Open blast hole protecting device

Abstract

The invention discloses a hole protecting device for an open blast hole. The hole protecting device comprises a cover part, a storage part and a feeding assembly. Wherein the cover piece is used for being matched with an orifice of a blast hole to cover the blast hole; a plurality of cover pieces are contained in the containing piece, and a discharging opening is formed in the bottom of the containing piece and corresponds to one cover piece; the feeding assembly is used for moving the cover piece from the storage piece to the position of the blasting hole through the discharging opening. According to the open blast hole protecting device, the multiple cover pieces are contained through the containing piece, the discharging opening is formed in the bottom of the containing piece so that the cover pieces can move to the discharging opening under the action of gravity, the opening size of the discharging opening corresponds to that of one cover piece, and the feeding piece is movably arranged at the discharging opening in the horizontal direction; and the feeding piece sequentially moves the plurality of cover pieces to the positions corresponding to the blast holes from the storage piece, so that the plurality of blast holes are covered by the cover pieces, and the effect of reducing blockage of the blast holes is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering blasting and relates to an open-air blasting hole protecting device. Background Art

[0002] Blasting engineering refers to the use of the energy generated by explosives to do work on the soil, stone, foundation, building, and structure that need to be excavated or demolished to achieve the predetermined purpose of the project. Blasting engineering generally requires drilling holes on the surface of the object to be blasted, and then filling the blasting holes with explosives.

[0003] In the prior art, open-pit rotary drills are usually used to drill blasting holes. Hundreds of blasting holes are set at a time, and the blasting holes need to be drilled in sequence before the blasting operation. In places such as outdoors, especially in places with strong winds and dust, sand or soil can easily enter the blasting holes. When drilling other blasting holes next to the drilled blasting holes, the ground will vibrate due to the drilling action, and the sand and soil around the drilled blasting holes will enter the blasting holes, causing the blasting holes to be blocked. At this time, the operators need to clean the blasting holes before placing explosives, which not only reduces the efficiency of charging, but also has a certain impact on the completeness of subsequent charging operations. Summary of the invention

[0004] In view of the deficiencies existing in the prior art, the purpose of the present invention is to provide an open-air blasting hole protection device, which moves multiple cover members from a storage member to the positions of corresponding blasting holes in sequence through a feeding assembly, so that the blasting holes can be covered by the cover members, thereby reducing the possibility of blasting holes being blocked and solving the problem of blasting hole blockage in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0006] A device for protecting an open-air blasting hole comprises a cover, a storage part and a feeding assembly; the cover is used to cooperate with the hole of the blasting hole to cover the blasting hole; the storage part can accommodate a plurality of the cover parts, a discharge port is provided at the bottom of the storage part and corresponds to one of the cover parts; the feeding assembly is used to transport the cover part from the discharge port to the blasting hole.

[0007] The present invention also includes the following technical features:

[0008] Specifically, the cover member includes a cover plate and a protrusion at the lower end thereof; the cover plate corresponds to the discharge port in the horizontal direction, and the protrusion protrudes downward from the middle of the cover plate to the discharge port in the vertical direction.

[0009] Specifically, the protrusion includes a shaft portion and a supporting portion; the shaft portion is arranged between the cover plate and the supporting portion, one end of the shaft portion is connected to the cover plate, and the other end is connected to the supporting portion; the shaft portion is cylindrical, the supporting portion is disc-shaped, and the diameter of the supporting portion is smaller than the diameter of the cover plate.

[0010] Specifically, the storage member includes a barrel body and a barrel bottom plate; a plurality of cover members are stacked in the barrel body along the thickness direction, a first opening is provided on the bottom circumference of the barrel body, the first opening is used to horizontally move out the cover plate, the barrel bottom plate is connected to the bottom of the barrel body, and the barrel bottom plate corresponds to the cover plate in the vertical direction;

[0011] The cylinder bottom plate is provided with a second opening in the vertical direction, and the diameter of the second opening is between larger than the diameter of the supporting portion of the protrusion and smaller than the diameter of the cover plate; the protrusion protrudes from the cylinder bottom plate from the second opening, and the second opening is connected with the first opening to form the discharge port.

[0012] Specifically, the opening size of the first opening along the vertical direction ranges from greater than the thickness of one cover plate to less than the thickness of two cover plates.

[0013] Specifically, the bottom plate of the cylinder is in a semicircular ring shape.

[0014] Specifically, the feeding assembly includes a feeding member, a horizontal moving member and a vertical moving member; the feeding member includes a fork claw, which can correspond to the forked protrusion and drive the cover member to move; the horizontal moving member is connected to the feeding member and is used to move the feeding member in the horizontal direction; the vertical moving member is connected to the horizontal moving member and is used to move the horizontal moving member in the vertical direction.

[0015] Specifically, the horizontal moving member includes a horizontal moving rod, a horizontal sleeve and a horizontal hydraulic cylinder; the horizontal sleeve extends in the horizontal direction, the horizontal moving rod is movably arranged on the horizontal sleeve, and the horizontal moving rod is connected to the feeding member; the cylinder barrel of the horizontal hydraulic cylinder is connected to the horizontal sleeve, and the piston rod of the horizontal hydraulic cylinder is connected to the horizontal moving rod;

[0016] The vertical moving member includes a vertical moving rod, a vertical sleeve and a vertical hydraulic cylinder; the vertical sleeve extends in the vertical direction, the vertical moving rod is movably arranged on the vertical sleeve, the vertical moving rod is connected to the horizontal moving member, the cylinder barrel of the vertical hydraulic cylinder is connected to the vertical sleeve, and the piston rod of the vertical hydraulic cylinder is connected to the horizontal moving member.

[0017] Specifically, it also includes a magnetic suction device, which is arranged at the lower end of the open-pit mine rotary drill and corresponds to the blasting hole below; the magnetic suction device is spaced apart from the feeding assembly, and the feeding assembly transports the cover from the storage member to the magnetic suction device. The magnetic suction device can attract the cover and make the cover fit into the card slot at the bottom of the magnetic suction device.

[0018] A method for protecting an open-pit blasting hole is implemented by using the open-pit blasting hole protecting device, comprising: a plurality of cover members are stacked in a storage member along the thickness direction, an open-pit rotary drill drills a blasting hole, and then a feeding assembly moves the plurality of cover members from the storage member to positions corresponding to the blasting holes in sequence, and the cover members cover the blasting holes, so that the open-pit rotary drill drill automatically protects the hole during drilling construction, thereby reducing the blockage of the blasting hole.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] The open-air blasting hole protection device of the present invention accommodates multiple cover members through a storage member, and a discharge port is opened at the bottom of the storage member so that the cover members move to the discharge port under gravity, and the opening size of the discharge port corresponds to one cover member. A feeding member is arranged at the discharge port, and the feeding member moves the multiple cover members from the storage member to the positions of the corresponding blasting holes in sequence, so that the multiple blasting holes are covered by the cover members, thereby achieving the effect of reducing the blockage of the blasting holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of an open-air blasting hole protection device and a blasting hole of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the open-pit blasting hole protection device.

[0023] Figure 3 This is a three-dimensional diagram of the open-pit blasting hole protection device.

[0024] Figure 4 This is an exploded view of some parts of the open-pit blasting hole protection device.

[0025] The meaning of each number in the figure is:

[0026] 1. Open-air blasting hole protection device; 11. Cover; 111. Cover plate; 112. Bump; 113. Shaft; 114. Abutment; 12. Storage; 121. Discharge port; 122. Cylinder body; 123. First opening; 124. Cylinder bottom plate; 125. Second opening; 13. Feeding assembly; 131. Feeding member; 1311. Fork claw; 132. Horizontal moving member; 133. Horizontal moving rod; 134. Horizontal sleeve; 135. Horizontal hydraulic cylinder; 136. Vertical moving member; 137. Vertical moving rod; 138. Vertical sleeve; 139. Vertical hydraulic cylinder; 14. Horizontal direction; 15. Vertical direction; 2. Blasting hole; 3. Magnetic device; 31. Slot. DETAILED DESCRIPTION

[0027] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0028] Embodiment 1:

[0029] like Figures 1 to 4 As shown, this embodiment provides an open-air blasting hole protection device, including a cover 11, a storage piece 12 and a feeding assembly 13; the cover 11 is used to cooperate with the hole opening of the blasting hole 2 to cover the blasting hole 2; the storage piece 12 can accommodate multiple cover pieces 11, and a discharge port 121 is provided at the bottom of the storage piece 12 and corresponds to one cover piece 11; the feeding assembly 13 is used to transport the cover 11 from the storage piece 12 to the blasting hole 2 through the discharge port 121.

[0030] The open-pit blasting hole protection device 1 of the present invention accommodates multiple cover members 11 through a storage member 12, and a discharge port 121 is opened at the bottom of the storage member 12, so that the cover member 11 moves to the discharge port 121 under gravity, and the opening size of the discharge port 121 corresponds to one cover member 11, and a feeding member 131 is arranged at the discharge port 121, and the feeding member 131 moves multiple cover members 11 from the storage member 12 to the position of the corresponding blasting hole 2 in sequence, so that multiple blasting holes 2 are covered by the cover members 11 to reduce the blockage of the blasting holes 2. Specifically, the open-pit blasting hole protection device 1 is arranged on an open-pit mine rotary drill, and the open-pit mine rotary drill drills the blasting hole 2, and then the open-pit blasting hole protection device 1 covers the cover member 11 on the blasting hole 2, so that the open-pit mine rotary drill automatically protects the hole during drilling construction. When multiple blasting holes 2 need to be constructed, the open-air blasting hole protection device 1 covers the cover 11 on the corresponding blasting holes 2, thereby reducing the labor intensity of workers, improving operation safety, and reducing the blockage of the blasting holes 2.

[0031] The cover member 11 includes a cover plate 111 and a protrusion 112 at the lower end thereof; the cover plate 111 corresponds to the discharge port 121 along the horizontal direction 14 , and the protrusion 112 protrudes downward from the middle of the cover plate 111 to the discharge port 121 along the vertical direction 15 .

[0032] The protrusion 112 includes a shaft portion 113 and a supporting portion 114; the shaft portion 113 is arranged between the cover plate 111 and the supporting portion 114, one end of the shaft portion 113 is connected to the cover plate 111, and the other end is connected to the supporting portion 114; the shaft portion 113 is cylindrical, the supporting portion 114 is disc-shaped, and the diameter of the supporting portion 114 is smaller than the diameter of the cover plate 111.

[0033] The storage member 12 includes a cylinder body 122 and a cylinder bottom plate 124; multiple cover members 11 are stacked in the cylinder body 122 along the thickness direction so that the multiple cover members 11 are moved out of the storage member 12 from the discharge port 121 in turn, and a first opening 123 is provided on the bottom circumferential surface of the cylinder body 122, and the first opening 123 is used to horizontally move out the cover plate 111, and the cylinder bottom plate 124 is connected to the bottom of the cylinder body 122. In this embodiment, the cylinder bottom plate 124 is semicircular, and the cylinder bottom plate 124 corresponds to the cover plate 111 along the vertical direction 15.

[0034] The cylinder bottom plate 124 is provided with a second opening 125 along the vertical direction 15, and the diameter of the second opening 125 is greater than the diameter of the abutting portion 114 of the protrusion 112 and smaller than the diameter of the cover plate 111; the protrusion 112 protrudes from the cylinder bottom plate 124 from the second opening 125, and the second opening 125 is connected with the first opening 123 to form the discharge port 121. Thus, the bottom of the cover plate 111 contacts the cylinder bottom plate 124 to keep the cover 11 in the receiving part 12, and the protrusion 112 is exposed from the receiving part 12 from the second opening 125, which is conducive to the fork claw 1311 aligning with the shaft 113 of the protrusion 112 to drive the cover 11 to move.

[0035] The opening size of the first opening 123 along the vertical direction 15 is in a range between greater than the thickness of one cover plate 111 and less than the thickness of two cover plates 111. Thus, the fork claw 1311 moves one cover plate 111 out of the barrel 122 through the first opening 123 at a time, which is conducive to the fork claw 1311 sequentially moving multiple cover members 11 to the corresponding blasting holes 2 to reduce the blockage of multiple blasting holes 2.

[0036] The feeding assembly 13 includes a feeding piece 131, a horizontal moving piece 132 and a vertical moving piece 136; the feeding piece 131 includes a fork claw 1311, which can be forced to move to a circumferential position corresponding to the forking protrusion 112 and drive the cover 11 to move; the horizontal moving piece 132 is connected to the feeding piece 131 and is used to move the feeding piece 131 along the horizontal direction 14; the vertical moving piece 136 is connected to the horizontal moving piece 132 and is used to move the horizontal moving piece 132 along the vertical direction 15.

[0037] The fork claw 1311 moves toward the shaft portion 113, and the fork claw 1311 contacts the circumference of the shaft portion 113, so that the fork claw 1311 abuts against the shaft portion 113 to drive the cover 11 to move. The bottom of the fork claw 1311 corresponds to the abutting portion 114. During the movement of the cover 11, the abutting portion 114 contacts the bottom of the fork claw 1311 to maintain the balance of the cover 11 and reduce the tilt of the cover 11. This is conducive to the fork claw 1311 driving the cover 11 to move to the blasting hole 2 to reduce the blasting hole 2 from being blocked.

[0038] The horizontal moving member 132 includes a horizontal moving rod 133, a horizontal sleeve 134 and a horizontal hydraulic cylinder 135; the horizontal sleeve 134 extends in the horizontal direction 14, the horizontal moving rod 133 is movably arranged in the horizontal sleeve 134, and the horizontal moving rod 133 is connected to the feeding member 131; the cylinder of the horizontal hydraulic cylinder 135 is connected to the horizontal sleeve 134, and the piston rod of the horizontal hydraulic cylinder 135 is connected to the horizontal moving rod 133; the horizontal hydraulic cylinder 135 is used to drive the horizontal moving rod 133 to telescopically move in the horizontal sleeve 134, so that the horizontal moving rod 133 drives the feeding member 131 to move. It can be understood that the horizontal sleeve 134 is hollow and extends in the horizontal direction 14, and the circumference of the horizontal moving rod 133 cooperates with the horizontal sleeve 134, so that the horizontal moving rod 133 telescopically moves in the horizontal sleeve 134 along the horizontal direction 14. It should be noted that the horizontal moving member 132 can also use a manipulator to move the feeding member 131 along the horizontal direction 14, and this embodiment is not limited to this. In other embodiments, the horizontal moving member 132 can also use a cylinder or a motor to drive the piston rod to move, and this embodiment is not limited to this.

[0039] The vertical moving member 136 includes a vertical moving rod 137, a vertical sleeve 138 and a vertical hydraulic cylinder 139; the vertical sleeve 138 extends in the vertical direction 15, the vertical moving rod 137 is movably arranged in the vertical sleeve 138, the vertical moving rod 137 is connected to the horizontal moving member 132, the cylinder barrel of the vertical hydraulic cylinder 139 is connected to the vertical sleeve 138, and the piston rod of the vertical hydraulic cylinder 139 is connected to the horizontal moving member 132. The vertical sleeve 138 is hollow and extends in the vertical direction 15, and the circumferential surface of the vertical moving rod 137 cooperates with the vertical sleeve 138, so that the vertical moving rod 137 telescopically moves in the vertical sleeve 138 along the vertical direction 15. The piston rod of the vertical hydraulic cylinder 139 is connected to the vertical moving rod 137 , and the vertical hydraulic cylinder 139 is used to drive the vertical moving rod 137 to telescopically move in the vertical sleeve 138 , so that the vertical moving rod 137 drives the horizontal sleeve 134 to move along the vertical direction 15 .

[0040] The open-pit blasting hole protection device of the present invention also includes a magnetic suction device 3, which is arranged at the lower end of the open-pit mine rotary drill and corresponds to the blasting hole 2 below; the magnetic suction device 3 is spaced apart from the feeding assembly 13, and the feeding assembly 13 transports the cover 11 from the storage member 12 to the magnetic suction device 3. The magnetic suction device 3 can attract the cover 11 and make the cover 11 fit into the card slot 31 at the bottom of the magnetic suction device 3, so that the magnetic suction device 3 can stably absorb and move the cover 11. When in use, the open-pit rotary drill first moves the magnetic device 3 to the position directly above the blasting hole 2, and then the feeding piece 131 moves the cover 11 from the storage piece 12 to the position of the magnetic device 3. After the magnetic device 3 is powered on, it adsorbs the cover 11, and the cover 11 is inserted into the slot 31 of the magnetic device 3 so that the cover 11 corresponds to the blasting hole 2 along the vertical direction 15. The open-pit rotary drill moves the magnetic device 3 along the vertical direction 15 so that the cover 11 covers the blasting hole 2. Finally, the magnetic device 3 is powered off and separated from the cover 11, so that the cover 11 remains in the blasting hole 2 to reduce the blockage of the blasting hole 2.

[0041] When the present invention is used, multiple cover members 11 are stacked on the storage member 12 along the thickness direction, and the multiple cover members 11 move toward the bottom of the storage member 12 under the action of gravity. The opening size of the discharge port 121 corresponds to the thickness of one cover member 11; the open-pit mine rotary drill drills the blasting hole 2, and then the feeder 131 of the open-pit blasting hole protection device moves the multiple cover members 11 from the storage member 12 to the position corresponding to the blasting hole 2 in turn, and the cover members 11 cover the blasting hole 2, so that the open-pit mine rotary drill automatically protects the hole during drilling construction, reducing the blockage of the blasting hole 2.

[0042] Embodiment 2:

[0043] This embodiment provides an open-pit blasting hole protection method, which is implemented by the open-pit blasting hole protection device of embodiment 1, including: multiple cover members are stacked in the storage member along the thickness direction, the cover members move toward the bottom of the storage member under the action of gravity, and the opening size of the discharge port corresponds to the thickness of one cover member; the open-pit mine rotary drill drills the blasting hole, and then the feeding assembly moves the multiple cover members from the storage member to the position of the corresponding blasting hole in turn, and the cover members cover the blasting hole, so that the open-pit mine rotary drill automatically protects the hole during drilling construction to reduce the blockage of the blasting hole. Specifically including the following steps:

[0044] First, the horizontal hydraulic cylinder and the vertical hydraulic cylinder of the feeding assembly drive the horizontal moving rod and the vertical moving rod to move respectively, so that the claw reaches the horizontal height position of the protrusion of the bottom cover of the storage part;

[0045] Then, the vertical hydraulic cylinder is maintained, and the horizontal hydraulic cylinder continues to drive the horizontal moving rod to move toward the orifice position of the blasting hole, at which time the fork claw extends into the shaft of the protrusion; the horizontal hydraulic cylinder continues to drive the horizontal moving rod to move toward the orifice position of the blasting hole, and the cover can be moved out of the discharge port;

[0046] Continue to control the horizontal hydraulic cylinder and the vertical hydraulic cylinder to respectively drive the horizontal moving rod and the vertical moving rod to move, so that the fork claw drives the cover to move to the center position of the magnetic suction device;

[0047] The magnetic attraction device is energized to generate magnetic attraction force on the cover;

[0048] Subsequently, the horizontal hydraulic cylinder is controlled to drive the horizontal moving rod to move in a direction away from the hole opening of the blasting hole. At this time, due to the effect of the magnetic attraction force, the cover is clamped into the clamping groove of the magnetic attraction device, so that the cover corresponds to the blasting hole in the vertical direction;

[0049] When the open-pit rotary drill moves in the vertical direction, the magnetic suction device connected to it makes the cover cover the blasting hole;

[0050] Finally, the power of the magnetic device is cut off, and the magnetic attraction force on the cover is no longer generated. The cover is separated from the magnetic device under the action of gravity, and the cover remains on the blasting hole to cover the blasting hole.

[0051] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0053] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An open-air blast hole protection device, characterized in that: The invention comprises a cover member (11), a storage member (12) and a feeding assembly (13); the cover member (11) is used to cooperate with the opening of a blasting hole (2) to cover the blasting hole (2); the storage member (12) can accommodate a plurality of the cover members (11), a discharge port (121) is provided at the bottom of the storage member (12) and corresponds to one of the cover members (11); the feeding assembly (13) is used to transport the cover member (11) from the storage member (12) to the blasting hole (2) via the discharge port (121).

2. The open-air blast hole protection device according to claim 1, characterized in that: The cover member (11) comprises a cover plate (111) and a protrusion (112) at the lower end thereof; the cover plate (111) corresponds to the discharge port (121) along a horizontal direction (14), and the protrusion (112) protrudes downward from the middle of the cover plate (111) to the discharge port (121) along a vertical direction (15).

3. The open-air blast hole protection device according to claim 2, characterized in that: The protrusion (112) comprises a shaft portion (113) and a supporting portion (114); the shaft portion (113) is arranged between the cover plate (111) and the supporting portion (114); one end of the shaft portion (113) is connected to the cover plate (111) and the other end is connected to the supporting portion (114); the shaft portion (113) is cylindrical, the supporting portion (114) is disc-shaped, and the diameter of the supporting portion (114) is smaller than the diameter of the cover plate (111).

4. The open-air blast hole protection device according to claim 3, characterized in that: The storage member (12) comprises a barrel body (122) and a barrel bottom plate (124); a plurality of cover members (11) are stacked in the barrel body (122) along the thickness direction; a first opening (123) is provided on the bottom circumference of the barrel body (122); the first opening (123) is used to horizontally move out the cover plate (111); the barrel bottom plate (124) is connected to the bottom of the barrel body (122); the barrel bottom plate (124) corresponds to the cover plate (111) along the vertical direction (15); The cylinder bottom plate (124) is provided with a second opening (125) along the vertical direction (15), and the diameter of the second opening (125) is within a range between being larger than the diameter of the abutting portion (114) of the protrusion (112) and smaller than the diameter of the cover plate (111); the protrusion (112) protrudes out of the cylinder bottom plate (124) from the second opening (125), and the second opening (125) is connected to the first opening (123) to form the discharge port (121).

5. The open-air blast hole protection device according to claim 4, characterized in that: The opening size of the first opening (123) along the vertical direction (15) ranges from greater than the thickness of one cover plate (111) to less than the thickness of two cover plates (111).

6. The open-air blast hole protection device according to claim 4, characterized in that: The cylinder bottom plate (124) is in the shape of a semicircular ring.

7. The open-air blast hole protection device according to claim 2, characterized in that: The feeding assembly (13) comprises a feeding member (131), a horizontal moving member (132) and a vertical moving member (136); the feeding member (131) comprises a fork claw (1311), and the fork claw (1311) can correspond to the forked protrusion (112) and drive the cover member (11) to move; the horizontal moving member (132) is connected to the feeding member (131) and is used to move the feeding member (131) along the horizontal direction (14); the vertical moving member (136) is connected to the horizontal moving member (132) and is used to move the horizontal moving member (132) along the vertical direction (15).

8. The open-air blast hole protection device according to claim 7, characterized in that: The horizontal moving member (132) comprises a horizontal moving rod (133), a horizontal sleeve (134) and a horizontal hydraulic cylinder (135); the horizontal sleeve (134) extends along a horizontal direction (14); the horizontal moving rod (133) is movably arranged on the horizontal sleeve (134); the horizontal moving rod (133) is connected to the feeding member (131); the cylinder barrel of the horizontal hydraulic cylinder (135) is connected to the horizontal sleeve (134); the piston rod of the horizontal hydraulic cylinder (135) is connected to the horizontal moving rod (133); The vertical moving member (136) comprises a vertical moving rod (137), a vertical sleeve (138) and a vertical hydraulic cylinder (139); the vertical sleeve (138) extends along a vertical direction (15); the vertical moving rod (137) is movably arranged on the vertical sleeve (138); the vertical moving rod (137) is connected to the horizontal moving member (132); the cylinder barrel of the vertical hydraulic cylinder (139) is connected to the vertical sleeve (138); and the piston rod of the vertical hydraulic cylinder (139) is connected to the horizontal moving member (132).

9. The open-air blast hole protection device according to claim 1, characterized in that: The invention also comprises a magnetic suction device (3), which is arranged at the lower end of the open-pit rotary drill and corresponds to the blasting hole (2) below; the magnetic suction device (3) is arranged at a distance from the feeding assembly (13); the feeding assembly (13) transports the cover member (11) from the storage member (12) to the magnetic suction device (3); the magnetic suction device (3) can attract the cover member (11) and make the cover member (11) be stuck in the slot (31) at the bottom of the magnetic suction device (3).

10. A method for protecting an open-air blasting hole, characterized in that: The method is implemented by using the open-pit blasting hole protection device described in any one of claims 2 to 9, comprising: a plurality of cover members are stacked in a storage member along the thickness direction, an open-pit rotary drill drills a blasting hole, and then a feeding assembly moves the plurality of cover members from the storage member to the positions of the corresponding blasting holes in sequence, and the cover members cover the blasting holes, so that the open-pit rotary drill automatically protects the hole during drilling construction to reduce the blockage of the blasting hole.

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