Blast hole grooving device

Abstract

The utility model relates to the technical field of grooving devices, in particular to a blasthole grooving device. When the blasthole grooving device is used and a connecting rod moves downwards, an electric rotating shaft rotates, so that a grooving cutter rotates to a horizontal position, one end of the grooving cutter extends out of the side face of a cutter support, then the grooving cutter conducts grooving on a blasthole, and when the cutter retracts, the electric rotating shaft is adjusted, and the grooving cutter rotates to the horizontal position; the grooving cutter is accommodated in the mounting cavity, so that the cutter is prevented from being stuck; furthermore, after the grooving cutter is used for a long time and is abraded, a hydraulic telescopic rod is started to drive a wedge-shaped block to lift, and a sliding block moves towards the two sides along a sliding cavity, so that the extending part of the grooving cutter is more, and grooving is better achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a slotting device technical field, specifically is a blasthole slotting device. BACKGROUND

[0002] In the blasting engineering, often need to control the situation of the blasting interface, namely one side of the rock is cleaned up after the blasthole blasting, the rock of the other side is permanently reserved. The current commonly used blasting technology is smooth blasting and pre-splitting blasting. In order to make the final interface fall on the blasthole's simmedian line, the blasthole spacing needs to be reduced, which increases the drilling workload.

[0003] The fracture mechanics of brittle material shows that cutting a V-shaped groove with the blasthole on the sidewall of the blasthole can reduce the energy required for rock fracture and can control the fracture surface to fall on the simmedian line of the blasthole, so that the desired effect can be achieved without reducing or reducing the blasthole spacing. In view of this, a blasthole slotting device is designed. SUMMARY

[0004] The utility model discloses a blasthole slotting device, to solve the problem raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a blasthole slotting device, including connecting rod, cutter support and slotting cutter, the connecting rod bottom end is connected with cutter support, the cutter support inside is seted up with installation cavity, the both sides of installation cavity inner chamber wall are seted up with sliding cavity, and the sliding block is installed between two sliding cavities, the surface of sliding block is installed with slotting cutter, the inner chamber bottom of installation cavity is installed with hydraulic telescopic rod, and the top of hydraulic telescopic rod is installed with wedge.

[0006] Preferably, the bottom end of the connecting rod is connected with a fixing head, the top of the cutter support is provided with a fixing groove, the fixing head and the fixing groove are embeddedly connected, and are fixed through bolts.

[0007] Preferably, the sliding cavity is horizontally arranged, and the sliding block is embeddedly and slidably connected with the sliding cavity.

[0008] Preferably, the slotting cutter is connected with the sliding block through an electric rotating shaft, and the slotting cutter is located in the installation cavity.

[0009] Preferably, the top of the slotting cutter is provided with two inclined surfaces.

[0010] Preferably, the top of the wedge is provided with two inclined surfaces, and the top of the wedge is attached to the surface of the sliding block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: When the connecting rod moves downward, the electric shaft rotates, causing the grooving knife to rotate to a horizontal position. One end of the grooving knife extends out of the side of the tool holder, and then the grooving knife cuts the blast hole. When retracting the knife, the electric shaft is adjusted to retract the grooving knife into the installation cavity to prevent jamming. Furthermore, after the grooving knife has been used for a long time and wears out, the hydraulic telescopic rod is activated to lift the wedge block, causing the sliding block to move to both sides along the sliding cavity, thereby allowing more of the grooving knife to extend out for better grooving. Attached Figure Description

[0012] Fig. 1 This is a schematic diagram of the normal working structure of this utility model;

[0013] Fig. 2 This is a schematic diagram of the grooving cutter retraction structure of this utility model when it is withdrawn;

[0014] Fig. 3 This is a schematic diagram of the compensation structure for wear of the grooving tool according to this utility model.

[0015] In the diagram: 1. Connecting rod; 2. Tool holder; 3. Grooving tool; 4. Mounting cavity; 5. Sliding cavity; 6. Sliding block; 7. Electric rotating shaft; 8. Hydraulic telescopic rod; 9. Wedge block; 10. Fixing head; 11. Fixing groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] Please see Figs. 1-3 This utility model provides a technical solution: a blast hole grooving device, including a connecting rod 1, a tool holder 2 and a grooving knife 3. The bottom end of the connecting rod 1 is connected to the tool holder 2. The tool holder 2 has an installation cavity 4 inside. The inner walls of the two sides of the installation cavity 4 have sliding cavities 5. A sliding block 6 is installed between the two sliding cavities 5. The grooving knife 3 is installed on the surface of the sliding block 6. A hydraulic telescopic rod 8 is installed at the bottom of the inner cavity of the installation cavity 4. A wedge block 9 is installed at the top of the hydraulic telescopic rod 8.

[0020] Furthermore, the bottom end of the connecting rod 1 is connected to a fixing head 10, and the top of the tool holder 2 is provided with a fixing groove 11. The fixing head 10 and the fixing groove 11 are fitted together and fixed by bolts.

[0021] Furthermore, the sliding cavity 5 is horizontally positioned, and the sliding block 6 is engaged and slidably connected with the sliding cavity 5.

[0022] Furthermore, the grooving cutter 3 is connected to the sliding block 6 via an electric rotating shaft 7, and the grooving cutter 3 is located inside the mounting cavity 4.

[0023] Furthermore, the top two sides of the grooving cutter 3 are inclined.

[0024] Furthermore, the top two sides of the wedge block 9 are inclined surfaces, and the top two sides of the wedge block 9 are in contact with the surface of the sliding block 6.

[0025] Working principle: When the connecting rod 1 moves downward, the electric rotating shaft 7 rotates, causing the grooving knife 3 to rotate to a horizontal position. One end of the grooving knife 3 extends out of the side of the tool holder 2, and then the grooving knife 3 cuts the blast hole. When retracting the knife, the electric rotating shaft 7 is adjusted so that the grooving knife 3 is stored inside the mounting cavity 4 to prevent jamming. Furthermore, after the grooving knife 3 has been used for a long time and wear occurs, the hydraulic telescopic rod 8 is activated, which drives the wedge block 9 to lift, causing the sliding block 6 to move to both sides along the sliding cavity 5, so that the grooving knife 3 extends out more to better achieve grooving.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A borehole grooving device, comprising a connecting rod (1), a tool holder (2), and a grooving blade (3), characterized in that: The bottom end of the connecting rod (1) is connected to a tool holder (2). The tool holder (2) has an installation cavity (4) inside. The inner walls of the two sides of the installation cavity (4) have sliding cavities (5). A sliding block (6) is installed between the two sliding cavities (5). A grooving tool (3) is installed on the surface of the sliding block (6). A hydraulic telescopic rod (8) is installed at the bottom of the inner cavity of the installation cavity (4). A wedge block (9) is installed at the top of the hydraulic telescopic rod (8).

2. The borehole grooving device according to claim 1, characterized in that: The bottom end of the connecting rod (1) is connected to a fixing head (10), and the top of the tool holder (2) is provided with a fixing groove (11). The fixing head (10) and the fixing groove (11) are fitted together and fixed by bolts.

3. The borehole grooving device according to claim 1, characterized in that: The sliding cavity (5) is horizontally arranged, and the sliding block (6) is engaged and slidably connected with the sliding cavity (5).

4. The borehole grooving device according to claim 1, characterized in that: The grooving cutter (3) is connected to the sliding block (6) via an electric rotating shaft (7), and the grooving cutter (3) is located inside the mounting cavity (4).

5. The borehole grooving device according to claim 1, characterized in that: The top two sides of the grooving knife (3) are inclined.

6. The borehole grooving device according to claim 1, characterized in that: The wedge block (9) has inclined surfaces on both sides of its top, and the top two sides of the wedge block (9) are in contact with the surface of the sliding block (6).

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