Flow-state solidified soil pile production device and method and flow-state solidified soil pile

Abstract

The invention relates to a flow-state solidified soil pile production device and method and a flow-state solidified soil pile. The flow-state solidified soil pile production device comprises a conveying mechanism, a stock bin is arranged above one end of the conveying mechanism, a discharging opening is formed in the bottom of the stock bin, a valve is arranged at the discharging opening, the flow-state solidified soil pile production device further comprises a mold, the mold comprises a pile body mold and a pile tail mold, and injection openings are formed in the tops of the pile body mold and the pile tail mold; protruding structures are arranged at the bottoms of the pile body molds, concave structures matched with the protruding structures are further arranged at the tops of the pile body molds, and the phenomenon that adjacent pile bodies are staggered during construction is avoided for the flow-state solidified soil piles produced through the production device.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation engineering, and in particular to a fluidized solidified soil pile production device and method, and a fluidized solidified soil pile. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Fluidized solidified soil piles are generally suitable for engineering scenarios such as foundation pit backfilling, narrow space backfilling, and foundation reinforcement. In the field of modern civil engineering and geotechnical engineering, with the continuous advancement of technology and the enhancement of environmental awareness, the application of new materials and technologies is becoming more and more extensive. The current production process of fluidized solidified soil piles is still imperfect, and the length of the pile body is difficult to meet the needs of the project. The current fluidized solidified soil pile production device can produce multiple short piles. The method of splicing multiple short piles into long piles can solve the problem that the length of the pile body is difficult to meet the needs of the project. However, the piles produced by the current production device are cylindrical piles, and the contact surface of the produced piles is flat when spliced. The method of splicing multiple short piles into long piles is prone to problems such as pile body dislocation and difficulty in tamping. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a fluidized solidified soil pile production device, method and fluidized solidified soil pile, which solves the problem of pile body dislocation and difficulty in strong compaction during splicing.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In the first aspect, an embodiment of the present invention provides a fluidized solidified soil pile production device, including a conveying mechanism, a silo is provided above one end of the conveying mechanism, a discharge port is provided at the bottom of the silo, a valve is provided at the discharge port, and a mold is also provided. The mold includes a pile body mold and a pile tail mold. The top of the pile body mold and the pile tail mold are both provided with injection ports, and the bottom is provided with a protruding structure. The top of the pile body mold is also provided with a recessed structure matching the protruding structure.

[0007] Optionally, the conveying part of the conveying mechanism is provided with a groove matching the protruding structure, and the protruding structure can be inserted into the groove to fix the mold on the conveying part of the conveying mechanism.

[0008] Optionally, a mixing mechanism is provided in the silo.

[0009] Optionally, the area of ​​the conveying mechanism corresponding to the discharge port of the silo is the loading area, and a photoelectric sensor is also provided at the discharge port of the silo. The photoelectric sensor is located at a set position at the discharge port so that when the mold moves to the loading area, the photoelectric sensor corresponds to the injection port.

[0010] Optionally, the conveying mechanism adopts a belt conveying mechanism.

[0011] Optionally, a plurality of eccentric wheels are provided below the upper conveyor belt portion of the belt conveying mechanism, the eccentric wheels are in contact with the upper conveyor belt portion of the mechanism to be conveyed, and the eccentric wheels are connected to the rotating drive mechanism.

[0012] Optionally, the mold includes an outer wall, which is composed of a semi-columnar first side wall and a second side wall that are detachably connected, a bottom plate is provided at the bottom of the first side wall and the second side wall, and the two bottom plates are spliced ​​to facilitate the provision of a semi-convex structure. After the first side wall and the second side wall are spliced, the two bottom plates constitute the bottom of the mold, and the two semi-convex structures constitute the convex structure at the bottom of the mold. The top end of the outer wall is detachably connected to a top cover, and the top cover is provided with a material injection port. The top cover of the pile body mold is also provided with a recessed structure matching the convex structure.

[0013] Optionally, the protruding structure is arranged at the center position of the bottom of the mold, and the recessed structure is arranged at the center position of the top of the pile body mold.

[0014] In a second aspect, an embodiment of the present invention provides a working method of the fluidized solidified soil pile production device according to the first aspect:

[0015] The conveying mechanism drives the mold to move below the discharge port of the silo, so that the discharge port corresponds to the injection port of the mold, and the valve at the discharge port opens to inject material into the mold;

[0016] After the injection is completed, the valve is closed, and the conveying mechanism drives the mold to move away from the position directly below the discharge port;

[0017] The mold is removed from the conveying mechanism, and the prefabricated pile formed in the mold is demoulded after being cured for a set time, thereby completing the pile body preparation of the fluidized solidified soil pile.

[0018] In a third aspect, an embodiment of the present invention provides a fluidized solidified soil pile, which is composed of a plurality of pile bodies spliced ​​together, and the pile body is prepared by the working method of the fluidized solidified soil pile production device described in the second aspect.

[0019] The beneficial effects of the present invention are as follows:

[0020] The production device of the present invention has a protruding structure at the bottom of the mold and a concave structure matching the protruding structure at the top of the pile body mold. Therefore, in the cast fluidized solidified soil pile, the top of the pile body of the pile body part is provided with a concave, and the bottom is provided with a protrusion matching the concave. When two adjacent pile bodies are spliced, the protrusion can be inserted into the concave, so as to position the two pile bodies, avoiding the misalignment phenomenon when the pile bodies are spliced, which is beneficial to the strong tamping construction. At the same time, the setting of the protrusion can cooperate with the groove of the conveying component of the conveying mechanism, ensuring the stability of the mold placed on the conveying mechanism, so that the mold will not tip over when the eccentric wheel is used to apply vibration, which is beneficial to the pile formation of the material in the mold, and the conveying mechanism can be used for the transfer of the mold, thereby improving the automation degree and production efficiency of the fluidized solidified soil pile production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0022] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0023] Figure 2 is a schematic diagram of the structure of the conveying mechanism of Example 1 of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the feeding mechanism of Example 1 of the present invention;

[0025] Figure 4 This is a schematic diagram of the pile body mold structure of Embodiment 1 of the present invention;

[0026] Figure 5 is a cross-sectional view of a pile body mold according to embodiment 1 of the present invention;

[0027] Figure 6 This is a schematic diagram of the pile tail mold structure of Example 1 of the present invention;

[0028] Figure 7 is a cross-sectional view of embodiment 3 of the present invention;

[0029] Figure 8 This is a schematic diagram of the construction process of Example 3 of the present invention;

[0030] Among them, 1. feeding mechanism, 2. mold, 3. conveying mechanism;

[0031] 101. silo, 102. stirrer, 103. stirring shaft, 104. solenoid valve, 105. discharge port, 106. bracket, 107. photoelectric sensor;

[0032] 201. injection port, 202. handle, 203. outer wall, 204. top cover, 205. pile body mold, 206. pile tail mold;

[0033] 301. belt transmission mechanism, 302. groove, 303. eccentric wheel;

[0034] 401. Pile tail and pile body, 402. Pile body, 403. Epoxy mortar adhesive, 404. Pile end structure. DETAILED DESCRIPTION

[0035] Example 1

[0036] This embodiment provides a fluidized solidified soil pile production device, such as Figure 1 As shown, it includes a conveying mechanism 3, one end area of ​​the conveying mechanism 3 serves as a loading area, and a feeding mechanism 1 is arranged above the loading area. The feeding mechanism 1 includes a silo and a bracket. The silo and the bracket are fixed and supported by the bracket. The silo is used to add initial materials of fluidized solidified soil such as curing agent, crushed dry soil, water, etc., and a discharge port is provided at the bottom of the silo. A valve is provided at the discharge port, and the valve is used to control the opening and closing of the discharge port at the bottom of the silo. It also includes a mold 2, and the mold 2 is used for molding fluidized solidified piles. The mold 2 includes a pile body mold and a pile tail mold. The pile tail mold is used to mold the pile body at the top of the fluidized solidified soil pile, and the pile body mold is used to mold the remaining pile bodies of the fluidized solidified soil pile.

[0037] The mold 2 is placed on the conveying part of the conveying mechanism 3, which transports the mold 2. When the mold 2 moves to the feeding area, the valve at the outlet of the silo opens to add fluidized solidified soil material to the mold 2. After the material is added, the conveying mechanism 3 drives the mold 2 to leave the feeding area, and the material injected into the mold 2 is formed inside the mold 2.

[0038] like Figure 2 As shown, the conveying mechanism 3 adopts a belt conveying mechanism 301, which includes a driving pulley and a driven pulley. The driving pulley is connected to the conveying drive motor. A conveyor belt is wound between the driving pulley and the driven pulley, and the conveyor belt serves as the conveying part of the conveying mechanism.

[0039] Furthermore, the conveyor belt is a rubber conveyor belt.

[0040] The set area at one end of the conveyor belt is a loading area, and a silo 101 is arranged just above the loading area. Figure 3 As shown, the silo 101 includes a cylindrical part and an inverted cone part. The bottom end of the cylindrical part is fixed integrally with the top end of the inverted cone part, and the junction position thereof is fixedly connected to the bracket 106. The bracket 106 is arranged across the conveying mechanism 3, and the bottom end of the bracket 106 is fixed on the bottom surface foundation.

[0041] A discharge port 105 is provided at the bottom end of the inverted cone portion, and a valve is provided at the discharge port 105. Preferably, the valve is a solenoid valve 104, which is connected to a control system and can receive instructions from the control system to work.

[0042] Correspondingly, the conveyor belt is provided with a detection element at a set position on one side of the loading area. The detection element adopts a photoelectric sensor, and the photoelectric sensor is connected to the control system. When the detection element detects that the mold moves to the loading area, it can send an instruction to the control system. The control system controls the solenoid valve to open and inject the physical material in the silo into the mold.

[0043] The silo 101 is provided with a mixing mechanism, which is used to mix the initial material of the fluidized solidified soil. In this embodiment, the mixing mechanism includes a stirring shaft 103, one end of which is connected to a stirring drive motor, and the stirring shaft is provided with a stirrer 102. The stirrer can be an existing spiral blade, such as the spiral blade structure disclosed in patent CN221475635. The stirring drive motor is fixed to the top of the silo cover, and the silo cover is provided with a feeding port for adding the initial material into the silo;

[0044] or;

[0045] The stirring drive motor is fixed on a support beam, the support beam is fixed inside the silo 101, and a protective cover fixed on the support beam is arranged on the periphery of the stirring drive motor. When this arrangement is adopted, the top of the silo is opened.

[0046] In this embodiment, the stirring shaft 103, the stirrer 102 and the silo are all made of steel.

[0047] The mold 2 is an injection molded product, including a pile body mold 206 and a pile tail mold 205. Figure 4-Figure 5 As shown, the pile body mold 206 adopts a cylindrical structure, including an outer wall 203, a top cover 204 is provided at the top of the outer wall 203, and a bottom plate is provided at the bottom. The outer wall 203, the top cover 204 and the bottom plate enclose a closed cavity, and a cylindrical recessed structure is provided at the center of the top cover 204, and a cylindrical protruding structure matching the recessed structure is provided at the center of the bottom plate. The mold adopts this structural form, so that the top of the pile body of the cast pile body is provided with a cylindrical recess and the bottom is provided with a cylindrical protrusion. When adjacent pile bodies are spliced, the protrusion can be inserted into the recess, thereby realizing the splicing of two pile bodies, avoiding the dislocation phenomenon when the pile bodies are spliced, and being beneficial to the strong compaction of the pile body.

[0048] To facilitate demoulding, the outer wall is composed of a semi-cylindrical first side wall and a second side wall that are detachably connected. Preferably, a flange is provided at the joint of the first side wall and the second side wall, and a fixing hole is provided on the flange. The first side wall and the second side wall are detachably fixedly connected by the flange, the fixing hole, bolts and nuts.

[0049] A semicircular bottom plate portion is fixed to the bottom of the first side wall and the second side wall, and a semi-cylindrical semi-convex structure is provided in the middle of the splicing edge of the bottom plate portion. After the first side wall and the second side wall are spliced ​​together, the two bottom plate portions constitute a circular bottom plate, and the two semi-convex structures constitute a cylindrical convex structure in the center of the bottom plate.

[0050] The edge of the top cover 204 is detachably fixedly connected to the top end of the outer wall formed by the first side wall and the second side wall by a plurality of bolts distributed at equal intervals along the circumferential direction.

[0051] When demoulding, first remove the top cover, then remove the bolts and nuts between the first side wall and the second side wall, separate the first side wall and the second side wall, and then separate the formed prefabricated pile from the bottom plate to achieve demoulding.

[0052] The top cover is also provided with a material injection port 201 at an eccentric position for adding material into the mold 2 .

[0053] The outer cylindrical surfaces of the first side wall and the second side wall are also provided with handles 202 to facilitate the staff to take and place the mold.

[0054] like Figure 6 As shown, the structure of the pile tail mold 206 is the same as that of the pile body mold 205, the only difference is that the center of the top cover 204 is not provided with a concave structure, and the specific structure thereof will not be repeated again.

[0055] Furthermore, in order to ensure that the material is piled up smoothly in the mold, the belt conveyor mechanism is also equipped with a vibrating mechanism.

[0056] Specifically, the conveyor belt with the conveying mechanism is divided into an upper conveyor belt part and a lower conveyor belt part by a driving wheel and a driven wheel. A plurality of eccentric wheels 303 are arranged between the upper conveyor belt part and the lower conveyor belt part. The eccentric wheels 303 are in contact with the bottom surface of the upper conveyor belt part. The eccentric wheels 303 are connected to a rotating driving mechanism. The rotating driving mechanism can drive the eccentric wheels 303 to rotate, thereby driving the upper conveyor belt part to vibrate through the eccentric wheels 303, thereby realizing the vibration of the material in the mold 2.

[0057] The rotation driving mechanism can be a device such as a motor that can output rotational motion, and will not be described in detail here.

[0058] Furthermore, the conveyor belt is provided with a plurality of grooves 302, which are arranged at equal intervals along the movement direction of the conveyor belt. The grooves 302 match the raised structures at the bottom of the mold 2. When the mold 2 is placed on the conveyor belt, the raised structures are inserted into the grooves 302 to ensure the stability of the mold 2 placed on the conveyor belt.

[0059] In this embodiment, the raised structure at the bottom of the mold 2 can cooperate with the groove 302 on the conveyor belt, ensuring the stability of the mold 2 placed on the conveying mechanism, so that the mold 2 will not tip over when the eccentric wheel 303 is used to apply vibration, which is conducive to the pile formation of materials in the mold 2, and enables the belt conveyor mechanism 301 to be used for the transfer of the mold 2, thereby improving the degree of automation and production efficiency of the fluidized solidified soil pile production.

[0060] Furthermore, a photoelectric sensor 107 connected to the control system is provided at the discharge port of the silo 101. The photoelectric sensor 107 is located at a set position at the discharge port 105 so that when the mold 2 moves to the loading area, the position of the photoelectric sensor 107 corresponds to the position of the injection port 201 at the top of the mold, so that the photoelectric sensor 107 can detect the grouting liquid level in the mold 2, and cooperate with the solenoid valve 104 to control the injection of the mold, thereby further improving the degree of automation of the production device.

[0061] Example 2

[0062] This embodiment provides a working method of a fluidized solidified soil pile production device, comprising the following steps:

[0063] Step 1: Add the initial materials of fluidized solidified soil, such as curing agent, crushed dry soil, and water, into the silo 101 according to a preset ratio and mix them thoroughly using the mixing mechanism 102 .

[0064] Step 2: Place the mold 2 on the conveyor belt, insert the raised structure of the mold 2 into the groove 302 of the conveyor belt, and start the conveying mechanism. When the mold moves to the loading area, the conveying mechanism 3 stops working, the solenoid valve 104 opens, and the material is added to the mold 2 through the injection port 201.

[0065] Step 3: After the injection of the mold 2 is completed, the conveying mechanism 3 drives the mold 2 to leave the loading area and transport it to the other end of the conveying mechanism 3. During the conveying process, the eccentric wheel 303 rotates, driving the upper conveyor belt to vibrate, vibrating and compacting the material in the mold 2, so that the material in the mold 2 is piled up to form a prefabricated pile.

[0066] Step 3: Place the mold 2 in a curing room and cure for a set time, then demould it to complete the preparation of the pile body.

[0067] Example 3

[0068] This embodiment provides a fluidized solidified soil pile, such as Figure 7 As shown, it is composed of a plurality of pile bodies, wherein the lowest pile end structure 404 is cone-shaped with a depression at the top center, the uppermost pile tail body 401 is cast by a pile tail mold, and the remaining pile bodies 402 are cast by a pile body mold, and in adjacent pile bodies, the convex structure of one pile body is inserted into the concave structure of another pile body, the lowest pile end structure 404 is a prefabricated part, and the mold used only needs to provide a concave structure on the top cover of the existing cone-shaped mold, the pile body 402 is cast by a pile body mold 205, and the uppermost pile tail body 401 is cast by a pile tail mold 206.

[0069] like Figure 8 As shown, the construction method of the fluidized solidified soil pile of this embodiment includes the following steps:

[0070] Step 1: Dig a positioning hole of a certain depth at the specified point on the project site to ensure the accuracy of the construction point and the verticality of the entire fluidized solidified soil pile.

[0071] Step 2: Lower the lowest pile end structure 404 and use a machine to press the pile end structure 404 down to the ground level. The pile end structure 404 is a conical prefabricated concrete component.

[0072] Step 3: Lower the pile body 402 at the bottom of the pile body, connect the pile body 402 and the pile end structure 404 using epoxy mortar adhesive 403, and use a machine to press the pile body 402 to the ground elevation.

[0073] Step 4: Repeat step 3 to complete the lowering of multiple pile bodies 402, and determine the splicing length of the pile bodies according to the on-site pile length requirements.

[0074] Step 5: Lower the top pile tail body 401, connect the pile tail body 401 with the pile body structure using epoxy mortar adhesive 403, and press it down to the ground level to complete the construction of the entire fluidized solidified soil pile.

[0075] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fluidized solidified soil pile production device, characterized in that: It includes a conveying mechanism, a silo is provided above one end of the conveying mechanism, a discharge port is provided at the bottom of the silo, a valve is provided at the discharge port, and a mold is also included. The mold includes a pile body mold and a pile tail mold. The tops of the pile body mold and the pile tail mold are both provided with injection ports, and the bottoms are both provided with convex structures. The top of the pile body mold is also provided with a concave structure matching the convex structure.

2. A fluidized solidified soil pile production device as claimed in claim 1, characterized in that: The conveying part of the conveying mechanism is provided with a groove matching the convex structure, and the convex structure can be inserted into the groove to fix the mold on the conveying part of the conveying mechanism.

3. A fluidized solidified soil pile production device as claimed in claim 1, characterized in that: A mixing mechanism is provided in the silo.

4. A fluidized solidified soil pile production device as claimed in claim 1, characterized in that: The area of ​​the conveying mechanism corresponding to the discharge port of the silo is the loading area. A photoelectric sensor is also provided at the discharge port of the silo. The photoelectric sensor is located at a set position at the discharge port so that when the mold moves to the loading area, the photoelectric sensor corresponds to the injection port.

5. The fluidized solidified soil pile production device according to claim 1, characterized in that: The conveying mechanism adopts a belt conveying mechanism.

6. A fluidized solidified soil pile production device as claimed in claim 5, characterized in that: A plurality of eccentric wheels are arranged below the upper conveyor belt portion of the belt conveying mechanism, the eccentric wheels are in contact with the upper conveyor belt portion of the mechanism to be conveyed, and the eccentric wheels are connected to the rotation driving mechanism.

7. The fluidized solidified soil pile production device according to claim 1, characterized in that: The mold includes an outer wall, which is composed of a semi-columnar first side wall and a second side wall that are detachably connected. A bottom plate is provided at the bottom of the first side wall and the second side wall. The two bottom plates are spliced ​​to form a semi-convex structure. After the first side wall and the second side wall are spliced, the two bottom plates constitute the bottom of the mold, and the two semi-convex structures constitute the convex structure at the bottom of the mold. The top end of the outer wall is detachably connected to a top cover, and the top cover is provided with a material injection port. The top cover of the pile body mold is also provided with a recessed structure matching the convex structure.

8. The fluidized solidified soil pile production device according to claim 1, characterized in that: The protruding structure is arranged at the center position of the bottom of the mold, and the concave structure is arranged at the center position of the top of the pile body mold.

9. A working method of the fluidized solidified soil pile production device according to any one of claims 1 to 8, characterized in that: The conveying mechanism drives the mold to move below the discharge port of the silo, so that the discharge port corresponds to the injection port of the mold, and the valve at the discharge port opens to inject material into the mold; After the injection is completed, the valve is closed, and the conveying mechanism drives the mold to move away from the position directly below the discharge port; The mold is removed from the conveying mechanism, and the prefabricated pile formed in the mold is demoulded after being cured for a set time, thereby completing the pile body preparation of the fluidized solidified soil pile.

10. A fluidized solidified soil pile, composed of a plurality of pile bodies spliced ​​together, characterized in that: The pile body is prepared by the working method of the fluidized solidified soil pile production device described in claim 9.

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