Prefabricated tubular pile core cleaning device

Abstract

The utility model discloses a prefabricated tubular pile core cleaning device which comprises an outer sleeve arranged on a prefabricated tubular pile head in a sleeving mode, and a plurality of positioning protrusions are arranged on the inner wall of the outer sleeve in an inward protruding mode. The device further comprises a plurality of vertical stand rods arranged on an opening in the top of the outer sleeve, the tops of all the vertical stand rods are connected to the lower surface of a horizontal mounting plate, a vertical driving motor is further arranged in the middle of the horizontal mounting plate, an output shaft of the driving motor is detachably connected to a driving rotating rod, and a spiral blade is further arranged outside the driving rotating rod in a winding mode. A horizontal tool bit disc is further arranged at the bottom; the device further comprises a plurality of vertical supporting rods connected to the bottom end of the outer sleeve, and the bottom ends of the vertical supporting rods are connected to the supporting ring. According to the device, the outer sleeve serves as a guide part, it is guaranteed that the driving rotating rod and the tool bit disc at the bottom of the driving rotating rod are located at the axis of the prefabricated pipe pile all the time, and the problem that the strength of the prefabricated pipe pile is affected due to scraping of the inner wall of the prefabricated pipe pile can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of prefabricated pipe pile construction devices, in particular to a prefabricated pipe pile core cleaning device. Background Art

[0002] When the prefabricated pipe pile is sunk into the soil (rock) and during the excavation of the foundation pit, a large amount of silty soil will be blocked at the pile head. When the pipe pile is anchored to the building foundation, it is necessary to pour concrete core filling in the pile hole within a certain depth below the pile head to ensure a reliable connection between the poured concrete and the inner wall of the pipe pile. Before pouring concrete, the silt soil in the pile head and the area below where concrete needs to be poured must be cleaned.

[0003] The Chinese patent with the authorization announcement number CN216999720U discloses a pile core soil cleaning device for prefabricated hollow pipe piles, including a handle bar, a standard section bar and a soil cleaning rod; the handle bar includes a support rod and a handle welded to one end of the support rod, and the other end of the support rod is provided with an external thread; the soil cleaning rod includes a connecting rod, a spiral blade and a loosening piece, one end of the connecting rod is threadedly connected to the loosening piece, the other end of the connecting rod is threadedly connected to one end of the standard section bar, the other end of the standard section bar is threadedly connected to the handle rod, and the spiral blade rotates and extends around the connecting rod and is welded to the side wall of the connecting rod. Although this application can clean soil layers of different depths, it is necessary to manually adjust the direction of the device when using it, and adjusting the direction will easily cause the soil cleaning rod to scrape the inner wall of the prefabricated pipe pile; at the same time, the loosening piece set at the bottom of the device is a triangular iron piece or a conical iron piece, and the overall soil breaking effect is not good.

[0004] Therefore, a prefabricated pipe pile core cleaning device is proposed to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is that the existing prefabricated hollow pipe pile core cleaning device needs to be manually adjusted in direction when in use, which easily causes the cleaning rod to scrape the inner wall of the prefabricated pipe pile, and the overall soil breaking effect is not good when the loosening piece is a triangular iron piece or a conical iron piece.

[0006] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows:

[0007] A prefabricated pipe pile core cleaning device, comprising an outer sleeve sleeved on the prefabricated pipe pile head and having openings at both ends, wherein the upper inner wall of the outer sleeve has a plurality of positioning protrusions protruding radially inwardly; and also comprising a plurality of vertical upright rods arranged on the top opening of the outer sleeve, wherein the tops of all the vertical upright rods are connected to the lower surface of a horizontal mounting plate, wherein a vertical driving motor is also arranged in the middle of the horizontal mounting plate, wherein the output shaft of the driving motor is detachably connected to a driving rotating rod, wherein a spiral blade is also wound around the outside of the driving rotating rod, and a horizontal cutter head disk is also arranged at the bottom;

[0008] It also comprises a plurality of vertical struts connected to the bottom end of the outer sleeve, wherein the bottom ends of the vertical struts are connected to a support ring placed on the ground outside the pile head of the prefabricated pipe pile.

[0009] Particularly, a threaded section is provided at the end of the output shaft of the driving motor, and a threaded groove matching the threaded section is provided at the top of the driving rotating rod.

[0010] Furthermore, it also includes a standard section for lengthening the driving rotating rod, the standard section includes a central rotating shaft and a spiral blade wound around the rotating shaft, a threaded groove is provided at the top of the rotating shaft, and a threaded protrusion is provided at the bottom of the rotating shaft.

[0011] In particular, the end of the output shaft of the driving motor is provided with a connecting protrusion with a diameter smaller than the diameter of the output shaft, and the top of the driving rotating rod is provided with a connecting groove matching it. The connecting protrusion and the connecting groove are provided with mutually matching plug-in screw holes, which are locked by horizontally screwing a plug-in bolt into the plug-in screw hole.

[0012] Furthermore, it also includes a standard section for lengthening the driving rotating rod, the standard section includes a central rotating shaft and a spiral blade wound around the rotating shaft, a connecting groove is provided at the top of the rotating shaft, and a connecting protrusion is provided at the bottom of the rotating shaft.

[0013] Particularly, the cutter head disc and the driving rotating rod are detachably connected via threads or snap fasteners.

[0014] In particular, the cutter head disc comprises a disc body with a diameter smaller than the inner diameter of the prefabricated pipe pile, and a plurality of evenly distributed cutting bits are arranged on the lower surface of the disc body.

[0015] Particularly, the vertical support rod is a retractable electric push rod or a hydraulic cylinder.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects: the utility model as a whole uses the outer sleeve as a guide component to ensure that the driving rod and the cutter disc at the bottom of the driving rod are always located at the axis of the prefabricated pipe pile, which can effectively avoid scratching the inner wall of the prefabricated pipe pile and affecting the strength of the prefabricated pipe pile; at the same time, the cutter disc cooperates with the spiral blades above to comprehensively and thoroughly clean the soil inside the prefabricated pipe pile, ensuring the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the device of the utility model.

[0018] Figure 2 Schematic diagram of the connection relationship between the standard section, the driving rod and the output shaft in one embodiment.

[0019] Figure 3 Schematic diagram of the connection relationship between the standard section, the driving rod and the output shaft in another embodiment.

[0020] The meanings of the numbers in the figure are as follows: prefabricated pipe pile head—1; outer sleeve—2; positioning protrusion—3; vertical upright pole—4; horizontal mounting plate—5; driving motor—6; driving rotating rod—7; spiral blade—8; cutter head disc—9; vertical support rod—10; supporting ring—11; rotating shaft—12; threaded groove—13; threaded protrusion—14; connecting protrusion—15; connecting groove—16; plug-in bolt—17. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the accompanying drawings in the embodiments of the utility model, so as to have a further understanding of the concept of the utility model, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought about.

[0022] like Figure 1 As shown, a prefabricated pipe pile core cleaning device comprises an outer sleeve 2 which is sleeved on a prefabricated pipe pile head 1 and has openings at both ends, wherein the upper inner wall of the outer sleeve 2 radially inwardly protrudes with a plurality of positioning protrusions 3; and further comprises a plurality of vertical upright rods 4 which are arranged on the top opening of the outer sleeve 2, wherein the tops of all the vertical upright rods 4 are connected to the lower surface of a horizontal mounting plate 5, wherein a vertical driving motor 6 is further arranged in the middle of the horizontal mounting plate 5, wherein the output shaft of the driving motor 6 is detachably connected to a driving rotating rod 7, wherein a spiral blade 8 is further wound around the outside of the driving rotating rod 7, and a horizontal cutter head disc 9 is further arranged at the bottom;

[0023] It also includes a plurality of vertical struts 10 connected to the bottom end of the outer sleeve 2 , and the bottom ends of the vertical struts 10 are connected to a support ring 11 placed on the ground outside the prefabricated pipe pile head 1 .

[0024] In the utility model, the main working process is as follows: hoisted from top to bottom to the outside of the prefabricated pipe pile head 1 by external hoisting equipment, and slowly lowered after manual alignment during lowering to ensure that the prefabricated pipe pile head is just inside the outer sleeve 2, thereby playing a guiding and limiting role. The function of the retractable vertical strut 10 is to cooperate with the support ring 11 to prevent the device from deflecting when the cleaning operation needs to be suspended. Specifically, since the operation of the drive motor 6 usually causes the entire device to vibrate, if only the bottom foot is simply set, the uneven vibration may cause the entire device to deflect toward a certain side, thereby causing the drive rotating rod 7 to deflect, so that the cutter head disc 9 and the spiral blade 8 scrape the inner wall of the prefabricated pipe pile. The retractable vertical strut 10 is synchronously retracted. During the soil cleaning operation, the drive motor 7, that is, the entire device, is slowly lowered by the external hoisting device, the cutter head disc 9 cuts the compacted soil, and the spiral blade 8 takes the cut soil out of the prefabricated pipe pile. When the operation needs to be suspended, the length of the telescopic vertical support rod 10 is fixed to ensure that the support ring 11 evenly bears the overall weight of the device, which can effectively prevent the device axis from deflecting to the side, thereby preventing the device from deflecting due to the vibration of the drive motor 6. In this process, the role of the positioning protrusion 3 is to prevent the over-excavation phenomenon caused by the excessive descent of the outer sleeve 2.

[0025] As a preferred embodiment, a threaded section is provided at the end of the output shaft of the driving motor 6, and a threaded groove 13 matching the threaded section is provided at the top of the driving rotating rod 7.

[0026] In this embodiment, if Figure 2 As shown, a specific connection relationship between the output shaft of the driving motor 6 and the driving rod 7 is provided, specifically, a threaded connection is adopted to ensure quick installation and removal. It should be noted that since the driving rod 7 needs to rotate under load, special attention should be paid to the direction of the thread.

[0027] As a further embodiment, it also includes a standard section for lengthening the driving rotating rod 7, wherein the standard section includes a central rotating shaft 12 and a spiral blade 8 wound around the rotating shaft 12, a threaded groove 13 is provided at the top of the rotating shaft 12, and a threaded protrusion 14 is provided at the bottom of the rotating shaft 12.

[0028] In this embodiment, a specific standard section structure is provided, in which the standard sections, the standard sections and the driving rotating rod 7, and the standard sections and the output shaft of the driving motor 6 are connected by threaded connections to match the depth of the prefabricated pipe piles to be cleaned, thereby effectively speeding up the cleaning speed and shortening the construction period.

[0029] As a preferred embodiment, Figure 3As shown, the end of the output shaft of the driving motor 6 is provided with a connecting protrusion 15 with a diameter smaller than the output shaft diameter, and the top of the driving rotating rod 7 is provided with a connecting groove 16 matching it. The connecting protrusion 15 and the connecting groove 16 are provided with mutually matching plug-in screw holes, which are locked by a plug-in bolt 17 that is laterally screwed into the plug-in screw hole.

[0030] In this embodiment, another specific connection relationship is provided, in which the output shaft of the driving motor 6 and the driving rotating rod 7 are connected by means of sleeve connection and locking by means of plug-in bolts 17. On the one hand, this can ensure the reliability of the connection, and on the other hand, it can also meet the requirements of quick installation and disassembly when lengthening the driving rotating rod 7.

[0031] As a further embodiment, it also includes a standard section for lengthening the driving rotating rod 7, wherein the standard section includes a central rotating shaft 12 and a spiral blade 8 wound around the rotating shaft 12, a connecting groove 16 is provided at the top of the rotating shaft 12, and a connecting protrusion 15 is provided at the bottom of the rotating shaft 12.

[0032] In this embodiment, another specific standard section structure is provided, in which the standard sections, the standard sections and the driving rotating rod 7, and the standard sections and the output shaft of the driving motor 6 are connected by mutually socketing and then locked by plug-in bolts 17, so as to ensure quick installation and disassembly while ensuring the connection strength.

[0033] As a preferred embodiment, the cutter head disc 9 and the driving rotating rod 7 are detachably connected via threads or snap fasteners.

[0034] In this embodiment, since the cutter disc 9 is usually a consumable part, in order to facilitate the disassembly, cleaning, maintenance and replacement of the cutter disc 8, the cutter disc 9 and the driving rotating rod 7 are connected by a detachable structure. Generally, a threaded structure or a snap-on structure is adopted, and the specific connection method is a very mature existing technology, so it will not be described here.

[0035] As a preferred embodiment, the cutter head disc 9 comprises a disc body with a diameter smaller than the inner diameter of the prefabricated pipe pile, and a plurality of evenly distributed cutting heads are provided on the lower surface of the disc body.

[0036] In this embodiment, a specific structure of a cutter disc 9 is provided, the main structure of which is similar to the cutter head of a shield machine. The disc body provides support for the cutter head, and the cutting head is used to cut the soil, which can effectively ensure the quality of soil cleaning.

[0037] As a preferred embodiment, the vertical support rod 10 is a retractable electric push rod or a hydraulic cylinder.

[0038] This embodiment provides a specific technical solution for the vertical support rod 10. When an electric push rod or a hydraulic cylinder is used, in addition to achieving the aforementioned established goals, it can also save the occupation of the external lifting device during the cleaning process, and at the same time, it can further ensure the uniformity of the force applied to the ground by the outer sleeve 2 along the support ring 11 in the vertical direction, thereby avoiding the outer sleeve 2 from tilting.

[0039] The words “connection” and “fixation” appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0040] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A prefabricated pipe pile core cleaning device, characterized in that: It comprises an outer sleeve (2) which is sleeved on the pile head (1) of a prefabricated pipe pile and has openings at both ends, wherein the upper inner wall of the outer sleeve (2) is provided with a plurality of positioning protrusions (3) protruding radially inwardly; it also comprises a plurality of vertical upright rods (4) arranged on the top opening of the outer sleeve (2), wherein the tops of all the vertical upright rods (4) are connected to the lower surface of a horizontal mounting plate (5), wherein a vertical driving motor (6) is also arranged in the middle of the horizontal mounting plate (5), wherein the output shaft of the driving motor (6) is detachably connected to a driving rotating rod (7), wherein a spiral blade (8) is also wound around the outside of the driving rotating rod (7), and a horizontal cutter head disc (9) is also arranged at the bottom; It also comprises a plurality of vertical support rods (10) connected to the bottom end of the outer sleeve (2), wherein the bottom ends of the vertical support rods (10) are connected to a support ring (11) placed on the ground outside the prefabricated pipe pile head (1).

2. A prefabricated pipe pile core cleaning device as claimed in claim 1, characterized in that: The output shaft end of the driving motor (6) is provided with a threaded section, and the top of the driving rotating rod (7) is provided with a threaded groove (13) matching the threaded section.

3. A prefabricated pipe pile core cleaning device as claimed in claim 2, characterized in that: It also includes a standard section for lengthening the driving rotating rod (7), the standard section including a rotating shaft (12) in the middle and a spiral blade (8) wound around the rotating shaft (12), a thread groove (13) is provided at the top of the rotating shaft (12), and a thread protrusion (14) is provided at the bottom of the rotating shaft (12).

4. A prefabricated pipe pile core cleaning device as claimed in claim 1, characterized in that: The end of the output shaft of the driving motor (6) is provided with a connecting protrusion (15) having a diameter smaller than that of the output shaft, and the top of the driving rotating rod (7) is provided with a connecting groove (16) matching therewith, and the connecting protrusion (15) and the connecting groove (16) are provided with mutually matching plug-in screw holes, which are locked by means of a plug-in bolt (17) screwed laterally into the plug-in screw hole.

5. A prefabricated pipe pile core cleaning device as claimed in claim 4, characterized in that: It also includes a standard section for lengthening the driving rotating rod (7), the standard section including a rotating shaft (12) in the middle and a spiral blade (8) wound around the rotating shaft (12), a connecting groove (16) being provided at the top of the rotating shaft (12), and a connecting protrusion (15) being provided at the bottom of the rotating shaft (12).

6. A prefabricated pipe pile core cleaning device as claimed in claim 1, characterized in that: The cutter head disc (9) and the driving rotating rod (7) are detachably connected via threads or snap fasteners.

7. A prefabricated pipe pile core cleaning device as claimed in claim 1, characterized in that: The cutter head disc (9) comprises a disc body with a diameter smaller than the inner diameter of the prefabricated pipe pile, and a plurality of evenly distributed cutting heads are provided on the lower surface of the disc body.

8. The prefabricated pipe pile core cleaning device according to claim 1, characterized in that: The vertical support rod (10) is a retractable electric push rod or a hydraulic cylinder.

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