An underreaming shoe assembly with a support structure

Abstract

The utility model relates to the technical field of extrusion expansion supporting disc pile, especially to an extrusion expansion supporting disc pile assembly with supporting structure, which comprises an extrusion expansion assembly, and a supporting assembly is fixedly installed at the top of the extrusion expansion assembly. The device can add a telescopic metal support frame to the outer wall surface of the first cylinder wall, drive the drill bit to drill through the second rotating shaft, drive the hydraulic rod to lift the extrusion block through the hydraulic pump and pipeline, make the outer wall bottom of the first cylinder wall rotate to lift the reinforcing ring upward through the gear set transmission of the motor after the extrusion block extrudes the surrounding soil layer, and then drive the support frame to fold toward the surrounding soil layer for extrusion, so that the sliding block separates the support frame from the first cylinder wall and leaves it in the extrusion hole, provides a skeleton support for pouring concrete at the extrusion position, enhances the shear and tensile resistance of concrete, facilitates supporting complex load, reduces stress concentration and cracking risk, expands the use scenarios of the extrusion expansion supporting disc pile, and reduces the maintenance and repair cost in the later period.

Description

Technical Field

[0001] This utility model relates to the field of extrusion-expanded support pile technology, specifically to an extrusion-expanded support pile assembly with a support structure. Background Technology

[0002] Expanded-diameter piles are a type of variable-section pile formed by extruding branched or disc-shaped cavities into hard soil layers at different depths within the pile body using specialized hydraulic equipment, based on traditional straight-hole cast-in-place piles. The "support plate" structure expands the pile-soil contact area, transforming ordinary friction piles into multi-point friction end-bearing piles, significantly improving the bearing capacity of a single pile. Traditional expanded-diameter piles lack a supporting framework at the support plate, relying solely on the compressive strength of the concrete, resulting in weak tensile and shear resistance.

[0003] Chinese utility model patent CN218150755U discloses a tool for expanding pile boreholes, which includes "expanding the pile borehole wall by driving the expansion block, expansion sleeve and expansion arm, and then pouring concrete into the pouring channel to achieve the pouring of the pile hole below the bottom of the shell, and lifting the shell to pour concrete into the expansion area of ​​the pile borehole wall. By pouring concrete into the expansion area in time, it replaces the construction method of completing the construction of all expansion areas of the pile borehole wall before pouring, thereby reducing the situation of soil settlement caused by too many expansion areas of the pile borehole wall and soft soil, and improving the compliance rate of expansion holes"; however, its expansion block is relatively narrow, making it difficult to form holes when encountering hard rock layers, and the plain concrete filling of the support plate area leads to insufficient strength and easy hole collapse, which reduces construction efficiency and affects construction progress. Utility Model Content

[0004] The purpose of this invention is to provide a squeeze-expanded support pile assembly with a supporting structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a jacking and expanding pile assembly with a supporting structure, comprising a jacking and expanding assembly, wherein a supporting assembly is fixedly installed on the top of the jacking and expanding assembly;

[0006] The support assembly includes a first fixing block, one end of a hinge is fixedly installed on the outer wall of the first fixing block, a reinforcing ring is fixedly installed on the inner wall of the first fixing block, a support frame is fixedly installed on the other end of the hinge, a second fixing block is attached to the top of the support frame, a threaded rod is attached to the inner wall of the reinforcing ring, and a first gear is provided at the top of the threaded rod.

[0007] The outer wall of the first gear is meshed with a toothed belt, the inner wall of the toothed belt is meshed with a second gear, a first rotating shaft is fixedly installed through the center of the second gear, a first motor is fixedly installed on the top of the first rotating shaft, a top cover is fixedly installed on the top of the first motor, and a first cylindrical wall is installed on the bottom of the top cover.

[0008] The beneficial effects of this utility model are as follows: By adding a retractable metal support frame to the outer wall surface of the first cylinder wall, after drilling and expansion, the threaded rod is rotated to drive the bottom reinforcing ring of the outer wall of the first cylinder wall to rise upward, thereby driving the support frame to fold and expand towards the surrounding soil layer. The sliding block is used to detach the support frame from the first cylinder wall and leave it in the expansion hole, providing a skeleton support for the subsequent pouring of concrete at the expansion point, enhancing the shear and tensile strength of the concrete, facilitating the support of complex loads, reducing stress concentration and cracking risk, expanding the application scenarios of the expansion support pile, and also reducing the later maintenance and repair costs.

[0009] To ensure stable placement and power output of each power unit during the extrusion and expansion of the equipment:

[0010] As a further improvement to the above technical solution: a protective shell is fixedly installed on the outer wall surface of the first cylinder wall, a support plate is fixedly installed on the inner wall of the first cylinder wall, an insert block is fitted onto the inner wall of the first cylinder wall, an insert block is provided above the support plate, a reducer is fixedly installed on the top of the support plate, a second motor is fixedly installed on the top input end of the reducer, a third fixing block is provided on the right side of the insert block, a slider is fixedly installed on the bottom of the third fixing block, an annular internal gear is fitted onto the outer wall of the slider, a third gear meshes with the inner wall of the annular internal gear, the output end of a third motor is fixedly installed on the bottom of the third gear, and a reinforcing block is fixedly installed on the outer wall of the third motor.

[0011] The beneficial effects of this improvement are as follows: the third motor is fixed to the inner wall of the first cylinder wall by a reinforcing block, and the second motor and the reducer are connected in series on the support plate, which is also fixed to the inner wall of the first cylinder wall.

[0012] To ensure that the support frame remains within the expansion hole without obstructing the subsequent exit of the support platform from the expansion hole:

[0013] As a further improvement to the above technical solution: the extrusion expansion assembly includes a drill bit, on the top of which a second rotating shaft and a second cylinder wall are fixedly installed sequentially from the inside to the outside. A fourth fixing block is fixedly installed on the outer wall of the second rotating shaft. A hydraulic rod is fixedly installed on the outer wall of the fourth fixing block. An extrusion expansion block is provided at the end of the hydraulic rod away from the fourth fixing block. A pipe is fixedly installed on the outer wall of the hydraulic rod. A layer plate is installed through the outer wall of the pipe. A hydraulic cylinder is fixedly installed on the top of the layer plate. A hydraulic pump is fixedly installed on the outer wall of the hydraulic cylinder.

[0014] The beneficial effects of this improvement are as follows: With the above settings, the drill bit is driven to rotate by the second rotating shaft to drill holes in the soil layer, and the hydraulic cylinder drives the hydraulic rod to lift the extrusion block through the hydraulic pump and pipeline. The extrusion block extends and retracts to extrude and expand the surrounding soil and rocks.

[0015] To achieve the folding effect of the reinforcing ring driving the support frame to rise upwards along the threaded rod, concrete is poured into the extruded and expanded area to form a skeleton support:

[0016] As a further improvement to the above technical solution: the outer wall of the reinforcing ring is provided with a hole whose inner wall size is consistent with the outer wall size of the threaded rod, and the inner wall of the hole is provided with threads.

[0017] The beneficial effect of this improvement is that, through the above settings, the reinforcing ring gradually rises upward as the threaded rod rotates.

[0018] To enable the slider to move along the pre-cut groove on the inner ring gear:

[0019] As a further improvement to the above technical solution: the outer wall of the annular internal gear is provided with a groove whose inner wall size is consistent with the outer wall size of the slider.

[0020] The beneficial effects of this improvement are as follows: With the above settings, the slider rotates with the third gear driven by the third motor, thereby driving the inner ring gear to rotate, and then moves on the inner ring gear, and provides support for the inner ring gear.

[0021] To achieve the goal of fixing the second fixing block to the outer wall surface of the first cylinder wall via the insert block:

[0022] As a further improvement to the above technical solution: a reinforcing ring is fixedly installed on the inner wall of the second fixing block, and a groove with the same size as the insert block structure is opened on the outer wall of the second fixing block that is close to the first cylinder wall.

[0023] The beneficial effects of this improvement are as follows: through the above settings, the reinforcing ring attaches the second fixing block to the first cylinder wall, and the insert block limits the second fixing block to prevent it from sliding and falling off.

[0024] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main view of this utility model;

[0026] Figure 2 This is a schematic cross-sectional view of the extrusion expansion component of this utility model;

[0027] Figure 3 This is a schematic cross-sectional view of the support component of this utility model;

[0028] Figure 4 This utility model Figure 3 Schematic diagram of the cross section at point A in the middle.

[0029] In the diagram: 1. Extrusion assembly; 101. Drill bit; 102. Second rotating shaft; 103. Fourth fixing block; 104. Hydraulic rod; 105. Extrusion block; 106. Pipe; 107. Sheet plate; 108. Hydraulic cylinder; 109. Hydraulic pump; 1010. Second cylinder wall; 2. Support assembly; 201. First fixing block; 202. Hinge; 203. Support frame; 204. Second fixing block; 205. Reinforcing ring; 206. Threaded rod; 207. First gear ; 208. Toothed belt; 209. Second gear; 2010. First rotating shaft; 2011. First motor; 2012. Top cover; 2013. First cylinder wall; 2014. Protective shell; 2015. Support plate; 2016. Reducer; 2017. Second motor; 2018. Insert block; 2019. Third fixing block; 2020. Slider; 2021. Ring internal gear; 2022. Third gear; 2023. Third motor; 2024. Reinforcing block. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0031] Please see Figures 1 to 4 An extrusion-expanded pile assembly with a support structure includes an extrusion-expanding assembly 1, and a support assembly 2 is fixedly installed on the top of the extrusion-expanding assembly 1.

[0032] The support assembly 2 includes a first fixing block 201, one end of a hinge 202 is fixedly installed on the outer wall of the first fixing block 201, a reinforcing ring 205 is fixedly installed on the inner wall of the first fixing block 201, a support frame 203 is fixedly installed on the other end of the hinge 202, a second fixing block 204 is attached to the top of the support frame 203, a threaded rod 206 is attached to the inner wall of the reinforcing ring 205, and a first gear 207 is provided on the top of the threaded rod 206;

[0033] The outer wall of the first gear 207 is meshed with a toothed belt 208, and the inner wall of the toothed belt 208 is meshed with a second gear 209. A first rotating shaft 2010 is fixedly installed through the center of the second gear 209. A first motor 2011 is fixedly installed on the top of the first rotating shaft 2010. A top cover 2012 is fixedly installed on the top of the first motor 2011. A first cylinder wall 2013 is installed on the bottom of the top cover 2012.

[0034] In this embodiment, as Figure 1 , Figure 3 and Figure 4As shown, a protective shell 2014 is fixedly installed on the outer wall surface of the first cylinder wall 2013, a support plate 2015 is fixedly installed on the inner wall of the first cylinder wall 2013, an insert block 2018 is fitted onto the inner wall of the first cylinder wall 2013, an insert block 2018 is provided above the support plate 2015, a reducer 2016 is fixedly installed on the top of the support plate 2015, a second motor 2017 is fixedly installed on the top input end of the reducer 2016, a third fixing block 2019 is provided on the right side of the insert block 2018, a slider 2020 is fixedly installed on the bottom of the third fixing block 2019, an annular internal gear 2021 is fitted onto the outer wall of the slider 2020, a third gear 2022 meshes with the inner wall of the annular internal gear 2021, the output end of the third motor 2023 is fixedly installed on the bottom of the third gear 2022, and a reinforcing block 2024 is fixedly installed on the outer wall of the third motor 2023.

[0035] In this embodiment, as Figure 1 and Figure 2 As shown, the extrusion expansion assembly 1 includes a drill bit 101. A second rotating shaft 102 and a second cylinder wall 1010 are fixedly installed on the top of the drill bit 101 from the inside to the outside. A fourth fixing block 103 is fixedly installed on the outer wall of the second rotating shaft 102. A hydraulic rod 104 is fixedly installed on the outer wall of the fourth fixing block 103. An extrusion expansion block 105 is provided at one end of the hydraulic rod 104 away from the fourth fixing block 103. A pipe 106 is fixedly installed on the outer wall of the hydraulic rod 104. A shelf 107 is installed through the outer wall of the pipe 106. A hydraulic cylinder 108 is fixedly installed on the top of the shelf 107. A hydraulic pump 109 is fixedly installed on the outer wall of the hydraulic cylinder 108.

[0036] In this embodiment, as Figure 1 and Figure 3 As shown, the outer wall of the reinforcing ring 205 has a hole whose inner wall size is consistent with that of the outer wall of the threaded rod 206, and the inner wall of the hole is threaded.

[0037] In this embodiment, as Figure 3 and Figure 4 As shown, the outer wall of the annular internal gear 2021 has a groove whose inner wall size matches the outer wall size of the slider 2020.

[0038] In this embodiment, as Figure 1 , Figure 3 and Figure 4 As shown, a reinforcing ring 205 is fixedly installed on the inner wall of the second fixing block 204, and a groove with the same size as the inner wall and the structure of the insert block 2018 is opened on the outer wall of the second fixing block 204 that is close to the first cylinder wall 2013.

[0039] The working process of this expansion joint pile assembly with supporting structure is as follows:

[0040] First, the operator starts the second motor 2017. The second motor 2017 drives the second rotating shaft 102 to rotate via the reducer 2016. The output end of the second motor 2017 is mounted on the input end of the reducer 2016. The two are vertically connected in series and fixedly mounted on the support plate 2015. The second rotating shaft 102 passes through and fits against the center of the support plate 2015, and is mounted on the output end of the reducer 2016. The support plate 2015 is fixedly mounted on the inner wall of the first cylindrical wall 2013. The second rotating shaft 102 drives the drill bit 101 to rotate with the second cylindrical wall 1010. The drill bit 101 is fixedly mounted at the bottom of the second rotating shaft 102. The outer wall of the second cylindrical wall 1010 has an inner wall with dimensions and structure consistent with the outer wall of the second rotating shaft 102. The second cylinder wall 1010 is mounted on the drill bit 101. The outer wall of the second cylinder wall 1010 has several holes whose inner wall dimensions match the outer wall dimensions of the extrusion block 105. One end of the hydraulic rod 104 is fixedly mounted on the extrusion block 105, and the other end is fixedly mounted on the fourth fixing block 103. The fourth fixing block 103 is mounted on the second rotating shaft 102. A shelf plate 107 is fixedly mounted on the top of the fourth fixing block 103. A hydraulic pump 109 is fixedly mounted on a hydraulic cylinder 108, which is also fixedly mounted on the shelf plate 107. The two are connected by a pipe 106. The hydraulic pump 109 is connected to the hydraulic rod 104 via the pipe 106. The hydraulic pump 109 draws oil from the hydraulic cylinder 108 through the pipe 106. The hydraulic rod 104 is inserted into the pipe 106, and the hydraulic rod 104 extends accordingly, squeezing out the expansion block 105 at its end into the hole opened in the second cylinder wall 1010. As the drill bit 101 stops drilling and is retracted, the expansion block 105 uses the second rotating shaft 102 to rotate and expand the surrounding soil layer. After the expansion is completed, the drill bit 101 is lowered. The first cylinder wall 2013 is fixedly installed on the first cylinder wall 2013. The third motor 2023 is fixedly installed on the inner cylinder wall of the first cylinder wall 2013 through the reinforcing block 2024. The inner cylinder wall of the first cylinder wall 2013 is fitted with the second fixing block 204 and the first fixing block 201 corresponding to the outer cylinder wall. Each of these is equipped with a third motor 2023, a reinforcing block 2024, and a third tooth. The system comprises a wheel 2022, an internal ring gear 2021, a slider 2020, a third fixing block 2019, and an insert block 2018. The third gear 2022 is fixedly mounted on the output end of the third motor 2023. The outer wall of the internal ring gear 2021 has a groove whose inner wall size matches the outer wall structure of the slider 2020. The insert block 2018 is fixedly mounted on the third fixing block 2019, which is fixedly mounted on the top of the slider 2020. The slider 2020 fits against the internal ring gear 2021, and the slider 2020 and the third gear 2022 are connected through the internal ring gear 2021. The slider 2020 provides support for the third gear 2022, and the third gear 2022 limits the stroke of the slider 2020.A set of third motors 2023 located at the bottom of the inner wall of the first cylindrical wall 2013 is opened. The third motors 2023 drive the third gear 2022 at its output end to rotate to a certain extent. The third gear 2022 then drives the ring internal gear 2021 meshing with it to rotate. The slider 2020 slides along the arc-shaped groove of the ring internal gear 2021, and through the third fixing block 2019, drives the insert block 2018 to move telescopically along the hole opened in the first cylindrical wall 2013. The outer wall of the first cylindrical wall 2013 has several holes whose inner wall size matches the outer wall structure of the insert block 2018. The insert block 2018 is retracted into the hole, the first fixing block 201 that is attached to the outer wall surface of the first cylindrical wall 2013 is unlocked, and the second gear 209 is fixed. The first rotating shaft 2010 is fixedly mounted on the output end of the first motor 2011, which is fixedly mounted at the center of the bottom of the outer wall of the top cover 2012. Two second gears 209 are mounted on the first rotating shaft 2010, arranged parallel vertically and connected in series. A first gear 207 is fixedly mounted on the top of the threaded rod 206. The first gear 207 and the second gear 209 are connected by a toothed belt 208. A protective shell 2014 is provided on the outer side of the first gear 207. The outer walls of the first fixing block 201 and the second fixing block 204, close to the first cylindrical wall 2013, have grooves whose inner wall dimensions match those of the insert block 2018. The first cylindrical wall 2013... The outer wall of the protective shell 2014 covering the area has holes slightly larger than the structural size of the toothed belt 208 on its inner wall to facilitate the operation of the toothed belt 208. Reinforcing rings 205 are fixedly installed on the inner walls of both the first fixing block 201 and the second fixing block 204. Multiple sets of first gears 207 and threaded rods 206 are arranged around the central axis of the first cylinder wall 2013 on the reinforcing rings 205. Then, the first motor 2011 is started, driving the second gear 209 to rotate via the first rotating shaft 2010. The second gear 209 drives the first gear 207 via the meshing toothed belt 208. A protective shell 2014 is provided on the outer side of the first gear 207. The first gear 207 drives the rotating threaded rod 206 to rotate, thereby driving the reinforcing rings 205 and the first fixing block 201 to rotate... The device is lifted, and the first fixing block 201, via the hinge 202, drives the support frame 203 to fold upwards with the fixed second fixing block 204 as the origin. The support frame 203 gradually inserts into the expanded soil layer. Similarly, the outer wall of the second fixing block 204 has a hole whose inner wall size matches the outer wall structure of the threaded rod 206, and the inner wall of the hole is unthreaded. The insert block 2018 is retracted into the hole, releasing the second fixing block 204 that is attached to the outer wall surface of the first cylinder wall 2013. Then, the drill bit 101 is lifted, and the soil layer limits the support frame 203. Then, the first motor 2011 rotates in the opposite direction, rotating the threaded rod 206 through multiple gears. The threaded rod 206 disengages from the two reinforcing rings 205 in sequence from bottom to top, and the entire device body disengages from the borehole.The first fixing block 201, reinforcing ring 205, hinge 202, support frame 203, and second fixing block 204 are left inside the drilled hole, followed by the next step of injecting concrete.

[0041] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0042] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A pile assembly with a support structure, comprising a pile expansion component (1), characterized in that: A support component (2) is fixedly installed on the top of the extrusion component (1); The support assembly (2) includes a first fixing block (201), one end of a hinge (202) is fixedly installed on the outer wall of the first fixing block (201), a reinforcing ring (205) is fixedly installed on the inner wall of the first fixing block (201), a support frame (203) is fixedly installed on the other end of the hinge (202), a second fixing block (204) is attached to the top of the support frame (203), a threaded rod (206) is attached to the inner wall of the reinforcing ring (205), and a first gear (207) is provided on the top of the threaded rod (206). The outer wall of the first gear (207) is meshed with a toothed belt (208), and the inner wall of the toothed belt (208) is meshed with a second gear (209). A first rotating shaft (2010) is fixedly installed through the center of the second gear (209). A first motor (2011) is fixedly installed on the top of the first rotating shaft (2010). A top cover (2012) is fixedly installed on the top of the first motor (2011). A first cylindrical wall (2013) is installed on the bottom of the top cover (2012).

2. The extrusion-expanded support pile assembly with a supporting structure as described in claim 1, characterized in that: A protective shell (2014) is fixedly installed on the outer surface of the first cylindrical wall (2013). A support plate (2015) is fixedly installed on the inner wall of the first cylindrical wall (2013). An insert block (2018) is fitted onto the inner wall of the first cylindrical wall (2013). An insert block (2018) is provided above the support plate (2015). A reducer (2016) is fixedly installed on the top of the support plate (2015). A second motor (2017) is fixedly installed at the top input end of the reducer (2016). A third fixing block (2019) is provided on the right side of the insert block (2018). A slider (2020) is fixedly installed on the bottom of the third fixing block (2019). An annular internal gear (2021) is attached to the outer wall of the slider (2020). A third gear (2022) meshes with the inner wall of the annular internal gear (2021). The output end of a third motor (2023) is fixedly installed on the bottom of the third gear (2022). A reinforcing block (2024) is fixedly installed on the outer wall of the third motor (2023).

3. The extrusion-expanded support pile assembly with a supporting structure as described in claim 1, characterized in that: The extrusion expansion assembly (1) includes a drill bit (101). A second rotating shaft (102) and a second cylinder wall (1010) are fixedly installed on the top of the drill bit (101) from the inside to the outside. A fourth fixing block (103) is fixedly installed on the outer wall of the second rotating shaft (102). A hydraulic rod (104) is fixedly installed on the outer wall of the fourth fixing block (103). An extrusion expansion block (105) is provided at one end of the hydraulic rod (104) away from the fourth fixing block (103). A pipe (106) is fixedly installed on the outer wall of the hydraulic rod (104). A shelf plate (107) is installed through the outer wall of the pipe (106). A hydraulic cylinder (108) is fixedly installed on the top of the shelf plate (107). A hydraulic pump (109) is fixedly installed on the outer wall of the hydraulic cylinder (108).

4. The extrusion-expanded support pile assembly with a supporting structure as described in claim 1, characterized in that: The outer wall of the reinforcing ring (205) has a hole whose inner wall size is consistent with that of the outer wall of the threaded rod (206), and the inner wall of the hole is threaded.

5. The extrusion-expanded support pile assembly with a supporting structure as described in claim 2, characterized in that: The outer wall of the annular internal gear (2021) has a groove whose inner wall size matches that of the outer wall structure of the slider (2020).

6. The extrusion-expanded support pile assembly with a supporting structure as described in claim 1, characterized in that: The inner wall of the second fixing block (204) is fixedly installed with a reinforcing ring (205), and the outer wall of the second fixing block (204) close to the first cylinder wall (2013) has a groove with the same size as the inner wall of the insert block (2018).

Images