Quick connector device of down-the-hole hammer pile casing

Abstract

The utility model relates to a down-the-hole hammer pile casing quick connector device which comprises an upper steel pipe, a lower connector and an inserting plate piece, the upper steel pipe is coaxially connected with the lower connector, the outer diameter of the upper steel pipe is not larger than the inner diameter of the lower steel pipe, clamping blocks are arranged on the two sides of the upper steel pipe, the lower connector is provided with outer fixing plates corresponding to the clamping blocks, and the inserting plate piece is arranged on the lower connector. The upper steel pipe is rotationally clamped to the lower connector through the clamping block, an inserting plate piece used for locking the clamping block is clamped between the outer fixing plate and the lower connector, and the upper steel pipe is provided with a connecting hole used for fixing the inserting plate piece. The main purpose of the utility model is that when the pile casing needs to be lengthened, the upper steel pipe of the bottom pile casing is sleeved at the lower joint of the newly added pile casing, the clamping block at the upper steel pipe is rotated and clamped into the lower joint, and then the insertion plate piece is clamped into the outer fixing plate, so that the insertion plate piece abuts against the clamping block and is fixed through the screw; therefore, the pile casing pile pipe can be quickly lengthened.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling rigs, in particular to a down-the-hole hammer casing quick connector device. Background Art

[0002] A down-the-hole hammer is a device that generates impact loads during impact rotary drilling. It uses the energy in the flushing fluid supplied by the mud pump during the drilling process to directly drive the hammer inside the hydraulic hammer to form up and down reciprocating motion. The casing of the down-the-hole hammer is a component used to locate the pile position, and its length determines the required depth of construction.

[0003] During the down-the-hole hammer construction process, due to the geological uncertainty of the construction site, it is impossible to accurately calculate the length of the casing pile pipe based solely on the geological report. On-site staff will find that the customized casing sometimes cannot reach the depth required for construction. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the technical solution adopted by the utility model is: a down-the-hole hammer casing quick connector device, including an upper steel pipe, a lower joint and a plug-in plate, the upper steel pipe is coaxially connected to the lower joint, and the outer diameter of the upper steel pipe is not greater than the inner diameter of the lower steel pipe, blocks are provided on both sides of the upper steel pipe, the lower joint is provided with an external fixing plate corresponding to the block, the upper steel pipe is rotatably clamped to the lower joint through the block, and a plug-in plate for locking the block is clamped between the external fixing plate and the lower joint, and the upper steel pipe is provided with a connecting hole for fixing the plug-in plate.

[0005] By adopting the above technical scheme, the utility model mainly extends two adjacent casings by connecting them end to end and overlapping them. When the power head under the down-the-hole hammer is working, the casing rotates slowly. When the casing needs to be lengthened, the upper steel pipe at the bottom is sleeved on the lower joint of the newly added casing. At the same time, the clamping block at the upper steel pipe is rotated and clamped into the lower joint, and then the plug-in plate is clamped into the external fixing plate, so that the plug-in plate abuts against the clamping block, and then the plug-in plate is fixed by screws, thereby achieving the effect of extending the casing pile pipe.

[0006] The utility model is further configured that a straight groove and a locking groove matched with the clamping block are opened at the bottom of the lower joint, and the locking groove is arranged on one side of the straight groove.

[0007] Furthermore, a chamfered surface is provided below the linear groove.

[0008] By adopting the above technical solution, the locking groove and the straight groove are combined to form an L-shaped groove. When the clamping block is inserted into the lower joint, it is guided by the chamfered surface and inserted into the locking groove through the straight groove. The overall structure is simple and easy to process.

[0009] The utility model is further configured that a straight groove and a locking groove matched with the clamping block are opened at the bottom of the lower joint, and the locking grooves are arranged on both sides of the straight groove.

[0010] Furthermore, a chamfered surface is provided below the linear groove.

[0011] By adopting the above technical solution, the locking groove and the straight groove are combined to form a T-shaped groove, which is suitable for working conditions of rotation in different directions.

[0012] The utility model is further configured that the outer fixing plate includes an observation plate and a padding plate, the observation plate is fixedly connected to the lower joint through the padding plate, and a mounting groove for mounting the plug-in plate is formed between the observation plate and the lower joint.

[0013] Furthermore, the observation plate is provided with an observation window at the locking groove.

[0014] By adopting the above technical solution, the raising plate and the observation plate are welded to the outer surface of the lower joint in sequence. When the two casings are combined, it can be seen through the observation window whether the card block is completely inserted into the locking groove. When it is confirmed that the card block is in place, the plug-in plate is inserted from the installation groove between the observation plate and the lower joint. The overall structural design is reasonable.

[0015] The utility model is further configured that the upper steel pipe is provided with a lifting ear piece below the clamping block, and the distance a from the locking groove to the bottom surface of the lower joint is not greater than the distance b from the clamping block to the lifting ear piece.

[0016] By adopting the above technical solution, the lifting ear is provided with a hole for passing the lifting rope. When the upper steel pipe is lifted by the lifting ear on both sides of the upper steel pipe, the casing is oriented perpendicular to the ground, so as to facilitate the subsequent rapid removal or installation of the casing.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model mainly extends two adjacent casings by connecting them end to end and overlapping them. When the power head under the down-the-hole hammer is working, the casing rotates slowly. When the casing needs to be lengthened, the upper steel pipe at the bottom is sleeved on the lower joint of the newly added casing. At the same time, the clamping block at the upper steel pipe is rotated and clamped into the lower joint, and then the plug-in plate is clamped into the outer fixing plate, so that the plug-in plate abuts against the clamping block, and then the plug-in plate is fixed by screws, thereby realizing the rapid extension of the casing pile pipe.

[0019] The embodiments of the utility model are further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the casing of the utility model after being assembled and extended;

[0021] Figure 2 A half-section view of the casing of the first embodiment of the utility model;

[0022] Figure 3 For the utility model Figure 1 A partial enlarged view of the A-direction view;

[0023] Figure 4 A half-section view of a casing according to a second embodiment of the present invention;

[0024] Among them: 1-upper steel pipe, 2-lower joint, 3-insert plate, 4-block, 5-external fixing plate, 6-lifting ear, 11-connecting hole, 12-straight groove, 13-locking groove, 14-chamfered surface, 15-installation groove, 16-observation window, 51-observation plate, 52-heightening plate; DETAILED DESCRIPTION

[0025] like Figure 1 , 2 As shown, the utility model discloses a first embodiment of a down-the-hole hammer casing quick connector device, comprising an upper steel pipe 1, a lower joint 2 and a plug plate 3, the upper steel pipe 1 is coaxially connected to the lower joint 2, and the outer diameter of the upper steel pipe 1 is not greater than the inner diameter of the lower steel pipe, blocks 4 are provided on both sides of the upper steel pipe 1, the lower joint 2 is provided with an outer fixing plate 5 corresponding to the block 4, the upper steel pipe 1 is rotatably connected to the lower joint 2 through the block 4, and a plug plate 3 for locking the block 4 is connected between the outer fixing plate 5 and the lower joint 2, and the upper steel pipe 1 is provided with a connecting hole 11 for fixing the plug plate 3.

[0026] Combination Figure 3 As shown, in this embodiment, a linear groove 12 and a locking groove 13 adapted to the block 4 are provided at the bottom of the lower joint 2, the locking groove 13 is provided on one side of the linear groove 12, a chamfered surface 14 is provided below the linear groove 12, and the locking groove 13 and the linear groove 12 are combined to form an L-shaped groove.

[0027] In this embodiment, the external fixing plate 5 includes an observation plate 51 and a padding plate 52. The observation plate 51 is fixedly connected to the lower joint 2 through the padding plate 52, and a mounting groove 15 for mounting the plug-in plate 3 is formed between the observation plate 51 and the lower joint 2. The observation plate 51 is provided with an observation window 16 at the locking groove 13. The padding plate 52 and the observation plate 51 are welded to the outer surface of the lower joint 2 in sequence.

[0028] In this embodiment, the upper steel pipe 1 is provided with a lifting ear 6 below the clamping block 4, and the distance a from the locking groove 13 to the bottom surface of the lower joint 2 is not greater than the distance b from the clamping block 4 to the lifting ear 6, so as to avoid interference between the lifting ear 6 of the adjacent sheath and the lower joint 2 during installation.

[0029] like Figure 4As shown, the utility model discloses a second embodiment of a down-the-hole hammer casing quick connector device, which is different from the first embodiment in that the locking grooves 13 are arranged on both sides of the linear groove 12. Since the locking grooves 13 and the linear grooves 12 are combined to form a T-shaped groove, it is suitable for working conditions when the casing rotates in different directions, and has a wider range of applications.

[0030] The working principle of the utility model is that the utility model mainly extends two adjacent casings by connecting them end to end and overlapping them. When the power head under the down-the-hole hammer is working, the casing rotates slowly. When the casing needs to be lengthened, the upper steel pipe 1 is lifted by the crane through the lifting ear 6, and the upper steel pipe 1 of the bottom casing is sleeved on the lower joint 2 of the newly added casing. At the same time, the block 4 is guided by the chamfered surface 14, passes through the straight groove 12 and then rotates to be inserted into the locking groove 13. Through the observation window 16, it can be seen whether the block 4 is completely inserted into the locking groove 13. When it is confirmed that the block 4 is in place, the plug plate 3 is inserted from the installation groove 15 between the observation plate 51 and the lower joint 2, and then the plug plate 3 is completely fixed by screws, thereby achieving the effect of extending the casing pile pipe.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A down-the-hole hammer casing quick connector device, characterized in that: The invention comprises an upper steel pipe (1), a lower joint (2) and a plug-in plate (3), wherein the upper steel pipe (1) is coaxially connected to the lower joint (2), and the outer diameter of the upper steel pipe (1) is not greater than the inner diameter of the lower steel pipe, and clamping blocks (4) are provided on both sides of the upper steel pipe (1), and the lower joint (2) is provided with an outer fixing plate (5) corresponding to the clamping block (4), and the upper steel pipe (1) is rotatably clamped to the lower joint (2) through the clamping block (4), and a plug-in plate (3) for locking the clamping block (4) is clamped between the outer fixing plate (5) and the lower joint (2), and the upper steel pipe (1) is provided with a connecting hole (11) for fixing the plug-in plate (3).

2. A down-the-hole hammer casing quick connector device according to claim 1, characterized in that: The bottom of the lower joint (2) is provided with a linear groove (12) and a locking groove (13) adapted to the clamping block (4); the locking groove (13) is arranged on one side of the linear groove (12); and the plug-in plate (3) is clamped in the linear groove (12).

3. A down-the-hole hammer casing quick connector device according to claim 1, characterized in that: The bottom of the lower joint (2) is provided with a linear groove (12) and a locking groove (13) adapted to the clamping block (4); the locking groove (13) is arranged on both sides of the linear groove (12); and the plug-in plate (3) is clamped in the linear groove (12).

4. A down-the-hole hammer casing quick connector device according to claim 2 or 3, characterized in that: A chamfered surface (14) is provided below the linear groove (12).

5. A down-the-hole hammer casing quick connector device according to claim 1, characterized in that: The outer fixing plate (5) comprises an observation plate (51) and a padding plate (52); the observation plate (51) is fixedly connected to the lower joint (2) via the padding plate (52); and a mounting groove (15) for mounting the plug-in plate (3) is formed between the observation plate (51) and the lower joint (2).

6. A down-the-hole hammer casing quick connector device according to claim 5, characterized in that: The observation plate (51) is provided with an observation window (16) located at the locking groove (13).

7. A down-the-hole hammer casing quick connector device according to claim 2, characterized in that: The upper steel pipe (1) is provided with a lifting ear (6) below the clamping block (4), and the distance a from the locking groove (13) to the bottom surface of the lower joint (2) is not greater than the distance b from the clamping block (4) to the lifting ear (6).

Images