Hole protecting device for drilling machine in drilling stage of fracture zone

Abstract

The utility model relates to the field of open blasting, and discloses a broken zone drilling machine trepanning stage hole protecting device which comprises a pipe body A and a pipe body B. Grouting openings are formed in the surfaces of the pipe body A and the pipe body B, positioning grooves are formed in the top ends of the outer walls of the pipe body A and the pipe body B, three sets of positioning blocks are fixedly connected to the outer side wall of the pipe body B, and the outer side wall of the pipe body B is fixedly connected with the positioning grooves. A grouting mechanism is arranged on the inner wall of the pipe body A, positioning mechanisms are arranged at the bottom ends of the outer walls of the pipe body A and the pipe body B, the inner wall of a sliding block is elastically connected with a triangular block through a reset spring, each positioning mechanism comprises a positioning ring, and the inner wall of each positioning ring is elastically connected with a wedge block through a limiting spring. According to the utility model, through the arrangement of the positioning mechanism, the pipe body A and the pipe body B are assembled and then are quickly spliced and connected, so that adjustment can be carried out according to the drilling depth of a rock layer to support and fix a blast hole.

Description

Technical Field

[0001] The utility model relates to the field of open-pit blasting, in particular to a hole protection device for a broken zone drilling rig in the hole opening stage. Background Art

[0002] The broken zone drill is a kind of drilling equipment used in underground engineering and mining engineering. It is mainly used to drill rocks and soil, and is usually used in conjunction with blasting or anchoring work.

[0003] In the process of open-pit mining, drilling is often difficult due to incomplete cleaning of surface debris in the blasting area or severe weathering of the surface rock and soil. When this type of rock formation is loosened by drilling and blasting, the drill rod, drill bit, and impactor are often stuck due to the collapse of the hole wall during the drilling opening stage. It takes a lot of time to deal with such problems, and even the accessories have to be discarded, which increases the loss of drilling rig parts and drilling costs. After the hole is formed, the rock wall at the hole mouth may collapse by itself before charging and blasting, resulting in fewer holes or insufficient hole depth. Therefore, a hole protection device for the broken zone drilling rig in the opening stage is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a hole protection device for a broken zone drilling rig in the hole opening stage, aiming to improve the problem of the drill rod, drill bit and impactor being stuck due to the crushing and collapse of the hole wall in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hole protection device for the hole opening stage of a broken zone drilling rig, comprising a pipe body A and a pipe body B, the surfaces of the pipe body A and the pipe body B are provided with grouting ports, the top ends of the outer walls of the pipe body A and the pipe body B are provided with positioning grooves, the outer side walls of the pipe body B are fixedly connected with three groups of positioning blocks, the inner wall of the pipe body A is provided with a grouting mechanism, the bottom ends of the outer walls of the pipe body A and the pipe body B are provided with positioning mechanisms, the positioning mechanisms include positioning rings, and the inner walls of the positioning rings are elastically connected with wedges through limit springs.

[0006] As a further description of the above technical solution:

[0007] The inner side wall of the tube body A is provided with two groups of slots, and the grouting mechanism comprises a grouting pipe, and sliders are fixedly connected to both sides of the bottom end of the grouting pipe, and the inner wall of the slider is elastically connected to a triangular block via a return spring.

[0008] As a further description of the above technical solution:

[0009] The inner wall of the tube body A is provided with an empty groove, and the positioning block is slidably connected to the inner wall of the empty groove of the tube body A.

[0010] As a further description of the above technical solution:

[0011] The inner wall of the tube body A is provided with an empty groove, and the positioning block is slidably connected to the inner wall of the empty groove of the tube body A.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the tube body A is provided with an empty groove, and the positioning block is slidably connected to the inner wall of the empty groove of the tube body A.

[0014] As a further description of the above technical solution:

[0015] The wedge block is slidably connected to the inner wall of the bottom end of the positioning ring, and the outer wall of the wedge block is in contact with the inner side wall of the positioning groove.

[0016] As a further description of the above technical solution:

[0017] The inner walls of the tube body A and the tube body B are both provided with sliding grooves, and the inner walls of the sliding grooves are slidably connected with sliders.

[0018] As a further description of the above technical solution:

[0019] One end of the return spring is fixedly connected to the inner side wall of the triangular block, the other end of the return spring is fixedly connected to the inner wall of the slider, the triangular block is slidably connected to the inner wall of the bottom end of the return spring, and the outer wall on the right side of the triangular block contacts the inner wall of the slot.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, a positioning mechanism is provided so that the pipe body A and the pipe body B can be quickly spliced ​​and connected after being assembled, so that the drilling depth of the rock layer can be adjusted to support and fix the blast hole.

[0022] 2. In the present invention, by decomposing the whole into the tube body A and the tube body B, the two groups can be separated after the blasthole support is completed, so as to facilitate the cleaning of the soil and the like in the internal rock layer.

[0023] 3. In the utility model, by providing a grouting mechanism, when supporting the blast hole, the grouting pipe can enter the interior of the pipe body A and the pipe body B to inject grout outward through the grouting port, thereby increasing the adhesion between the whole and the hole wall, making the whole better supported in the blast hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main three-dimensional structure of a hole protection device for a broken zone drilling rig in the hole opening stage proposed by the utility model;

[0025] Figure 2This is a structural schematic diagram of the separated states of the pipe body A, pipe body B and grouting mechanism of a hole protection device for a broken zone drilling rig in the hole opening stage proposed by the utility model;

[0026] Figure 3 It is a partial cross-sectional structural schematic diagram of a pipe body A of a hole protection device for a broken zone drilling rig in the hole opening stage proposed by the utility model;

[0027] Figure 4 The utility model is a hole protection device for a broken zone drilling rig in the hole opening stage. Figure 3 The enlarged structural diagram of part A in the middle;

[0028] Figure 5 The utility model is a schematic diagram of a partial cross-sectional structure of a slider of a hole protection device of a broken zone drilling rig in the hole opening stage.

[0029] Legend:

[0030] 1. Pipe body A; 2. Pipe body B; 3. Positioning block; 4. Grouting port; 5. Grouting mechanism; 51. Grouting pipe; 52. Slider; 53. Return spring; 54. Triangle block; 6. Positioning groove; 7. Positioning mechanism; 71. Positioning ring; 72. Limit spring; 73. Wedge block; 8. Slot. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-Figure 3 The utility model provides an embodiment: a hole protection device for a broken zone drilling rig in the hole opening stage, comprising a pipe body A1 and a pipe body B2, the surfaces of the pipe body A1 and the pipe body B2 are in contact, a positioning ring 71 is fixedly connected to the bottom end of the outer wall of the pipe body A1, the positioning ring 71 is semi-annular and fits with the pipe body A1 and the pipe body B2, and a guide groove fitting the positioning ring 71 is provided at the top of the outer wall of the pipe body A1 and the pipe body B2, so that the positioning ring 71 can slide on the inner wall of the top of the pipe body A1 and the pipe body B2, a grouting port 4 is provided on the surface of the pipe body A1 and the pipe body B2, and by setting the grouting port 4, the grouting pipe 51 can be used to grout the pipe body A1 and the pipe body B2 and the rock layer from the grouting port 4, and the top of the outer wall of the pipe body A1 and the pipe body B2 is provided with a positioning groove 6.

[0033] Reference Figure 2-Figure 4Three groups of positioning blocks 3 are fixedly connected to the outer side wall of the tube body B2, and an empty groove is opened on the inner wall of the tube body A1. The positioning blocks 3 are slidably connected to the inner wall of the empty groove of the tube body A1. The inner wall of the tube body A1 is opened with an empty groove that fits the positioning blocks 3, and the inner wall of the empty groove is opened with a guide groove that fits the top protrusion of the positioning blocks 3, so that the positioning blocks 3 can still move upward when entering the inner wall of the empty groove of the tube body A1, and the position of the positioning blocks 3 after the inner wall of the tube body A1 moves upward will align the planes of the tube body A1 and the tube body B2, and the inner wall of the tube body A1 is provided with a grouting mechanism 5.

[0034] Reference Figure 2-Figure 4 The bottom ends of the outer walls of the tube bodies A1 and B2 are both provided with positioning mechanisms 7, which include positioning rings 71, the inner wall of the positioning rings 71 being elastically connected with wedge blocks 73 through limiting springs 72, one end of the limiting springs 72 being fixedly connected to the inner side wall of the wedge blocks 73, and the other end of the limiting springs 72 being fixedly connected to the inner wall of the bottom end of the positioning rings 71, the function of the limiting springs 72 being that when the inclined surface of the wedge blocks 73 is squeezed and moved, the position after the squeezing and movement can be automatically reset, the wedge blocks 73 are slidably connected to the inner wall of the bottom end of the positioning rings 71, the outer wall of the wedge blocks 73 is in contact with the inner side wall of the positioning grooves 6, and the contact between the two connects and fixes a group of tube bodies A1 and B2 as a whole with the next group of combined wholes, the inner side wall of the tube body A1 is provided with two groups of card grooves 8, the position of the card grooves 8 is provided at the same plane as the grouting port 4, so that the bottom end of the grouting pipe 51 after it is lowered can be aligned with the grouting port 4.

[0035] Reference Figure 2-Figure 3 and Figure 5 The grouting mechanism 5 includes a grouting pipe 51, and sliders 52 are fixedly connected to both sides of the bottom end of the grouting pipe 51. The inner walls of the pipe body A1 and the pipe body B2 are provided with slide grooves, and the inner walls of the slide grooves are slidably connected with the sliders 52. By setting two sets of sliders 52, the position of the grouting pipe 51 after the pipe body A1 and the pipe body B2 are lowered and moved can be aligned with the grouting port 4. The inner wall of the slider 52 is elastically connected to a triangular block 54 through a return spring 53, and one end of the return spring 53 is fixedly connected to the inner wall of the triangular block 54. The other end of the reset spring 53 is fixedly connected to the inner wall of the slider 52. The reset spring 53 is provided to automatically reset the position of the triangular block 54 after being squeezed and moved. The triangular block 54 is slidably connected to the inner wall at the bottom end of the reset spring 53. The outer wall on the right side of the triangular block 54 contacts the inner wall of the slot 8. The contact between the two moves the grouting pipe 51 to the position corresponding to the slot 8 on the inner walls of the pipe body A1 and the pipe body B2 for fixing. It will not move without the influence of external force.

[0036] Working principle: During use, after drilling a hole in the rock layer with the drill rig impactor, the drill bit is taken out from the inside of the rock layer. At this time, the positioning block 3 on the outside of the tube body B2 is plugged into the empty groove on the inner wall of the tube body A1, and the tube body A1 is pulled downward to move the positioning block 3 on the inner wall of the tube body A1, so that the tube body A1 and the tube body B2 are in the same plane. At this time, the drill rig impactor can use hydraulic pressure to press the whole composed of the spliced ​​tube body A1 and the tube body B2 into the hole, thereby supporting the blasthole of the rock layer.

[0037] When the tube body A1 and the tube body B2 are integrally spliced ​​and enter the blast hole of the rock layer, the sliders 52 on both sides of the grouting tube 51 can be inserted into the slide grooves of the tube body A1 and the tube body B2. When the grouting tube 51 enters the slide groove, the outer wall of the tube body A1 will squeeze the inclined surface of the triangular block 54, thereby squeezing the triangular block 54 to move on the inner wall of the slider 52, and allowing the return spring 53 to be elastically compressed until the slider 52 moves to the position of the slot 8. The two groups of triangular blocks 54 will be elastically acted upon by the return spring 53 to restore them to their initial positions, thereby contacting the slot 8 at the current position of the tube body A1, thereby fixing the position of the grouting tube 51 after the slider 52 drives it to move, so that the bottom end of the grouting tube 51 will be aligned with the grouting port 4. At this time, grouting can be carried out through the top end of the grouting tube 51, thereby entering the gap between the tube body A1 and the blast hole along the grouting port 4, thereby grouting to increase viscosity.

[0038] At the same time, when splicing is required, the positioning ring 71 after the overall bottom end combination of another group of pipe bodies A1 and B2 is inserted into the top of the pipe bodies A1 and B2, and the inclined surface of the wedge block 73 is squeezed by the top of the pipe bodies A1 and B2, so that the wedge block 73 moves on the inner wall of the positioning ring 71 until the positioning ring 71 as a whole completely enters the inner wall of the pipe bodies A1 and B2, and then the pipe bodies A1 and B2 are rotated until they are at the positioning groove 6 at the top of the pipe bodies A1 and B2, and the wedge block 73 is elastically acted upon by the limit spring 72 to restore it to its initial position, thereby contacting the wedge block 73 with the inner wall of the positioning groove 6, so that the other group of pipe bodies A1 and B2 are spliced ​​with the pipe bodies A1 and B2 that have entered the rock layer, and the splicing between the two will be in a staggered clamping state, so as to increase the connection stability between the two groups of combined casings.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hole protection device for a drill rig in a broken zone during the hole opening stage, comprising a pipe body A (1) and a pipe body B (2), characterized in that: The surfaces of the tube body A (1) and the tube body B (2) are both provided with grouting ports (4); the top ends of the outer walls of the tube body A (1) and the tube body B (2) are both provided with positioning grooves (6); the outer side walls of the tube body B (2) are fixedly connected with three groups of positioning blocks (3); the inner wall of the tube body A (1) is provided with a grouting mechanism (5); the bottom ends of the outer walls of the tube body A (1) and the tube body B (2) are both provided with positioning mechanisms (7); the positioning mechanisms (7) include positioning rings (71); The inner wall of the positioning ring (71) is elastically connected to a wedge block (73) via a limit spring (72).

2. The hole protection device for the broken zone drilling rig in the hole opening stage according to claim 1 is characterized in that: The inner side wall of the tube body A (1) is provided with two groups of slots (8), the grouting mechanism (5) comprises a grouting pipe (51), both sides of the bottom end of the grouting pipe (51) are fixedly connected with sliders (52), and the inner wall of the slider (52) is elastically connected with a triangular block (54) via a return spring (53).

3. The hole protection device for the broken zone drilling rig in the hole opening stage according to claim 1 is characterized by: The inner wall of the tube body A (1) is provided with a hollow groove, and the positioning block (3) is slidably connected to the inner wall of the hollow groove of the tube body A (1).

4. The hole protection device for the broken zone drilling rig in the hole opening stage according to claim 1 is characterized in that: The surfaces of the tube body A (1) and the tube body B (2) are in contact with each other, and the positioning ring (71) is fixedly connected to the bottom end of the outer wall of the tube body A (1).

5. The hole protection device for the broken zone drilling rig in the hole opening stage according to claim 1 is characterized in that: One end of the limit spring (72) is fixedly connected to the inner side wall of the wedge block (73), and the other end of the limit spring (72) is fixedly connected to the inner wall of the bottom end of the positioning ring (71).

6. The hole protection device for the broken zone drilling rig in the hole opening stage according to claim 1 is characterized by: The wedge block (73) is slidably connected to the inner wall of the bottom end of the positioning ring (71), and the outer wall of the wedge block (73) is in contact with the inner side wall of the positioning groove (6).

7. The hole protection device for the broken zone drilling rig in the hole opening stage according to claim 2 is characterized in that: The inner walls of the tube body A (1) and the tube body B (2) are both provided with a sliding groove, and the inner walls of the sliding groove are slidably connected to a sliding block (52).

8. The hole protection device for the broken zone drilling rig in the hole opening stage according to claim 2 is characterized by: One end of the return spring (53) is fixedly connected to the inner side wall of the triangular block (54), the other end of the return spring (53) is fixedly connected to the inner wall of the slider (52), the triangular block (54) is slidably connected to the inner wall of the bottom end of the return spring (53), and the outer wall on the right side of the triangular block (54) contacts the inner wall of the slot (8).

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