Annular coring down-the-hole hammer for full-rotation construction

Abstract

The utility model discloses an annular coring down-the-hole hammer for full-rotation construction, relates to the technical field of drilling construction, and solves the problems that a hammer head of the down-the-hole hammer cannot be replaced, the whole down-the-hole hammer needs to be replaced when construction is carried out on different rock stratums, and the replacement is troublesome, the annular coring down-the-hole hammer comprises a down-the-hole hammer body, and an installation piece is arranged at the front end of the down-the-hole hammer body. A crushing mechanism used for rock stratum construction is arranged on one side of the mounting part, a fixing mechanism used for limiting is mounted in the crushing mechanism, a connecting column is fixed to the rear end of the down-hole hammer body, and a movable rod which is in telescopic connection with the down-hole hammer body is fixed to the side wall of the mounting part. By unscrewing the fixing screw rod, under the cooperation of the connecting piece and the fixing bearing, normal rotation of the fixing screw rod is guaranteed, then the fixing plate and the two limiting plates are driven to be separated, in this way, fixing of the connecting rod can be relieved, the hammer head can be replaced after being detached from the mounting piece, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the field of drilling construction, in particular to an annular coring down-the-hole hammer for full-rotation construction. Background Art

[0002] The annular coring down-the-hole hammer for full-rotation construction is a tool used in the field of drilling construction machinery technology. It combines the functions of a full-rotation drill rig and a down-the-hole hammer, and is used for foundation pit bite pile and down-the-hole hammer construction under height-restricted conditions. It can drive the steel casing for 360° rotary drilling, and press the casing into the deep soil layer under the combined action of the pressing force and torque. It is installed on the drilling rig and the pile is driven into the formation by the down-the-hole hammer to achieve coring, hole expansion and other operations.

[0003] The Chinese utility model (Announcement No.: CN215859971U) discloses an annular cutting and coring down-the-hole hammer drill, which includes a slag collecting bucket, an upper cylinder, a splitter top column, a lower cylinder and an impactor; the slag collecting bucket is used to collect gravel; the upper cylinder is connected to the slag collecting bucket, and the upper cylinder includes a side wall; the splitter top column can be arranged on the side wall in a radially telescopic manner along the upper cylinder; the lower cylinder is connected to the upper cylinder; the impactor can move along the axial direction of the lower cylinder. It increases the depth of the down-the-hole hammer by setting the slag collecting bucket, the upper cylinder and the impactor, and at the same time sets the splitter top column, integrates the coring function, improves work efficiency, and annular cutting effectively reduces the workload of cutting rocks during the drilling process, improves work efficiency, and reduces energy consumption.

[0004] The above technical solution improves work efficiency by integrating the coring function, and the annular cutting effectively reduces the workload of cutting rocks during the drilling process. However, it is impossible to replace the hammer head of the down-the-hole hammer. When constructing different rock formations, the entire down-the-hole hammer needs to be replaced, which is rather troublesome. Therefore, a full-rotation annular coring down-the-hole hammer is now proposed. Utility Model Content

[0005] In order to improve the problem that the hammer head of a down-the-hole hammer cannot be replaced and the entire down-the-hole hammer needs to be replaced when constructing in different rock formations, which is quite troublesome, the utility model provides an annular coring down-the-hole hammer for full-rotation construction.

[0006] The utility model provides an annular coring down-the-hole hammer for full-rotation construction, which adopts the following technical scheme:

[0007] An annular coring down-the-hole hammer for full-rotation construction comprises a down-the-hole hammer body, a mounting piece is arranged at the front end of the down-the-hole hammer body, a crushing mechanism for rock formation construction is arranged on one side of the mounting piece, a fixing mechanism for limiting is installed inside the crushing mechanism, a connecting column is fixed to the rear end of the down-the-hole hammer body, and a movable rod telescopically connected to the down-the-hole hammer body is fixed to the side wall of the mounting piece.

[0008] By adopting the above technical solution, the down-the-hole hammer can be connected to external equipment through the connecting column arranged on the down-the-hole hammer body.

[0009] Optionally, a guide column is fixed to the inner wall of the down-the-hole hammer body, and one end of the guide column is slidably connected to an impact piece.

[0010] By adopting the above technical solution, gas is transported into the down-the-hole hammer body through the gas pipeline, so that the impact piece moves to impact the movable rod.

[0011] Optionally, the crushing mechanism includes a hammer head, which is arranged on one side of the mounting member, a connecting rod is fixed to the side wall of the hammer head, and a limiting rod is fixed to the end of the connecting rod.

[0012] By adopting the above technical solution, with the cooperation of the limit rod and the positioning hole, the connecting rod can be driven to rotate, and then the hammer head can be driven to rotate, thereby ensuring the crushing effect on the rock formation.

[0013] Optionally, a transmission rod is connected to the end of the limit rod, a positioning hole matching the limit rod is opened inside the transmission rod, and a hydraulic motor fixed to the mounting piece is fixed to one side of the transmission rod.

[0014] By adopting the above technical solution, the hydraulic motor arranged in the mounting part is driven by the hydraulic oil delivered by the external hydraulic pipeline, so that the hydraulic motor drives the transmission rod to rotate.

[0015] Optionally, the fixing mechanism includes a limit plate, and two limit plates are provided. The two limit plates are respectively fixed to the ends of the connecting rod and the transmission rod, and the outer surfaces of the two limit plates are connected to the fixing plates.

[0016] By adopting the above technical solution, the fixing plate and the two limiting plates are separated, so that the fixing of the connecting rod can be released.

[0017] Optionally, a fixing groove matching the limiting plate is opened inside the fixing plate, a connecting piece is fixed to the outer wall of the fixing plate, a fixed bearing is inlaid on the inner surface of the connecting piece, and a fixing screw threadedly connected to the mounting piece is fixed inside the fixed bearing.

[0018] By adopting the above technical solution, the fixing screw is tightened so that the fixing groove inside the fixing plate and the two limit plates are engaged with each other, thereby fixing the fixing plate.

[0019] Optionally, two fixing blocks are fixed to the outer surface of the fixing plate, and guide rods fixed to the mounting components penetrate the interiors of the two fixing blocks.

[0020] By adopting the above technical solution, the guide rods provided on the fixed block can ensure the stability of the fixed plate during movement and avoid deviation.

[0021] In summary, the utility model has the following beneficial effects:

[0022] 1. The utility model loosens the fixing screw, and under the cooperation of the connecting piece and the fixed bearing, ensures the normal rotation of the fixing screw, thereby driving the fixing plate and the two limit plates to separate, so that the fixing of the connecting rod can be released, and the hammer head can be removed from the mounting piece for replacement, which is convenient for use;

[0023] 2. The utility model is driven by the hydraulic oil delivered by the external hydraulic pipeline through the hydraulic motor arranged in the mounting part, so that the hydraulic motor drives the transmission rod to rotate, and with the cooperation of the limit rod and the positioning hole, it can synchronously drive the connecting rod to rotate, and then drive the hammer head to rotate, thereby ensuring the crushing effect on the rock formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the mounting piece of the utility model;

[0026] Figure 3 It is a three-dimensional structural schematic diagram of the connecting rod of the utility model;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the down-the-hole hammer of the utility model.

[0028] Description of reference numerals:

[0029] 1. DTH hammer body; 2. Mounting parts; 3. Hammer head; 31. Connecting rod; 32. Limiting rod; 33. Transmission rod; 34. Positioning hole; 35. Hydraulic motor; 4. Limiting plate; 41. Connecting parts; 42. Fixed bearing; 43. Fixed screw; 44. Fixed plate; 45. Fixed groove; 46. Fixed block; 47. Guide rod; 5. Connecting column; 6. Movable rod; 7. Impact piece; 8. Guide column. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0031] Please refer to Figure 1-Figure 4A ring-shaped coring down-the-hole hammer for full-rotation construction comprises a down-the-hole hammer body 1, a mounting member 2 is arranged at the front end of the down-the-hole hammer body 1, a crushing mechanism for rock construction is arranged on one side of the mounting member 2, a fixing mechanism for limiting is arranged inside the crushing mechanism, a connecting column 5 is fixed to the rear end of the down-the-hole hammer body 1, and a movable rod 6 telescopically connected to the down-the-hole hammer body 1 is fixed to the side wall of the mounting member 2. The down-the-hole hammer can be connected to external equipment through the connecting column 5 arranged on the down-the-hole hammer body 1.

[0032] Reference Figure 1 , Figure 2 and Figure 3 A guide column 8 is fixed to the inner wall of the down-the-hole hammer body 1, and an impact piece 7 is slidably connected to one end of the guide column 8. Gas is transported into the down-the-hole hammer body 1 through a gas pipeline, so that the impact piece 7 moves to impact the movable rod 6; the crushing mechanism includes a hammer head 3, which is arranged on one side of the mounting member 2. A connecting rod 31 is fixed to the side wall of the hammer head 3, and a limiting rod 32 is fixed to the end of the connecting rod 31. Through the cooperation of the limiting rod 32 and the positioning hole 34, the connecting rod 31 can be driven to rotate, thereby driving the hammer head 3 to rotate, thereby ensuring the crushing effect on the rock formation;

[0033] The end of the limit rod 32 is connected to a transmission rod 33, and a positioning hole 34 matching the limit rod 32 is opened inside the transmission rod 33. A hydraulic motor 35 fixed to the mounting member 2 is fixed on one side of the transmission rod 33. The hydraulic motor 35 arranged in the mounting member 2 is driven by hydraulic oil transported by an external hydraulic pipeline, so that the hydraulic motor 35 drives the transmission rod 33 to rotate.

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The fixing mechanism includes a limit plate 4, two limit plates 4 are provided, and the two limit plates 4 are respectively fixed to the ends of the connecting rod 31 and the transmission rod 33. The outer surfaces of the two limit plates 4 are connected to a fixing plate 44. The fixing plate 44 and the two limit plates 4 are separated, so that the fixing of the connecting rod 31 can be released;

[0035] A fixing groove 45 matching the limit plate 4 is provided inside the fixing plate 44, a connecting piece 41 is fixed to the outer wall of the fixing plate 44, a fixing bearing 42 is inlaid on the inner surface of the connecting piece 41, a fixing screw 43 threadedly connected to the mounting piece 2 is fixed inside the fixing bearing 42, and by tightening the fixing screw 43, the fixing groove 45 inside the fixing plate 44 and the two limit plates 4 are engaged, thereby fixing them;

[0036] Two fixing blocks 46 are fixed to the outer surface of the fixing plate 44. The insides of the two fixing blocks 46 are penetrated by guide rods 47 fixed to the mounting member 2. The guide rods 47 provided on the fixing blocks 46 can ensure the stability of the fixing plate 44 during movement and avoid deviation.

[0037] The implementation principle of the utility model is as follows: before using the annular coring DTH hammer for full-rotation construction, the DTH hammer is first connected to external equipment through the connecting column 5 provided on the DTH hammer body 1. When in use, gas is transported into the DTH hammer body 1 through the gas pipeline, so that the impact member 7 moves to impact the movable rod 6. The provided guide column 8 can play a guiding role, thereby causing the hammer head 3 to vibrate and break the rock formation. At the same time, the hydraulic motor 35 provided in the mounting member 2 is driven by the hydraulic oil transported by the external hydraulic pipeline, so that the hydraulic motor 35 drives the transmission rod 33 to rotate, and with the cooperation of the limit rod 32 and the positioning hole 34, it can synchronously drive the connecting rod 31 to rotate. , thereby driving the hammer head 3 to rotate to ensure the crushing effect on the rock formation. When the hammer head 3 needs to be replaced, by loosening the fixing screw 43, with the cooperation of the connecting piece 41 and the fixed bearing 42, the normal rotation of the fixing screw 43 is ensured, thereby driving the fixing plate 44 and the two limit plates 4 to separate, so that the fixation of the connecting rod 31 can be released, and then the hammer head 3 can be removed from the mounting piece 2 for replacement. After replacement, the fixing screw 43 is tightened again, so that the fixing groove 45 inside the fixing plate 44 is engaged with the two limit plates 4, and then fixed. The guide rod 47 provided on the fixing block 46 can ensure the stability of the fixing plate 44 during movement to avoid deviation.

[0038] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A fully rotary coring down-the-hole hammer, comprising a down-the-hole hammer body (1), characterized in that: A mounting member (2) is arranged at the front end of the down-the-hole hammer body (1); a crushing mechanism for rock layer construction is arranged on one side of the mounting member (2); a fixing mechanism for limiting position is installed inside the crushing mechanism; a connecting column (5) is fixed at the rear end of the down-the-hole hammer body (1); and a movable rod (6) telescopically connected to the down-the-hole hammer body (1) is fixed to the side wall of the mounting member (2).

2. The annular coring down-the-hole hammer for full-rotation construction according to claim 1 is characterized in that: A guide column (8) is fixed to the inner wall of the down-the-hole hammer body (1), and an impact piece (7) is slidably connected to one end of the guide column (8).

3. The annular coring down-the-hole hammer for full-rotation construction according to claim 1 is characterized in that: The crushing mechanism comprises a hammer head (3), wherein the hammer head (3) is arranged on one side of the mounting member (2), a connecting rod (31) is fixed to the side wall of the hammer head (3), and a limiting rod (32) is fixed to the end of the connecting rod (31).

4. The annular coring down-the-hole hammer for full-rotation construction according to claim 3 is characterized in that: The end of the limit rod (32) is connected to a transmission rod (33), a positioning hole (34) matching the limit rod (32) is provided inside the transmission rod (33), and a hydraulic motor (35) fixed to the mounting member (2) is fixed to one side of the transmission rod (33).

5. The annular coring down-the-hole hammer for full-rotation construction according to claim 4 is characterized in that: The fixing mechanism comprises a limit plate (4), two limit plates (4) are provided, the two limit plates (4) are respectively fixed to the ends of the connecting rod (31) and the transmission rod (33), and the outer surfaces of the two limit plates (4) are connected to a fixing plate (44).

6. The annular coring down-the-hole hammer for full-rotation construction according to claim 5, characterized in that: A fixing groove (45) matching the limiting plate (4) is provided inside the fixing plate (44), a connecting piece (41) is fixed to the outer wall of the fixing plate (44), a fixing bearing (42) is embedded on the inner surface of the connecting piece (41), and a fixing screw (43) threadedly connected to the mounting piece (2) is fixed inside the fixing bearing (42).

7. The annular coring down-the-hole hammer for full-rotation construction according to claim 6, characterized in that: Two fixing blocks (46) are fixed to the outer surface of the fixing plate (44), and guide rods (47) fixed to the mounting member (2) are passed through the interior of the two fixing blocks (46).

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