Down-the-hole hammer device for hard rock stratum drilling

Abstract

The utility model discloses a down-the-hole hammer device for hard rock stratum drilling, which comprises a base, the upper surface of the base is fixedly connected with a protective seat, the upper surface of the protective seat is hinged with a round flashboard through a hinge, the upper surface of the round flashboard and the upper surface of the protective seat are fixedly connected with fixing blocks, and the fixing blocks are fixedly connected with the protective seat. Threaded holes are formed in the side faces, close to each other, of the two fixing blocks, and the interiors of the two threaded holes are jointly in threaded connection with a full-pressure bolt. According to the device, through mutual cooperation of a mounting plate, a pressure relief hole, a compression spring, a damper and a plate, air pressure in the device can be shunted, damage caused by air pressure impact to the device is reduced, and therefore the problem that parts on the device are damaged is solved; and when the device is used on the uneven ground, the device can be adjusted, so that the gushing prevention device is kept at a horizontal position.

Description

Technical Field

[0001] The utility model relates to the technical field of down-the-hole hammers, in particular to a down-the-hole hammer device used for drilling hard rock formations. Background Art

[0002] The down-the-hole hammer is connected to the lower end of the drill pipe. The drilling rig drives the drill pipe to rotate, and compressed air (referred to as compressed air) enters the down-the-hole hammer through the drill pipe to generate an impact force of a certain frequency to break the rock. At present, the hole-making technology of down-the-hole hammer and pipe drilling has been widely used in bored pile projects, and large-diameter down-the-hole hammer and pipe drilling technology is also widely used. For example, the large-diameter down-the-hole hammer full-casing pipe and pipe drilling hole-making technology has been used in many bored pile projects.

[0003] During the normal drilling process of a down-the-hole hammer using high-pressure gas, the high-pressure gas and rock cuttings in the hole are blocked by protective plates, gate plates, and clamping plates when they are ejected, which increases the pressure inside the down-the-hole hammer. As a result, when the high-pressure gas rushes up, personnel avoid the high-pressure gas, which cannot solve the blowout prevention damage from the root. For this reason, we propose a down-the-hole hammer device for drilling in hard rock formations to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a down-the-hole hammer device for drilling hard rock formations to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The cam is connected with the upper and lower surfaces of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface of the bottom surface

[0007] In a further embodiment, a group of guide plates arranged in an annular shape are fixedly connected to the inner wall of the base, and each of the guide plates is arc-shaped.

[0008] In a further embodiment, a group of flow diversion holes arranged in an annular pattern are formed on the bottom surface of the pressure relief plate, and a flow diversion groove is formed on the inner wall of each flow diversion hole.

[0009] In a further embodiment, the bottom surface of each support seat is fixedly connected to an anti-slip plate, and the bottom surface of each anti-slip plate is provided with anti-slip grooves.

[0010] In a further embodiment, two pipes are fixedly embedded in the inner wall of the base, and a valve is fixedly connected to the interior of each of the pipes.

[0011] In a further embodiment, a reinforcement plate is fixedly connected to the upper surface of the base, and an inner wall of the reinforcement plate is fixedly connected to the outer surface of the protective seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device can divert the air pressure inside the device through the cooperation of the mounting plate, the pressure relief hole, the compression spring, the damper and the plate, thereby reducing the damage to the device caused by the air pressure shock, thereby solving the problem of damage to the parts on the device. Through the cooperation of the hydraulic rod and the support seat, the device can be adjusted when used on an uneven ground, so that the gushing device can be kept in a horizontal position, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a down-the-hole hammer device used for drilling hard rock formations;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of a bottom view of a down-the-hole hammer device for drilling hard rock formations;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of a front cross-section of a down-the-hole hammer device for drilling hard rock formations;

[0017] Figure 4 A down-the-hole hammer device for drilling in hard rock formations Figure 3 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1. base; 2. protective seat; 3. reinforcement plate; 4. circular gate; 5. pipeline; 6. valve; 7. hydraulic rod; 8. support seat; 9. anti-skid plate; 10. drilling hole; 11. guide plate; 12. mounting plate; 13. pressure relief hole; 14. diversion hole; 15. damper; 16. pressure relief plate; 17. compression spring; 18. fixing block; 19. threaded hole; 20. nut; 21. full pressure bolt. DETAILED DESCRIPTION

[0019] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] 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.

[0022] See also Figure 1-4In the utility model, a down-the-hole hammer device for drilling hard rock formations includes a base 1, a protective seat 2 is fixedly connected to the upper surface of the base 1, a circular gate plate 4 is hinged to the upper surface of the protective seat 2 through a hinge, a fixing block 18 is fixedly connected to the upper surface of the circular gate plate 4 and the upper surface of the protective seat 2, a threaded hole 19 is provided on the side of the two fixing blocks 18 close to each other, a full-pressure bolt 21 is threadedly connected to the inside of the two threaded holes 19, a nut 20 is threadedly connected to the outer surface of the full-pressure bolt 21, and a drilling hole 10 is provided on the bottom surface of the base 1 and the bottom surface of the protective seat 2, which constitutes the sealing mechanism of the device, and can seal gas and gravel to avoid injury. The inner wall of the protective seat 2 is fixedly connected with a mounting plate 12, the upper surface of the mounting plate 12 is provided with a pressure relief hole 13, the bottom surface of the mounting plate 12 is fixedly connected with a compression spring 17, the bottom surface of the mounting plate 12 is fixedly connected with two dampers 15, the bottom ends of the two dampers 15 and the bottom ends of the compression springs 17 are jointly fixedly connected with a pressure relief plate 16, which can constitute a buffer mechanism of the device, thereby reducing damage to the parts of the device caused by gas and gravel, and extending the service life of the device. A group of hydraulic rods 7 are fixedly connected to the bottom surface of the base 1, and the output end of each hydraulic rod 7 is fixedly connected to a support seat 8, which can adjust the position of the device so that the device can be kept in a horizontal position for operation.

[0023] A group of annularly arranged guide plates 11 are fixedly connected to the inner wall of the base 1. Each guide plate 11 is arc-shaped and can guide the gas, thereby reducing the impact force of the gas. A group of annularly arranged diversion holes 14 are provided on the bottom surface of the pressure relief plate 16. The inner wall of each diversion hole 14 is provided with a diversion groove, which can separate the gas, thereby reducing the gas pressure. The bottom surface of each support seat 8 is fixedly connected to an anti-skid plate 9. The bottom surface of each anti-skid plate 9 is provided with anti-slip grooves, which enhance the stability of the device when working on the ground, ensure the normal use of the device, and improve the working efficiency of the device.

[0024] Two pipes 5 are fixedly embedded on the inner wall of the base 1, and each pipe 5 is fixedly connected to a valve 6 inside, so that the high-pressure gas, rock cuttings and mud in the device can be discharged. A reinforcement plate 3 is fixedly connected to the upper surface of the base 1, and the inner wall of the reinforcement plate 3 is fixedly connected to the outer surface of the protective seat 2, thereby strengthening the firmness between the base 1 and the protective seat 2 and extending the service life of the device.

[0025] The working principle of the utility model is:

[0026] When the device is in use, during the normal process of the down-the-hole hammer using high-pressure gas, the high-pressure gas and rock cuttings in the hole are sealed inside the borehole 10 by the base 1, the protective seat 2 and the circular gate plate 4 when they are ejected, thereby increasing the pressure inside the device. The compression spring 17, the damper 15 and the pressure relief plate 16 can reduce the damage caused by the gas to the parts of the device, and the high-pressure gas, rock cuttings and mud inside the device can be discharged through the pipeline 5 and the valve 6, and then the excess gas reduces the air pressure through the diversion hole 14, thereby reducing the pressure inside the device. When used on uneven ground, the controller is used to control the hydraulic rod 7 to work, so that the hydraulic rod 7 drives the support seat 8 to adjust, so that the device can be kept in a horizontal position for use.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A down-the-hole hammer device for drilling hard rock formations, characterized in that: The invention comprises a base (1), the upper surface of the base (1) is fixedly connected to a protective seat (2), the upper surface of the protective seat (2) is hingedly connected to a circular gate plate (4) through a hinge, the upper surface of the circular gate plate (4) and the upper surface of the protective seat (2) are both fixedly connected to a fixing block (18), the side surfaces of the two fixing blocks (18) close to each other are each provided with a threaded hole (19), the interiors of the two threaded holes (19) are commonly threadedly connected to a full pressure bolt (21), the outer surface of the full pressure bolt (21) is threadedly connected to a nut (20), the bottom surface of the base (1) and the bottom surface of the protective seat (2) are A drilling hole (10) is provided on each of the protective seat (2); a mounting plate (12) is fixedly connected to the inner wall of the protective seat (2); a pressure relief hole (13) is provided on the upper surface of the mounting plate (12); a compression spring (17) is fixedly connected to the bottom surface of the mounting plate (12); two dampers (15) are fixedly connected to the bottom surface of the mounting plate (12); the bottom ends of the two dampers (15) and the bottom ends of the compression springs (17) are fixedly connected to a pressure relief plate (16); a group of hydraulic rods (7) are fixedly connected to the bottom surface of the base (1); and the output end of each hydraulic rod (7) is fixedly connected to a support seat (8).

2. A down-the-hole hammer device for drilling hard rock formations according to claim 1, characterized in that: A group of guide plates (11) arranged in an annular pattern are fixedly connected to the inner wall of the base (1), and each of the guide plates (11) is arc-shaped.

3. A down-the-hole hammer device for drilling hard rock formations according to claim 1, characterized in that: A group of flow diversion holes (14) arranged in an annular pattern are provided on the bottom surface of the pressure relief plate (16), and a flow diversion groove is provided on the inner wall of each flow diversion hole (14).

4. A down-the-hole hammer device for drilling hard rock formations according to claim 1, characterized in that: The bottom surface of each support seat (8) is fixedly connected to an anti-skid plate (9), and the bottom surface of each anti-skid plate (9) is provided with anti-skid patterns.

5. A down-the-hole hammer device for drilling hard rock formations according to claim 1, characterized in that: Two pipes (5) are fixedly embedded on the inner wall of the base (1), and a valve (6) is fixedly connected to the interior of each pipe (5).

6. A down-the-hole hammer device for drilling hard rock formations according to claim 1, characterized in that: A reinforcing plate (3) is fixedly connected to the upper surface of the base (1), and the inner wall of the reinforcing plate (3) is fixedly connected to the outer surface of the protective seat (2).

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