Drilling device for blasting

Abstract

This invention belongs to the field of blasting engineering technology, and particularly relates to a drilling device for blasting. The drilling device includes a transmission sleeve and an adjusting rod. The transmission sleeve is hollow, with one end connected to a drive device and the other end connected to a drill bit. The adjusting rod is disposed inside the transmission sleeve and includes an adjusting section, a first connecting section, a guide section, and a second connecting section. The adjusting section passes through an adjusting assembly, which adjusts the axial position of the adjusting section relative to the transmission sleeve. The first connecting section connects the adjusting section and the guide section. The guide section passes through a guide block disposed within the transmission sleeve. The second connecting section connects the guide section and a steering block. The steering block is movably connected to the end of the transmission sleeve, and the drill bit is detachably connected to the steering block. All connection points of the adjusting rod are connected by universal joints. This invention can adjust the angle of the drill bit, thereby achieving eccentric drilling and obtaining a variable diameter hole.

Description

Technical Field

[0001] The invention belongs to the technical field of blasting engineering, and in particular relates to a drilling device for blasting. Background Art

[0002] Blasting is a technology that uses the compression, loosening, destruction, throwing and killing effects of explosives in the air, water, soil and rock media or objects to achieve the desired purpose. When explosive bags or charges explode in soil and rock media or structures, the soil and rock media or structures will be compressed, deformed, destroyed, loosened and thrown. It is mainly used for earthwork engineering, demolition of buildings and structures, etc.

[0003] In existing blasting, it is necessary to first drill a hole in the medium and then fill the drill with explosives. Traditional blasting holes are straight holes with the same diameter everywhere. Straight holes are easy to drill, but they are not suitable for blasting. The impact force generated by the ignition of explosives mainly rushes out along the direction of the hole mouth, and the requirements for hole mouth sealing are high. If the hole mouth is not sealed tightly, the impact force of the blasting will be weakened, or even the blasting will fail.

[0004] In this regard, a trumpet-shaped hole or a waist-shaped hole whose diameter increases with depth can be used to release the impact force generated by the blasting sufficiently before impacting the medium on the hole wall. However, it is inconvenient to drill trumpet-shaped holes or waist-shaped holes. The eccentric range of a general eccentric drill is very limited, and it is impossible to drill a trumpet-shaped hole with a sufficiently large diameter change. Summary of the invention

[0005] The purpose of the embodiment of the present invention is to provide a drilling device for blasting, aiming to solve the problem that it is inconvenient to drill trumpet-shaped holes or waist-shaped holes. The eccentric range of general eccentric drills is very limited and it is impossible to drill trumpet-shaped holes with a sufficiently large diameter change.

[0006] The embodiment of the present invention is implemented as follows: a drilling device for blasting, the drilling device for blasting comprising a transmission sleeve and an adjusting rod;

[0007] The transmission sleeve is hollow, one end of the transmission sleeve is used to connect with the driving device, and the other end is used to connect with the drill bit;

[0008] The adjusting rod is arranged inside the transmission sleeve, and the adjusting rod comprises an adjusting section, a first connecting section, a guiding section and a second connecting section; the adjusting section passes through an adjusting assembly, and the adjusting assembly is used to adjust the axial position of the adjusting section relative to the transmission sleeve; the first connecting section is used to connect the adjusting section and the guiding section; the guiding section passes through a guiding block arranged inside the transmission sleeve; the second connecting section is used to connect the guiding section and the steering block; the steering block is movably connected to the end of the transmission sleeve, and the drill bit is detachably connected to the steering block;

[0009] Each connection position of the adjusting rod is connected by a universal joint.

[0010] A drilling device for blasting provided by an embodiment of the present invention can change the orientation of a drill bit arranged on a steering block by setting an adjustment rod, thereby changing the diameter of the drilled hole to obtain a variable diameter hole, and can conveniently drill out a trumpet-shaped hole, a waist-shaped hole, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The overall structure diagram of the drilling device for blasting provided by the embodiment of the present invention;

[0012] Figure 2 A structural diagram of an adjustment assembly of a drilling device for blasting provided in an embodiment of the present invention;

[0013] Figure 3 A structural diagram of a guide portion of a drilling device for blasting provided in an embodiment of the present invention;

[0014] Figure 4 A structural diagram of a steering block of a drilling device for blasting provided in an embodiment of the present invention.

[0015] In the accompanying drawings: 1, drill bit; 2, steering block; 3, second connecting section; 4, guide section; 5, first connecting section; 6, transmission sleeve; 7, adjustment section; 8, threaded section; 9, adjustment ring; 10, fixing sleeve; 11, annular groove; 12, sealing ring; 13, guide hole; 14, baffle; 15, guide block. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0018] like Figure 1-4 As shown, an embodiment of the present invention provides a drilling device for blasting, and the drilling device for blasting includes a transmission sleeve 6 and an adjusting rod;

[0019] The transmission sleeve 6 is hollow, one end of the transmission sleeve 6 is used to connect with the driving device, and the other end is used to connect with the drill bit 1;

[0020] The adjusting rod is arranged inside the transmission sleeve 6, and the adjusting rod comprises an adjusting section 7, a first connecting section 5, a guiding section 4 and a second connecting section 3; the adjusting section 7 passes through an adjusting assembly, and the adjusting assembly is used to adjust the axial position of the adjusting section 7 relative to the transmission sleeve 6; the first connecting section 5 is used to connect the adjusting section 7 and the guiding section 4; the guiding section 4 passes through a guiding block 15 arranged inside the transmission sleeve 6; the second connecting section 3 is used to connect the guiding section 4 and the steering block 2; the steering block 2 is movably connected to the end of the transmission sleeve 6, and the drill bit 1 is detachably connected to the steering block 2;

[0021] Each connection position of the adjusting rod is connected by a universal joint.

[0022] In this embodiment, the transmission sleeve 6 is hollow, and cooling water can be passed into the transmission sleeve 6 during use, which can not only cool the drill bit 1, but also play a role in flushing the medium.

[0023] In this embodiment, the adjusting rod is arranged in multiple sections, and the sections are connected by universal joints. The end of the adjusting section 7 can be set to a square shape and connected to the driving device to transmit torque. Of course, the transmission sleeve 6 itself can also transmit torque. The adjusting rod transmission is preferably used because the adjusting rod itself is made in the form of a universal joint, which can transmit higher torque and has good stability.

[0024] In this embodiment, the driving device mainly includes a motor and a connecting structure. The connecting structure can be of various types. If the transmission sleeve 6 is used for transmission, it can be set as a sleeve rod with an internal thread to be connected to the transmission sleeve 6; if the adjustment rod is used for transmission, a sleeve rod with a square hole can be used, and then it can be connected and fixed by a threaded sleeve transmission sleeve 6. This connection can be performed as needed, and the present invention does not specifically limit the specific connection method.

[0025] In this embodiment, the universal joint can transmit torque at a large angle at the connection point, which belongs to the use of the existing transmission structure. The present invention does not limit the specific form of the universal joint.

[0026] The blasting drilling device provided in the embodiment of the present invention can change the orientation of the drill bit 1 arranged on the steering block 2 by setting an adjustment rod, thereby changing the diameter of the drilled hole to obtain a variable diameter hole, and can easily drill out a trumpet-shaped hole, a waist-shaped hole, etc.

[0027] As an optional embodiment of the present invention, the adjustment assembly includes an adjustment ring 9;

[0028] An annular groove 11 is provided on the inner wall of the transmission sleeve 6 at a position corresponding to the adjustment section 7, and the adjustment ring 9 is embedded in the annular groove 11. A sealing ring 12 is provided on the side wall of the annular groove 11 facing the adjustment ring 9.

[0029] An adjusting window is provided on the transmission sleeve 6 at a position facing the adjusting ring 9, and an adjusting tooth is provided on a side of the adjusting ring 9 facing the adjusting window, and the adjusting ring 9 is driven to rotate by the adjusting tooth;

[0030] A fixing sleeve 10 is sleeved on the adjusting section 7, and the adjusting section 7 and the fixing sleeve 10 are threadedly connected, and the fixing sleeve 10 and the adjusting ring 9 are connected as a whole through a cantilever; the rotation of the adjusting ring 9 drives the fixing sleeve 10 to rotate, thereby driving the adjusting section 7 to move axially along the transmission sleeve 6, so that the adjusting rod is straightened or slowed down to change the direction of the steering block 2, thereby adjusting the direction of the drill bit 1.

[0031] In this embodiment, by providing the adjusting ring 9, the adjusting ring 9 can be rotated by using a tool (such as a flat-blade screwdriver) or by hand, so that the fixing sleeve 10 fixed as a whole with the adjusting ring 9 can rotate. Since the adjusting ring 9 is embedded in the annular groove 11 and cannot move axially along the transmission sleeve 6, the adjusting section 7 threadedly connected to the fixing sleeve 10 will move along the axial direction of the transmission sleeve 6, so that the adjusting rod is straightened or slowed down, thereby pulling the steering block 2, changing the direction of the steering block 2, and making the working end of the drill bit 1 close to or away from the axis of the transmission sleeve 6. In this embodiment, it can be understood that when the adjusting rod is straightened, the deflection of the drill bit 1 is minimal or even does not occur, and when the adjusting rod is slowed down to the maximum extent, the deflection of the drill bit 1 reaches the maximum angle.

[0032] As an optional embodiment of the present invention, the guide block 15 is fixedly disposed in the middle of the transmission sleeve 6, and a guide hole 13 is opened on the guide block 15, and the guide section 4 passes through the guide hole 13;

[0033] The opening of the guide hole 13 is configured to be in a teardrop shape, and the point where the curvature radius of the teardrop-shaped opening is the largest is located at the center of the guide block 15 , and the center of the guide block 15 is concentric with the axis of the transmission sleeve 6 .

[0034] As an optional embodiment of the present invention, the guide section 4 is provided with two baffles 14, the two baffles 14 are respectively located on both sides of the guide block 15, and a spring is provided on the portion of the guide section 4 located on the guide block 15, and the spring is used to make the two baffles 14 close to the wall surface of the guide block 15;

[0035] The diameter of the blocking piece 14 is greater than the maximum curvature radius of the guide hole 13 .

[0036] In this embodiment, by setting the guide hole 13 to have a teardrop shape, the larger the deflection angle of the drill bit 1, the farther the guide section 4 is from the axis of the transmission sleeve 6, and the more the baffle 14 deviates from the center of the guide hole 13. When water is passed into the transmission sleeve 6, the water can enter one end of the drill bit 1 at a larger flow rate, thereby realizing large-displacement cooling. Therefore, the present invention realizes the synchronous adjustment of the cooling amount and the deflection angle.

[0037] As an optional embodiment of the present invention, the steering block 2 is configured to be spherical, one end of the steering block 2 facing the transmission sleeve 6 is fixedly connected to the second connecting section 3, and one end of the steering block 2 facing away from the transmission sleeve 6 is provided with a threaded column, and the threaded column is used to connect with the drill bit 1;

[0038] The two side surfaces of the steering block 2 are arranged as planes so that the steering block 2 can rotate forward and backward in two directions.

[0039] In this embodiment, the two side surfaces of the sphere are set as planes, and the two planes are in contact with the transmission sleeve 6, so that the steering block 2 swings only in one plane, thereby adjusting the deflection angle of the drill bit 1.

[0040] In this embodiment, a threaded column can be used to achieve a detachable connection between the drill bit 1 and the steering block 2 .

[0041] As an optional embodiment of the present invention, the steering block 2 is provided with two through openings, and the two through openings communicate with the inside and the outside of the transmission sleeve 6 .

[0042] In this embodiment, a through hole is provided to allow the cooling water in the transmission sleeve 6 to be discharged and supplied to the drill bit 1 for cooling.

[0043] As an optional embodiment of the present invention, the two openings are trumpet-shaped, and when the drill bit 1 has the largest deflection angle,

[0044] The narrow opening of the first opening faces the inside of the transmission sleeve 6, and the wide opening of the first opening faces the outside of the transmission sleeve 6, and the wide opening of the first opening is in a different deflection direction from that of the drill bit 1;

[0045] The wide end of the second opening faces the inside of the transmission sleeve 6 , the narrow end of the second opening faces the outside of the transmission sleeve 6 , and the narrow end of the second opening is in the same deflection direction as the drill bit 1 .

[0046] In this embodiment, the above setting makes the water volume discharged from the two ports different. Specifically, when the drill bit 1 deflects, the port facing the deflection direction of the drill bit 1 has a large inlet and a small outlet, thereby increasing the pressure of the sprayed water and acting more strongly on the medium; in contrast, the other port has a small inlet and a large outlet, and the pressure of the sprayed water is reduced. At this time, the port is closer to the axis of the transmission sleeve 6, where there is no medium and high water pressure is not required. This setting allows the pressure and direction of the water sprayed through the steering block 2 to match the working conditions of the corresponding area, making full use of the effect of water pressure.

[0047] As an optional embodiment of the present invention, a threaded section 8 is provided at one end of the transmission sleeve 6 for connecting with the driving device.

[0048] In this embodiment, the driving device can be detachably connected to the transmission sleeve 6 via the threaded section 8 .

[0049] As an optional embodiment of the present invention, the threaded section 8 is provided with a through hole communicating with the interior of the transmission sleeve 6 , and the through hole is used to supply water into the transmission sleeve 6 .

[0050] In this embodiment, the pipeline or the driving device can be connected to the interior of the transmission sleeve 6 through a rotating joint, so as to supply water to the interior of the transmission sleeve 6. This is an optional implementation method in the existing technology, and the present invention does not make any specific limitation on this.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling device for blasting, characterized in that: The blasting drilling device comprises a transmission sleeve and an adjusting rod; The transmission sleeve is hollow, one end of the transmission sleeve is used to connect with the driving device, and the other end is used to connect with the drill bit; The adjusting rod is arranged inside the transmission sleeve, and the adjusting rod comprises an adjusting section, a first connecting section, a guiding section and a second connecting section; the adjusting section passes through an adjusting assembly, and the adjusting assembly is used to adjust the axial position of the adjusting section relative to the transmission sleeve; the first connecting section is used to connect the adjusting section and the guiding section; the guiding section passes through a guiding block arranged inside the transmission sleeve; the second connecting section is used to connect the guiding section and the steering block; the steering block is movably connected to the end of the transmission sleeve, and the drill bit is detachably connected to the steering block; Each connection position of the adjustment rod is connected by a universal joint; The adjustment assembly includes an adjustment ring; An annular groove is provided on the inner wall of the transmission sleeve at a position corresponding to the adjustment section, the adjustment ring is embedded in the annular groove, and a sealing ring is provided on the side wall of the annular groove facing the adjustment ring; An adjusting window is provided on the transmission sleeve at a position directly opposite to the adjusting ring, and an adjusting tooth is provided on a side of the adjusting ring facing the adjusting window, and the adjusting ring is driven to rotate by the adjusting tooth; The adjusting section is sleeved with a fixing sleeve, the adjusting section and the fixing sleeve are threadedly connected, and the fixing sleeve and the adjusting ring are connected as a whole through a cantilever; the adjusting ring rotates to drive the fixing sleeve to rotate, thereby driving the adjusting section to move along the axial direction of the transmission sleeve, so that the adjusting rod is straightened or slowed down to change the direction of the steering block, thereby adjusting the direction of the drill bit; The guide block is fixedly arranged at the middle of the transmission sleeve, a guide hole is opened on the guide block, and the guide section passes through the guide hole; The opening of the guide hole is set in a water drop shape, the maximum curvature radius of the water drop-shaped opening is located at the center of the guide block, and the center of the guide block is concentric with the axis of the transmission sleeve; The guide section is sleeved with two baffles, which are respectively located on both sides of the guide block. A spring is sleeved on the part of the guide section located on the guide block, and the spring is used to make the two baffles close to the wall surface of the guide block. The diameter of the baffle is greater than the maximum curvature radius of the guide hole.

2. The blasting drilling device according to claim 1, characterized in that: The steering block is configured to be spherical, one end of the steering block facing the transmission sleeve is fixedly connected to the second connecting section, and one end of the steering block facing away from the transmission sleeve is provided with a threaded column, and the threaded column is used to connect with the drill bit; The two side surfaces of the steering block are arranged as planes so that the steering block can rotate forward and backward in two directions.

3. The blasting drilling device according to claim 2, characterized in that: The steering block is provided with two through openings, and the two through openings communicate with the inside and the outside of the transmission sleeve.

4. The blasting drilling device according to claim 3, characterized in that: The two openings are trumpet-shaped, and when the drill bit angle is the largest, The narrow opening of the first opening faces the inside of the transmission sleeve, the wide opening of the first opening faces the outside of the transmission sleeve, and the wide opening of the first opening is in a different deflection direction from that of the drill bit; The wide opening of the second opening faces the inside of the transmission sleeve, the narrow opening of the second opening faces the outside of the transmission sleeve, and the narrow opening of the second opening is in the same deflection direction as the drill bit.

5. The blasting drilling device according to claim 1, characterized in that: The transmission sleeve is provided with a threaded section at one end thereof for connecting with the driving device.

6. The blasting drilling device according to claim 5, characterized in that: The threaded section is provided with a through hole communicated with the interior of the transmission sleeve, and the through hole is used to supply water into the transmission sleeve.

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