Guide pipe for cast-in-situ bored pile

Abstract

The utility model relates to the technical field of cast-in-situ bored piles, in particular to a cast-in-situ bored pile guide pipe which comprises a foundation, a bottom plate is arranged on the upper surface of the foundation, a guide pipe insertion hole is formed in the upper surface of the bottom plate, a guide pipe body is arranged in the guide pipe insertion hole, and a funnel is arranged at the top end of the guide pipe body. A pile hole is formed in the upper surface of the foundation, and a positioning mechanism used for positioning the guide pipe body is arranged on the upper surface of the bottom plate. According to the guide pipe for the cast-in-situ bored pile, the positioning mechanism is arranged in the guide pipe for the cast-in-situ bored pile, all structures in the positioning mechanism are matched with one another, and the guide pipe body in a pile hole is positioned by arranging a positioning support, a driving motor, a bidirectional lead screw, a nut sleeve, a connecting block, a connecting rod and an arc-shaped plate; the guide pipe body is prevented from skewing and position deviation in the concrete pouring process, it is guaranteed that the guide pipe body is in a vertical state, and the pouring effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of bored cast-in-place piles, and in particular to a conduit for bored cast-in-place piles. Background Art

[0002] Bored cast-in-place piles refer to piles that are made by forming pile holes in the foundation soil at the construction site through means such as machinery, steel pipe squeezing or manual excavation, and placing steel cages inside and pouring concrete. Depending on the hole-forming method, cast-in-place piles can be divided into several categories, such as bored cast-in-place piles and excavated cast-in-place piles. During the construction of bored cast-in-place piles, holes are drilled first, then casings are buried in the holes, and finally cast-in-place piles are formed by pouring concrete in the casing. Before pouring concrete, a conduit needs to be placed in the casing to divert the concrete.

[0003] A Chinese patent discloses an underwater concrete pouring steel conduit for bored cast-in-place piles, comprising a pipe boot arranged at the bottom of the steel conduit, the pipe boot comprising a threaded steel sleeve and at least three arc-shaped valves arranged in a ring shape, wherein the threaded steel sleeve is connected to the steel conduit, a sealing rubber pad is arranged at the threaded connection between the steel conduit and the threaded steel sleeve, the arc-shaped valve is hinged to the bottom of the threaded steel sleeve, and a sealing rubber pad is also arranged between the arc-shaped valves, which can prevent the cement in the first batch of concrete of the bored cast-in-place pile from being washed away by water, reduce the mud and sediment at the bottom of the pile, thereby improving the bearing capacity of the bored cast-in-place pile and the quality of the pile body concrete, and extending the service life of the building.

[0004] The above patent improves the bearing capacity of bored cast-in-place piles and the quality of pile concrete, and extends the service life of the building. However, during the use of the conduit, no positioning structure is set for the conduit. The conduit will vibrate with the pumping device. The conduit is easy to tilt in the pile hole and cannot always maintain a vertical state, which affects the pouring of the bored cast-in-place piles. Therefore, a conduit for bored cast-in-place piles is proposed to solve the above problem. Utility Model Content

[0005] In view of the shortcomings of the prior art, the present application provides a catheter for bored cast-in-place piles, which has the advantage of high stability and solves the problem that during the use of the catheter, there is no positioning structure for the catheter, the catheter will vibrate with the pumping device, the catheter is easily skewed in the pile hole and cannot always maintain a vertical state, thus affecting the pouring of the bored cast-in-place piles.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a bored pile conduit, comprising a foundation, a bottom plate is arranged on the upper surface of the foundation, a conduit insertion hole is opened on the upper surface of the bottom plate, a conduit body is arranged inside the conduit insertion hole, a funnel is arranged at the top of the conduit body, a pile hole is opened on the upper surface of the foundation, and a positioning mechanism for positioning the conduit body is arranged on the upper surface of the bottom plate;

[0007] The positioning mechanism includes a driving member, a positioning member and a positioning bracket, the positioning bracket is vertically fixed to the upper surface of the base plate, the driving member is arranged on the right side of the positioning bracket and is used to position the catheter body, and the positioning member is arranged on the inner side of the positioning bracket and is used to limit the driving member.

[0008] By adopting this technical solution, the setting of the positioning mechanism prevents the catheter body from being skewed and shifted in position during the process of pouring concrete, ensuring that the catheter body clock is in a vertical state, thereby improving the pouring effect.

[0009] Furthermore, the driving component includes a driving motor, a bidirectional screw, two nut sleeves, two connecting blocks, two connecting rods and two arc plates. The driving motor is fixed on the right side of the positioning bracket, the right end of the bidirectional screw is fixed to the output shaft of the driving motor, the nut sleeve and the bidirectional screw are threadedly connected, the connecting block is fixed on the front side of the nut sleeve, the two connecting rods are respectively fixed on the opposite sides of the two connecting blocks, and the arc plate is fixed on the end of the connecting rod away from the connecting block.

[0010] By adopting this technical solution, the positioning of the catheter body is achieved, so that the catheter body is in a vertical state.

[0011] Furthermore, one end of the bidirectional screw rod away from the driving motor is rotatably connected to the inner side of the positioning bracket through a bearing, and the two nut sleeves are symmetrically distributed on the left and right sides of the longitudinal center axis of the positioning bracket.

[0012] Furthermore, the bidirectional screw rod is located at the rear side of the catheter body.

[0013] Furthermore, a guide hole for the catheter body to pass through is opened on the upper surface of the positioning bracket, and the longitudinal section of the positioning bracket is U-shaped.

[0014] By adopting this technical solution, the setting of the guide hole plays a role in guiding and positioning the catheter body.

[0015] Furthermore, the positioning member includes a limit frame, a limit sleeve and a fixed block, the limit frame is fixed on the inner side of the positioning bracket, the limit sleeve is slidably connected to the outer surface of the limit frame, the fixed block is fixed on the lower surface of the limit sleeve, and the fixed block is fixed on the upper surface of the nut sleeve.

[0016] By adopting this technical solution, when the nut sleeve moves, the fixed block and the limiting sleeve are driven to move simultaneously. At this time, the limiting sleeve slides on the outer surface of the limiting frame to limit the nut sleeve.

[0017] Furthermore, the number of the limiting frames is two, and the two limiting frames are symmetrically distributed on the left and right sides of the longitudinal center axis of the positioning bracket.

[0018] Furthermore, the limiting sleeve is in the shape of a cylinder which is hollow inside and missing on both the left and right sides.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0020] The guide tube for bored cast-in-place piles is provided with a positioning mechanism. Through the mutual cooperation between the structures in the positioning mechanism, by providing a positioning bracket, a driving motor, a bidirectional screw rod, a nut sleeve, a connecting block, a connecting rod and an arc plate, the positioning of the guide tube body in the pile hole is achieved, and the guide tube body is prevented from being skewed and shifted in position during the pouring of concrete, and the guide tube body is ensured to be in a vertical state, thereby improving the pouring effect, and solving the problem that during the use of the guide tube, a positioning structure for the guide tube is not provided, the guide tube will vibrate with the pumping device, the guide tube is easily skewed in the pile hole and cannot always maintain a vertical state, thereby affecting the pouring of the bored cast-in-place piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of this application;

[0022] Figure 2 For this application Figure 1 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 3 This is a schematic diagram of the catheter body and base plate structure of this application;

[0024] Figure 4 A schematic diagram of the positioning mechanism for this application;

[0025] Figure 5 For this application Figure 4 Enlarged schematic diagram of the structure at point B in the middle.

[0026] In the figure: 1, foundation; 2, bottom plate; 3, catheter insertion hole; 4, catheter body; 5, funnel; 6, pile hole; 7, positioning mechanism; 71, positioning bracket; 701, driving motor; 702, bidirectional screw rod; 703, nut sleeve; 704, connecting block; 705, connecting rod; 706, arc plate; 707, limit frame; 708, limit sleeve; 709, fixing block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] See also Figure 1-3 A bored pile conduit in this embodiment includes a foundation 1, a bottom plate 2 is provided on the upper surface of the foundation 1, a conduit insertion hole 3 is provided on the upper surface of the bottom plate 2, a conduit body 4 is provided inside the conduit insertion hole 3, and a funnel 5 is provided at the top of the conduit body 4. During use, an external pumping device transports concrete to the funnel 5, and the concrete eventually enters the conduit body 4 to form a bored pile. A pile hole 6 is provided on the upper surface of the foundation 1, and a positioning mechanism 7 for positioning the conduit body 4 is provided on the upper surface of the bottom plate 2.

[0029] It should be noted that the components of the present application are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0030] See also Figure 4-5 In order to prevent the catheter body 4 from being skewed and shifted during the process of pouring concrete, the positioning mechanism 7 in this embodiment includes a driving member, a positioning member and a positioning bracket 71. The positioning bracket 71 is vertically fixed to the upper surface of the base plate 2. The driving member is arranged on the right side of the positioning bracket 71 and is used to position the catheter body 4. The positioning member is arranged on the inner side of the positioning bracket 71 and is used to limit the driving member.

[0031] The driving component includes a driving motor 701, a bidirectional screw rod 702, two nut sleeves 703, two connecting blocks 704, two connecting rods 705 and two arc plates 706. The driving motor 701 is fixed to the right side of the positioning bracket 71. The right end of the bidirectional screw rod 702 is fixed to the output shaft of the driving motor 701. The nut sleeve 703 and the bidirectional screw rod 702 are threadedly connected. The connecting block 704 is fixed to the front side of the nut sleeve 703. The two connecting rods 705 are respectively fixed on the opposite sides of the two connecting blocks 704. The arc plate 706 is fixed to the end of the connecting rod 705 away from the connecting block 704. The outer surface of the bidirectional screw rod 702 is distributed with two threads in opposite directions.

[0032] One end of the bidirectional screw rod 702 away from the driving motor 701 is rotatably connected to the inner side of the positioning bracket 71 through a bearing, and two nut sleeves 703 are symmetrically distributed on the left and right sides of the longitudinal center axis of the positioning bracket 71.

[0033] The bidirectional screw rod 702 is located at the rear side of the catheter body 4. The upper surface of the positioning bracket 71 is provided with a guide hole for the catheter body 4 to pass through. The guide hole plays a role in positioning and guiding the catheter body 4. The longitudinal section of the positioning bracket 71 is U-shaped.

[0034] The positioning member includes a limit frame 707, a limit sleeve 708 and a fixed block 709. The limit frame 707 is fixed on the inner side of the positioning bracket 71, the limit sleeve 708 is slidably connected to the outer surface of the limit frame 707, the fixed block 709 is fixed on the lower surface of the limit sleeve 708, and the fixed block 709 is fixed on the upper surface of the nut sleeve 703.

[0035] When the nut sleeve 703 moves, the fixing block 709 and the limiting sleeve 708 are driven to move simultaneously. At this time, the limiting sleeve 708 slides on the outer surface of the limiting frame 707 to limit the nut sleeve 703 .

[0036] There are two limit frames 707 , which are symmetrically distributed on the left and right sides of the longitudinal center axis of the positioning bracket 71 . The limit sleeve 708 is shaped like a cylinder with a hollow interior and missing left and right sides.

[0037] The working principle of the above embodiment is:

[0038] In the technical field of bored pile, in actual use, firstly, a pile hole 6 is drilled on the foundation 1, and then the base plate 2 is installed on the foundation 1. After the base plate 2 is installed, the catheter body 4 is inserted into the guide hole on the positioning bracket 71, and the catheter body 4 is inserted into the pile hole 6 drilled in advance through the guide hole and the catheter insertion hole 3. After the catheter body 4 is placed, the drive motor 701 is started, and the output shaft of the drive motor 701 starts to rotate, driving the bidirectional screw rod 702 to start rotating, and the nut sleeve 703 moves toward the direction close to the catheter body 4 with the rotation of the bidirectional screw rod 702. The movement of the nut sleeve 703 drives the connecting block 704, the connecting rod 705 and the arc plate 706 to move toward the direction close to the catheter body 4. With the movement of the arc plate 706, the arc plates 706 on the left and right sides clamp the catheter body 4, and then the drive motor 701 is turned off. At this time, the positioning of the catheter body 4 is realized, so that the catheter body 4 is in a vertical state, and then the concrete is transported to the funnel 5 through the external pumping device, and finally the concrete enters the interior of the catheter body 4 to form a cast-in-place pile.

Claims

1. A guide tube for bored piles, comprising a foundation (1), characterized in that: The upper surface of the foundation (1) is provided with a bottom plate (2), the upper surface of the bottom plate (2) is provided with a catheter insertion hole (3), a catheter body (4) is provided inside the catheter insertion hole (3), a funnel (5) is provided at the top of the catheter body (4), a pile hole (6) is provided on the upper surface of the foundation (1), and a positioning mechanism (7) for positioning the catheter body (4) is provided on the upper surface of the bottom plate (2); The positioning mechanism (7) comprises a driving member, a positioning member and a positioning bracket (71); the positioning bracket (71) is vertically fixed to the upper surface of the base plate (2); the driving member is arranged on the right side of the positioning bracket (71) and is used to position the catheter body (4); and the positioning member is arranged on the inner side of the positioning bracket (71) and is used to limit the driving member.

2. A bored pile guide pipe according to claim 1, characterized in that: The driving component comprises a driving motor (701), a bidirectional screw rod (702), two nut sleeves (703), two connecting blocks (704), two connecting rods (705) and two arc-shaped plates (706); the driving motor (701) is fixed to the right side of the positioning bracket (71); the right end of the bidirectional screw rod (702) is fixed to the output shaft of the driving motor (701); the nut sleeve (703) and the bidirectional screw rod (702) are threadedly connected; the connecting block (704) is fixed to the front side of the nut sleeve (703); the two connecting rods (705) are respectively fixed to opposite sides of the two connecting blocks (704); and the arc-shaped plate (706) is fixed to one end of the connecting rod (705) away from the connecting block (704).

3. A bored pile guide pipe according to claim 2, characterized in that: One end of the bidirectional screw rod (702) away from the driving motor (701) is rotatably connected to the inner side of the positioning bracket (71) via a bearing, and the two nut sleeves (703) are symmetrically distributed on the left and right sides of the longitudinal center axis of the positioning bracket (71).

4. A bored pile guide pipe according to claim 2, characterized in that: The bidirectional screw rod (702) is located on the rear side of the catheter body (4).

5. A bored pile guide pipe according to claim 2, characterized in that: A guide hole for the catheter body (4) to pass through is provided on the upper surface of the positioning bracket (71), and the longitudinal cross-section of the positioning bracket (71) is U-shaped.

6. A bored pile guide pipe according to claim 1, characterized in that: The positioning member comprises a limiting frame (707), a limiting sleeve (708) and a fixing block (709); the limiting frame (707) is fixed to the inner side of the positioning bracket (71); the limiting sleeve (708) is slidably connected to the outer surface of the limiting frame (707); the fixing block (709) is fixed to the lower surface of the limiting sleeve (708); and the fixing block (709) is fixed to the upper surface of the nut sleeve (703).

7. A guide tube for bored piles according to claim 6, characterized in that: The number of the limiting frames (707) is two, and the two limiting frames (707) are symmetrically distributed on the left and right sides of the longitudinal center axis of the positioning bracket (71).

8. A guide tube for bored piles according to claim 6, characterized in that: The limiting sleeve (708) is in the shape of a cylinder which is hollow inside and missing on both the left and right sides.

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