Cast-in-situ bored pile device

Abstract

The utility model belongs to the technical field of cast-in-situ bored piles, and particularly relates to a cast-in-situ bored pile device which is characterized in that an upper connecting ring is fixedly mounted on the surface of a drilling mast square box, a lifting oil cylinder penetrates through the middle of the upper connecting ring to be fixedly mounted, and a bearing is sleeved on the contact surface of the upper connecting ring and the lifting oil cylinder; a rotating shaft transversely penetrates through the bottom of the lifting oil cylinder and is rotationally installed, the two sides of the circumferential surface of the rotating shaft are sleeved with connecting pieces in parallel, a follow-up frame is assembled in the middle of the surface of the drilling mast square box, the follow-up frame is fixedly connected with the connecting pieces, and the effects of lifting and accidental sliding prevention are achieved when the follow-up frame moves. The tool bit on the lower portion of the rotary excavating drilling tool and the slag box are generally integrated, the drilling tool is complex to replace, the tool bit on the lower portion is changed into the detachable double-set tool bit, the drilling tool is convenient to replace, the rotary excavating efficiency is improved, and drilling and pouring operation on the ground is completed along with rotation of the tool bit in the rotary excavating process.

Description

Technical Field

[0001] The utility model belongs to the technical field of bored cast-in-place piles, and specifically relates to a bored cast-in-place pile device. Background Art

[0002] A bored cast-in-place pile is a pile formed by forming a hole in place and pouring concrete or reinforced concrete. It is commonly made by using a spiral drill, a submersible drill, etc. to form a hole in place and pour concrete. During construction, there is no vibration and no soil extrusion, but the settlement of the pile is slightly larger. The spiral drill is suitable for cohesive soil, sandy soil, artificial fill, etc. above the groundwater level. The soil blocks cut by the drill rise along the spiral blades on the drill rod and are discharged out of the hole. The drill rod is selected according to the soil quality and water content.

[0003] In the prior art, bored cast-in-place piles are generally operated by a rotary drilling rig, which usually consists of an operator's cab, a luffing mechanism, a mast assembly, a hoisting device, a power head, and a drill tool. The angle of the mast assembly is adjusted through the operator's cab, the height of the drill tool from the ground is adjusted by the hoisting device, and the rotation of the power head drives the rotation of the drill tool below to achieve the operation of bored cast-in-place piles on the ground.

[0004] In the existing rotary drilling rigs currently, the movement of the power head on the surface of the drill rod and the drill tool is usually controlled by a follower frame installed on the surface of the mast. As the operation time increases, there are certain potential safety hazards in the stability of the follower frame, and the cutter head below the drill tool is usually integrated with the slag box, which is rather cumbersome when replacing the drill tool. Therefore, a bored cast-in-place pile device is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the existing equipment, the utility model proposes a bored cast-in-place pile device.

[0006] The technical solution adopted by the utility model to solve its technical problems is a bored cast-in-place pile device, which includes a drill mast square box. An upper connecting ring is fixedly installed on the surface of the drill mast square box. The lifting oil cylinder penetrates through the middle of the upper connecting ring and is fixedly installed. A bearing is sleeved on the contact surface between the upper connecting ring and the lifting oil cylinder. The bottom of the lifting oil cylinder is horizontally penetrated and rotatably installed by a rotating shaft. On both sides of the circumferential surface of the rotating shaft, a group of connecting pieces are parallelly sleeved. In the middle of the surface of the drill mast square box, a follower frame is assembled. The follower frame is fixedly connected with the connecting pieces, which plays a role in lifting and preventing accidental slipping when the follower frame moves. At the bottom of the slag box, two groups of rotary cutter heads are arranged. The rotary cutter heads are rotatably connected through the drill rod. An auxiliary drill bit is rotatably installed at the bottom of the drill rod. During rotary drilling, the operation of bored cast-in-place piles on the ground is completed along with the rotation of the cutter head.

[0007] Preferably, a pulley frame is rotatably installed on the top of the drill mast square box, and two sets of rotating shafts are rotatably installed on the top of the pulley frame. The two sets of pulleys are rotatably installed in the middle of the rotating shafts. The two sets of pulleys are connected by wire rope transmission, and the overall lifting operation is completed by the cooperation of the wire rope and the pulley.

[0008] Preferably, a stabilizing frame is fixedly installed on the upper surface of the drill mast square box, the middle part of the front end of the stabilizing frame is penetrated by the drill rod and rotatably installed, a bearing is mounted on the circumferential surface of the drill rod, and a sealing lifter is rotatably installed below the stabilizing frame, the sealing lifter is vertically penetrated by the drill rod, and a bearing is mounted on the contact surface between the sealing lifter and the drill rod, which plays a stabilizing role when the drill rod is raised or lowered.

[0009] Preferably, a rotating body is fixedly installed on the surface of the follower frame, a power head is mounted in the middle of the rotating body, the drill rod passes through the power head, and a graded drill rod is rotatably installed on the bottom of the power head. The rotation of the power head drives the rotation of the entire drill rod to complete the rotary drilling operation.

[0010] Preferably, the grading drill rod is rotatably connected to the slag box, a drill rod is assembled inside the grading drill rod, and a spring is installed on the circumferential surface of the drill rod to play a buffering role during rotary drilling operations.

[0011] Preferably, a fixing ring is fixedly installed on the inner upper end of the slag box, the fixing ring is penetrated by the drill rod and is rotatably connected, and the contact surface between the fixing ring and the drill rod is provided with a bearing.

[0012] The utility model is beneficial in that:

[0013] The utility model provides a bored pile device. In order to solve the potential safety hazard of a follower frame when a rotary drilling machine is performing a bored pile operation, a lifting cylinder is added above the follower frame for auxiliary movement, thereby improving the safety of the follower frame. The cutter head below the rotary drilling tool is usually integrated with the slag box, which is relatively cumbersome when replacing the drilling tool. By changing the cutter head below to a detachable double-group cutter head, the replacement of the drilling tool is convenient, and the efficiency of rotary drilling is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is an isometric view of the whole;

[0016] Figure 2 Second isometric view of the whole;

[0017] Figure 3 Left view of the whole;

[0018] Figure 4 Isometric view of the lifting structure;

[0019] Figure 5 Isometric view of the rotary drilling structure;

[0020] In the figure: 1, mast square box; 2, upper connecting ring; 3, pulley frame; 4, pulley; 5, rotating shaft; 6, sealed swivel; 7, drill pipe; 8, power head; 9, rotating body; 10, stepped drill pipe; 11, spring; 12, slag box; 13, lifting oil cylinder; 14, connecting piece; 15, follower frame; 16, fixed ring; 17, central rotating shaft; 18, rotary drilling bit; 19, auxiliary drill bit; 20, steel wire rope. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-5 As shown, a bored cast-in-place pile device includes a mast square box 1. An upper connecting ring 2 is fixedly installed on the surface of the mast square box 1. The lifting oil cylinder 13 penetrates through the middle of the upper connecting ring 2 and is fixedly installed. A bearing is sleeved on the contact surface between the upper connecting ring 2 and the lifting oil cylinder 13. The bottom of the lifting oil cylinder 13 is horizontally penetrated and rotatably installed by a rotating shaft 51. Two sets of connecting pieces 14 are parallelly sleeved on both sides of the circumferential surface of the rotating shaft 51. A follower frame 15 is assembled in the middle of the surface of the mast square box 1. The follower frame 15 is fixedly connected to the connecting piece 14. Two rotary drilling bits 18 are provided at the bottom of the slag box 12. The rotary drilling bits 18 are rotatably connected through the drill pipe 7. An auxiliary drill bit 19 is rotatably installed at the bottom of the drill pipe 7.

[0023] During operation, the follower frame 15 is lifted and lowered on the surface of the drill mast box 1, and the upper lifting cylinder 13 cooperates with the follower frame 15 to extend and retract. The gas rod is fixed on the top of the follower frame through a group of connecting parts 14, providing a stable and anti-slip effect. The connecting ring 2 on the top of the lifting cylinder 13 is fixed to the surface of the drill mast box 1 and does not move, which plays a stabilizing role. When the slag box 12 rotates, the fixed ring 16 assembled inside will rotate synchronously. The rotary drilling cutter head 18 is connected to the fixed ring 16 through the central rotating shaft 17. When the fixed ring 16 rotates, the two groups of rotary drilling cutter heads 18 will rotate together, and cooperate with the auxiliary drill bit 19 below to complete the rotary drilling operation of bored piles on the ground.

[0024] A pulley frame 3 is rotatably mounted on the top of the drill mast box 1, and two sets of rotating shafts 51 are rotatably mounted on the top of the pulley frame 3. The two sets of pulleys 4 are rotatably mounted on the middle of the rotating shafts 51, and the two sets of pulleys 4 are connected by a wire rope 20.

[0025] During operation, the steel wire rope 20 is in the surface grooves of the two groups of pulleys 4. As the steel wire rope 20 moves up and down, it drives the two groups of pulleys 4 to rotate, thereby completing the overall lifting operation.

[0026] A stabilizing frame 5 is fixedly installed on the upper surface of the drill mast square box 1, and a drill rod 7 is penetrated through the middle of the front end of the stabilizing frame 5 for rotation. A bearing is mounted on the circumferential surface of the drill rod 7. A sealing lifter 6 is rotatably installed below the stabilizing frame 5, and the sealing lifter 6 is vertically penetrated by the drill rod 7. A bearing is mounted on the contact surface between the sealing lifter 6 and the drill rod 7.

[0027] During operation, the enclosed lifter 6 is fixed on the stabilizing frame 5. When the drill rod 7 rotates, the enclosed lifter 6 rotates in coordination and performs synchronous rotation. The stabilizing frame 5 prevents the drill rod 7 from deflecting. At the same time, the enclosed lifter 6 cooperates with the lifting operation below.

[0028] The surface of the follower frame 15 is fixedly mounted with a rotating body 9, the middle part of the rotating body 9 is fitted with a power head 8, the drill rod 7 penetrates the power head 8, and the bottom of the power head 8 is rotatably mounted with a graded drill rod 10. The graded drill rod 10 is rotatably connected with the slag box 12, the drill rod 7 is assembled in the graded drill rod 10, and a spring 11 is installed on the circumferential surface of the drill rod 7. A fixing ring 16 is fixedly mounted on the upper end of the inner part of the slag box 12, the fixing ring 16 is penetrated and rotatably connected with the drill rod 7, and the contact surface between the fixing ring 16 and the drill rod 7 is fitted with a bearing.

[0029] During operation, the rotating body 9 is fixed on the surface of the follower frame 15 and remains stationary. It adjusts its own height according to the follower frame 15. A power head 8 is sleeved inside the rotating body 9. While the power head 8 rotates, it drives the drill pipe 7 to rotate. At the same time, the grading drill pipe 10 installed at the bottom of the power head 8 will rotate synchronously. The grading drill pipe 10 is installed on the top of the slag box 12. While the grading drill pipe 10 rotates, it drives the lower slag box 12 to rotate synchronously. While the slag box 12 rotates, the fixed ring 16 fixedly installed inside the slag box 12 will rotate synchronously.

[0030] Working principle: The follower frame 15 performs lifting and lowering operations on the surface of the mast square box 1. The upper lifting oil cylinder 13 cooperates with the follower frame 15 to expand and contract. The air rod is fixed above the follower frame through a set of connecting pieces 14 to provide a stable effect and prevent slipping. The upper connecting ring 2 at the top of the lifting oil cylinder 13 is fixed on the surface of the mast square box 1 and plays a stabilizing role. When the slag box 12 rotates, the fixed ring 16 assembled inside will rotate synchronously. The rotary cutting head 18 is connected to the fixed ring 16 through the central rotating shaft 17. While the fixed ring 16 rotates, the two groups of rotary cutting heads 18 will rotate together to cooperate with the auxiliary drill bit 19 below to complete the rotary drilling operation of the bored cast-in-place pile on the ground.

[0031] The steel wire rope 20 is in the surface grooves of the two groups of pulleys 4. As the steel wire rope 20 moves up and down, it drives the rotation of the two groups of pulleys 4 to cooperate to complete the overall lifting operation. The sealed elevating device 6 is fixed on the stabilizing frame 5. When the drill pipe 7 rotates, the sealed elevating device 6 rotates in cooperation and rotates synchronously. The stabilizing frame 5 prevents the drill pipe 7 from deflecting, and at the same time, the sealed elevating device 6 cooperates with the lifting operation below.

[0032] The rotating body 9 is fixed on the surface of the follower frame 15 and remains stationary. It adjusts its own height according to the follower frame 15. A power head 8 is sleeved inside the rotating body 9. While the power head 8 rotates, it drives the drill pipe 7 to rotate. At the same time, the grading drill pipe 10 installed at the bottom of the power head 8 will rotate synchronously. The grading drill pipe 10 is installed on the top of the slag box 12. While the grading drill pipe 10 rotates, it drives the lower slag box 12 to rotate synchronously. When the slag box 12 rotates, the fixed ring 16 assembled inside will rotate synchronously. The rotary cutting head 18 is connected to the fixed ring 16 through the central rotating shaft 17. While the fixed ring 16 rotates, the two groups of rotary cutting heads 18 will rotate together to cooperate with the auxiliary drill bit 19 below to complete the rotary drilling operation of the bored cast-in-place pile on the ground.

[0033] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0034] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A bored pile device, characterized in that: The invention comprises a drill mast box (1), wherein an upper connecting ring (2) is fixedly mounted on the surface of the drill mast box (1), a lifting cylinder (13) is fixedly mounted by penetrating the middle of the upper connecting ring (2), a bearing is mounted on the contact surface between the upper connecting ring (2) and the lifting cylinder (13), a rotating shaft (51) is transversely penetrated at the bottom of the lifting cylinder (13) for rotational installation, two groups of connecting pieces (14) are parallelly mounted on both sides of the circumferential surface of the rotating shaft (51), a follower frame (15) is mounted at the middle of the surface of the drill mast box (1), the follower frame (15) is fixedly connected to the connecting piece (14), two groups of rotary cutting heads (18) are arranged at the bottom of the slag box (12), the rotary cutting heads (18) are penetrated by the drill rod (7) for rotational connection, and an auxiliary drill bit (19) is rotationally mounted at the bottom of the drill rod (7).

2. A bored pile device according to claim 1, characterized in that: A pulley frame (3) is rotatably mounted on the top of the drill mast box (1), two sets of rotating shafts (51) are rotatably mounted on the top of the pulley frame (3), the two sets of pulleys (4) are rotatably mounted on the middle of the rotating shafts (51), and the two sets of pulleys (4) are connected by a steel wire rope (20).

3. A bored pile device according to claim 1, characterized in that: A stabilizing frame (5) is fixedly mounted on the upper surface of the drill mast box (1); a drill rod (7) penetrates through the middle of the front end of the stabilizing frame (5) for rotation; a bearing is sleeved on the circumferential surface of the drill rod (7); a sealing lifter (6) is rotatably mounted below the stabilizing frame (5); the sealing lifter (6) is vertically penetrated by the drill rod (7); and a bearing is sleeved on the contact surface between the sealing lifter (6) and the drill rod (7).

4. A bored pile device according to claim 1, characterized in that: A rotating body (9) is fixedly mounted on the surface of the follower frame (15), a power head (8) is sleeved on the middle of the rotating body (9), the drill rod (7) passes through the power head (8), and a graded drill rod (10) is rotatably mounted on the bottom of the power head (8).

5. A bored pile device according to claim 4, characterized in that: The grading drill rod (10) is rotatably connected to the slag box (12), a drill rod (7) is installed inside the grading drill rod (10), and a spring (11) is installed on the circumferential surface of the drill rod (7).

6. A bored pile device according to claim 1, characterized in that: A fixing ring (16) is fixedly mounted on the inner upper end of the slag box (12); the fixing ring (16) is rotatably connected to the drill rod (7) through it; and a bearing is sleeved on the contact surface between the fixing ring (16) and the drill rod (7).

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