Connecting device for connecting rotary drilling rig and pile casing

Abstract

The utility model belongs to the technical field of rotary drilling rigs, and discloses a connecting device for connecting a rotary drilling rig and a pile casing, which comprises a first connecting piece and a second connecting piece, the first connecting piece is connected with a drill rod of the rotary drilling rig, and a plurality of sets of second connecting pieces are arranged between the first connecting piece and the inner wall of the pile casing in the circumferential direction of the pile casing. The second connecting piece comprises a sleeve and a sliding rod, and the first end of the sleeve is connected with the first connecting piece; the first end of the sliding rod is inserted into the second end of the sleeve to be movably arranged, and the second end of the sliding rod is connected with the inner wall of the pile casing. The telescopic second connecting piece is connected with the pile casing, and the first connecting piece is connected with the rotary drilling rig, so that the device can adapt to the pile casings with different sizes and specifications, different pile casings and rotary drilling rigs can be selected according to different working conditions, the device is convenient and rapid to assemble, the construction period is shortened, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary drilling rigs, and in particular relates to a connecting device for connecting a rotary drilling rig and a casing. Background Art

[0002] During rotary drilling, there is a thick layer of backfill soil in the foundation pit, which is mixed with boulders and other foreign objects. During the test drilling and rotary excavation, the backfill soil is disturbed by vibration, which easily leads to a large number of hole collapses. This not only affects the stability of the pile, but also increases the difficulty and risk of construction. In this case, it is generally necessary to use full casing to follow up the lead hole.

[0003] When lowering casing in bored pile construction, a variety of equipment is needed. However, due to different regional geological conditions, the equipment used and the specifications of the casing are also different, which may be difficult to match when connecting the rotary drilling rig and the casing.

[0004] Therefore, it is necessary to propose a connection device that is widely suitable for connecting a rotary drilling rig and a casing, so that the operation of lowering the casing is easier. Utility Model Content

[0005] The purpose of the utility model is to provide a connection device suitable for various rotary drilling rigs and casings. The specific technical scheme is as follows:

[0006] A connecting device for connecting a rotary drilling rig and a casing, comprising a first connecting member and a second connecting member;

[0007] The first connecting member is connected to the drill rod of the rotary drilling rig, and a plurality of groups of second connecting members are arranged between the first connecting member and the inner wall of the casing along the circumference of the casing;

[0008] The second connecting member includes a sleeve and a sliding rod, wherein the first end of the sleeve is connected to the first connecting member; the first end of the sliding rod is inserted into the second end of the sleeve and movably arranged, and the second end of the sliding rod is connected to the inner wall of the casing.

[0009] Preferably, fixing through holes are provided at intervals on the sleeve and the slide rod, and the sleeve and the slide rod are fixed in relative position by a combination of the fixing through holes and fixing members; the fixing members are screws or pins.

[0010] Preferably, the sliding rod and the casing are detachably connected via bolts.

[0011] Preferably, the first connecting member is further provided with a connecting hole, and the connecting hole is connected to the drill rod of the rotary drilling rig.

[0012] Preferably, it further comprises a plurality of groups of connecting plates, and the first connecting member and the second connecting member, and two adjacent second connecting members are connected via the connecting plates.

[0013] Preferably, it further comprises a base, and the first connecting member and the second connecting member are both arranged on the base.

[0014] Preferably, the first connecting member and the sleeve are both welded to the base, and the sleeve and the first connecting member are welded to each other.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model discloses a connecting device for connecting a rotary drilling rig and a casing, comprising:

[0017] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a connecting device for connecting a rotary drilling rig and a casing in an embodiment;

[0019] Figure 2 It is a connection diagram between the connecting device and the casing.

[0020] In the figure: 1. first connecting member, 1.1. connecting hole; 2. second connecting member, 2.1. sleeve; 2.2. slide rod; 2.3. fixing through hole; 2.4. fixing member; 2.5. bolt; 3. connecting plate; 4. base; 5. casing. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0022] Example:

[0023] See also Figure 1 and Figure 2 A connecting device for connecting a rotary drilling rig and a casing, comprising a first connecting member 1 and a second connecting member 2; the first connecting member 1 is connected to the drill rod of the rotary drilling rig, and a plurality of second connecting members 2 are arranged between the first connecting member 1 and the inner wall of the casing 5 along the circumference of the casing 5; the second connecting member 2 comprises a sleeve 2.1 and a sliding rod 2.2, the first end of the sleeve 2.1 is connected to the first connecting member 1; the first end of the sliding rod 2.2 is inserted into the second end of the sleeve 2.1 and is movably arranged, and the second end of the sliding rod 2.2 is connected to the inner wall of the casing 5. The first connecting member is connected to the rotary drilling rig by the telescopic second connecting member connected to the casing, which can adapt to casings of different sizes and specifications, facilitates the selection of different casings and rotary drilling rigs according to different working conditions, and is convenient and quick to assemble, reducing the construction period and manufacturing cost.

[0024] The sleeve 2.1 and the slide bar 2.2 are also provided with fixing through holes 2.3 at intervals, and the sleeve 2.1 and the slide bar 2.2 are fixed in relative position by the combination of the fixing through holes 2.3 and the fixing member 2.4; the fixing member 2.4 is a screw or a pin. The fixing member can be used to quickly and conveniently fix the second connecting member at a suitable length, so that the connecting device can be easily installed in the casing.

[0025] The slide bar 2.2 is detachably connected to the casing 5 by bolts 2.5. The detachable connection by bolts is reliable and easy to install and remove.

[0026] The first connecting member 1 is also provided with a connecting hole 1.1, and the connecting hole 1.1 is connected to the drill rod of the rotary drilling rig.

[0027] This embodiment further includes a plurality of connecting plates 3, and the first connecting member 1 and the second connecting member 2, and two adjacent second connecting members 2 are connected via the connecting plates 3. The connecting plates can strengthen the connection strength between the first connecting member and the second connecting member, and between the sleeves of the plurality of second connecting members, and can resist working conditions such as large construction vibration.

[0028] In this embodiment, the second connecting members are preferably evenly arranged in four groups around the first connecting member, and a connecting plate is arranged between every two groups of sleeves.

[0029] It also includes a base 4, on which the first connector 1 and the second connector 2 are both arranged. The first connector 1 and the sleeve 2.1 are both welded to the base 4, and the sleeve 2.1 and the first connector 1 are welded to each other.

[0030] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A connecting device for connecting a rotary drilling rig and a casing, characterized in that: It comprises a first connecting member (1) and a second connecting member (2); The first connecting member (1) is connected to a drill rod of a rotary drilling rig, and a plurality of groups of second connecting members (2) are arranged between the first connecting member (1) and the inner wall of the casing (5) along the circumference of the casing (5); The second connecting member (2) comprises a sleeve (2.1) and a sliding rod (2.2); the first end of the sleeve (2.1) is connected to the first connecting member (1); the first end of the sliding rod (2.2) is inserted into the second end of the sleeve (2.1) and movably arranged; the second end of the sliding rod (2.2) is connected to the inner wall of the casing (5).

2. A connecting device for connecting a rotary drilling rig and a casing according to claim 1, characterized in that: The sleeve (2.1) and the slide bar (2.2) are also provided with fixed through holes (2.3) at intervals, and the sleeve (2.1) and the slide bar (2.2) are fixed in relative position through a combination of the fixed through holes (2.3) and a fixing member (2.4); the fixing member (2.4) is a screw or a pin.

3. The connecting device for connecting a rotary drilling rig and a casing according to claim 1, characterized in that: The sliding rod (2.2) and the casing (5) are detachably connected via bolts (2.5).

4. The connecting device for connecting a rotary drilling rig and a casing according to claim 1, characterized in that: The first connecting member (1) is also provided with a connecting hole (1.1), and the connecting hole (1.1) is connected to a drill rod of a rotary drilling rig.

5. The connecting device for connecting a rotary drilling rig and a casing according to claim 1, characterized in that: It also comprises a plurality of groups of connecting plates (3), and the first connecting member (1) and the second connecting member (2), and two adjacent second connecting members (2) are connected via the connecting plates (3).

6. The connecting device for connecting a rotary drilling rig and a casing according to claim 1, characterized in that: It also comprises a base (4), and the first connecting member (1) and the second connecting member (2) are both arranged on the base (4).

7. The connecting device for connecting a rotary drilling rig and a casing according to claim 6, characterized in that: The first connecting member (1) and the sleeve (2.1) are both welded to the base (4), and the sleeve (2.1) and the first connecting member (1) are welded to each other.

Images