Rectangular drilling equipment for rectangular support pile construction
By designing the moment-forming hole equipment for rectangular support pile construction, the existing prefabricated pile construction methods are solved, and efficient crushing and excavation of hard soil is achieved, and construction efficiency and effect are improved.
Patent Information
- Application Number
- CN202421562354.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The existing prefabricated pile construction methods such as hammering piles and static pile pressing piles have failed to play a good economic and useful effect in areas with hard soil, which limits the application and development of prefabricated support piles and prefabricated foundation pit support structures.
A torque-forming hole equipment for rectangular support pile construction is designed, including a main machine and a groundbreaking device. The groundbreaking device consists of a connecting rod, a groundbreaking cylinder, a milling disk and a hydraulic system. The drive shaft drives the drive shaft to drive the earth-cutting cylinder and a milling disk to rotate, which is used to crush and excavate hard soil and small blocks. The outer wall of the milling disk is used to level the hole wall.
This equipment can effectively crush and excavate hard soil and small stones in the construction of rectangular support piles in hard soil areas, achieving efficient hole formation and improving construction efficiency and effect.
Smart Images
Figure CN222686593U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of foundation pit construction and relates to a rectangular hole-forming device used for the construction of rectangular supporting piles. Background Art
[0002] With the rapid development of urban scale, how to fully explore limited space for urban construction has become a hot research issue. Therefore, the development and utilization of underground space has entered people's field of vision, and deep foundation pit projects have emerged continuously. Since deep foundation pits generally do not have good slope conditions, retaining structures are required to ensure the stability of the foundation pit. At present, the most commonly used foundation pit support systems include pile-wall anchor support system and composite soil nail wall system. Among them, the pile-anchor support system is suitable for foundation pit projects of various types and soils and is the most widely used. Among them, according to the construction method of the support piles, they can be divided into cast-in-place piles and precast piles. Cast-in-place piles are generally constructed using bored concrete pouring technology, while precast piles usually use static pressure piles or lead-hole pile planting technology. Compared with cast-in-place piles, precast piles have the advantages of controllable quality, less mud and garbage generated during construction, low noise, and fast construction speed. However, there are certain requirements for the geological conditions of the foundation pit, and they are mainly used in areas with soft soil. In recent years, prefabricated building technology has developed rapidly. In the field of prefabricated foundation pits, prefabricated piles, plates, walls, nails and a series of corresponding construction technologies have been further improved, bringing considerable economic and social benefits. However, in areas where loess is mainly distributed in a large area regardless of the stratum, the soil is relatively hard. The commonly used prefabricated pile construction methods at this stage, such as hammer pile sinking and static pile pressure, have failed to play a good economic and use effect, which restricts the further application and development of prefabricated support piles and prefabricated foundation pit support structures. Utility Model Content
[0003] The purpose of the utility model is to solve the technical problem that the commonly used prefabricated pile construction methods in the prior art, such as hammer pile driving and static pile driving, fail to achieve good economic and use effects in areas with hard soil, and to provide a rectangular hole-making device for the construction of rectangular support piles.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] In the first aspect, the utility model provides a rectangular hole-forming equipment for rectangular support pile construction, including a main machine and a soil-breaking device; the main machine is provided with a control system and a hydraulic system that are interconnected; the soil-breaking device includes a connecting rod connected to a lifting drill when working, the lower end of the connecting rod is connected to a chassis, and a plurality of groups of brackets are provided at the lower end of the chassis, and the group of brackets includes two brackets relatively arranged on both sides of the lower end of the chassis, and the group of brackets supports the same transmission shaft; a soil-cutting barrel is fixedly connected to the transmission shaft, and milling discs are fixedly connected to both ends of the transmission shaft; the hydraulic system is connected to the transmission shaft.
[0006] The further improvement of the utility model is:
[0007] The soil cutting cylinder is evenly provided with a plurality of soil cutting tooth belts arranged in a spiral pattern, and a plurality of soil cutting teeth are provided in the soil cutting tooth belts; the soil cutting teeth are tooth-like structures formed by protrusions on a part of the wall surface of the soil cutting cylinder; the soil cutting teeth form holes on the soil cutting cylinder that are connected to the interior thereof, and are used to collect the crushed soil into the soil cutting cylinder.
[0008] The soil-cutting cylinder is evenly provided with a plurality of soil-breaking tooth belts arranged in a spiral pattern, and the soil-breaking tooth belt is provided with a plurality of soil-breaking teeth; the soil-breaking tooth belt is spaced apart from the soil-cutting tooth belt.
[0009] The soil cutting cylinder is composed of two half cylinders; one side where the two half cylinders are connected is provided with a plurality of mechanical buckles for fixing, and the opposite side is provided with a plurality of hinge connection structures for fixing.
[0010] The material of the earth-breaking teeth, hinge connection structure and mechanical buckle is high-hardness tungsten alloy steel.
[0011] A plurality of soil breaking teeth are evenly arranged on the circumference of the milling disc.
[0012] The soil breaking teeth on the milling disc close to the soil cutting cylinder are bent 90 degrees toward the side close to the soil cutting cylinder.
[0013] The rotation directions of the two adjacent transmission shafts are opposite.
[0014] A plurality of guide rails are arranged at the lower end of the chassis, one group of guide rails includes two guide rails arranged relatively on both sides of the lower end of the chassis, a movable bracket is slidably connected to the guide rails, and the two movable brackets fixed on one group of guide rails support the same transmission shaft; the hydraulic system is connected to the movable bracket.
[0015] The material of the milling disc is high-hardness alloy steel; the material of the soil-cutting cylinder is titanium alloy.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] The utility model discloses a rectangular hole-forming device for rectangular support pile construction. The connecting rod in the earth-breaking device is connected to the lifting drill when working. The lifting drill gives the earth-breaking device a vertical downward force. The hydraulic system provides a rotational force for the transmission shaft. The transmission shaft drives the soil-cutting cylinder and the milling disc to rotate, which is used to crush and dig hard nodules or small blocks in the soil. The outer wall of the milling disc is also used to mill and level the hole wall. The present invention has important value for hole-forming during the construction of rectangular support piles in areas with relatively hard soil.
[0018] Furthermore, the wall of the soil cutting cylinder is provided with soil breaking tooth belts and soil cutting tooth belts at intervals. The soil cutting teeth are oblique sharp steel blades and small openings, which are used to collect the soil debris generated by the rotation of the soil cutting cylinder during the hole forming process into the inside of the drum. At the same time, the soil cutting cylinder is provided with a spiral soil breaking tooth belt, which is also used to crush and dig stones during the rolling process of the drum.
[0019] Furthermore, the soil cutting cylinder is composed of two half cylinders; one side of the two half cylinders is provided with a plurality of mechanical buckles for fixing, and the opposite side is provided with a plurality of hinge connection structures for fixing. The soil cutting cylinder can be opened, and when the soil in the soil cutting cylinder fills the soil cutting cylinder, the whole device is lifted from the hole, the soil cutting cylinder is opened to dump the soil inside, and after completion, it is lowered back into the hole to continue digging.
[0020] Furthermore, several groups of guide rails are arranged at the lower end of the chassis, and one group of guide rails includes two guide rails relatively arranged on both sides of the lower end of the chassis, and a mobile bracket is slidably connected to the guide rails. The two mobile brackets fixed on one group of guide rails support the same transmission shaft, and the hydraulic system is connected to the mobile bracket. The hydraulic system controls the movement of the mobile bracket on the guide rails to adjust the distance between adjacent cutting barrels, thereby realizing the control of the hole size. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 It is a schematic diagram of the overall structure of a rectangular hole-forming device used for rectangular support pile construction in the utility model;
[0023] Figure 2 It is a schematic diagram of a hinge connection structure on a soil cutting cylinder of a rectangular hole-forming device used for rectangular support pile construction in the utility model;
[0024] Figure 3 It is a schematic diagram of a mechanical buckle structure on a soil cutting cylinder of a rectangular hole-forming device used for rectangular support pile construction in the utility model;
[0025] Figure 4 It is a side view of a rectangular hole-forming device used for rectangular support pile construction in the utility model;
[0026] Figure 5 It is a side view of a milling disc of a rectangular hole-forming device used for rectangular support pile construction in the utility model;
[0027] Figure 6 The utility model is a schematic diagram of the connection between a rectangular hole-forming device and a main machine for rectangular support pile construction.
[0028] Among them: 1-connecting rod; 2-milling disc; 3-movable bracket; 4-soil cutting cylinder; 5-soil cutting teeth; 6-soil breaking teeth; 7-guide rails; 8-chassis; 9-transmission shaft; 10-hydraulic pipe; 11-hinge connection structure; 12-mechanical buckle. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0032] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0033] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0034] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0035] The utility model is further described in detail below with reference to the accompanying drawings:
[0036] See also Figure 1 , Figure 4 and Figure 6 This embodiment discloses a rectangular hole-forming device for rectangular support pile construction, including a main machine 13 and a soil-breaking device; the main machine 13 is provided with a control system and a hydraulic system connected to each other; the soil-breaking device includes a connecting rod 1 connected to a lifting drill during operation, the lower end of the connecting rod 1 is connected to a chassis 8, the lower end of the chassis 8 is provided with a plurality of guide rails 7, a group of guide rails 7 includes two guide rails 7 relatively arranged on both sides of the lower end of the chassis 8, a mobile bracket 3 is slidably connected to the guide rail 7, and the two mobile brackets 3 fixed on a group of guide rails 7 support the same transmission shaft 9; the rotation directions of the two adjacent transmission shafts 9 are opposite. The hydraulic system is connected to the mobile bracket 3, and the hydraulic system controls the mobile bracket to move on the guide rail, which is used to adjust the distance between adjacent soil-cutting barrels, thereby realizing the control of the hole size; the soil-cutting barrel 4 is fixedly connected to the transmission shaft 9, and the two ends of the transmission shaft 9 are fixedly connected to the milling disc 2; the hydraulic system is connected to the transmission shaft 9. The soil cutting tube 4 is evenly provided with a number of soil cutting tooth belts arranged in a spiral, and a number of soil cutting teeth 5 are arranged in the soil cutting tooth belt; the soil cutting teeth 5 are tooth-like structures formed by the protrusion of a part of the wall surface of the soil cutting tube 4; the soil cutting teeth 5 form holes on the soil cutting tube 4 that are connected to the inside thereof, and are used to collect the crushed soil into the soil cutting tube 4. The soil breaking tooth belts are evenly provided with a number of soil breaking tooth belts arranged in a spiral, and a number of soil breaking teeth 6 are arranged in the soil breaking tooth belt; the soil breaking tooth belt and the soil cutting tooth belt are arranged at intervals. The connecting rod in the soil breaking device is connected to the lifting drill when working, and the lifting drill gives the soil breaking device a vertical downward force, and the hydraulic system provides a rotational force for the transmission shaft, and the transmission shaft drives the soil cutting tube and the milling disc to rotate, which is used to crush and excavate hard nodules or small boulders in the soil, and the outer wall of the milling disc is also used to mill and level the hole wall. The present invention has important value for hole formation during the construction of rectangular support piles in areas with relatively hard soil.
[0037] See also Figure 2 and Figure 3The soil cutting cylinder 4 is composed of two semi-cylinders; one side of the two semi-cylinders is provided with a plurality of mechanical buckles 12 for fixing, and the opposite side is provided with a plurality of hinge connection structures 11 for fixing. The soil breaking teeth 6, the hinge connection structure 11 and the mechanical buckle 12 are made of high-hardness alloy tungsten steel. The soil cutting cylinder can be opened. When the soil in the soil cutting cylinder fills the soil cutting cylinder, the whole device is lifted from the hole, the soil cutting cylinder is opened to dump the soil inside, and after completion, it is lowered back into the hole to continue digging.
[0038] See also Figure 5 A plurality of earth-breaking teeth 6 are evenly arranged on the circumference of the milling disc 2. The earth-breaking teeth 6 on the milling disc 2 near the earth-cutting cylinder 4 are bent 90° toward the side near the earth-cutting cylinder 4. The milling disc 2 is made of high-hardness alloy steel; the earth-cutting cylinder 4 is made of titanium alloy.
[0039] The working process of the present invention is described below in conjunction with specific embodiments:
[0040] The cutting barrel 4 and the milling disc 2 of the utility model are driven by hydraulic drive. The hydraulic system of the main machine 13 is connected to the hydraulic motor arranged inside the earth-breaking device through a hydraulic pipe 10, and the power required for cutting rotation is transmitted to the transmission shaft 9. The transmission shaft 9 drives the milling disc 2 and the cutting barrel 4 to rotate, completing the excavation of the soil and the cleaning and milling of the holes.
[0041] The horizontal distance between the two soil cutting cylinders 4 can be adjusted by the translation of the mobile bracket 3. The mobile bracket 3 is connected to the chassis 8 through the guide rail 7. The control of the mobile bracket 3 is operated by the host control system. The mobile bracket 3 moves horizontally along the guide rail. After reaching the specified position, the control system locks it through the hydraulic device to prevent movement during the cutting process.
[0042] The side wall of the milling disc 2 is smooth and flat, which is convenient for trimming the hole wall. The milling disc 2 is evenly distributed with 3 rows of soil breaking teeth along the circumference, with 48 teeth in each row. The soil breaking teeth close to the soil cutting cylinder 4 have an inward bending angle of 90° to avoid the formation of missed soil columns between the soil cutting cylinder and the milling disc during the vertical cutting of the soil. The milling disc is made of high-hardness alloy steel, and the soil breaking teeth are made of high-hardness alloy tungsten steel.
[0043] The soil-breaking teeth 6 are arranged in a spiral on the soil-breaking tube 4 to form a soil-breaking tooth belt, and eight soil-breaking teeth 5 are evenly distributed between two adjacent soil-breaking tooth belts. There are a total of seven rows of soil-breaking teeth along the axial direction of the soil-breaking tube.
[0044] During operation, the rotation speed and direction of the cutting barrel 4 and the milling disk 2 on the same transmission shaft 9 are the same, and the two cutting barrels 4 and the milling disk 2 on different axes have the same rotation speed during the cutting process, but the rotation directions are opposite. In the process of cutting soil and rock, the breaking teeth 6 are used to break the rock and soil into small pieces and roll them upward, and the crushed soil is collected into the cutting barrel by the cutting teeth 5 on the cutting barrel.
[0045] The material of the soil chipping cylinder is titanium alloy with light weight and high hardness.
[0046] When the barrel is filled with soil, the rectangular hole-forming device is lifted above the ground, the soil-cutting barrel 4 is opened, and the soil is dumped. A row of three mechanical buckles 12 are arranged around the barrel along the axis of the barrel body, and a row of three hinge connection structures 11 are arranged on the opposite side of the mechanical buckle. When the mechanical buckle 12 is opened, the soil-cutting barrel can be configured into two half-barrels connected by the hinge connection structure 11, which is used to dump the soil in the soil-cutting barrel 4. The mechanical buckle 12 and the hinge connection structure 11 are both made of high-hardness alloy tungsten steel.
[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A rectangular hole-forming device for rectangular support pile construction, characterized in that: The invention comprises a main machine (13) and a soil-breaking device; the main machine (13) is provided with a control system and a hydraulic system which are interconnected; the soil-breaking device comprises a connecting rod (1) which is connected to a lifting drill when in operation; the lower end of the connecting rod (1) is connected to a chassis (8); the lower end of the chassis (8) is provided with a plurality of groups of brackets; the group of brackets comprises two brackets which are relatively arranged on both sides of the lower end of the chassis (8); the group of brackets supports a same transmission shaft (9); a soil-cutting cylinder (4) is fixedly connected to the transmission shaft (9); and milling discs (2) are fixedly connected to both ends of the transmission shaft (9); the hydraulic system is connected to the transmission shaft (9).
2. The rectangular hole-forming equipment for rectangular support pile construction according to claim 1 is characterized in that: The soil cutting cylinder (4) is evenly provided with a plurality of soil cutting tooth belts arranged in a spiral pattern, and a plurality of soil cutting teeth (5) are provided in the soil cutting tooth belts; the soil cutting teeth (5) are tooth-shaped structures formed by protrusions on a part of the wall surface of the soil cutting cylinder (4); the soil cutting teeth (5) are formed with holes on the soil cutting cylinder (4) that are in communication with the interior thereof, and are used to collect crushed soil into the soil cutting cylinder (4).
3. The rectangular hole-forming equipment for rectangular support pile construction according to claim 2 is characterized in that: The soil-cutting cylinder (4) is evenly provided with a plurality of soil-breaking tooth belts arranged in a spiral pattern, and a plurality of soil-breaking teeth (6) are arranged in the soil-breaking tooth belt; the soil-breaking tooth belt and the soil-cutting tooth belt are arranged at intervals.
4. The rectangular hole-forming equipment for rectangular support pile construction according to claim 3 is characterized in that: The soil-cutting cylinder (4) is composed of two semi-cylinders; one side where the two semi-cylinders are connected is provided with a plurality of mechanical buckles (12) for fixing, and the opposite side is provided with a plurality of hinge connection structures (11) for fixing.
5. The rectangular hole-forming equipment for rectangular support pile construction according to claim 4, characterized in that: The material of the soil breaking teeth (6), the hinge connection structure (11) and the mechanical buckle (12) is high-hardness tungsten alloy steel.
6. The rectangular hole-forming equipment for rectangular support pile construction according to claim 1, characterized in that: A plurality of soil breaking teeth (6) are evenly arranged on the periphery of the milling disc (2).
7. The rectangular hole-forming equipment for rectangular support pile construction according to claim 6, characterized in that: The soil breaking teeth (6) on the milling disc (2) close to the soil cutting cylinder (4) are bent 90 degrees towards the side close to the soil cutting cylinder (4).
8. The rectangular hole-forming equipment for rectangular support pile construction according to claim 1, characterized in that: The two adjacent transmission shafts (9) rotate in opposite directions.
9. The rectangular hole-forming equipment for rectangular support pile construction according to claim 1, characterized in that: A plurality of guide rails (7) are arranged at the lower end of the chassis (8), one guide rail (7) comprising two guide rails (7) arranged relatively on both sides of the lower end of the chassis (8), a movable bracket (3) is slidably connected to the guide rails (7), and the two movable brackets (3) fixed on the one guide rail (7) support the same transmission shaft (9); the hydraulic system is connected to the movable bracket (3).
10. The rectangular hole-forming equipment for rectangular support pile construction according to claim 1, characterized in that: The material of the milling disc (2) is high-hardness alloy steel; the material of the soil-cutting cylinder (4) is titanium alloy.