Drilling and anchoring device

Abstract

The drilling and anchoring device at least comprises a propelling beam, a station switching device, a rock drill, a power head and a propelling device. The propelling device comprises a first mounting plate, a first driving mechanism and a locking mechanism; the station switching device comprises a second mounting plate, a third mounting plate and a second driving mechanism, the second mounting plate and the third mounting plate are parallel, the rock drill is fixedly connected with the second mounting plate, the power head is fixedly connected with the third mounting plate, and the station switching device has a drilling state that the second mounting plate is aligned with the first mounting plate and the third mounting plate is staggered with the first mounting plate; in the anchor rod mounting state, the second mounting plate and the first mounting plate are staggered, and the third mounting plate and the first mounting plate are aligned. And the locking mechanism is used for locking the first mounting plate and the second mounting plate or the third mounting plate. The utility model has the advantages that the cooperative work of drilling and anchor rod mounting procedures is realized in sequence by only aligning the preset holes of the surrounding rock once and switching the stations of the rock drill and the power head, and the construction precision and efficiency are obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel anchor rod supporting technical field, concretely relates to a drilling and anchoring device. BACKGROUND

[0002] In the traditional surrounding rock supporting engineering field, the anchor rod reinforcement technology is a key means to maintain the stability of underground engineering structure, and its construction quality is directly related to the engineering safety and service life. The existing technology usually adopts a phased equipment operation mode: first, the positioning and drilling of the surrounding rock preset hole are completed according to the design parameters through the drilling equipment, and then the grouting and rod body placement operation are carried out by switching to the anchor rod installation equipment. This multi-device alternate construction mode exposes significant technical defects in actual application, especially in the hole alignment link.

[0003] The core problem is concentrated in the precision loss of equipment collaborative operation. Since the drilling equipment and the anchor rod installation equipment belong to independent systems, after completing the drilling process, the anchor rod installation equipment needs to be called twice to reposition the drilled hole. This cross-device spatial coordinate conversion process not only increases the process connection time by 15%-20%, but also causes the cumulative deviation of the hole center axis. Especially in complex geological conditions, the stress redistribution effect of surrounding rock will intensify the hole wall deformation, causing the failure rate of repositioning the hole to increase, forcing the construction party to take measures such as hole expansion correction or hole abandonment. This repeated hole operation not only reduces the construction efficiency, but also may cause the expansion of the surrounding rock loosening circle due to multiple disturbances, forming a vicious cycle of "construction damage-support weakening". SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a drilling and anchoring device that only needs to reposition the surrounding rock preset hole once, realizes the collaborative work of drilling and anchor rod installation processes in turn by switching the rock drill and power head stations, and significantly improves the construction precision and efficiency.

[0005] In order to solve the above technical problems, the technical scheme provided by the utility model is a drilling and anchoring device, which at least includes a pushing beam, a station switching device installed at one end of the pushing beam, a rock drill for drilling the surrounding rock preset hole, a power head for installing an anchor rod in the drilled surrounding rock preset hole, and a pushing device corresponding to the station switching device;

[0006] The pushing device at least includes a first mounting plate slidingly connected with the pushing beam, a first driving mechanism for driving the first mounting plate to slide along the extension direction of the pushing beam, and a locking mechanism;

[0007] The work station switching device comprises a second mounting plate and a third mounting plate arranged in parallel above the first mounting plate and along a direction perpendicular to the extension direction of the advancing beam, and a second driving mechanism, the rock drill is fixedly connected with the second mounting plate, the power head is fixedly connected with the third mounting plate, and the work station switching device has:

[0008] The second mounting plate is aligned with the first mounting plate, and the third mounting plate is misaligned with the first mounting plate in the drilling state;

[0009] The second mounting plate is misaligned with the first mounting plate, and the third mounting plate is aligned with the first mounting plate in the anchor rod mounting state;

[0010] The second driving mechanism is used to drive the second mounting plate and the third mounting plate to move relative to the first mounting plate, so that the work station switching device is switched between the drilling state and the anchor rod mounting state;

[0011] The locking mechanism is used for locking the first mounting plate and the second mounting plate when the work station switching device is in the drilling state, and locking the third mounting plate and the first mounting plate when the work station switching device is in the anchor rod mounting state.

[0012] In a preferred embodiment, the locking mechanism comprises a third driving element mounted below the first mounting plate, and a locking block fixedly connected with the output end of the third driving element;

[0013] The first mounting plate is provided with a first positioning hole matched with the locking block, the second mounting plate is provided with a second positioning hole matched with the first positioning hole, and the third mounting plate is provided with a third positioning hole matched with the first positioning hole;

[0014] When the work station switching device is in the drilling state, the third driving element is used to drive the locking block to extend from the first positioning hole into the second positioning hole, so that the second mounting plate is locked with the first mounting plate;

[0015] When the work station switching device is in the anchor rod mounting state, the third driving element is used to drive the locking block to extend from the first positioning hole into the third positioning hole, so that the third mounting plate is locked with the first mounting plate.

[0016] In a preferred embodiment, the second positioning hole and / or the third positioning hole comprises a positioning portion matched with the outer peripheral surface of the locking block, and a guide portion arranged outwardly along an axis and gradually widened near one end of the first positioning hole.

[0017] In a preferred embodiment, the work position switching device is coaxial with the rotation center axis of the output end of the power head in the anchor rod installation state.

[0018] In a preferred embodiment, the work position switching device further comprises a fourth mounting plate and a fifth mounting plate located on both sides of the first mounting plate, and a clearance slot adapted to the first mounting plate is formed between the fourth mounting plate and the fifth mounting plate.

[0019] The first mounting plate, the fourth mounting plate and the fifth mounting plate are provided with a first sliding groove along a direction perpendicular to the extension direction of the advancing beam, and the second mounting plate and the third mounting plate are provided with sliding portions adapted to the first sliding groove.

[0020] In a preferred embodiment, the first mounting plate, the second mounting plate and the third mounting plate have the same size along a direction perpendicular to the extension direction of the advancing beam.

[0021] In the anchor rod installation state, the second mounting plate is aligned with the fifth mounting plate, and the third mounting plate is aligned with the first mounting plate.

[0022] In the anchor rod installation state, the second mounting plate is aligned with the fifth mounting plate, and the third mounting plate is aligned with the first mounting plate.

[0023] In a preferred embodiment, the second driving mechanism comprises a second sliding groove fixedly connected with the advancing beam, a sliding plate slidingly connected with the second sliding groove along a direction perpendicular to the extension direction of the advancing beam, and a second driving element located in the second sliding groove and having an output end connected with the sliding plate.

[0024] In a preferred embodiment, the sliding plate is provided with a first guide column and a second guide column arranged in parallel with the extension direction of the advancing beam, the second mounting plate is provided with a first guide sleeve adapted to the first guide column, and the third mounting plate is provided with a second guide sleeve adapted to the second guide column.

[0025] In a preferred embodiment, the first guide column and / or the second guide column are each provided with a guide surface tapered along an axial direction.

[0026] In a preferred embodiment, the work position switching device further comprises a feeding mechanism for feeding an anchor rod to the power head.

[0027] Compared with the prior art, the drill-anchor device has the following beneficial effects:

[0028] (1) The drill anchor device of the utility model, at least includes the propulsion beam, the station switching device installed in one end of the propulsion beam, the rock drill for drilling the preset hole of the surrounding rock, the power head for installing the anchor rod in the preset hole of the surrounding rock drilled, and the propulsion device corresponding to the station switching device. The rock drill and the power head are integrated on the same propulsion beam through the station switching device, the second and third mounting plates are driven to move transversely relative to the first mounting plate by the second driving mechanism, the rapid switching of the drilling and anchor rod installation station is realized, compared with the traditional split equipment operation mode, adopting such structure design, on the one hand, only one hole alignment is needed for the preset hole of the surrounding rock, the cooperative work of the drilling and anchor rod installation process is realized in turn, the process interruption caused by the equipment alternating into the field can be eliminated, the process connection time is shortened, and the construction efficiency is significantly improved; on the other hand, the integrated propulsion beam structure and the staggered station switching design make the overall size of the drill anchor device smaller than that of the traditional split equipment, and the device is especially suitable for supporting operation in limited spaces such as tunnel face and underground chamber, and has strong space adaptability. Especially important is that such structure design is adopted, the drilling and anchor rod installation are completed through single positioning, the repeated mechanical disturbance to the surrounding rock is reduced, the surrounding rock loosening circle range can be reduced, the self-bearing capacity of the surrounding rock can be effectively maintained, and the collapse risk is reduced.

[0029] (2) The drill anchor device of the utility model, the locking mechanism is used for locking the first mounting plate and the second mounting plate when the station switching device is in the drilling state, and locking the third mounting plate and the first mounting plate when the station switching device is in the anchor rod installation state. On the one hand, the first driving mechanism of the propulsion device drives the first mounting plate to move linearly along the propulsion beam, and cooperates with the locking mechanism to lock the second / third mounting plate and the first mounting plate in the drilling state and the anchor rod installation state respectively, so as to ensure the stability of the rotation center shaft of the rock drill drill rod and the rotation center shaft of the power head output end in the operation process, and always keep on the same straight line. This mechanical hard connection mode can ensure the hole alignment accuracy and completely solve the secondary hole alignment deviation problem in the traditional process; on the other hand, the locking mechanism rigidly locks the first mounting plate after the station switching, and in combination with the guiding constraint action of the propulsion beam, a multi-dimensional mechanical support system is formed, which effectively resists the equipment vibration caused by the stress release of the surrounding rock, and avoids the angle deviation of the rock drill drill rod and the angle deviation of the power head anchor rod.

[0030] (3) The drilling and anchoring device, the locking mechanism comprises a third driving element installed below the first mounting plate, and a locking block fixedly connected with the output end of the third driving element; the first mounting plate is provided with a first positioning hole matched with the locking block, the second mounting plate is provided with a second positioning hole matched with the first positioning hole, and the third mounting plate is provided with a third positioning hole matched with the first positioning hole. The second positioning hole and / or the third positioning hole comprise a positioning portion matched with the outer peripheral surface of the locking block, and a guide portion gradually widened outward along the axis near one end of the first positioning hole. The guide portion is gradually widened outward along the axis to form a physical guide channel, and the third driving element drives the locking block to extend into the second positioning hole from the first positioning hole and drives the locking block to insert into the third positioning hole from the first positioning hole. On the one hand, the position of the station switching device is corrected when switching the stations of the second mounting plate and the third mounting plate, the position is automatically corrected, the accuracy of the pre-set hole drilling and anchor rod installation operation of the surrounding rock is ensured after one-time hole drilling; on the other hand, when the locking block is completely embedded in the positioning portion, the first mounting plate and the second / third mounting plate form three-point surface contact, the structural rigidity is high, and the ability to resist equipment vibration during construction is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is an overall structure schematic view of an embodiment of the drilling and anchoring device of the utility model;

[0032] Figure 2 It is another angle schematic view of the overall structure of an embodiment of the drilling and anchoring device of the utility model;

[0033] Figure 3 It is an installation schematic view of the first mounting plate, the second mounting plate, the third mounting plate, the fourth mounting plate and the fifth mounting plate of an embodiment of the drilling and anchoring device of the utility model;

[0034] Figure 4 It is a locking mechanism installation schematic view of an embodiment of the drilling and anchoring device of the utility model;

[0035] Figure 5 It is Figure 4 A-A direction sectional view.

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 1 - advance beam; 11 - guide rail - slider structure;

[0038] 2 - work station switching device; 21 - second mounting plate; 211 - second positioning hole; 2111 - positioning part; 2112 - guiding part; 212 - sliding part; 213 - first guiding sleeve; 22 - third mounting plate; 221 - third positioning hole; 222 - second guiding sleeve; 23 - second driving mechanism; 231 - second sliding slot; 232 - sliding plate; 2321 - first guiding column; 23211 - guiding surface; 2322 - second guiding column; 233 - second driving element; 24 - fourth mounting plate; 25 - fifth mounting plate; 26 - accommodating slot;

[0039] 3 - rock drill;

[0040] 4 - power head;

[0041] 5 - advancing device; 51 - first mounting plate; 511 - first positioning hole; 512 - first sliding slot; 52 - first driving mechanism; 53 - locking mechanism; 531 - third driving element; 532 - locking block. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0043] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0044] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, integrally connected, or detachably connected; it can be the communication inside two elements; it can be directly connected, or indirectly connected through an intermediate medium; for those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0045] The drilling and anchoring device of the embodiment comprises at least a propulsion beam 1, a work station switching device 2 mounted at one end of the propulsion beam, a rock drill 3 for drilling a pre-set hole in the surrounding rock, a power head 4 for installing an anchor rod in the pre-set hole drilled in the surrounding rock, and an advancing device 5 corresponding to the work station switching device. Figure 1 As described above, the drilling and anchoring device comprises at least a propulsion beam 1, a work station switching device 2 mounted at one end of the propulsion beam, a rock drill 3 for drilling a pre-set hole in the surrounding rock, a power head 4 for installing an anchor rod in the pre-set hole drilled in the surrounding rock, and an advancing device 5 corresponding to the work station switching device.

[0046] As Figure 1 , Figure 3 and Figure 5 shown, the propulsion device 5 at least includes a first mounting plate 51 slidingly connected with the propulsion beam, a first driving mechanism 52 for driving the first mounting plate to slide along the extension direction of the propulsion beam 1, and a locking mechanism 53. In the embodiment, a guide rail-sliding block structure 11 is arranged between the first mounting plate 51 and the propulsion beam 1, and the first mounting plate 51 is slidingly connected with the propulsion beam through the guide rail-sliding block structure.

[0047] The station switching device 2 at least includes a second mounting plate 21 and a third mounting plate 22 arranged in parallel above the first mounting plate 51 and along a direction perpendicular to the extension direction of the propulsion beam 1, and a second driving mechanism 23, the rock drill 3 is fixedly connected with the second mounting plate, and the power head 4 is fixedly connected with the third mounting plate, and the station switching device has:

[0048] a drilling state in which the second mounting plate is aligned with the first mounting plate and the third mounting plate is misaligned with the first mounting plate;

[0049] an anchor rod installation state in which the second mounting plate is misaligned with the first mounting plate and the third mounting plate is aligned with the first mounting plate;

[0050] The second driving mechanism is used to drive the second mounting plate 21 and the third mounting plate 22 to move relative to the first mounting plate, so as to switch the station switching device between the drilling state and the anchor rod installation state. By integrating the rock drill and the power head on the same propulsion beam through the station switching device, and driving the second mounting plate and the third mounting plate to move transversely relative to the first mounting plate through the second driving mechanism, the drilling and anchor rod installation stations are quickly switched. Compared with the traditional split equipment operation mode, by using such a structural design, on the one hand, only one hole alignment is needed for the surrounding rock, and the drilling and anchor rod installation processes are sequentially implemented to cooperate, which can eliminate the process interruption caused by the alternating entry of the equipment, shorten the process connection time, and significantly improve the construction efficiency; on the other hand, the integrated propulsion beam structure and the misaligned station switching design make the overall size of the drilling and anchoring device smaller than that of the traditional split equipment, which is especially suitable for supporting operations in limited spaces such as tunnel working faces and underground chambers, and has strong space adaptability. Especially importantly, the drilling and anchor rod installation are completed through single positioning, which reduces the repeated mechanical disturbance to the surrounding rock, reduces the range of the surrounding rock loosening circle, effectively maintains the self-bearing capacity of the surrounding rock, and reduces the risk of collapse.

[0051] The locking mechanism 53 is used for locking the first mounting plate and the second mounting plate when the work station switching device is in the drilling state, and locking the first mounting plate and the third mounting plate when the work station switching device is in the anchor rod installation state. On the one hand, the first driving mechanism of the advancing device drives the first mounting plate to move linearly along the advancing beam, and the locking mechanism is locked with the second / third mounting plate and the first mounting plate in the drilling state and the anchor rod installation state respectively, so as to ensure that the rotation center axis of the rock drill rod and the rotation center axis of the power head output end are stable during the operation process and always remain in the same straight line. This mechanical hard connection mode can ensure the hole alignment accuracy and completely solve the problem of secondary hole deviation in the traditional process. On the other hand, the locking mechanism rigidly locks the first mounting plate after the work station switching, and in combination with the guiding and restraining effect of the advancing beam, a multi-dimensional mechanical support system is formed to effectively resist the equipment vibration caused by the stress release of the surrounding rock and avoid the angle deviation of the rock drill rod and the angle deviation of the anchor rod of the power head.

[0052] As shown in Figure 4 and Figure 5 The locking mechanism 53 includes a third driving element 531 installed below the first mounting plate 51, and a locking block 532 fixedly connected with the output end of the third driving element;

[0053] The first mounting plate 51 is provided with a first positioning hole 511 matched with the locking block, the second mounting plate 21 is provided with a second positioning hole 211 matched with the first positioning hole 511, and the third mounting plate 22 is provided with a third positioning hole 221 matched with the first positioning hole 511;

[0054] When the work station switching device 2 is in the drilling state, the third driving element 531 is used to drive the locking block 532 to extend from the first positioning hole into the second positioning hole, so as to lock the second mounting plate and the first mounting plate. When the work station switching device 2 is switched from the drilling state to the anchor rod installation state, the third driving element 531 is used to drive the locking block 532 to retract from the second positioning hole to the first positioning hole, so as to unlock the second mounting plate and the first mounting plate;

[0055] When the work station switching device 2 is in the anchor rod installation state, the third driving element 531 is used to drive the locking block 532 to extend from the first positioning hole into the third positioning hole, so as to lock the third mounting plate and the first mounting plate. When the work station switching device 2 is switched from the anchor rod installation state to the drilling state, the third driving element 531 is used to drive the locking block 532 to retract from the third positioning hole to the first positioning hole, so as to unlock the third mounting plate and the first mounting plate.

[0056] The second positioning hole 211 and / or the third positioning hole 221 comprises a positioning part 2111 matched with the outer circumferential surface of the locking block 532, and a guide part 2112 arranged outwardly along the axis near one end of the first positioning hole 511. The guide part arranged outwardly along the axis forms a physical guide channel, and the third driving element drives the locking block to be inserted into the second positioning hole from the first positioning hole and the locking block to be inserted into the third positioning hole from the first positioning hole. On the one hand, the position of the work station after the work station switching device switches the positions of the second mounting plate and the third mounting plate is corrected, the position is automatically corrected, the accuracy of the drilling of the preset hole of the surrounding rock and the installation of the anchor rod is ensured after one-time hole alignment; on the other hand, when the locking block is completely embedded in the positioning part, the first mounting plate and the second / third mounting plate form a three-point surface contact, the structural rigidity is high, and the ability to resist equipment vibration during construction is improved.

[0057] In the embodiment, the work station switching device is located at the rotation center axis of the drill rod of the rock drill in the drilling state, and is coaxial with the rotation center axis of the output end of the power head in the anchor rod installation state, so that after the work station switching device switches the working positions of the rock drill and the power head, the drilling of the preset hole of the surrounding rock and the installation of the anchor rod can be sequentially performed without additional hole alignment process and position adjustment.

[0058] As shown in Figure 2 and Figure 3 The work station switching device 2 further comprises a fourth mounting plate 24 and a fifth mounting plate 25 located on both sides of the first mounting plate 51, and a gap 26 matched with the first mounting plate is formed between the fourth mounting plate and the fifth mounting plate.

[0059] The first mounting plate, the fourth mounting plate and the fifth mounting plate are provided with a first sliding groove 512 along the direction perpendicular to the extension direction of the advancing beam, and the second mounting plate 21 and the third mounting plate 22 are provided with a sliding part 212 matched with the first sliding groove.

[0060] In the embodiment, the first mounting plate 51, the second mounting plate 21 and the third mounting plate 22 have the same size along the direction perpendicular to the extension direction of the advancing beam 1.

[0061] In the drilling state of the work station switching device 2, the second mounting plate 21 is aligned with the first mounting plate 51, and the third mounting plate 22 is aligned with the fourth mounting plate 24.

[0062] In the anchor rod installation state of the work station switching device 2, the second mounting plate 21 is aligned with the fifth mounting plate 25, and the third mounting plate 22 is aligned with the first mounting plate 51. On the one hand, the two work stations (the drilling state and the anchor rod installation state) are quickly switched; on the other hand, the lateral dimensions are kept consistent, the alignment accuracy is ensured, and the stability of the equipment operation is improved.

[0063] As shown in Figure 1 and2 As shown, the second driving mechanism 23 comprises a second sliding groove 231 fixedly connected with the advancing beam 1, a sliding plate 232 slidingly connected with the second sliding groove along a direction perpendicular to the extending direction of the advancing beam, and a second driving element 233 located in the second sliding groove and having an output end connected with the sliding plate.

[0064] The sliding plate 232 is provided with a first guide column 2321 and a second guide column 2322 arranged in parallel with the extending direction of the advancing beam 1, the second mounting plate 21 is provided with a first guide sleeve 213 matched with the first guide column, and the third mounting plate 22 is provided with a second guide sleeve 222 matched with the second guide column.

[0065] Preferably, the first guide column 2321 and / or the second guide column 2322 is provided with a guide surface 23211 arranged in tapering along the axial direction.

[0066] In summary, the above description is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A drill anchor apparatus, characterized by: At least comprising a propulsion beam (1), a work station switching device (2) mounted on one end of the propulsion beam, a rock drill (3) for drilling a pre-set hole in surrounding rock, a power head (4) for installing an anchor rod in the pre-set hole drilled in the surrounding rock, and a propulsion device (5) arranged corresponding to the work station switching device; The propulsion device (5) at least comprises a first mounting plate (51) slidingly connected with the propulsion beam, a first driving mechanism (52) for driving the first mounting plate to slide along the extension direction of the propulsion beam, and a locking mechanism (53); The work station switching device (2) at least comprises a second mounting plate (21) and a third mounting plate (22) arranged in parallel above the first mounting plate and along a direction perpendicular to the extension direction of the propulsion beam (1), and a second driving mechanism (23), the rock drill (3) is fixedly connected with the second mounting plate, the power head (4) is fixedly connected with the third mounting plate, and the work station switching device has: A drilling state in which the second mounting plate is aligned with the first mounting plate and the third mounting plate is misaligned with the first mounting plate; An anchor rod installation state in which the second mounting plate is misaligned with the first mounting plate and the third mounting plate is aligned with the first mounting plate; The second driving mechanism is used for driving the second mounting plate (21) and the third mounting plate (22) to move relative to the first mounting plate, so that the work station switching device is switched between the drilling state and the anchor rod installation state; The locking mechanism (53) is used for locking the first mounting plate with the second mounting plate when the work station switching device is in the drilling state, and locking the third mounting plate with the first mounting plate when the work station switching device is in the anchor rod installation state.

2. A drill anchor as defined in claim 1, wherein: The locking mechanism (53) comprises a third driving element (531) mounted below the first mounting plate (51), and a locking block (532) fixedly connected with the output end of the third driving element; The first mounting plate (51) is provided with a first positioning hole (511) matched with the locking block, the second mounting plate (21) is provided with a second positioning hole (211) matched with the first positioning hole (511), and the third mounting plate (22) is provided with a third positioning hole (221) matched with the first positioning hole (511); When the work station switching device (2) is in the drilling state, the third driving element (531) is used for driving the locking block (532) to extend from the first positioning hole into the second positioning hole, so that the second mounting plate is locked with the first mounting plate; When the work station switching device (2) is in the anchor rod installation state, the third driving element (531) is used for driving the locking block (532) to extend from the first positioning hole into the third positioning hole, so that the third mounting plate is locked with the first mounting plate.

3. A drill anchor assembly according to claim 2, wherein: The second positioning hole (211) and / or the third positioning hole (221) comprises a positioning part (2111) matched with the outer peripheral surface of the locking block (532), and a guide part (2112) arranged outwardly and gradually widened along the axis near one end of the first positioning hole (511).

4. A drill anchor assembly according to any one of claims 1 to 3 wherein: The work position switching device (2) is coaxial with the rotation center axis of the drill rod of the rock drill (3) in the drilling state, and coaxial with the rotation center axis of the output end of the power head (4) in the anchor rod installation state.

5. A drill anchor assembly according to claim 4 wherein: The work position switching device (2) further comprises a fourth mounting plate (24) and a fifth mounting plate (25) located on both sides of the first mounting plate (51), and a gap (26) matched with the first mounting plate is formed between the fourth mounting plate and the fifth mounting plate. The first mounting plate, the fourth mounting plate and the fifth mounting plate are provided with a first sliding groove (512) along the direction perpendicular to the extension direction of the advancing beam, and the second mounting plate (21) and the third mounting plate (22) are provided with sliding parts (212) matched with the first sliding groove at both ends.

6. A drill anchor assembly according to claim 5, wherein: The first mounting plate (51), the second mounting plate (21) and the third mounting plate (22) have the same size along the direction perpendicular to the extension direction of the advancing beam (1). In the drilling state, the second mounting plate is aligned with the first mounting plate, and the third mounting plate is aligned with the fourth mounting plate. In the anchor rod installation state, the second mounting plate is aligned with the fifth mounting plate, and the third mounting plate is aligned with the first mounting plate.

7. A drill anchor assembly according to any one of claims 5-6, wherein: The second driving mechanism (23) comprises a second sliding groove (231) fixedly connected with the advancing beam (1), a sliding plate (232) slidingly connected with the second sliding groove along the direction perpendicular to the extension direction of the advancing beam, and a second driving element (233) located in the second sliding groove and having an output end connected with the sliding plate.

8. A drill anchor assembly according to claim 7, wherein: The sliding plate (232) is provided with a first guide column (2321) and a second guide column (2322) arranged in parallel with the extension direction of the advancing beam (1), the second mounting plate (21) is provided with a first guide sleeve (213) matched with the first guide column, and the third mounting plate (22) is provided with a second guide sleeve (222) matched with the second guide column.

9. A drill anchor assembly according to claim 8, wherein: The first guide column (2321) and / or the second guide column (2322) are provided with a guide surface (23211) arranged gradually tapered along the axis direction.

10. A drill anchor assembly according to any one of claims 1-3, 5-6 or 8-9, wherein: A guide rail-sliding block structure (11) is arranged between the first mounting plate (51) and the advancing beam (1), and the first mounting plate is slidingly connected with the advancing beam through the guide rail-sliding block structure.

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