Cast-in-place pile hole forming device for collapsible loess

Abstract

The utility model relates to the technical field of civil engineering, and discloses a collapsible loess cast-in-place pile hole forming device which comprises soil materials, and an impermeable film is placed on the top of the soil materials. According to the hole forming device for the cast-in-place pile in the collapsible loess, through the arrangement of an anti-seepage film, fixing nails, limiting mechanisms and a protective cover, the anti-seepage film is placed on the surface of a soil material and a pre-pressing pile hole, then the four sets of fixing nails penetrate through the periphery of the anti-seepage film, the anti-seepage film can be fixed, and the two sets of limiting mechanisms are placed on the left side and the right side of the top of the anti-seepage film; four groups of bolts A are rotated to penetrate through four groups of square blocks A to fix the pre-pressing pile hole, and then two groups of bearing plates are respectively clamped in two groups of groove plates, so that the protective cover is fixed at the top of the pre-pressing pile hole, and the situation that part of soil falls into the pre-pressing pile hole in windy weather is avoided; and the situation that soil materials on the inner wall are mixed into the dry-mixed materials and the performance and structural stability of the dry-mixed materials are damaged due to the fact that the inner wall of the pre-pressed pile hole is touched in the compaction process of each stage is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to a bored pile hole forming device for collapsible loess. Background Art

[0002] Collapsible loess refers to soil that undergoes significant additional deformation due to structural damage after being soaked in water under the action of the self-weight stress of the overlying soil layer, or under the combined action of self-weight stress and additional stress. The soil is relatively uniform, loose in structure, and has developed pores. When not soaked in water, it is generally strong and has low compressibility. When soaked in water under a certain pressure, the soil structure will be rapidly destroyed, resulting in large additional subsidence and a rapid decrease in strength. The bored pile drilling device for collapsible loess is a commonly used foundation treatment method, which drives prefabricated or cast-in-place piles into the foundation to transfer the load of the superstructure and improve the properties of the surrounding soil.

[0003] At present, most of the bored pile drilling devices for collapsible loess usually need to fill the dry-mixed materials into the pre-pressed pile holes in stages and then compact them through the equipment to improve the properties and structure of the soil, reduce the permeability and compressibility of the soil, and control the occurrence of its collapsibility. However, in the compaction process of each stage, it is inevitable to touch the inner wall of the pre-pressed pile hole, causing the soil on the inner wall to be mixed into the dry-mixed materials. On the one hand, the performance and structural stability of the dry-mixed materials are destroyed and cannot meet the design requirements. On the other hand, the soil material is deformed after encountering water, resulting in voids in the foundation, further reducing the structural stability of the foundation.

[0004] A device for boring bored piles in collapsible loess disclosed in announcement number CN220929275U, although a device for boring bored piles in collapsible loess comprises a support frame, a guide rail is arranged in the support frame, a slider is slidably connected in the guide rail, a movable plate is connected between the sliders, a drill assembly is connected at the lower end of the movable plate, the drill assembly comprises a first drill bit, a second drill bit, a third drill bit and a rotating rod, the movement of the movable plate in the support frame is achieved by the sliding of the slider in the guide rail, so that the position of the drill assembly can be adjusted, and the up and down movement of the drill assembly is convenient, the inner wall of the hole can be pressed by the first drill bit, the spiral block on the outer surface of the second drill bit can further break the soil and transport the soil squeezed out by the third drill bit upward, so as to facilitate the first drill bit to press the squeezed soil against the inner wall of the hole, and a plurality of U-shaped grooves are arranged at the bottom end of the third drill bit. Due to its larger contact surface, the U-shaped groove can enter the soil more quickly than a drill bit without a groove.

[0005] Although the above patent can avoid the collapse of the hole, so that the soil will not fall or be blocked in the hole during drilling, and the control of the hole depth and hole diameter is ensured; however, it is not easy for the device to remove the soil that falls into the inner cavity of the positioning box.

[0006] Therefore, it is necessary to propose a bored pile drilling device for collapsible loess to solve the above problems. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] The technical problem solved by the utility model is to provide a device for boring bored piles in collapsible loess which is highly practical, can be simply operated and has a relatively simple structure. It solves the problem raised in the above background technology that the inner wall of the pre-pressed pile hole will inevitably be touched during the compaction process at each stage, causing the soil on the inner wall to be mixed into the dry mixed material and it is difficult to remove the soil that has fallen into the inner cavity of the positioning box.

[0009] (II) Technical solution

[0010] To achieve the above purpose, the utility model is implemented through the following technical solutions: a bored pile drilling device for collapsible loess, including soil material, an impermeable membrane is placed on the top of the soil material, fixing nails are penetrated on all sides of the impermeable membrane, limiting mechanisms are fixedly connected to the left and right sides of the top of the impermeable membrane, a group of protective covers are fixedly connected to the tops of the two limiting mechanisms, supporting mechanisms are fixedly connected to the left and right sides of the top of the soil material, a group of piling members are slidably connected to the inner side walls of the two supporting mechanisms, a penetration hole is opened on one side of the piling member, a storage mechanism is threadedly connected to the bottom of the piling member, iron plates are welded to the outer sides of the two supporting mechanisms, and a lighting mechanism is welded to one side of the two iron plates.

[0011] As a further solution of the utility model, the limiting mechanism includes four groups of square blocks A fixedly connected to the left and right sides of the top of the anti-seepage membrane, the surfaces of the four square blocks A are threadedly connected with bolts A, the inner walls of the four square blocks A are fixedly connected with two groups of groove plates, the tops of the two groove plates are snap-connected with receiving plates, the tops of the two receiving plates are fixedly connected to the left and right sides of the bottom of the protective cover, and the receiving plates play the role of fixing the protective cover, which is convenient for protecting the pre-pressed pile holes.

[0012] As a further solution of the utility model, the supporting mechanism includes supporting frames fixedly connected to the left and right sides of the top of the soil material, the inner walls of the two supporting frames are welded with sliding rails, and the inner walls of the two sliding rails are slidably connected with a group of piling parts. The sliding rails serve to increase the stability of the piling parts and have certain practicality.

[0013] As a further solution of the utility model, the storage mechanism includes a threaded sleeve threadedly connected to the bottom of the piling member, and the bottom of the threaded sleeve is integrally connected with a container, which serves to store soil.

[0014] As a further solution of the utility model, a group of hydraulic rods are fixedly connected to the tops of the two support frames, and receiving frames are welded to the left and right sides of the hydraulic rods, and the receiving frames play a role in fixing the hydraulic rods.

[0015] As a further solution of the utility model, a square block B is welded to the bottom of one side of the two receiving frames, and the surfaces of the two square blocks B are threadedly connected with bolts B, which play the role of fixing the square blocks B.

[0016] (III) Beneficial effects

[0017] The utility model provides a bored pile drilling device for collapsible loess, which has the following beneficial effects:

[0018] 1. The device for forming a bored pile hole in collapsible loess soil has an anti-seepage membrane, fixing nails, a limiting mechanism and a protective cover. The anti-seepage membrane is placed on the surface of the soil material and the pre-pressed pile hole, and four groups of fixing nails are passed through the four sides of the anti-seepage membrane to fix the anti-seepage membrane. Two groups of limiting mechanisms are placed on the left and right sides of the top of the anti-seepage membrane, and four groups of bolts A are rotated to pass through four groups of square blocks A to fix it. Two groups of receiving plates are respectively engaged in two groups of groove plates to fix the protective cover on the top of the pre-pressed pile hole, so as to avoid part of the soil falling into the pre-pressed pile hole in windy weather, and also to avoid touching the inner wall of the pre-pressed pile hole during the compaction process at each stage, so as to avoid the soil on the inner wall being mixed into the dry-mixed material, and causing the performance and structural stability of the dry-mixed material to be damaged.

[0019] 2. The device for bored piles in collapsible loess has a pile driving member, a penetration hole and a storage mechanism. When the device is used, the hydraulic rod is started, and the hydraulic rod drives the pile driving member and the storage mechanism to move downward to pre-press the soil in the pile hole. At this time, the soil falls into the container through the penetration hole. After the work is completed, the container is rotated under the action of the threaded sleeve until the container is separated from the pile driving member. The soil in the threaded sleeve can be taken out, which is convenient for taking out the soil in the pre-pressed pile hole and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0022] Figure 3 This is a schematic diagram of the support mechanism structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the lighting mechanism structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the limit block structure of the utility model.

[0025] In the figure: 1. soil; 2. anti-seepage membrane; 3. fixing nail; 4. limiting mechanism; 401. square block A; 402. bolt A; 403. groove plate; 404. receiving plate; 5. protective cover; 6. supporting mechanism; 601. supporting frame; 602. slide rail; 7. piling piece; 8. penetration hole; 9. storage mechanism; 901. threaded sleeve; 902. container; 10. lighting mechanism; 1001. rotating shaft; 1002. lighting lamp; 1003. limiting block; 1004. screw; 11. hydraulic rod; 12. receiving frame; 13. square block B; 14. bolt B. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 5 The utility model provides a technical solution: a bored pile drilling device for collapsible loess, comprising soil material 1, an impermeable membrane 2 is placed on the top of the soil material 1, fixing nails 3 are penetrated on all sides of the impermeable membrane 2, the left and right sides of the top of the impermeable membrane 2 are fixedly connected to the limiting mechanism 4, and a group of protective covers 5 are fixedly connected to the top of the two limiting mechanisms 4. Through the arrangement of the impermeable membrane 2, the fixing nails 3, the limiting mechanism 4 and the protective cover 5, part of the soil is prevented from falling into the pre-pressed pile hole in windy weather, and it is also prevented from touching the inner wall of the pre-pressed pile hole during the compaction process at each stage, causing the inner wall to be damaged. The soil material 1 on the wall is mixed into the dry-mixed material, and the performance and structural stability of the dry-mixed material are destroyed. The left and right sides of the top of the soil material 1 are fixedly connected with support mechanisms 6. The inner side walls of the two support mechanisms 6 are slidably connected with a group of pile driving members 7. A penetration hole 8 is opened on one side of the pile driving member 7. The bottom of the pile driving member 7 is threadedly connected with a storage mechanism 9. Through the arrangement of the pile driving member 7, the penetration hole 8 and the storage mechanism 9, it is convenient to take out the soil in the pre-pressed pile hole, thereby improving the work efficiency. The outer sides of the two support mechanisms 6 are welded with iron plates, and one side of the two iron plates is welded with a lighting mechanism 10;

[0028] See also Figure 2 The limiting mechanism 4 includes four groups of square blocks A401 fixedly connected to the left and right sides of the top of the anti-seepage membrane 2, the surfaces of the four square blocks A401 are threadedly connected with bolts A402, the inner walls of the four square blocks A401 are fixedly connected with two groups of groove plates 403, the tops of the two groove plates 403 are snap-connected with receiving plates 404, the tops of the two receiving plates 404 are fixedly connected to the left and right sides of the bottom of the protective cover 5, and the receiving plates 404 play the role of fixing the protective cover 5, which is convenient for protecting the pre-pressed pile holes.

[0029] See also Figure 3 The supporting mechanism 6 includes supporting frames 601 fixedly connected to the left and right sides of the top of the soil material 1, the inner walls of the two supporting frames 601 are welded with sliding rails 602, and the inner walls of the two sliding rails 602 are slidably connected with a group of piling members 7. The sliding rails 602 play a role in increasing the stability of the piling members 7 and have certain practicality.

[0030] See also Figure 3 The storage mechanism 9 includes a threaded sleeve 901 threadedly connected to the bottom of the piling member 7, and a container 902 is integrally connected to the bottom of the threaded sleeve 901, and the container 902 serves to store soil.

[0031] See also Figure 1 A group of hydraulic rods 11 are fixedly connected to the tops of the two support frames 601 , and receiving frames 12 are welded on the left and right sides of the hydraulic rods 11 , and the receiving frames 12 play a role in fixing the hydraulic rods 11 .

[0032] See also Figure 1 A square block B13 is welded to the bottom of one side of the two receiving frames 12, and bolts B14 are threadedly connected to the surfaces of the two square blocks B13, and the bolts B14 play the role of fixing the square blocks B13.

[0033] Embodiment 1:

[0034] See also Figure 4 The lighting mechanism 10 includes a rotating shaft 1001 welded to one side of the two sets of iron plates, and one side of the two rotating shafts 1001 is rotatably connected with a lighting lamp 1002. Under the action of the two sets of rotating shafts 1001, the two sets of lighting lamps 1002 are driven to rotate until they rotate to a suitable angle, and the two sets of lighting lamps 1002 are turned on, thereby illuminating the surroundings of the device, thereby improving practicality;

[0035] Embodiment 2:

[0036] See also Figure 5 The lighting mechanism 10 includes a limit block 1003 fixedly connected to one side of the two groups of iron plates. The surfaces of the two limit blocks 1003 are threaded with screws 1004. By rotating the two groups of screws 1004 until the two groups of screws 1004 are respectively inserted into the two groups of limit blocks 1003, the two groups of lighting lamps 1002 can be fixed, which is convenient for operators to inspect and replace the lighting lamps 1002 at a later time, thereby improving convenience.

[0037] In the utility model, the working steps of the device are as follows:

[0038] The first step: place the anti-seepage membrane 2 on the surface of the soil material 1 and the pre-pressed pile hole, and then penetrate four sets of fixing nails 3 around the anti-seepage membrane 2 to fix the anti-seepage membrane 2, place two sets of limiting mechanisms 4 on the left and right sides of the top of the anti-seepage membrane 2, rotate four sets of bolts A402 to penetrate four sets of square blocks A401 to fix it, and then respectively engage two sets of receiving plates 404 in two sets of groove plates 403 to fix the protective cover 5 on the top of the pre-pressed pile hole;

[0039] The second step: when using the device, start the hydraulic rod 11, which drives the pile driving member 7 and the storage mechanism 9 to move downward to pre-press the soil 1 into the pile hole. At this time, the soil falls into the container 902 through the penetration hole 8. After the work is completed, the container 902 is rotated under the action of the threaded sleeve 901 until the container 902 is separated from the pile driving member 7, and the soil in the threaded sleeve 901 can be taken out.

[0040] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0041] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for forming a bored pile in collapsible loess soil, comprising soil material (1), characterized in that: An impermeable membrane (2) is placed on the top of the soil material (1), and fixing nails (3) are inserted around the impermeable membrane (2). The left and right sides of the top of the impermeable membrane (2) are fixedly connected to limiting mechanisms (4), and a group of protective covers (5) are fixedly connected to the tops of the two limiting mechanisms (4). The left and right sides of the top of the soil material (1) are fixedly connected to supporting mechanisms (6), and the inner side walls of the two supporting mechanisms (6) are slidably connected to a group of piling members (7), one side of the piling members (7) is provided with a penetration hole (8), and the bottom of the piling members (7) is threadedly connected to a storage mechanism (9), and the outer sides of the two supporting mechanisms (6) are welded with iron plates, and one side of the two iron plates is welded with a lighting mechanism (10).

2. The device for forming a bored pile in collapsible loess soil according to claim 1, characterized in that: The limiting mechanism (4) comprises four groups of square blocks A (401) fixedly connected to the left and right sides of the top of the anti-seepage membrane (2), the surfaces of the four square blocks A (401) are all threadedly connected with bolts A (402), the inner side walls of the four square blocks A (401) are fixedly connected with two groups of groove plates (403), the tops of two of the groove plates (403) are snap-connected with receiving plates (404), and the tops of the two receiving plates (404) are fixedly connected to the left and right sides of the bottom of the protective cover (5).

3. The device for forming a bored pile in collapsible loess soil according to claim 1, characterized in that: The support mechanism (6) comprises support frames (601) fixedly connected to the left and right sides of the top of the soil material (1), the inner side walls of the two support frames (601) are welded with slide rails (602), and the inner side walls of the two slide rails (602) are slidably connected with a group of piling members (7).

4. The device for forming a bored pile in collapsible loess soil according to claim 1, characterized in that: The storage mechanism (9) comprises a threaded sleeve (901) threadedly connected to the bottom of the piling member (7), and a container (902) is integrally connected to the bottom of the threaded sleeve (901).

5. The device for forming a bored pile in collapsible loess soil according to claim 3, characterized in that: A group of hydraulic rods (11) are fixedly connected to the tops of the two support frames (601), and receiving frames (12) are welded to the left and right sides of the hydraulic rods (11).

6. The device for forming a bored pile in collapsible loess soil according to claim 5, characterized in that: A square block B (13) is welded to the bottom of one side of the two receiving frames (12), and bolts B (14) are threadedly connected to the surfaces of the two square blocks B (13).

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