is moved to the first target position, and the number button on the operation panel 420 is manually pressed, so that the actually required drill rod 500 can be quickly moved to the first target position, and the device has strong operability and is simple to operate.

The shifting mechanism 320 is located between the drilling machine main body 100 and the first magazine 210, and as a preferred embodiment, the shifting mechanism 320 is located at the bottom of the second magazine 220, and the shifting mechanism 320 is mainly used for shifting the drill rod 500 to be replaced on the first magazine 210 from a first target position to a second target position, or shifting the used drill rod 500 from the second target position on the drilling machine main body 100 to the first target position, and the second target position is located on the drilling machine main body 100 and is located on the length extension line of the second magazine 220, that is, the shifting mechanism 320 shifts the drill rod 500 located on the first magazine 210 to the drilling machine main body 100 to assist rod loading, or shifts the drill rod 500 located on the drilling machine main body 100 to the first magazine 210 to assist rod unloading.

Referring to fig. 1-2, the bottom of the first storage slot 210 is provided with a through hole 211, the bottom of the first storage slot 210 is provided with a through channel 221, the through channel 221 penetrates through the bottom of the second storage slot 220, the through slot extends along the length direction,

the bottom of the first storage groove 210 is provided with a through hole 211; the bottom of the second storage groove 220 is provided with a passing channel 221 which extends along the length direction and penetrates through the bottom surface of the second storage groove 220; one end of the passing channel 221 extends to the end of the second storage slot 220, and the other end is communicated with the passing hole 211; the displacement mechanism 320 comprises a second linear driving assembly 322 and a clamping assembly 321; the second linear driving assembly 322 is a common linear moving assembly, such as one or more of a slide rail, a rack and pinion, and a hydraulic rod, the clamping assembly 321 is used for limiting the drill rod 500 to be replaced, and the clamping assembly 321 can pass along the axis of the passing hole 211, i.e. in the vertical direction in the drawing; one end of the clamping assembly 321 is mounted on the moving part of the second linear driving assembly 322; specifically, the diameter of the through hole 211 is smaller than the outer diameter of the drill rod 500 and larger than the outer diameter of the clamping assembly 321.

Referring to fig. 2, the clamping assembly 321 is mounted on the moving portion of the second linear driving assembly 322 through a mounting arm 323; the second linear driving assembly 322 is mounted on the supporting frame 110; when one end of the mounting arm 323 moves to a position where the second linear driving assembly 322 is close to the supporting frame 110, the clamping assembly 321 is away from the second storage slot 220 and moves to the second target position, that is, when the clamping assembly 321 moves to the second target position, one end of the mounting arm 323 is always slidably connected to the second linear driving assembly 322.

Referring to fig. 4 and 6, the clamping assembly 321 includes a lifting clamping head 330, a lifting driver 340, and a cover box 350; the lifting clamping head 330 comprises an outer sleeve 3311, an inner sleeve rod 3312 and a connecting arm 3313; the outer sleeve 3311 is connected to the outer side of the inner sleeve rod 3312 in a sliding manner; the connecting arm 3313 is located inside the inner sleeve rod 3312, and has one end connected to the top of the outer sleeve 3311 and the other end connected to the driving shaft of the elevating driver 340; the lifting drive 340 is preferably a hydraulic ram, although other conventional lifting assemblies are possible; the cover case 350 covers the outer side of the lifting drive 340 and is connected with the moving part of the second linear drive assembly 322; the outer sleeve 3311 is capable of passing through the through bore 211; the inner rod 3312 is able to move along the passing channel 221, one end of the inner rod 3312 away from the outer sleeve 3311 is mounted outside the housing 350, when the lifting driver 340 drives the outer sleeve 3311 to move downward, the outer sleeve 3311 moves close to the inner rod 3312, and the lifting chuck 330 is in a retracted state; when the outer sleeve 3311 is driven by the elevating driver 340 to move upward, the outer sleeve 3311 moves away from the housing 350, and the elevating chuck 330 is in a stretched state.

Referring to fig. 3, the drill rod 500 of the present invention has two ends connected to the threaded connection sections 501, and the diameter of the threaded connection section 501 at the end of the drill rod 500 is larger than the diameter of the middle of the drill rod 500; that is, when the outer sleeve 3311 is inserted into the drill rod 500, the stepped surface of the drill rod 500 itself can abut against the end surface of the outer sleeve 3311, thereby suppressing the drill rod 500 from continuously sliding along the circumferential surface of the outer sleeve 3311.

Example II,

Referring to fig. 4-6, the difference between the second embodiment and the first embodiment is that, on the basis of the first embodiment, a limit hole 510 is formed in the threaded connection section 501 of the drill rod 500; an anti-rotation component is arranged in the outer sleeve 3311; after the lifting clamping head 330 is contracted, the anti-rotation component can be inserted into the limiting hole 510; prevent changeing the setting of subassembly, spacing hole 510 for when the relative drilling rod 500 of unit head 120 rotatory dress pole or tear the pole open, can restrain drilling rod 500's rotation, avoid additionally setting up clamping device.

Referring to fig. 4-6, in particular, a plurality of inner rods 3312 are annularly arranged; a guide block 3314 is arranged inside the outer sleeve 3311; the inner rod 3312 is linearly movable along a guide block 3314; the outer sleeve 3311 is provided with a mounting hole 360 opposite to the limiting hole 510; the anti-rotation component is a spring pin 370; the spring pin 370 is horizontally arranged in the mounting hole 360, and the end part close to the connecting arm 3313 is provided with an inclined block 371; the end of the inner loop bar 3312 departing from the cover box 350 is provided with a ball 3315; when the lift snap 330 is retracted, the ball 3315 presses the inclined block 371 so that one end of the spring pin 370 snaps into the stopper hole 510.

Example III,

Referring to fig. 1-2, the difference between the third embodiment and the second embodiment is that, on the basis of the second embodiment, a pressure sensor 410 is installed on the contact surface of the limiting assembly 230 and the drill rod 500; a position sensor 121 facing a second target position is arranged on the power head 120; the control system receives signals of the pressure sensor 410 and the position sensor 121 and drives the selecting mechanism 310, the power head 120 and the shifting mechanism 320 to act; pressure sensor 410 is capable of sensing the movement of the removed drill pipe 500 to a first target position; the position sensor 121 is capable of sensing a desired movement of the drill rod 500 to the second target position.

A method of changing a drill rod comprising the steps of:

automatic rod dismantling:

s1: when the rod replacement operation is needed, the power head 120 drives the used drill rod 500 to move upwards to be separated from the drill rod 500 connected with the power head and located in the ground; when the power head 120 drives the used drill rod 500 to move upwards to the topmost part of the support frame 110, the clamping assembly 321 moves to a second target position under the action of the second linear driving assembly 322;

s2: the elevating driver 340 is actuated to make the elevating chuck 330 in a stretched state, and the spring pin 370 is returned to the outer sleeve 3311; the power head 120 drives the used drill rod 500 to move downwards until the used drill rod 500 is sleeved on the outer side of the outer sleeve 3311; the lifting drive 340 acts to make the lifting clamping head 330 in a compressed state, and at the moment, the spring pin 370 is clamped in the limiting hole 510; the power head 120 rotates under its own power, thereby detaching the power head 120 from the used drill rod 500;

s3: manually operating the operating panel 120 to move an empty stop assembly 230 to a first target position during disengagement of the power head 120 from a used drill rod 500;

s4, the second linear driving assembly 322 acts to drive the used drill rod 500 to move towards the second storage groove 220, the lifting drive 340 acts to enable the lifting clamping head 330 to be in a stretching state in the process of moving to be in contact with the second storage groove 220, and at the moment, the spring pin 370 returns; second linear drive assembly 322 continues until used drill rod 500 moves along second magazine 220 and into contact with stop assembly 230 in first magazine 210;

automatic rod loading:

d1: manually operating the operation panel 120, so as to move a desired position-limiting component 230 to a first target position;

d2: the elevating driver 340 moves to make the elevating chuck 330 in a stretching state, and the outer sleeve 3311 passes through the through hole 211 to be clamped into the drill rod 500 to be replaced; the second linear driving assembly 322 drives the drill rod 500 to be replaced to move along the second storage slot 220;

d3: after the drill rod 500 to be replaced reaches the second target position, the lifting drive 340 acts to enable the lifting clamping head 330 to be in a contraction state, and the spring pin 370 is clamped into the limiting hole 510; the power head 120 descends and completes connection with the drill rod 500 to be replaced under the self rotation action;

d4: the outer sleeve 3311 is away from the inner sleeve rod 3312, the spring pin 370 is away from the position-limiting hole 510, the power head 120 moves upward, and the chuck assembly 321 moves to the first target position to stand by.

It should be noted that the terms "upper, lower, left, right, inner and outer" in the present invention are defined based on the relative positions of the components in the drawings, and are only used for clarity and convenience of the technical solution, and it should be understood that the application of the terms of orientation does not limit the scope of the present application.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a rig trades pole device which characterized in that: the drilling machine comprises a drilling machine main body, a drill rod library, a rod replacing unit and a control system; the drilling machine main body comprises a support frame and a power head capable of lifting along the support frame; the drill rod storage is used for containing drill rods and comprises a first storage groove and a second storage groove which are linear; the second storage groove is communicated with the first storage groove and forms an included angle with a certain preset angle; a limiting assembly used for enabling the drill rod to keep upright is arranged in the first storage groove; the plurality of limiting assemblies are distributed along the length extension direction of the first storage groove; the end part, far away from the first storage groove, of the second storage groove is abutted to the drilling machine main body; the rod changing unit comprises a selecting mechanism and a shifting mechanism; the selecting mechanism is arranged on the first storage groove and can move one of the limiting assemblies to a first target position under the action of the control system; the shifting mechanism is positioned between the drilling machine main body and the first storage groove and can drive the drill rod to be replaced to move to the first target position or the second target position along the length extending direction of the second storage groove.

2. The drilling machine rod changing device according to claim 1, wherein the limiting assembly is an arc-shaped holding arm; the number of the arc-shaped holding arms is larger than that of the drill rods in the first storage groove; the widths of the first reservoir groove and the second reservoir groove are matched with the outer diameter of the drill rod; the selecting mechanism is a first linear driving assembly; the limiting assembly is installed on a moving part of the first linear driving assembly.

3. The drill rod changing device of claim 1, wherein the second storage slot is a through slot; the bottom of the first storage groove is provided with a through hole; the bottom of the second storage groove is provided with a passing channel which extends along the length direction of the second storage groove and penetrates through the bottom surface of the second storage groove; one end of the through channel is communicated with the through hole; the shifting mechanism comprises a second linear driving assembly and a clamping assembly; the clamping assembly is used for limiting a drill rod to be replaced and can penetrate along the axis of the penetrating hole; one end of the clamping assembly is installed on the moving part of the second linear driving assembly.

4. The drill rod changing device as claimed in claim 3, wherein the diameter of the through hole is smaller than the outer diameter of the drill rod and larger than the outer diameter of the clamping assembly.

5. The drill rod changing device as claimed in claim 3, wherein the clamping assembly is mounted on the moving part of the second linear driving assembly through a mounting arm; the second linear driving assembly is arranged on the support frame; when one end of the mounting arm moves to a position where the second linear driving assembly is close to the support frame, the clamping assembly is far away from the second storage groove and moves to a second target position.

6. The drilling machine rod changing device as claimed in claim 5, wherein the clamping assembly comprises a lifting clamping head, a lifting drive and a cover box; the lifting clamping head comprises an outer sleeve, an inner sleeve rod and a connecting arm; the outer sleeve is connected to the outer side of the inner sleeve rod in a sliding manner; the connecting arm is positioned in the inner sleeve rod, one end of the connecting arm is connected to the top of the outer sleeve, and the other end of the connecting arm is connected with a driving shaft driven by lifting; the cover box covers the outer side of the lifting drive and is connected with the second linear drive assembly; the outer sleeve can pass through the through hole; the inner sleeve rod can move along the passing channel and one end, deviating from the outer sleeve, of the inner sleeve rod is installed on the top plate of the cover box.

7. The drill rod changing device as claimed in claim 6, wherein the diameter of the threaded connection section at the end of the drill rod is larger than the diameter of the middle of the drill rod; a limiting hole is formed in the threaded connection section of the drill rod; an anti-rotation component is arranged in the outer sleeve; when the lifting clamping chuck shrinks, the anti-rotation component can be inserted into the limiting hole.

8. The drill rod changing device as claimed in claim 7, wherein the inner sleeve rod is provided in plurality and distributed annularly; a guide block is arranged inside the outer sleeve; the inner loop bar can move linearly along the guide block; the outer sleeve is provided with a mounting hole opposite to the limiting hole; the anti-rotation component is a spring pin; the spring pin is horizontally arranged in the mounting hole, and the end part close to the connecting arm is an inclined block; the end part of the inner loop bar, which is far away from the cover box, is provided with a ball; when the inner sleeve rod moves towards the outer sleeve, the ball presses the inclined block, so that one end of the spring pin is clamped into the limiting hole.

9. The device for changing the drill rod of the drilling machine as claimed in any one of claims 1 to 8, wherein a pressure sensor is arranged on the contact surface of the limiting assembly and the drill rod; a position sensor which is right opposite to the second target position is arranged on the power head; the control system receives signals of the pressure sensor and the position sensor and drives the selecting mechanism, the power head and the shifting mechanism to act; the control system comprises an operation panel, wherein a digital button is arranged on the operation panel; the sequence of the plurality of limiting assemblies corresponds to the number of the number button one by one; and when one of the digital buttons is pressed, the corresponding limiting component moves to the first target position.

10. A rod changing method for a drilling machine, which is based on the rod changing device for the drilling machine of claim 8, and comprises the following steps:

automatic rod dismantling:

s1: when the rod replacement operation is needed, the power head drives the used drill rod to move upwards to be separated from the drill rod connected with the power head and positioned in the ground; when the power head drives the used drill rod to move upwards to the topmost part of the support frame, the clamping assembly moves to a second target position under the action of the second linear driving assembly;

s2: the outer sleeve is driven to depart from the inner sleeve rod by the lifting driving action, and the spring pin returns to the inner part of the outer sleeve; the power head drives the used drill rod to move downwards until the used drill rod is sleeved outside the outer sleeve; the outer sleeve is driven to be close to the inner sleeve rod by the lifting driving action, and the spring pin is clamped in the limiting hole; the power head rotates under the action of self power, so that the power head is separated from the used drill rod;

s3: manually operating the operation panel in the process that the power head is separated from the used drill rod, so that an unloaded limiting assembly moves to a first target position;

s4, the second linear driving assembly moves to drive the used drill rod to move towards the second storage groove, the used drill rod is driven to lift and depart from the inner sleeve rod in the moving process, and the spring pin returns; the second linear driving assembly continuously acts until the used drill rod reaches the first storage groove and is in contact with the limiting assembly;

automatic rod loading:

d1: manually operating the operation panel, so that a required limiting component moves to a first target position;

d2: the outer sleeve is driven to deviate from the inner sleeve rod by the lifting driving action, and the outer sleeve is clamped in the drill rod to be replaced; the second linear driving assembly drives the drill rod to be replaced to move along the second storage groove;

d3: when the drill rod to be replaced reaches the second target position, the outer sleeve is driven to be close to the inner sleeve rod by lifting driving action, and the spring pin is clamped in the limiting hole; the power head descends and is connected with a drill rod to be replaced under the self rotation action;

d4: the outer sleeve is far away from the inner sleeve rod, the spring pin is far away from the limiting hole at the moment, the power head moves upwards, and the clamping assembly moves to the first target position to be ready.

Images