Novel double-arm down-the-hole drill

Abstract

The utility model discloses a novel double-arm down-the-hole drill, which belongs to the field of down-the-hole drills, a foundation structure comprises a crawler chassis, a base, a slewing bearing, a power system and a lifting upright post frame, one end of the lifting upright post frame is fixedly connected with a first slewing drive, and the other surface of the first slewing drive is fixedly connected with a slewing arm; according to the double-arm drilling machine, the drilling machine structure is improved, the double-arm rotating cylinder is additionally arranged on one side of the rotating arm and one side of the second rotating drive, the third rotating drive is installed at the end of the double-arm rotating cylinder, and meanwhile the first drilling machine and the second drilling machine are installed on the double-arm rotating cylinder and the third rotating drive respectively, so that the double-arm drilling machine structure is formed. The two drilling machines are the same in structure and can work independently, so that the working efficiency is greatly improved; and the second rotary drive is used for driving the double-arm rotating cylinder to rotate, and the third rotary drive is used for rotation adjustment, so that the positions of the first drilling machine and the second drilling machine can be independently adjusted, the operation range can be conveniently adjusted according to site conditions, and adjustment is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of down-the-hole drilling machines, in particular to a novel double-arm down-the-hole drilling machine. Background Art

[0002] A down-the-hole drill is a device specially used for drilling holes. It is the main operating equipment in tunnel construction. Through its special internal impact mechanism, it can perform efficient and accurate drilling operations on rocks. The down-the-hole drill is mainly composed of a rotary mechanism, a lifting mechanism, a pushing mechanism, a supporting mechanism and an impact mechanism. Among them, the impactor is the core component of the down-the-hole drill. It is directly connected to the drill bit and the rear end is connected to the drill rod. When working, the impactor dives into the hole, and the piston in the impactor reciprocates to hit the drill tail through the gas distribution device, thereby achieving impact crushing of the rock at the bottom of the hole. At the same time, a separate rotary mechanism drives the drill rod connected to the rear end of the impactor through an electric motor or a pneumatic rotating device outside the hole to achieve high-speed rotation of the drill bit. In the prior art, the Chinese utility model patent with publication number CN220365528U discloses an all-round tunnel drilling rig, in which guide columns, lifting frames and lifting cylinders are designed to expand the operating area of ​​the drilling rig to adapt to tunnels of different sizes. However, the patent still uses the traditional single-arm drilling rig structure. Although it can expand the operating range, its adjustment range is limited and the single-arm operating efficiency is limited. Utility Model Content

[0003] The main purpose of the utility model is to provide a novel double-arm down-the-hole drill, which can effectively solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A novel double-arm down-the-hole drill comprises a crawler chassis, a base, a slewing bearing, a power system and a lifting column frame, wherein one end of the lifting column frame is fixedly connected to a first slewing drive, the other side of the first slewing drive is fixedly connected to a slewing arm, the other end of the slewing arm is fixedly connected to a second slewing drive, the other side of the second slewing drive is fixedly connected to a double-arm rotating cylinder, a first drilling machine is fixedly installed at the end of the double-arm rotating cylinder through a first supporting tube, the end face of the double-arm rotating cylinder is fixedly connected to a third slewing drive, the other side of the third slewing drive is fixedly installed to a second drilling machine through a second supporting tube, and the first drilling machine and the second drilling machine constitute a double-arm drilling mechanism.

[0006] Preferably, the base is installed on the top of the crawler chassis, the slewing bearing and the power system are installed on the base, the lifting column frame is fixedly installed on the slewing bearing through a pair of lifting cylinders, and vertical lifting is achieved through three guide columns.

[0007] Preferably, the first drilling machine and the second drilling machine have the same structure, and are both composed of a compensating feed pipe, a compensating cylinder, a drill rig, a drilling power assembly and an impact down-the-hole assembly, wherein the compensating feed pipe is fixedly connected to the first support pipe and the second support pipe for installation, and a compensating cylinder is fixedly installed inside the compensating feed pipe, and the output ends of the compensating cylinders are respectively fixedly connected to the tail of the drill rig.

[0008] Preferably, the drilling power assembly includes a motor, a mounting base and a slider, the motor is fixedly mounted on the mounting base, the mounting base is fixedly mounted on the top of the slider, and the slider is slidably mounted on guide rails installed on both sides of the drilling rig.

[0009] Preferably, the impact down-the-hole assembly includes a connecting rod, an impactor and a down-the-hole drill bit, wherein the down-the-hole drill bit is installed at the end of the impactor, the tail end of the impactor is connected to the connecting rod, and the other end of the connecting rod is connected to the output end of the motor.

[0010] Preferably, a driving cylinder is provided inside the drill rig, the tail of the driving cylinder is fixedly connected to a first fixed pulley via a fixing member, and the fixing member is fixedly connected to the tail of the drill rig via a screw, the head output end of the driving cylinder is fixedly connected to a movable pulley group consisting of a first movable pulley and a second movable pulley via a connecting member, and a second fixed pulley is fixedly installed on the inner wall of the head of the drill rig.

[0011] Preferably, a front chain and a rear chain are further provided in the drill rig, one end of the front chain is fixedly connected to the front end of the mounting base, and the other end passes around the second fixed pulley and the second movable pulley in sequence, and is finally fixedly connected to the inner wall of the drill rig head; one end of the rear chain is fixedly connected to the rear end of the mounting base, and the other end passes around the first fixed pulley and the first movable pulley in sequence, and is finally fixedly connected to the inner wall of the middle of the drill rig.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, by improving the drilling rig structure, a double-arm rotating cylinder is added to one side of the rotating arm and the second rotating drive, and a third rotating drive is installed at the end of the double-arm rotating cylinder. At the same time, the first drilling machine and the second drilling machine are respectively installed on the double-arm rotating cylinder and the third rotating drive to form a double-arm drilling rig structure. The two drilling machines have the same structure and can operate independently, which greatly improves the working efficiency. Moreover, the second rotating drive is used to drive the double-arm rotating cylinder to rotate and the rotation of the third rotating drive is adjusted to independently adjust the positions of the first drilling machine and the second drilling machine, so that the working range can be adjusted according to the on-site conditions, and the adjustment is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the double-arm drilling rig structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the drilling mechanism of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the drilling rig of the present utility model.

[0018] In the figure: 1. crawler chassis; 2. base; 3. slewing bearing; 4. power system; 5. lifting column frame; 6. guide column; 7. lifting cylinder; 8. first slewing drive; 9. slewing arm; 10. second slewing drive; 11. double-arm rotating cylinder; 12. third slewing drive; 13. first support tube; 14. second support tube; 15. first drilling machine; 16. second drilling machine; 17. compensation feed pipe; 18. compensation cylinder; 19. drilling rack; 20. motor; 21. mounting base; 22. slider; 23. guide rail; 24. connecting rod; 25. impactor; 26. down-the-hole drill bit; 27. front chain; 28. rear chain; 29. ​​first fixed pulley; 30. second fixed pulley; 31. first movable pulley; 32. second movable pulley; 33. fixing member; 34. connecting member; 35. driving cylinder. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations 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" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] like Figure 1As shown, a new type of double-arm down-the-hole drilling rig has a basic structure including a crawler chassis 1, a base 2, a slewing bearing 3, a power system 4 and a lifting column frame 5. The base 2 is installed on the top of the crawler chassis 1, the slewing bearing 3 and the power system 4 are installed on the base 2, and the lifting column frame 5 is fixedly mounted on the slewing bearing 3 through a pair of lifting cylinders 7, and vertical lifting is achieved through three guide columns 6; a first slewing drive 8 and a slewing arm 9 are used to achieve a one-time rotation adjustment. The specific use introduction can refer to the introduction in the patent "A comprehensive tunnel drilling rig" with publication number CN220365528U, which will not be repeated here.

[0022] like Figure 1 , Figure 2 As shown, as an improvement of the utility model, a second rotary drive 10 is fixedly connected to the other end of the rotary arm 9, a double-arm rotating cylinder 11 is fixedly connected to the other side of the second rotary drive 10, a first drilling machine 15 is fixedly installed at the end of the double-arm rotating cylinder 11 through a first supporting tube 13, a third rotary drive 12 is fixedly connected to the end face of the double-arm rotating cylinder 11, a second drilling machine 16 is fixedly installed on the other side of the third rotary drive 12 through a second supporting tube 14, the first drilling machine 15 and the second drilling machine 16 constitute a double-arm drilling mechanism, the two drilling machines can work synchronously, and the working efficiency is greatly improved.

[0023] like Figure 3 As shown, in this embodiment, the first drilling machine 15 and the second drilling machine 16 have the same structure, and are both composed of a compensation feed pipe 17, a compensation cylinder 18, a drill frame 19, a drilling power assembly and an impact down-the-hole assembly, wherein the compensation feed pipe 17 is fixedly connected to the first support pipe 13 and the second support pipe 14 for installation, and a compensation cylinder 18 is fixedly installed inside the compensation feed pipe 17, and the output end of the compensation cylinder 18 is fixedly connected to the tail of the drill frame 19, respectively. By utilizing the installation connection of the compensation feed pipe 17 and the function of the compensation cylinder 18, stroke compensation can be provided for the subsequent operation of the drilling power assembly and the impact down-the-hole assembly.

[0024] In this embodiment, the drilling power assembly includes a motor 20, a mounting base 21 and a slider 22. The motor 20 is fixedly mounted on the mounting base 21, the mounting base 21 is fixedly mounted on the top of the slider 22, and the slider 22 is slidably mounted on the guide rails 23 installed on both sides of the drilling rig 19, so that the mounting base 21 can slide back and forth on the guide rails 23 with the motor 20, that is, move back and forth on the drilling rig 19.

[0025] In this embodiment, the impact down-the-hole assembly includes a connecting rod 24, an impactor 25 and a down-the-hole drill bit 26. The down-the-hole drill bit 26 is installed at the end of the impactor 25. The tail end of the impactor 25 is connected to the connecting rod 24, and the other end of the connecting rod 24 is connected to the output end of the motor 20. The motor 20 starts to drive the connecting rod 24 to rotate, and then transmits the power through the impactor 25 to drive the down-the-hole drill bit 26 to rotate, and cooperates with the action of the impactor 25 to complete the drilling effect.

[0026] like Figure 4 As shown, in this embodiment, a driving cylinder 35 is provided inside the drill frame 19, and the tail of the driving cylinder 35 is fixedly connected to a first fixed pulley 29 through a fixing member 33, and the fixing member 33 is fixedly connected to the tail of the drill frame 19 through a screw, and the head output end of the driving cylinder 35 is fixedly connected to a movable pulley group consisting of a first movable pulley 31 and a second movable pulley 32 through a connecting member 34, and a second fixed pulley 30 is fixedly installed on the inner side of the head of the drill frame 19; a front chain 27 and a rear chain 28 are also provided inside the drill frame 19, one end of the front chain 27 is fixedly connected to the front end of the mounting base 21, and the other end passes around the second fixed pulley 30 and the second movable pulley 32 in sequence, and is finally fixedly connected to the inner wall located at the head of the drill frame 19; one end of the rear chain 28 is fixedly connected to the rear end of the mounting base 21, and the other end passes around the first fixed pulley 29 and the first movable pulley 31 in sequence, and is finally fixedly connected to the inner wall located at the middle of the drill frame 19.

[0027] In actual use, the principle of using the swivel arm 9 of the basic structure part is consistent with the introduction in the same all-round tunnel drilling rig; the difference is that the second swivel drive 10 installed at one end of the swivel arm 9 can drive the double-arm rotating cylinder 11 to rotate, and the double-arm rotating cylinder 11 can synchronously drive the first drilling machine 15 to rotate and adjust the position while rotating, and the second drilling machine 16 can also be driven to rotate and adjust the position through the third swivel drive 12, and the third swivel drive 12 itself can also act to drive the second drilling machine 16 to rotate and adjust the position alone; thereby, the first drilling machine 15 and the second drilling machine 16 can both synchronously act to adjust the drilling position, and can also independently act to adjust the relative position, which greatly optimizes the adjustment of the drilling operation position.

[0028] When the first drilling machine 15 and the second drilling machine 16 are performing drilling operations, first, when the push rod at the output end of the driving cylinder 35 is extended, the connecting member 34 is driven to extend forward, and the rear chain 28 is pulled forward by the conversion of the first movable pulley 31, and one end of the rear chain 28 is fixed on the drilling frame 19, and the other end of the rear chain 28 is connected to the mounting base 21, so the mounting base 21 will be pulled backward by the rear chain 28; at the same time, the mounting base 21 will also pull the front chain 27 connected to the front end backward, and then through the conversion of the second fixed pulley 30 and the second movable pulley 32, the connecting member 34 is naturally pulled forward, which is in line with the action drive of the driving cylinder 35. On the contrary, when the push rod at the output end of the driving cylinder 35 is recovered, the mounting base 21 will be driven forward, thereby completing the adjustment of the forward and backward movement of the mounting base 21, and the forward and backward movement of the mounting base 21 naturally drives the forward and backward movement of the drilling power component and the impact down-the-hole component, thereby completing the operation adjustment of the drilling machine.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel double-arm down-the-hole drill, comprising a crawler chassis (1), a base (2), a slewing bearing (3), a power system (4) and a lifting column frame (5), characterized in that: One end of the lifting column frame (5) is fixedly connected to a first rotary drive (8), the other side of the first rotary drive (8) is fixedly connected to a rotary arm (9), the other end of the rotary arm (9) is fixedly connected to a second rotary drive (10), the other side of the second rotary drive (10) is fixedly connected to a double-arm rotating cylinder (11), the end of the double-arm rotating cylinder (11) is fixedly mounted with a first drilling machine (15) via a first supporting tube (13), the end surface of the double-arm rotating cylinder (11) is fixedly connected to a third rotary drive (12), the other side of the third rotary drive (12) is fixedly mounted with a second drilling machine (16) via a second supporting tube (14), and the first drilling machine (15) and the second drilling machine (16) constitute a double-arm drilling mechanism.

2. A novel double-arm down-the-hole drill according to claim 1, characterized in that: The base (2) is installed on the top of the crawler chassis (1), the slewing bearing (3) and the power system (4) are installed on the base (2), and the lifting column frame (5) is fixedly installed on the slewing bearing (3) through a pair of lifting cylinders (7), and vertical lifting is achieved through three guide columns (6).

3. A novel double-arm down-the-hole drill according to claim 1, characterized in that: The first drilling machine (15) and the second drilling machine (16) have the same structure, and both are composed of a compensation feed pipe (17), a compensation cylinder (18), a drilling frame (19), a drilling power component and an impact down-the-hole component, wherein the compensation feed pipe (17) is fixedly connected to the first support pipe (13) and the second support pipe (14) for installation, and a compensation cylinder (18) is fixedly installed inside the compensation feed pipe (17), and the output end of the compensation cylinder (18) is fixedly connected to the tail of the drilling frame (19).

4. A novel double-arm down-the-hole drill according to claim 3, characterized in that: The drilling power assembly comprises a motor (20), a mounting base (21) and a slider (22), wherein the motor (20) is fixedly mounted on the mounting base (21), the mounting base (21) is fixedly mounted on the top of the slider (22), and the slider (22) is slidably mounted on guide rails (23) mounted on both sides of the drilling frame (19).

5. A novel double-arm down-the-hole drill according to claim 4, characterized in that: The impact down-the-hole assembly comprises a connecting rod (24), an impactor (25) and a down-the-hole drill bit (26), wherein the down-the-hole drill bit (26) is installed at the end of the impactor (25), the tail end of the impactor (25) is connected to the connecting rod (24), and the other end of the connecting rod (24) is connected to the output end of the motor (20).

6. A novel double-arm down-the-hole drill according to claim 5, characterized in that: A driving cylinder (35) is provided inside the drilling frame (19); the tail of the driving cylinder (35) is fixedly connected to a first fixed pulley (29) via a fixing member (33); the fixing member (33) is fixedly connected to the tail of the drilling frame (19) via a screw rod; the head output end of the driving cylinder (35) is fixedly connected to a movable pulley group consisting of a first movable pulley (31) and a second movable pulley (32) via a connecting member (34); and a second fixed pulley (30) is fixedly installed on the inner wall of the head of the drilling frame (19).

7. A novel double-arm down-the-hole drill according to claim 6, characterized in that: The drilling frame (19) is further provided with a front chain (27) and a rear chain (28); one end of the front chain (27) is fixedly connected to the front end of the mounting base (21), and the other end of the front chain (27) is passed around the second fixed pulley (30) and the second movable pulley (32) in sequence, and finally fixedly connected to the inner wall of the head of the drilling frame (19); one end of the rear chain (28) is fixedly connected to the rear end of the mounting base (21), and the other end of the front chain (27) is passed around the first fixed pulley (29) and the first movable pulley (31) in sequence, and finally fixedly connected to the inner wall of the middle part of the drilling frame (19).

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