Device capable of assisting rotary drilling rig in burying pile casing

Abstract

The utility model relates to a device capable of assisting a rotary drilling rig in burying a pile casing, belongs to the technical field of building construction, and particularly relates to a device capable of assisting the rotary drilling rig in burying the pile casing, which comprises a driving sleeve, a pair of counterweight steel plates are welded on one side of the driving sleeve, and an upper lug plate and a lower lug plate are welded on the other side of the driving sleeve. The top end of the upper lug plate and the bottom end of the lower lug plate are fixedly provided with a pair of vertical stiffening ribs with the peripheral wall of the driving sleeve respectively; the utility model achieves the effects of high construction efficiency and material saving, and solves the problems of low construction efficiency, excessive material consumption and poorer economical efficiency and timeliness caused by the fact that the existing patent is simple in structure and narrow in application range, and resistance is easily encountered when a deep, large and large-diameter pile casing is put down in a block gravel high backfill field.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a device which can assist a rotary drilling rig in burying a casing. Background Art

[0002] Due to the loose soil, poor cohesion of the soil layer and large stones in the high backfill site of crushed stone, the use of rotary drilling piles is prone to hole collapse and difficulty in drilling. After drilling, the hole wall is unstable, the hole wall collapses frequently, the negative friction is large, and the concrete filling coefficient is large. In view of the above situation, the main construction method currently used is steel casing follow-up.

[0003] After searching, a Chinese patent with publication number CN210598831U discloses a reaming device for burying casing in combination with a rotary drilling rig, including a fixing seat and a reamer. The fixing seat is fixed on the top seat of the drill bit. The fixing seat is a hollow cavity with one end open. The closed end of the fixing seat faces the central axis of the drill bit, and the open end faces the outer peripheral surface of the drill bit. The reamer includes a cutter head and a shank. The shank is vertically connected to the cutter head, and the shank is inserted into the fixing seat. One end of the cutter head is a blade, and the blade is arranged along the axial direction of the drill bit.

[0004] Based on the above search and combined with existing technology findings;

[0005] The above-mentioned search patent has a simple structure and a narrow scope of application. It is easy to encounter resistance when lowering a deep and long-diameter casing in a high-backfill site of crushed stone, which leads to reduced construction efficiency, excessive consumption of materials, poor economy and timeliness, and therefore has certain limitations. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes a device that can assist a rotary drilling rig in burying a casing, thereby avoiding excessive resistance and improving economy and applicability.

[0007] The technical solution for achieving the purpose of the utility model is: a device that can assist a rotary drilling rig in burying a casing, comprising a driving sleeve, a pair of counterweight steel plates welded to one side of the driving sleeve, an upper ear plate and a lower ear plate welded to the other side of the driving sleeve, and a pair of vertical stiffening ribs fixedly mounted on the outer peripheral wall of the driving sleeve at the top end of the upper ear plate and the bottom end of the lower ear plate.

[0008] Preferably, a torque steel plate is provided between the upper ear plate and the lower ear plate, and a lifting lug is fixedly installed on the surface of the torque steel plate.

[0009] Preferably, a pair of connecting pin holes are provided on the upper ear plate, the lower ear plate and the torque steel plate, and a pair of pin shafts are installed between the upper ear plate, the lower ear plate and the torque steel plate through pin-controlled sliding.

[0010] Compared with the prior art, the present invention has the following significant advantages:

[0011] Firstly, the utility model effectively solves the resistance problem encountered when lowering deep and long-diameter casings in high-burden backfill sites. This innovative design not only expands the application scope of rotary drilling rigs for placing casings, but also significantly increases the construction speed, thereby accelerating the project progress and improving construction efficiency.

[0012] Secondly, the utility model also adopts a pin to connect the moment steel plate and the driving sleeve, which is convenient for quick disassembly and reuse, greatly saving material consumption, increasing the turnover rate of construction equipment, and further improving economic benefits.

[0013] The invention solves the problems of the existing patent having a simple structure, a narrow scope of application, and easily encountering resistance when lowering a long and long diameter casing in a high backfill site of crushed stone, thereby reducing construction efficiency, excessive consumption of materials, and poor economy and timeliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the overall front view structure provided by the utility model;

[0016] Figure 2 It is a schematic diagram of the overall top view structure provided by the utility model.

[0017] Description of reference numerals:

[0018] 1. Drive sleeve; 2. Counterweight steel plate; 3. Torque steel plate; 4. Lifting lug; 5. Vertical stiffening rib; 6. Connecting pin hole; 7. Lower lug plate; 8. Upper lug plate; 9. Pin shaft. DETAILED DESCRIPTION

[0019] The following is a detailed description of the present invention, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The utility model provides a device that can assist a rotary drilling rig in burying casing through improvement. The technical solution of the utility model is:

[0021] like Figure 1-2As shown, a device that can assist a rotary drilling rig in burying casing includes a driving sleeve 1, a pair of counterweight steel plates 2 are welded to one side of the driving sleeve 1, and an upper ear plate 8 and a lower ear plate 7 are welded to the other side of the driving sleeve 1. The top end of the upper ear plate 8 and the bottom end of the lower ear plate 7 are respectively fixed to the outer peripheral wall of the driving sleeve 1 with a pair of vertical stiffening ribs 5, which effectively balance the weight of the driving sleeve 1, improve the accuracy and stability of sinking, and prevent vertical deformation during operation. Two vertical stiffening ribs 5 are welded to each of the upper ear plate 8 and the lower ear plate 7 to enhance their vertical rigidity.

[0022] Furthermore, a torque steel plate 3 is provided between the upper ear plate 8 and the lower ear plate 7 , and a lifting lug 4 is fixedly mounted on the surface of the torque steel plate 3 , so that the backhoe can effectively transmit the torque to the drive sleeve 1 .

[0023] Furthermore, a pair of connecting pin holes 6 are provided on the upper ear plate 8, the lower ear plate 7 and the torque steel plate 3, and a pair of pin shafts 9 are slidably installed between the upper ear plate 8, the lower ear plate 7 and the torque steel plate 3 through the pin control 6. This connection method is simple and reliable and easy to install and disassemble.

[0024] The specific working method is as follows: Two horizontal lugs are welded to one side of the middle of the drive casing 1, with a spacing greater than the thickness of the torque steel plate plus 20 mm to ensure sufficient installation space. To prevent vertical deformation during operation, two vertical stiffeners 5 are welded to each of the upper and lower lugs 8 and 7 to enhance their vertical rigidity. A steel plate lifting lug 4 is welded to the center of the upper surface of the torque steel plate 3 for threading the strands for connection to the backhoe. Two connecting pin holes 6 are provided in corresponding positions on the torque steel plate 3 and the upper and lower lugs for connecting the two pins 9. Furthermore, to address the gravity eccentricity of the drive casing 1 and ensure the verticality of the casing during the sinking process, two counterweight steel plates 2 are welded to the opposite side of the middle of the drive casing 1. Finally, the casing is removed. While pouring concrete, the guide tube and steel casing are removed. Care should be taken to always keep the casing bottom below the concrete surface, typically 2 to 6 meters. The concrete pouring time should be controlled to avoid "pipe blocking" that would make the outer casing difficult to remove.

[0025] The technical means disclosed in the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacements of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A device for assisting a rotary drilling rig in burying casing, comprising a driving casing (1), characterized in that: A pair of counterweight steel plates (2) are welded to one side of the drive sleeve (1), and an upper ear plate (8) and a lower ear plate (7) are welded to the other side of the drive sleeve (1). A pair of vertical stiffening ribs (5) are fixedly mounted on the outer peripheral wall of the drive sleeve (1) at the top end of the upper ear plate (8) and the bottom end of the lower ear plate (7).

2. The device for assisting a rotary drilling rig in burying casing according to claim 1, characterized in that: A torque steel plate (3) is provided between the upper ear plate (8) and the lower ear plate (7), and a lifting lug (4) is fixedly mounted on the surface of the torque steel plate (3).

3. The device for assisting a rotary drilling rig in burying casing according to claim 1, characterized in that: A pair of connecting pin holes (6) are provided on the upper ear plate (8), the lower ear plate (7) and the torque steel plate (3), and a pair of pin shafts (9) are slidably installed between the upper ear plate (8), the lower ear plate (7) and the torque steel plate (3) through the connecting pin holes (6).

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