Heavy-duty double-drill-boom structure with large bearing capacity

Abstract

The utility model discloses a heavy-duty double-drill-boom structure with large bearing capacity, which comprises a heavy-duty double drill boom, the heavy-duty double drill boom comprises pairs of square pipe girders which are arranged side by side, a cross beam is fixedly arranged between the pairs of square pipe girders, and one end of each pair of square pipe girders is welded with an upper connecting shaft hole sleeve. Vehicle body connecting shaft holes are formed in the other ends of the square tube girders, support arm oil cylinder shaft holes are integrally formed in one sides of the square tube girders, and pitching oil cylinder shaft holes are integrally formed in the other sides of the square tube girders. A traditional single-square-tube girder structure is changed, the double-square-tube girders are connected in parallel, and the square-tube girders are connected through the cross beams, so that the bearing capacity of the drill boom is greatly improved, the structure is safe and reliable, and the heavy-load requirement of a down-the-hole drill for large hole diameter and large hole depth is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of down-the-hole drilling machines, and in particular relates to a heavy-duty double-drill arm structure with large bearing capacity. Background Art

[0002] Down-the-hole drilling rigs use impactors and drill bits that are submerged in the bottom of the hole to impact and crush rocks. The impactor is sent to the bottom of the hole through the drill rod, torque and shaft pressure are transmitted, and compressed air and water are delivered to the impactor through the center hole of the drill rod. Therefore, energy loss does not increase with the extension of the borehole. It is suitable for drilling large-diameter and deep blastholes and is widely used in mining, hydropower, transportation, building materials, national defense engineering, earthwork and other projects. With the rapid development of the economy, the demand for mining energy resources such as ore and coal is growing. Large-scale mines and stone factories have increasingly larger requirements for the diameter and depth of blast holes, which puts forward higher requirements for the structural parts of down-the-hole drilling rigs.

[0003] The drill arm is of utmost importance as a bridge connecting the vehicle body and the rock drilling device. The traditional single-tube beam structure can no longer meet the requirements of large bearing capacity, and it is difficult to meet the heavy load requirements of large-diameter and deep-hole down-the-hole drilling rigs. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a heavy-duty double drill arm structure with large bearing capacity to solve the technical defects mentioned in the background technology.

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

[0006] A heavy-duty double drill arm structure with large bearing capacity comprises a heavy-duty double drill arm for a down-the-hole drill rig, wherein the heavy-duty double drill arm comprises a pair of square tube beams arranged side by side, a cross beam is fixedly installed between the pair of square tube beams, an upper connecting shaft hole sleeve is welded to one end of the pair of square tube beams, and a vehicle body connecting shaft hole is opened at the other end of the pair of square tube beams, a support arm cylinder shaft hole is integrally formed on one side of the pair of square tube beams, and a pitch cylinder shaft hole is integrally formed on the other side of the pair of square tube beams.

[0007] As a preferred solution of the utility model, steel reinforcing plates are provided on the side walls of the paired square tube girders that are away from each other.

[0008] As a preferred solution of the utility model, the steel reinforcing plate is provided with a plurality of through holes.

[0009] As a preferred solution of the utility model, a plurality of reinforcing rib plates are welded between the upper connecting shaft hole sleeve and the paired square tube beam.

[0010] As a preferred solution of the utility model, a first wear-resistant steel sleeve is rotatably installed inside the upper connecting shaft hole sleeve.

[0011] As a preferred solution of the utility model, a plurality of first grease nipples are embedded on the upper connecting shaft hole sleeve, and the plurality of first grease nipples are all connected to the gap between the outer wall of the first wear-resistant steel sleeve and the inner wall of the upper connecting shaft hole sleeve.

[0012] As a preferred solution of the utility model, the interior of the first wear-resistant steel sleeve is threadedly connected with the upper connecting member main shaft.

[0013] As a preferred solution of the utility model, pitch cylinder connecting seats are fixedly installed at both ends of the upper connecting member main shaft, a connecting shaft is rotatably installed on the pitch cylinder connecting seat, the pitch cylinder connecting main shaft is rotatably installed in the pitch cylinder shaft hole, and a pitch cylinder is fixedly installed between the pitch cylinder connecting main shaft and the connecting shaft.

[0014] As a preferred solution of the utility model, a second wear-resistant steel sleeve is rotatably installed inside the vehicle body connecting shaft hole, and the interior of the second wear-resistant steel sleeve is threaded with a vehicle body connecting main shaft, and a plurality of second grease nipples are embedded on the end of the square tube beam away from the upper connecting shaft hole sleeve, and the plurality of second grease nipples are connected to the gap between the outer wall of the second wear-resistant steel sleeve and the inner wall of the vehicle body connecting shaft hole.

[0015] As a preferred solution of the utility model, a supporting arm oil cylinder connecting main shaft is rotatably installed in the supporting arm oil cylinder shaft hole, and the supporting arm oil cylinder connecting main shaft is fixedly connected to the piston rod of the supporting arm oil cylinder.

[0016] Compared with the prior art, the heavy-duty double drill arm structure with large bearing capacity provided by the utility model has the following beneficial effects:

[0017] The heavy-duty double drill arm structure with large load-bearing capacity is mainly composed of two square tube beams arranged side by side and a crossbeam fixedly installed between the two square tube beams. The square tube beam is provided with an upper connecting shaft hole sleeve, a vehicle body connecting shaft hole, a support arm cylinder shaft hole and a pitch cylinder shaft hole, which can meet the installation and use requirements. By changing the traditional single square tube beam structure, a double-sided tube beam is connected in parallel, and a crossbeam is used to connect the square tube beams, the bearing capacity of the drill arm is greatly improved. The structure is safe and reliable, and can meet the heavy load requirements of large-diameter and large-depth down-the-hole drilling rigs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment will be briefly introduced below. Obviously, the drawings described below are only examples of the embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The structure of the embodiment of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The structure of the embodiment of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 It is a schematic diagram of the structure after the pitch cylinder, the arm cylinder and the pitch cylinder connecting seat are additionally installed in the embodiment of the utility model.

[0022] Reference numerals:

[0023] 1. Square tube beam; 2. Crossbeam; 3. Pitch cylinder shaft hole; 4. Car body connecting shaft hole; 5. Second wear-resistant steel sleeve; 6. Second grease nipple; 7. Support arm cylinder shaft hole; 8. Upper connecting shaft hole sleeve; 9. First wear-resistant steel sleeve; 10. Steel reinforcement plate; 11. Reinforcement rib plate; 12. First grease nipple; 13. Upper connecting part main shaft; 14. Car body connecting main shaft; 15. Support arm cylinder connecting main shaft; 16. Connecting shaft; 17. Pitch cylinder connecting seat; 18. Pitch cylinder; 19. Support arm cylinder; 20. Pitch cylinder connecting main shaft. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model more clear, the embodiment of the utility model is further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments of the present invention.

[0026] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0027] See attached Figure 1-3As shown, an embodiment of the utility model is a heavy-duty double drill arm structure with large load-bearing capacity, including a heavy-duty double drill arm for a down-the-hole drill rig, the heavy-duty double drill arm including two square tube beams 1 arranged side by side, a cross beam 2 fixedly installed between the two square tube beams 1, an upper connecting shaft hole sleeve 8 welded to one end of the two square tube beams 1, and a vehicle body connecting shaft hole 4 is opened at the other end of the two square tube beams 1, a support arm cylinder shaft hole 7 is integrally formed on one side of the two square tube beams 1, and a pitch cylinder shaft hole 3 is integrally formed on the other side of the two square tube beams 1.

[0028] The heavy-duty double drill arm structure with large bearing capacity of the above scheme is mainly composed of two square tube beams 1 arranged side by side and a cross beam 2 fixedly installed between the two square tube beams 1, and the square tube beam 1 is provided with an upper connecting shaft hole sleeve 8, a vehicle body connecting shaft hole 4, an arm cylinder shaft hole 7 and a pitch cylinder shaft hole 3, which can meet the installation and use requirements. What is more important is that by changing the traditional single square tube beam structure, the double square tube beams 1 are connected in parallel, and the cross beam 2 is used to connect the square tube beams 1, the bearing capacity of the drill arm is greatly improved, the structure is safe and reliable, and can meet the heavy load requirements of large-diameter and large-depth down-the-hole drilling rigs.

[0029] In order to further improve the bearing capacity of the two square tube beams 1 , a steel reinforcement plate 10 is provided on one side wall of the two square tube beams 1 that is away from each other.

[0030] In order to facilitate observation of whether the two square tube beams 1 show signs of tearing, a plurality of through holes are provided on the steel reinforcing plate 10 , through which it is possible to conveniently observe whether the surfaces of the two square tube beams 1 show signs of tearing.

[0031] In order to improve the connection strength between the upper connecting shaft hole sleeve 8 and the two square tube beams 1 , a plurality of reinforcing rib plates 11 are welded between the upper connecting shaft hole sleeve 8 and the two square tube beams 1 .

[0032] In order to improve the service life of the upper connecting shaft hole sleeve 8, a first wear-resistant steel sleeve 9 is rotatably installed inside the upper connecting shaft hole sleeve 8. In order to facilitate the lubrication of the first wear-resistant steel sleeve 9, a plurality of first grease nipples 12 are embedded on the upper connecting shaft hole sleeve 8, and the plurality of first grease nipples 12 are all connected to the gap between the outer wall of the first wear-resistant steel sleeve 9 and the inner wall of the upper connecting shaft hole sleeve 8, so as to add grease to the gap between the outer wall of the first wear-resistant steel sleeve 9 and the inner wall of the upper connecting shaft hole sleeve 8 through the first grease nipples 12, so as to lubricate the first wear-resistant steel sleeve 9.

[0033] In order to facilitate the installation of the pitch cylinder 18, the upper connecting part main shaft 13 is screwed inside the first wear-resistant steel sleeve 9, and the pitch cylinder connecting seats 17 are fixedly installed at both ends of the upper connecting part main shaft 13. The connecting shaft 16 is rotatably installed on the pitch cylinder connecting seat 17. The pitch cylinder connecting main shaft 20 is rotatably installed in the pitch cylinder shaft hole 3, and the pitch cylinder 18 is fixedly installed between the pitch cylinder connecting main shaft 20 and the connecting shaft 16.

[0034] In order to improve the service life of the car body connecting shaft hole 4, a second wear-resistant steel sleeve 5 is rotatably installed inside the car body connecting shaft hole 4. In order to facilitate the connection of the down-the-hole drilling rig body, a car body connecting main shaft 14 is screwed inside the second wear-resistant steel sleeve 5. In order to facilitate the lubrication of the second wear-resistant steel sleeve 5, a plurality of second grease nipples 6 are embedded on the end of the square tube beam 1 away from the upper connecting shaft hole sleeve 8, and the plurality of second grease nipples 6 are connected to the gap between the outer wall of the second wear-resistant steel sleeve 5 and the inner wall of the car body connecting shaft hole 4.

[0035] In order to facilitate the connection of the arm cylinder 19 , the arm cylinder connecting main shaft 15 is rotatably installed in the arm cylinder shaft hole 7 , and the arm cylinder connecting main shaft 15 is fixedly connected to the piston rod of the arm cylinder 19 .

[0036] In summary, the embodiment of the utility model changes the traditional single square tube beam structure to a double square tube beam 1 in parallel, and uses a cross beam 2 to connect the square tube beam 1, which greatly improves the bearing capacity of the drill arm. The structure is safe and reliable and can meet the heavy load requirements of large-diameter and large-depth down-the-hole drilling rigs.

[0037] The above shows and describes the basic principles of the present invention. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only intended to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A heavy-duty double-drilling arm structure with large bearing capacity, characterized in that: The invention comprises a heavy-duty double drill arm for a down-the-hole drill, wherein the heavy-duty double drill arm comprises a pair of square tube beams (1) arranged side by side, a cross beam (2) is fixedly installed between the pair of square tube beams (1), an upper connecting shaft hole sleeve (8) is welded to one end of the pair of square tube beams (1), and a vehicle body connecting shaft hole (4) is opened at the other end of the pair of square tube beams (1), a support arm oil cylinder shaft hole (7) is integrally formed on one side of the pair of square tube beams (1), and a pitching oil cylinder shaft hole (3) is integrally formed on the other side of the pair of square tube beams (1).

2. A heavy-duty double-drilling arm structure with large bearing capacity according to claim 1, characterized in that: A steel reinforcing plate (10) is provided on one side wall of the square tube beam (1) which is away from each other.

3. A heavy-duty double drill arm structure with large bearing capacity according to claim 2, characterized in that: The steel reinforcing plate (10) is provided with a plurality of through holes.

4. A heavy-duty double-drilling arm structure with large bearing capacity according to claim 2, characterized in that: A plurality of reinforcing rib plates (11) are welded between the upper connecting shaft hole sleeve (8) and the corresponding square tube beam (1).

5. A heavy-duty double-drilling arm structure with large bearing capacity according to claim 4, characterized in that: A first wear-resistant steel sleeve (9) is rotatably mounted inside the upper connecting shaft hole sleeve (8).

6. A heavy-duty double-drilling arm structure with large bearing capacity according to claim 5, characterized in that: A plurality of first grease nipples (12) are embedded in the upper connecting shaft hole sleeve (8), and the plurality of first grease nipples (12) are connected to the gap between the outer wall of the first wear-resistant steel sleeve (9) and the inner wall of the upper connecting shaft hole sleeve (8).

7. A heavy-duty double-drilling arm structure with large bearing capacity according to claim 6, characterized in that: An upper connecting member main shaft (13) is threadedly connected inside the first wear-resistant steel sleeve (9).

8. A heavy-duty double-drilling arm structure with large bearing capacity according to claim 7, characterized in that: A pitch cylinder connecting seat (17) is fixedly mounted on both ends of the upper connecting member main shaft (13); a connecting shaft (16) is rotatably mounted on the pitch cylinder connecting seat (17); a pitch cylinder connecting main shaft (20) is rotatably mounted in the pitch cylinder shaft hole (3); and a pitch cylinder (18) is fixedly mounted between the pitch cylinder connecting main shaft (20) and the connecting shaft (16).

9. The heavy-duty double-drilling arm structure with large load-bearing capacity according to claim 6, characterized in that: A second wear-resistant steel sleeve (5) is rotatably mounted inside the vehicle body connecting shaft hole (4), and a vehicle body connecting main shaft (14) is screwed inside the second wear-resistant steel sleeve (5). A plurality of second grease nipples (6) are embedded at one end of the square tube beam (1) away from the upper connecting shaft hole sleeve (8), and the plurality of second grease nipples (6) are all connected to the gap between the outer wall of the second wear-resistant steel sleeve (5) and the inner wall of the vehicle body connecting shaft hole (4).

10. A heavy-duty double-drilling arm structure with large bearing capacity according to claim 9, characterized in that: An arm cylinder connecting main shaft (15) is rotatably mounted in the arm cylinder shaft hole (7), and the arm cylinder connecting main shaft (15) is fixedly connected to the piston rod of the arm cylinder (19).

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