Drilling machine capable of automatically backfilling drilling slag

Abstract

The invention discloses an automatic drilling slag backfilling drilling machine which comprises a machine base, a drill rod is arranged on the machine base, the drill rod can ascend, descend and rotate, a drill bit is arranged at the bottom end of the drill rod, a connecting plate is further arranged on the machine base, the drill rod penetrates through the connecting plate, slag pushing plates are arranged at the bottom of the connecting plate, and at least two slag pushing plates are arranged around the drill rod. And a driving mechanism is further arranged on the connecting plate and can drive the slag pushing plates to be closed mutually so as to push the drilling slag into the drill hole. After drilling is completed and the drill rod is pulled out, the multiple slag pushing plates can be driven to be closed through the driving mechanism, and therefore the slag pushing plates can automatically push the soil back into the hole. Compared with the prior art, the driving mechanism and the slag pushing plate are arranged on the drilling machine, so that automatic backfilling of soil is achieved, and the problem that the construction period is affected due to low efficiency caused by manual backfilling is solved.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, in particular to a drilling machine with automatic backfilling of drilling slag. Background Art

[0002] Drilling machine is a general term for machines and equipment that use a tool that is harder and sharper than the target object to leave a cylindrical hole or hole on the target object by rotating cutting or rotating extrusion. It is also called drilling machine, punching machine, drilling machine, through-hole machine, etc.

[0003] When installing guardrails on the side of the road, it is necessary to drill the ground with a drilling machine to obtain the guardrail installation hole. There is often a green belt next to the guardrail, so after the drilling is completed, the drilling slag needs to be filled back into the hole manually, and then grass seeds need to be sown to prevent the drilling slag from covering the grass seeds. However, the manual backfilling method is inefficient and increases the construction period. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a drilling machine with automatic backfilling of drilling slag.

[0005] The objective of the present invention is achieved through the following technical solutions: A drilling machine for automatic backfilling of drill cuttings comprises a machine base, a drill rod is arranged on the machine base, the drill rod can be lifted and rotated, a drill bit is arranged at the bottom end of the drill rod, a connecting plate is also arranged on the machine base, the drill rod passes through the connecting plate, a slag pushing plate is arranged at the bottom of the connecting plate, at least two slag pushing plates are arranged around the drill rod, and a driving mechanism is also arranged on the connecting plate, which can drive a plurality of the slag pushing plates to close each other so as to push the drill cuttings into the drill hole.

[0006] Preferably, an annular soundproof cover is also provided at the bottom of the connecting plate.

[0007] Preferably, an atomizing nozzle is also provided at the bottom of the connecting plate, and the atomizing nozzle is connected to a water source.

[0008] Preferably, a control arm is provided on the machine base, a mounting plate is provided at the end of the control arm, the drill rod is provided on the mounting plate, a mounting block is movably provided on the mounting plate, the drill rod is provided on the mounting block, and the drill rod is rotated by a motor.

[0009] Preferably, the annular sound insulation cover is made of rubber.

[0010] Preferably, a water tank is provided on the machine base, and the atomizing nozzle is connected to the water tank through a pipeline.

[0011] Preferably, there are two opposing slag pushing plates, and the driving mechanism comprises two push rods, and the two push rods are respectively connected to the two slag pushing plates.

[0012] Preferably, the number of the slag pushing plates is greater than two, and each of the slag pushing plates is adapted to be able to move radially, and elastic members are connected between adjacent slag pushing plates, so that a slag containing cavity is formed between the plurality of slag pushing plates; the driving mechanism comprises a rotatable driving plate, a plurality of cam grooves are opened in the circumferential direction of the driving plate, the plurality of cam grooves correspond one-to-one to the plurality of slag pushing plates, and a connecting rod is provided on the slag pushing plate, and the connecting rod extends into the corresponding cam groove; by controlling the rotation direction of the driving plate, the automatic backfilling drilling machine for drill slag has at least the following usage modes: an expansion mode, in which the driving plate rotates forward and causes the plurality of slag pushing plates to open each other; a slag pushing mode, in which the driving plate reverses and causes the plurality of slag pushing plates to close each other.

[0013] Preferably, a clutch mechanism is provided on the drive plate, and the clutch mechanism is adapted to releasably couple the drive plate to the drill rod. A trigger mechanism is provided in the slag containing chamber, and the trigger mechanism is adapted to be squeezed by the drill slag and enable the clutch mechanism to enter an engaged state.

[0014] Preferably, the clutch mechanism includes a clutch block which is elastically arranged on the inner hole wall of the driving plate in a radial direction, and the trigger mechanism includes a trigger rod which is elastically arranged on the bottom surface of the connecting plate in a vertical direction, the trigger rod is opposite to the clutch block, and a wedge surface structure is adapted between the trigger rod and the clutch block; the trigger rod is also adapted to be squeezed by the drill bit as the drill rod rises.

[0015] The beneficial effects of the present invention are: 1. When the drilling is completed and the drill rod is pulled out, the driving mechanism can be used to drive several slag pusher plates to close each other, so that the slag pusher plates can automatically push the soil back into the hole. Compared with the prior art, the present invention realizes automatic backfilling of soil by setting a driving mechanism and slag pusher plates on the drilling rig, avoiding the problem of low efficiency and affecting the construction period by manual backfilling.

[0016] 2. A water tank is arranged on the machine base, and the water tank is connected to the atomizing nozzle pipe at the bottom of the connecting plate. When drilling, the atomizing nozzle can settle the dust generated by drilling, so that the present invention has a dust reduction effect.

[0017] 3. The noise reduction effect of the drilling rig is achieved through the annular sound insulation cover.

[0018] 4. A slag chamber with variable volume is formed by the cooperation of the slag pusher plate, the elastic member and the driving mechanism. On the one hand, the size of the chamber can be adaptively adjusted according to the volume of the drill cuttings. On the other hand, the slag pusher plate and the elastic member also have the effect of sound insulation and noise reduction, so there is no need to set up an additional annular sound insulation cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment; Figure 2 It is a structural schematic diagram of an atomizing nozzle; Figure 3 is a schematic diagram of the structure of the ejector rod; Figure 4 It is a structural schematic diagram of the driving board; Figure 5 Schematic diagram of the change of the slag chamber (arrows indicate the directions in which the slag pusher plates open to each other, and the expanded slag chamber is indicated in dotted lines); Figure 6 Schematic diagram of top view of the driving plate; Figure 7 for Figure 4 Enlarged view of part A.

[0020] Figure numerals: 1. base; 2. drill rod; 3. drill bit; 4. connecting plate; 5. slag pusher plate; 6. driving mechanism; 7. annular sound insulation cover; 8. atomizing nozzle; 9. control arm; 10. mounting plate; 11. mounting block; 12. water tank; 13. push rod; 14. elastic member; 15. slag chamber; 16. driving plate; 17. cam groove; 18. connecting rod; 19. clutch mechanism; 20. trigger mechanism; 21. clutch block; 22. trigger rod; 23. countersunk hole; 24. trigger ring. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 7As shown, a drilling machine for automatic backfilling of drill residues includes a machine base 1, for example, the machine base 1 can be a car-type machine base 1, which is easy to move by means of an internal combustion engine or other power sources. A control arm 9 is arranged on the machine base 1, and the control arm 9 can refer to the arm-shaped components of equipment such as excavators in the prior art, and in particular, the control arm 9 can be lifted or lowered in the form of a hydraulic rod. A mounting plate 10 is arranged at the end of the control arm 9, and a mounting block 11 is movably arranged on the mounting plate 10. For example, a lead screw moving mechanism or a linear motor module can be arranged on the mounting plate 10 to realize the movement of the mounting block 11, and a drill rod 2 is arranged on the mounting block 11, and the drill rod 2 can be rotated by the drive of the motor.

[0023] When drilling, the machine base 1 moves to the drilling area, and then the hydraulic rod drives the control arm 9 to lower the mounting plate 10 together with the drill rod 2. The drill rod 2 is rotated by the motor, and the drill rod 2 is also lowered by the transfer mechanism on the mounting plate 10, so that the drill bit 3 at the bottom end of the drill rod 2 can drill the target position.

[0024] In special drilling scenarios, drilling and sowing grass seeds need to be carried out simultaneously to shorten the construction period. The drill cuttings will accumulate around the hole. If they are not processed, the drill cuttings will easily press on the grass seeds and reduce their survival rate. In traditional methods, the drill cuttings need to be manually recycled into the hole, but this method is inefficient and will increase the construction period.

[0025] See also Figure 1 , Figure 2 , Figure 3 In view of the above technical problems, in the present disclosure, a connecting plate 4 is provided on the bottom end of the mounting plate 10, and the drill rod 2 passes through the connecting plate 4. A slag pusher plate 5 and a driving mechanism 6 are provided at the bottom of the connecting plate 4. At least two slag pushers 5 are provided around the drill rod 2, that is, a plurality of slag pushers 5 are distributed circumferentially around the drill rod 2; the driving mechanism 6 is adapted to be able to drive a plurality of slag pushers 5 to close each other, so that the slag pushers 5 can automatically push the drill slag on the circumference of the hole into the hole.

[0026] In some embodiments, there are two slag pusher plates 5, and the two slag pusher plates 5 are symmetrically arranged. In the closed state, the two slag pusher plates 5 are preferably assembled to form a complete cylindrical structure. For example, each slag pusher plate 5 is a semicircular arc plate, and the two slag pusher plates 5 can form a cylindrical structure after being assembled. The driving mechanism 6 includes two push rods 13, which can be hydraulic push rods 13 or electric push rods 13, and the two push rods 13 are respectively connected to the two slag pusher plates 5.

[0027] When the drilling is completed and the drill rod 2 is pulled out, the two push rods 13 brake the two slag pushing plates 5 to move closer to each other, and the two continuously closing slag pushing plates 5 can push the drilling slag around the hole back into the hole.

[0028] For example, a track (not shown) may be provided on the bottom surface of the connecting plate 4, and the slag pusher plate 5 is slidably adapted on the guide rail to achieve a more stable sliding state. An annular soundproof cover 7 may also be provided on the bottom surface of the connecting plate 4, and the annular soundproof cover 7 may be made of rubber, so that the annular soundproof cover 7 can be closely attached to the ground, and the drill rod 2 extends into the annular soundproof cover 7 to drill the ground.

[0029] An atomizing nozzle 8 is also provided on the bottom surface of the connecting plate 4. For example, the connecting plate 4 may be a hollow structure, and the atomizing nozzle 8 is embedded in the bottom of the connecting plate 4 without protruding from the bottom surface of the connecting plate 4. The atomizing nozzle 8 is adapted to be connected to a water source. During the drilling process, the atomizing nozzle 8 can spray water mist into the annular sound insulation cover 7 to achieve a dust reduction effect.

[0030] In a preferred example, a water tank 12 is provided on the base 1, and the atomizing nozzle 8 is connected to the water tank 12 through a pipeline. Thus, the water tank 12 can provide a water source for the atomizing nozzle 8 without additionally looking for an external water source.

[0031] For example, two push rods 13 can be installed on the same side of the annular soundproof cover 7, and two sets of push rods 13 are connected to each slag pusher plate 5. In detail, two connecting ears can be arranged opposite to each other on the slag pusher plate 5, and each connecting ear is connected to a push rod 13. A through hole for the push rod 13 to extend into can be provided on the annular soundproof cover 7, and in the specific braking process, the two push rods 13 can execute different ejection directions. Figure 3 For example, the push rod 13 corresponding to the left slag pushing plate 5 performs an action of pushing out to the right, while the push rod 13 corresponding to the right slag pushing plate 5 performs an action of retracting to the left, thereby realizing the mutual closure of the two slag pushing plates 5.

[0032] See also Figures 4 to 7 In other embodiments, the number of the slag pusher plates 5 is greater than two, and each slag pusher plate 5 is adapted to be able to move in the radial direction. Figure 5 Preferably, an example is shown in which six slag pusher plates 5 are distributed along the circumferential direction, and an elastic member 14 is connected between adjacent slag pusher plates 5. For example, the elastic member 14 may be a structure similar to a bellows, or the elastic member 14 may also be an elastic sleeve, and the six slag pusher plates 5 are simultaneously attached to the same elastic sleeve. It can be understood that by controlling the movement of the slag pusher plates 5, for example, closing or opening several slag pusher plates 5 at the same time, a slag containing cavity 15 with adjustable volume will be formed between the several slag pusher plates 5.

[0033] The driving mechanism 6 preferably includes a driving plate 16 rotatably arranged on the connecting plate 4. In detail, a plurality of cam grooves 17 are provided on the driving plate 16 along the circumferential direction, and the plurality of cam grooves 17 correspond to the plurality of slag pushing plates 5 one by one. In addition, a connecting rod 18 is also provided on the slag pushing plate 5, and the connecting rod 18 extends into the corresponding cam groove 17. It can be imagined that by rotating the driving plate 16, the cam groove 17 will rotate accordingly, and since the slag pushing plate 5 is restricted in the sliding direction and cannot rotate, the connecting rod 18 will be pushed in the cam groove 17, thereby driving the slag pushing plate 5 to slide. The specific sliding direction of the slag pushing plate 5 can be understood to be achieved by selecting the forward and reverse rotation of the driving plate 16.

[0034] Therefore, by controlling the rotation direction of the driving plate 16, the automatic backfill drilling machine for drilling slag disclosed in the present invention has at least the following usage modes: 1. Expansion mode: in this mode, the drilling machine is in the drilling state, and the drill cuttings will gradually flow into the slag chamber 15. When the drill cuttings in the slag chamber 15 are filled, the driving plate 16 can be controlled to rotate forward, thereby driving a plurality of slag pushing plates 5 to open each other, thereby expanding the slag chamber 15 to accommodate more drill cuttings.

[0035] 2. Slag pushing mode, in which the drilling machine completes drilling and the drill rod 2 rises and exits the hole. At this time, the driving plate 16 can be controlled to reverse, thereby driving a plurality of slag pushing plates 5 to close each other, thereby automatically filling the drill slag in the slag chamber 15 back into the hole.

[0036] Among them, the expansion mode enables the drilling machine disclosed in the present invention to automatically adjust the size of the slag chamber 15 according to the volume of the drill cuttings. This is even more beneficial for improving the service life of the elastic member 14. It can be imagined that if the slag chamber 15 is always kept in the maximum state, the elastic member 14 is always in the ultimate tensile state, and it is more likely to be damaged due to fatigue. In the present disclosure, the slag chamber 15 can be adaptively increased according to the volume of the drill cuttings, and the fatigue of the elastic member 14 is improved. In addition, by combining the slag pusher plate 5 with the elastic member 14, the slag chamber 15 itself has sound insulation and noise reduction effects.

[0037] In a possible example, the drilling machine of the present disclosure may also have: 3. Slag clearing mode, in which the pre-order mode of the drilling machine is the slag pushing mode, in particular, a number of slag pushing plates 5 will be closed until the inner hole of the slag chamber 15 is engaged with the hole. Then, the drill rod 2 can be controlled to descend again, and the drill rod 2 can push the drill slag remaining in the slag chamber 15 into the hole to prevent the drill slag from remaining.

[0038] In a specific example, the rotation of the driving plate 16 can be achieved by a driving source such as a motor. More preferably, a clutch mechanism 19 can be provided on the driving plate 16, and the clutch mechanism 19 is adapted to releasably couple the driving plate 16 to the drill rod 2, thereby driving the driving plate 16 to rotate by the rotation of the drill rod 2. In addition, a trigger mechanism 20 is also provided in the slag chamber 15, and the trigger mechanism 20 is adapted to be squeezed by the drill slag, and thereby control the above-mentioned clutch mechanism 19 to enter an engaged state. The drilling machine disclosed in the present invention may have the following use process: S1. Arrange the machine base 1 to the target position, and realize the drilling of the ground by the drill bit 3 by rotating and lowering the drill rod 2. During this period, the drill rod 2 and the drill bit 3 are both contained in the slag chamber 15 to achieve noise isolation. As the drilling proceeds, the drill slag continuously flows into the slag chamber 15, and the clutch mechanism 19 is in a disengaged state.

[0039] S2, the drilling slag volume in the slag chamber 15 exceeds the threshold value, the trigger mechanism 20 will be squeezed by the drilling slag, and then the clutch mechanism 19 will be controlled to enter the engagement state. Under the coupling transmission of the clutch mechanism 19, the drill rod 2 will drive the driving plate 16 to rotate, and then drive the plurality of slag pushing plates 5 to open each other to achieve the expansion of the slag chamber 15. Then, the squeezing force of the drilling slag on the trigger mechanism 20 is reduced, and the drilling machine re-enters S1 and circulates between S1 and S2.

[0040] S3, after the drilling is completed, the drill rod 2 is controlled to rise, and then the drilling machine is switched to the slag pushing mode. At the same time, the drill rod 2 can be controlled to rotate in the opposite direction to that in S2, so as to drive a plurality of slag pushing plates 5 to close each other and push the drill slag into the hole.

[0041] S4, control the drill rod 2 to go down again to push the remaining drilling cuttings in the cutting chamber 15 into the hole.

[0042] In some examples, the clutch mechanism 19 may be an electric clutch (not shown), and the trigger mechanism 20 may be a pressure sensor or a distance sensor (not shown) disposed on the bottom surface of the connecting plate 4. The electric clutch is a prior art, which is known to those skilled in the art, so it will not be described in detail. In short, the electric clutch may include a moving engagement component and a transfer component, and the moving engagement component is pressed against the drill hole by the transfer component to achieve power transmission in the form of friction. The transfer component may be an electromagnetic mechanism or a conventional ejection mechanism.

[0043] In the above S1, as the drill cuttings continue to flow into the cutting chamber 15, the drill cuttings can squeeze the pressure sensor to send out an electrical signal, or the distance sensor can monitor the distance between the connecting plate 4 and the top surface of the drill cuttings. When the monitoring distance is less than the threshold, the distance sensor will also send out an electrical signal. The transfer component of the electric clutch can receive the electrical signal, or trigger the electrical signal through the relay controller, so that the mobile engagement component enters the engagement state with the drill rod 2.

[0044] As another solution, the clutch mechanism 19 preferably includes a clutch block 21 that is elastically arranged on the inner hole wall of the drive plate 16 in the radial direction, and the trigger mechanism 20 includes a trigger rod 22 that is elastically arranged on the bottom surface of the connecting plate 4 in the vertical direction, and the trigger rod 22 is opposite to the clutch block 21 and a wedge surface structure is adapted between the two. Among them, the wedge surface structure is an existing structure that realizes the change of thrust direction through two matching inclined surfaces. Specifically in this example, the upward ejection of the trigger rod 22 can drive the clutch block 21 to be pushed inward through the wedge surface structure, and then the clutch block 21 can abut against the drill rod 2 to realize the power coupling between the drive plate 16 and the drill rod 2.

[0045] The trigger rod 22 can be pushed upward by the drilling slag that flows into the slag chamber 15 and exceeds the threshold. The detailed process is as follows: As the drill cuttings flow into the slag chamber 15, the drill cuttings will not exert an extrusion force on the trigger rod 22 at this time because the trigger rod 22 is set at the bottom surface of the connecting plate 4; when the slag chamber 15 is filled with drill cuttings, the drill cuttings continue to enter the slag chamber 15 under the action of the drill rod 2, and then push the trigger rod 22 upward to bounce, and then the clutch block 21 is pushed out to abut against the drill rod 2, and the driving plate 16 rotates to drive the slag chamber 15 to expand. Subsequently, the drill cuttings will be separated from the contact with the trigger rod 22 under the action of gravity (here the focus is on describing that the upward extrusion force of the drill cuttings on the trigger rod 22 will be released), and the clutch block 21 will be separated from the drill rod 2, waiting for the drill cuttings to continue to flow into the slag chamber 15.

[0046] In addition, the trigger rod 22 is preferably adapted to be squeezed by the drill bit 3 as the drill rod 2 rises. Therefore, when the drilling is completed, the drill rod 2 rises, the drill bit 3 squeezes the trigger rod 22 to bounce, and the clutch block 21 enters the engagement state again. At this time, the drill rod 2 is controlled to reverse, and the plurality of slag pushers 5 are closed to each other to realize automatic backfilling of the soil.

[0047] In a specific example, a countersunk hole 23 is constructed on the bottom surface of the connecting plate 4, and the drill rod 2 passes through the countersunk hole 23. A trigger ring 24 is elastically arranged in the countersunk hole 23, and the trigger rod 22 is arranged on the trigger ring 24. The drilling slag can realize the upward bounce of the trigger rod 22 by squeezing the trigger ring 24. When the drill rod 2 rises, the drill bit 3 will be retracted into the countersunk hole 23, thereby pushing the trigger ring 24 to drive the trigger rod 22 to bounce upward. In addition, the retraction of the drill bit 3 into the countersunk hole 23 is not easy to interfere with the closing of the slag pusher plate 5.

[0048] The clutch block 21 can be specifically constructed in an arc shape, thereby ensuring that after the driving plate 16 rotates, the clutch block 21 and the trigger rod 22 can still maintain a relative position.

[0049] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A drilling machine for automatic backfilling of drill residues, comprising a machine base (1), a drill rod (2) being arranged on the machine base (1), the drill rod (2) being capable of being raised and lowered and rotated, a drill bit (3) being arranged at the bottom end of the drill rod (2), wherein: The machine base (1) is also provided with a connecting plate (4), the drill rod (2) passes through the connecting plate (4), a slag pushing plate (5) is provided at the bottom of the connecting plate (4), at least two slag pushing plates (5) are provided around the drill rod (2), and a driving mechanism (6) is also provided on the connecting plate (4), and the driving mechanism (6) can drive a plurality of slag pushing plates (5) to close together so as to push the drill slag into the drill hole.

2. The automatic backfill drilling machine for drilling slag according to claim 1 is characterized in that: An annular soundproof cover (7) is also provided at the bottom of the connecting plate (4).

3. The automatic backfill drilling machine for drilling slag according to claim 1 is characterized in that: The bottom of the connecting plate (4) is also provided with an atomizing nozzle (8), and the atomizing nozzle (8) is connected to a water source.

4. The automatic backfill drilling machine for drilling slag according to claim 1 is characterized in that: The machine base (1) is provided with a control arm (9), the end of the control arm (9) is provided with a mounting plate (10), the drill rod (2) is provided on the mounting plate (10), a mounting block (11) is movably provided on the mounting plate (10), the drill rod (2) is provided on the mounting block (11), and the drill rod (2) is rotated by a motor.

5. The automatic backfill drilling machine for drilling slag according to claim 2 is characterized in that: The annular sound insulation cover (7) is made of rubber.

6. The automatic backfill drilling machine for drilling slag according to claim 3 is characterized by: A water tank (12) is provided on the machine base (1), and the atomizing nozzle (8) is connected to the water tank (12) via a pipeline.

7. The automatic drilling machine for backfilling drilling slag according to any one of claims 1 to 7, characterized in that: There are two slag pushing plates (5) arranged opposite to each other, and the driving mechanism (6) comprises two push rods (13), and the two push rods (13) are respectively connected to the two slag pushing plates (5).

8. The automatic backfill drilling machine for drilling slag according to claim 1 is characterized by: The number of the slag pushing plates (5) is greater than two, and each of the slag pushing plates (5) is adapted to be able to move in the radial direction, and an elastic member (14) is connected between adjacent slag pushing plates (5), so that a slag containing cavity (15) is formed between the plurality of slag pushing plates (5); The driving mechanism (6) comprises a rotatably arranged driving plate (16), a plurality of cam grooves (17) are provided on the driving plate (16) along the circumferential direction, the plurality of cam grooves (17) correspond to the plurality of slag pushing plates (5) one by one, the slag pushing plates (5) are provided with connecting rods (18), the connecting rods (18) extend into the corresponding cam grooves (17); By controlling the rotation direction of the driving plate (16), the drilling slag automatic backfilling drilling machine has at least the following usage modes: an expansion mode, in which the driving plate (16) rotates forward and causes the plurality of slag pushing plates (5) to open apart from each other; A slag pushing mode, in which the driving plate (16) is reversed and a plurality of the slag pushing plates (5) are closed to each other.

9. The automatic backfill drilling machine for drilling slag according to claim 8 is characterized in that: The driving plate (16) is provided with a clutch mechanism (19), and the clutch mechanism (19) is adapted to releasably couple the driving plate (16) to the drill rod (2); a trigger mechanism (20) is provided in the slag containing cavity (15), and the trigger mechanism (20) is adapted to be squeezed by the drilling slag and enable the clutch mechanism (19) to enter an engaged state.

10. The automatic backfill drilling machine for drilling slag according to claim 9, characterized in that: The clutch mechanism (19) comprises a clutch block (21) which is elastically arranged on the inner hole wall of the driving plate (16) in a radial direction, and the trigger mechanism (20) comprises a trigger rod (22) which is elastically arranged on the bottom surface of the connecting plate (4) in a vertical direction, the trigger rod (22) is opposite to the clutch block (21), and a wedge surface structure is adapted between the trigger rod (22) and the clutch block (21); The trigger rod (22) is also adapted to be able to be squeezed by the drill bit (3) as the drill rod (2) rises.

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