A slotting and drilling device for controlling over-excavation by tunnel perimeter blasting

Abstract

The present invention belongs to the technical field of drilling and blasting excavation for tunnels and underground projects, and in particular relates to a slotting and drilling device for controlling over-excavation caused by blasting around tunnel holes. The device comprises: a driving portion; a connecting portion, one end of which is connected to the driving portion; a drilling portion, which is connected to the other end of the connecting portion; a slotting portion, which is slidably connected to the outside of the connecting portion; and a transmission portion, which is disposed within the connecting portion and is in transmission connection with the slotting portion, and is detachably connected to the driving portion. The present invention eliminates the need for switching equipment when constructing irregularly shaped holes, making it convenient and quick to use, thereby speeding up construction and reducing construction costs. Furthermore, the connecting portion does not move during slotting, ensuring the accuracy of the slotting position and avoiding deviations.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel and underground engineering drilling and blasting excavation, and in particular relates to a slotting and drilling device for controlling over-excavation by blasting around tunnel holes. Background Art

[0002] With the continuous development of social economy and the steady progress of urbanization, the scale of highway projects in my country has gradually expanded. Highway construction directly affects the future development of cities and people's transportation. Tunnels are the main content of highway construction.

[0003] During tunnel construction, the drilling and blasting method is mostly used to excavate the tunnel. When using the drilling and blasting method to excavate the tunnel, the blasting holes are mostly irregular-shaped holes. The setting of irregular-shaped holes can effectively avoid the problem of tunnel over-excavation. However, the existing irregular-shaped blast holes require switching equipment when drilling, which increases construction costs and reduces construction efficiency.

[0004] Therefore, a slotting and drilling device for controlling over-excavation by blasting in tunnel periphery is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a slotting and drilling device for controlling over-excavation caused by blasting in the periphery of a tunnel, so as to solve the above-mentioned problems.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A slotting and drilling device for controlling over-excavation by blasting around tunnel holes, comprising:

[0008] Drive unit;

[0009] a connecting portion, one end of which is connected to the driving portion;

[0010] a drilling portion connected to the other end of the connecting portion;

[0011] a groove portion, slidably connected to the outer side of the connecting portion;

[0012] The transmission part is arranged in the connecting part, the transmission part is in transmission connection with the cutting part, and the cutting part is detachably connected with the driving part.

[0013] In a slotting and drilling device for controlling over-excavation by blasting around a tunnel according to the present invention, the driving unit comprises:

[0014] Fixed plate;

[0015] The drilling rig is fixedly installed on one side of the fixing plate.

[0016] In a slotting and drilling device for controlling over-excavation by blasting around a tunnel according to the present invention, the connecting portion comprises:

[0017] A connecting pipe is coaxially arranged with the output shaft of the drilling rig;

[0018] At least one slide groove is provided on the outer side wall of the connecting pipe, and the slide groove is arranged along the length direction of the connecting pipe.

[0019] In a slotting and drilling device for controlling over-excavation by blasting around a tunnel according to the present invention, the drilling unit comprises:

[0020] A drill bit connecting rod, coaxially fixed to one end of the connecting pipe;

[0021] The drill bit is coaxially fixed to the outer side of the drill bit connecting rod, and the drill bit is located at an end of the drill bit connecting rod away from the drilling rig.

[0022] In a slotting and drilling device for controlling over-excavation by tunnel perimeter blasting according to the present invention, the transmission unit comprises:

[0023] A threaded rod is coaxially arranged in the connecting tube, one end of the threaded rod is coaxially connected to a shaft seat, and the shaft seat is fixed in the connecting tube;

[0024] a polished rod, coaxially fixed to an end of the threaded rod away from the shaft seat, the diameter of the polished rod being smaller than the diameter of the threaded rod, the polished rod extending out of the connecting tube and coaxially fixed to the output shaft of the drilling rig via a connector;

[0025] A threaded ring is threadedly connected to the outside of the threaded rod / is hollowly sleeved on the outside of the polished rod. At least one connecting block is fixedly connected to the outer side wall of the threaded ring, and the connecting block is slidably connected to the sliding groove.

[0026] In a slotting and drilling device for controlling over-excavation by blasting around a tunnel according to the present invention, the slotting portion comprises:

[0027] a sliding sleeve slidably connected to the outer side wall of the connecting pipe, wherein the inner side wall of the sliding sleeve is fixedly connected to an end of the connecting block extending out of the sliding groove;

[0028] a plurality of second meshing teeth, circumferentially and evenly spaced apart, arranged on the inner side wall of the sliding sleeve, wherein the second meshing teeth penetrate one end of the sliding sleeve;

[0029] a plurality of first meshing teeth, circumferentially and evenly spaced apart, arranged on the outer wall of the connector; the plurality of second meshing teeth meshing with the plurality of first meshing teeth;

[0030] The grooving knife is fixed on the outer side wall of the sliding sleeve.

[0031] In a grooving and drilling device for controlling over-excavation by blasting around a tunnel according to the present invention, a limit handle is fixedly connected to the outer wall of the connecting pipe, the limit handle is close to the fixed plate, the limit handle is detachably connected to the limit groove, the limit groove is provided on one side of the sliding sleeve, one end of the limit groove passes through the sliding sleeve, a magnetic block is fixedly connected to one side of the limit handle, and the magnetic block is in magnetic contact with the inner wall of the limit groove.

[0032] In a grooving and drilling device for controlling over-excavation by tunnel perimeter eye blasting of the present invention, the drill bit connecting rod and the drill bit are fixedly connected via a conveying blade, and the conveying blade is spirally arranged between the drill bit connecting rod and the drill bit.

[0033] Compared with the prior art, the present invention has the following advantages and technical effects:

[0034] When the device of the present invention is in operation, the grooving part is first connected to the driving part. At this time, the driving part drives the drilling part through the connecting part, and the blasting hole is drilled through the drilling part to complete the drilling work; the driving part is stopped, the grooving part is separated from the driving part, the grooving part is connected to the transmission part, and the driving part is started. At this time, the drilling part does not move, and the driving part moves through the grooving part of the transmission part to open a groove on the side wall of the blasting hole that has been drilled.

[0035] In the present invention, when constructing special-shaped holes, there is no need to switch equipment, and the use is convenient and quick, thereby accelerating the construction speed and reducing the construction cost. At the same time, the connecting part does not move when cutting the groove, ensuring the accuracy of the groove position and avoiding the occurrence of deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0037] Figure 1 It is the front view of the present invention;

[0038] Figure 2 Schematic diagram of the internal structure of the present invention;

[0039] Among them, 1. Drilling rig; 2. Fixed plate; 3. Connecting head; 4. First meshing tooth; 5. Connecting pipe; 6. Sliding sleeve; 7. Grooving knife; 8. Limiting groove; 9. Limiting handle; 10. Magnetic block; 11. Drill bit; 12. Drill bit connecting rod; 13. Conveying blade; 14. External fixing block; 15. Internal fixing block; 17. Shaft seat; 18. Slide groove; 19. Threaded rod; 20. Threaded ring; 21. Connecting block; 22. Second meshing tooth; 23. Polish rod. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Reference Figures 1 to 2 The present invention discloses a slotting and drilling device for controlling over-excavation by blasting around tunnel holes, comprising:

[0043] Drive unit;

[0044] A connecting portion, one end of which is connected to the driving portion;

[0045] a drilling portion connected to the other end of the connecting portion;

[0046] a groove portion, slidably connected to the outer side of the connecting portion;

[0047] The transmission part is arranged in the connecting part, the transmission part is in transmission connection with the cutting groove part, and the cutting groove part is detachably connected with the driving part.

[0048] When the device of the present invention is in operation, the grooving part is first connected to the driving part. At this time, the driving part drives the drilling part through the connecting part, and the blasting hole is drilled through the drilling part to complete the drilling work; the driving part is stopped, the grooving part is separated from the driving part, the grooving part is connected to the transmission part, and the driving part is started. At this time, the drilling part does not move, and the driving part moves through the grooving part of the transmission part to open a groove on the side wall of the blasting hole that has been drilled.

[0049] In the present invention, when constructing special-shaped holes, there is no need to switch equipment, and the use is convenient and quick, thereby accelerating the construction speed and reducing the construction cost. At the same time, the connecting part does not move when cutting the groove, ensuring the accuracy of the groove position and avoiding the occurrence of deviation.

[0050] In a feasible solution, the driving unit includes:

[0051] Fixed plate 2;

[0052] The drilling rig 1 is fixedly mounted on one side of the fixing plate 2 .

[0053] In one feasible solution, the connection portion includes:

[0054] The connecting pipe 5 is coaxially arranged with the output shaft of the drilling rig 1;

[0055] At least one slide groove 18 is provided on the outer side wall of the connecting pipe 5 , and the slide groove 18 is provided along the length direction of the connecting pipe 5 .

[0056] In one feasible solution, the drilling unit includes:

[0057] The drill bit connecting rod 12 is coaxially fixed to one end of the connecting pipe 5;

[0058] The drill bit 11 is coaxially fixed to the outside of the drill bit connecting rod 12 . The drill bit 11 is located at the end of the drill bit connecting rod 12 away from the drilling rig 1 .

[0059] An external fixing block 14 is sleeved on the outer side wall of the drill connecting rod 12, and the external fixing block 14 is fixedly connected to the drill connecting rod 12. The end of the drill connecting rod 12 is threadedly connected to an internal fixing block 15, and the internal fixing block 15 abuts against the external fixing block 14. The internal fixing block 15 and the external fixing block 14 are both fixedly connected to the connecting pipe 5, thereby making the connection between the drill connecting rod 12 and the sliding sleeve 6 more secure.

[0060] In one feasible solution, the transmission unit includes:

[0061] The threaded rod 19 is coaxially arranged in the connecting tube 5. One end of the threaded rod 19 is coaxially connected to the shaft seat 17. The shaft seat 17 is fixed in the connecting tube 5.

[0062] A polished rod 23 is coaxially fixed to the end of the threaded rod 19 away from the shaft seat 17. The diameter of the polished rod 23 is smaller than that of the threaded rod 19. The polished rod 23 extends out of the connecting tube 5 and is coaxially fixed to the output shaft of the drilling rig 1 through the connector 3.

[0063] The threaded ring 20 is threadedly connected to the outside of the threaded rod 19 / is hollowly sleeved on the outside of the polished rod 23. At least one connecting block 21 is fixedly connected to the outer wall of the threaded ring 20, and the connecting block 21 is slidably connected in the sliding groove 18.

[0064] In a feasible solution, the cutting portion includes:

[0065] The sliding sleeve 6 is slidably connected to the outer wall of the connecting pipe 5, and the inner wall of the sliding sleeve 6 is fixedly connected to the end of the connecting block 21 extending out of the sliding groove 18;

[0066] A plurality of second meshing teeth 22 are provided on the inner side wall of the sliding sleeve 6 at equal intervals in the circumferential direction, and the second meshing teeth 22 pass through one end of the sliding sleeve 6;

[0067] A plurality of first meshing teeth 4 are circumferentially and evenly spaced on the outer wall of the connector 3 , and the plurality of second meshing teeth 22 mesh with the plurality of first meshing teeth 4 ;

[0068] The grooving knife 7 is fixed to the outer side wall of the sliding sleeve 6 .

[0069] After the drilling is completed, the drilling machine 1 stops working and slides the sliding sleeve 6 away from the drilling machine 1 until the threaded ring 20 is threadedly connected with the threaded rod 19. At this time, the connecting pipe 5 is fixed by the limit handle 9. The drilling machine 1 drives the threaded rod 19 to rotate through the polished rod 23, driving the sliding sleeve 6 to move and cut a groove on the side wall of the blasthole.

[0070] In a feasible solution, a limit handle 9 is fixed on the outer wall of the connecting tube 5, the limit handle 9 is close to the fixed plate 2, and the limit handle 9 is detachably connected to the limit groove 8. The limit groove 8 is opened on one side of the sliding sleeve 6, and one end of the limit groove 8 passes through the sliding sleeve 6. A magnetic block 10 is fixed on one side of the limit handle 9, and the magnetic block 10 is in magnetic contact with the inner wall of the limit groove 8.

[0071] The function of the limit handle 9 is to fix the connecting pipe 5 when cutting the groove, and at the same time to limit the sliding sleeve 6 when drilling. The magnetic block 10 prevents the limit handle 9 from falling out of the limit groove 8 when there is no external force.

[0072] In a feasible solution, the drill bit connecting rod 12 and the drill bit 11 are fixedly connected via a conveying blade 13 , and the conveying blade 13 is spirally arranged between the drill bit connecting rod 12 and the drill bit 11 .

[0073] The conveying blades 13 convey the soil during the drilling process to the rear of the drill bit 11 .

[0074] Specific working process:

[0075] First, the sliding sleeve 6 is moved to one end of the connecting tube 5. At this time, the second meshing teeth 22 inside the sliding sleeve 6 mesh with the first meshing teeth 4 outside the connector 3. The connector 3 has a slope on its circumference near the sliding sleeve 6 to facilitate the meshing of the second meshing teeth 22 and the first meshing teeth 4. At this time, the drilling rig 1 is started. The drilling rig 1 drives the sliding sleeve 6 to rotate through the connector 3. The sliding sleeve 6 drives the connecting tube 5 to rotate, and then drives the drill bit 11 to rotate, thereby drilling a blasting hole.

[0076] The soil generated during the drilling process is transported to the rear of the drill bit 11 by the action of the conveying blades 13, and then transported to the outside of the drill hole by the action of the spiral conveying trough opened on the outside of the connecting pipe 5;

[0077] After the drilling is completed, the drilling rig 1 stops working and slides the sliding sleeve 6 away from the drilling rig 1 until the threaded ring 20 is threadedly connected to the threaded rod 19. At this time, the connecting pipe 5 is fixed by the limit handle 9, and the drilling rig 1 drives the threaded rod 19 to rotate through the polished rod 23, driving the sliding sleeve 6 to move, cutting a groove on the side wall of the blasthole, and then the equipment is taken out and the drilling is completed.

[0078] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0079] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A slotting and drilling device for controlling over-excavation by blasting around tunnels, characterized in that: include: Drive unit; a connecting portion, one end of which is connected to the driving portion; a drilling portion connected to the other end of the connecting portion; a groove portion, slidably connected to the outer side of the connecting portion; a transmission portion, disposed in the connecting portion, the transmission portion being in transmission connection with the cutting portion, and the cutting portion being detachably connected to the driving portion; The driving unit includes: Fixed plate (2); A drilling rig (1) is fixedly mounted on one side of the fixing plate (2); The connecting portion includes: A connecting pipe (5) is coaxially arranged with the output shaft of the drilling rig (1); At least one chute (18) is provided on the outer side wall of the connecting pipe (5), and the chute (18) is provided along the length direction of the connecting pipe (5); The drilling unit comprises: A drill bit connecting rod (12) is coaxially fixed to one end of the connecting pipe (5); A drill bit (11) is coaxially fixed to the outside of the drill bit connecting rod (12), and the drill bit (11) is located at an end of the drill bit connecting rod (12) away from the drilling machine (1); The transmission part includes: A threaded rod (19) is coaxially arranged in the connecting tube (5), one end of the threaded rod (19) is coaxially rotatably connected to a shaft seat (17), and the shaft seat (17) is fixed in the connecting tube (5); A polished rod (23) is coaxially fixed to one end of the threaded rod (19) away from the shaft seat (17); the diameter of the polished rod (23) is smaller than the diameter of the threaded rod (19); the polished rod (23) extends out of the connecting pipe (5) and is coaxially fixed to the output shaft of the drilling rig (1) through a connector (3); A threaded ring (20) is loosely sleeved on the outside of the polished rod (23) when drilling, and is threadedly connected to the outside of the threaded rod (19) when grooving. At least one connecting block (21) is fixedly connected to the outer wall of the threaded ring (20), and the connecting block (21) is slidably connected to the slide groove (18); The cutting portion comprises: A sliding sleeve (6) is slidably connected to the outer wall of the connecting pipe (5), and the inner wall of the sliding sleeve (6) is fixedly connected to an end of the connecting block (21) extending out of the sliding groove (18); A plurality of second meshing teeth (22) are arranged at equal intervals in the circumferential direction on the inner side wall of the sliding sleeve (6), and the second meshing teeth (22) pass through one end of the sliding sleeve (6); A plurality of first meshing teeth (4) are arranged on the outer wall of the connector (3) at equal intervals in the circumferential direction, and the plurality of second meshing teeth (22) and the plurality of first meshing teeth (4) are meshed with each other; A grooving knife (7) fixedly connected to the outer side wall of the sliding sleeve (6); A limit handle (9) is fixedly connected to the outer wall of the connecting tube (5), the limit handle (9) is close to the fixing plate (2), and the limit handle (9) is detachably connected to the limit groove (8). The limit groove (8) is provided on one side of the sliding sleeve (6), and one end of the limit groove (8) passes through the sliding sleeve (6). A magnetic block (10) is fixedly connected to one side of the limit handle (9), and the magnetic block (10) is in magnetic contact with the inner wall of the limit groove (8).

2. A slotting and drilling device for controlling over-excavation by tunnel perimeter blasting according to claim 1, characterized in that: The drill bit connecting rod (12) and the drill bit (11) are fixedly connected via a conveying blade (13), and the conveying blade (13) is spirally arranged between the drill bit connecting rod (12) and the drill bit (11).

Images