A hole centering device for foundation hole construction

Abstract

The present application provides a hole centering device for foundation hole construction, including a steel ring, a level, a centering pointer and a retractable steel pipe support leg; the level is located on the side of the steel ring away from the center and is fixedly connected to the steel ring; the centering pointer includes multiple ones, one end of each centering pointer is located on the side of the steel ring close to the center and is rotatably connected to the steel ring, and the other end points to the center; multiple centering pointers are evenly distributed along the circumference of the steel ring; the number of retractable steel pipe support legs is multiple, and multiple retractable steel pipe support legs are distributed in an array along the circumference of the steel ring, and the retractable steel pipe support legs are fixedly connected to the bottom surface of the steel ring. The device can meet the high-precision requirements of the flat single-axis tracking bracket pile foundation, has a simple structure, is easy to operate, can be recycled, has low material cost, improves the centering quality of the hole, avoids the deviation of the hole, and is economical and practical.

Description

Technical Field

[0001] The present application relates to the field of foundation construction, and in particular to a hole centering device used in foundation boring construction. Background Art

[0002] The flat single-axis tracking bracket is a device used in solar photovoltaic power generation systems. It is designed to track the angle of sunlight so that the solar panel always faces the sun, thereby maximizing the reception of solar radiation energy. When installing the flat single-axis tracking bracket, the installation foundation must be flat and solid, and H-shaped steel piles are often used as pile foundations during construction. Under the influence of some geological conditions, the direct static pressure method is likely to cause deformation and distortion of H-shaped steel piles. Therefore, the method of first drilling and then pressing can be used for construction. During the hole construction process, the error between the end plane of the pile foundation of the flat single-axis tracking bracket and the center line of the pile is no more than 3mm, and high precision is required. In the traditional installation method, the method of measuring and placing points first and then drilling directly with a hole drilling rig is adopted. This installation method is prone to excessive deviation of the hole, and the accuracy does not meet the requirements. The subsequent flat single-axis tracking bracket has a large installation deviation. Utility Model Content

[0003] The embodiment of the present application provides a hole centering device for foundation boring construction, so as to solve the problem of hole centering device in flat single-axis tracking bracket pile foundation boring construction.

[0004] An embodiment of the present application provides a hole mouth centering device for foundation borehole construction, comprising a steel ring, a level, a centering pointer and a retractable steel pipe support leg; the level is located on the side of the steel ring away from the center of the circle and is fixedly connected to the steel ring; the centering pointer comprises a plurality of pointers, one end of each centering pointer is arranged on the side of the steel ring close to the center of the circle and is rotatably connected to the steel ring, and the other end points to the center of the circle; the plurality of centering pointers are evenly distributed along the circumference of the steel ring; the number of the retractable steel pipe support legs is plural, the plurality of retractable steel pipe support legs are distributed in an array along the circumference of the steel ring, and the retractable steel pipe support legs are fixedly connected to the bottom surface of the steel ring.

[0005] In a feasible implementation, it also includes a non-fixed axis hinge, and the centering pointer is rotatably connected to the steel ring through the non-fixed axis hinge.

[0006] In a feasible implementation, it also includes a support rod and a support ring; the steel ring is provided with a threaded hole, one end of the two support rods is connected to the inner side of the steel ring, and is symmetrically arranged on both sides of the threaded hole; one end of the two support rods close to the center of the steel ring is connected to a support ring, one end of the centering pointer is provided with an external thread, and the centering pointer is threadedly connected to the threaded hole.

[0007] In a feasible implementation, the telescopic steel tube support leg includes a sleeve and a telescopic rod; one end of the telescopic rod is provided with a hemispherical buckle, the sleeve is provided with a circular bayonet, and the hemispherical buckle is engaged with the circular bayonet.

[0008] In a feasible implementation, it also includes a fixing block, the fixing block is provided with a connecting ear, the connecting ear is provided with a connecting hole, the distance between the two connecting ears is the same as the diameter of the telescopic rod, and the end of the telescopic rod away from the hemispherical buckle is provided with a fixing hole, and the bolt passes through the fixing hole and the connecting hole to be threadedly connected with the matching nut.

[0009] In a feasible implementation, the end of the centering pointer close to the steel ring is a conical structure.

[0010] In a feasible implementation, the wall thickness of the steel ring is 5 mm.

[0011] The present application provides a hole mouth centering device for foundation borehole construction, comprising a steel ring, a level, a centering pointer and a retractable steel pipe support leg; the level is located on the side of the steel ring away from the center and is fixedly connected to the steel ring; there are multiple centering pointers, one end of each centering pointer is located on the side of the steel ring close to the center and is rotatably connected to the steel ring, and the other end points to the center; the multiple centering pointers are evenly distributed along the circumference of the steel ring; the number of retractable steel pipe support legs is multiple, the multiple retractable steel pipe support legs are distributed in an array along the circumference of the steel ring, and the retractable steel pipe support legs are fixedly connected to the bottom surface of the steel ring. The device uses a steel ring and a centering pointer to accurately control the centering of the drill bit of the drilling rig, thereby avoiding deviation of the drilling rig; the telescopic steel tube support legs are used to adjust the circular level bubble of the level to center the steel ring to adapt to the slope of mountain terrain; the built-in hemispherical buckles are used to adjust the shell telescopic steel tube support legs. The device can be used for the centering of the hole mouth in the construction of flat single-axis tracking bracket pile foundation in high-altitude mountains, and can meet the high-precision requirements of the flat single-axis tracking bracket pile foundation. It has a simple structure, is easy to operate, can be recycled, has low material cost, improves the quality of the hole centering, avoids hole deviation, and is economical and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] Figure 1 It is a top view schematic diagram of a hole centering device for foundation hole construction provided in an embodiment of the present application;

[0014] Figure 2It is a top view schematic diagram of a hole centering device for foundation boring construction provided by another embodiment of the present application;

[0015] Figure 3 It is a side view schematic diagram of a hole centering device for foundation boring construction provided in an embodiment of the present application;

[0016] Figure 4 It is a schematic diagram of the structure of the telescopic steel tube support leg;

[0017] Figure 5 It is a schematic diagram of the telescopic rod structure.

[0018] Description of reference numerals:

[0019] Among them, 1-steel ring; 11-threaded hole; 111-support rod; 112-support ring; 2-level; 3-centering pointer; 31-non-fixed axis hinge; 4-retractable steel pipe support leg; 41-sleeve; 411-circular bayonet; 42-telescopic rod; 421-hemispherical buckle; 422-fixing hole; 43-fixing block; 431-connecting ear; 4311-connecting hole. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0021] A flat single-axis tracking bracket is a device used in solar photovoltaic power generation systems. It is designed to track the angle of sunlight so that the solar panel always faces the sun, thereby maximizing the reception of solar radiation energy.

[0022] The Lianghekou Hydropower Station Water-Photovoltaic Complementary Project is currently the world's largest water-photovoltaic complementary project and the highest altitude water-photovoltaic complementary project. The first phase of the Lianghekou Hydropower Station Water-Photovoltaic Complementary Project, the Water-Photovoltaic-Pastoral Complementary Photovoltaic Power Station, is located in Kela Township in the west of Yajiang County. The project scale is 1000MW. The photovoltaic power station contains a total of 312 photovoltaic arrays and 2122008 monocrystalline silicon bifacial battery modules of no less than 540Wp. In areas with relatively flat terrain, 149 3.2MW flat single-axis tracking photovoltaic brackets + bifacial module monocrystalline silicon module arrays are used. In areas with relatively steep terrain, 163 3.2MW double-column fixed brackets + bifacial module monocrystalline silicon module arrays are used.

[0023] The flat single-axis tracking bracket pile foundation of this project uses W8×15 H-shaped steel piles. Affected by geological conditions, the direct static pressure method is prone to deformation and distortion of the H-shaped steel piles. In order to ensure the quality of the H-shaped steel piles, the method of first drilling and then pressing the piles is adopted for construction. According to the requirements of the design drawings, the error between the end plane of the flat single-axis tracking bracket pile foundation and the pile centerline is no more than 3mm, and the accuracy requirement is high. After using the traditional measurement and placement, the direct drilling of the hole by the hole drilling rig is prone to excessive hole position deviation, and the accuracy does not meet the requirements, which will cause a large installation deviation for the subsequent flat single-axis tracking bracket.

[0024] The device can be used for hole centering in the construction of flat single-axis tracking bracket pile foundation in high-altitude mountainous areas. It can meet the high-precision requirements of flat single-axis tracking bracket pile foundation. It has a simple structure, is easy to operate, can be recycled, has low material cost, improves the quality of hole centering, avoids hole deviation, and is economical and practical.

[0025] The specific structure of the hole centering device for foundation drilling construction provided by the present application is described in detail below in conjunction with the accompanying drawings.

[0026] Reference Figure 1 and Figure 3 As shown, an embodiment of the present application provides a hole centering device for foundation borehole construction, comprising a steel ring 1, a level 2, a centering pointer 3 and a retractable steel pipe support leg 4; the level 2 is located on the side of the steel ring 1 away from the center of the circle and is fixedly connected to the steel ring 1; the centering pointer 3 includes a plurality of pointers, one end of each centering pointer 3 is arranged on the side of the steel ring 1 close to the center of the circle and is rotatably connected to the steel ring 1, and the other end points to the center of the circle; the plurality of centering pointers 3 are evenly distributed along the circumference of the steel ring 1; the number of the retractable steel pipe support legs 4 is plural, and the plurality of retractable steel pipe support legs 4 are distributed in a circular array along the steel ring 1, and the retractable steel pipe support legs 4 are fixedly connected to the bottom surface of the steel ring 1.

[0027] The steel ring 1, as the main frame of the entire device, must have sufficient strength and stability. A level 2 is fixed on the outside of the steel ring 1. When in use, the level of the steel ring 1 is determined by observing whether the bubble in the level 2 is centered to ensure the accuracy of the centering operation. The bottom surface of the steel ring 1 is installed with a retractable steel pipe support leg 4. When the slope is constructed, the level of the steel ring 1 is adjusted by adjusting the length of the retractable steel pipe support leg 4. Multiple retractable steel pipe support legs 4 are provided and distributed in an array along the circumference of the steel ring 1, further enhancing the stability of the structure.

[0028] One of the key components of the device for centering pointer 3, refer to Figure 1As shown, in some embodiments, a non-fixed axis hinge 31 is further included, and the centering pointer 3 is rotatably connected to the steel ring 1 through the non-fixed axis hinge 31. The centering pointer 3 points to the center of the circle, and the construction personnel can quickly adjust the direction of the centering pointer 3 by simply rotating it, and fix it in the desired position through the locking mechanism of the non-fixed axis hinge 31. This quick adjustment and fixing function makes the construction process more convenient and efficient.

[0029] Reference Figure 2 As shown, in some embodiments, it also includes a support rod 111 and a support ring 112; the steel ring 1 is provided with a threaded hole 11, one end of the two support rods 111 is connected to the inner side of the steel ring 1, and are symmetrically arranged on both sides of the threaded hole 11; the end of the support rod 111 close to the center of the steel ring 1 is connected to the support ring 112, one end of the centering pointer 3 is provided with an external thread, and the centering pointer 3 is threadedly connected to the threaded hole 11.

[0030] In this embodiment, the centering pointer 3 is adjusted in position by rotation to complete the centering of the hole. The introduction of the support rod 111 and the support ring 112 provides additional support and fixing points for the centering pointer 3, increases the stability of the centering pointer 3 on the steel ring 1, makes the centering pointer more accurate and reliable when pointing and fixing, and reduces the offset and error caused by external factors. After the centering pointer 3 is adjusted and centered, the centering pointer 3 is rotated to expand the distance between the centering pointer 3 and the center of the steel ring 1, the drilling rig is in place, and the rotary head enters the adjusted fine-level steel ring to perform centering and drilling, thereby ensuring the accuracy requirements of the flat single-axis tracking bracket pile foundation.

[0031] Reference Figure 3 As shown, in some embodiments, the telescopic steel tube support leg 4 includes a sleeve 41 and a telescopic rod 42; one end of the telescopic rod 42 is provided with a hemispherical buckle 421, and the sleeve 41 is provided with a circular bayonet 411, and the hemispherical buckle 421 is engaged with the circular bayonet 411.

[0032] Reference Figure 4 and Figure 5 As shown, in some embodiments, a fixing block 43 is further included, the fixing block 43 is provided with a connecting ear 431, the connecting ear 431 is provided with a connecting hole 4311, the distance between the two connecting ears 431 is the same as the diameter of the telescopic rod 42, the end of the telescopic rod 42 away from the hemispherical buckle 421 is provided with a fixing hole 422, and the bolt passes through the fixing hole 422 and the connecting hole 4311 and is threadedly connected with the matching nut. The clamping design of the hemispherical buckle 421 and the circular bayonet 411 makes the connection between the telescopic rod 42 and the sleeve 41 quick and easy. Construction personnel can quickly complete the installation and disassembly of the support leg, saving construction time and improving work efficiency.

[0033] In some embodiments, one end of the centering pointer 3 close to the steel ring 1 is a conical structure.

[0034] In some embodiments, the wall thickness of the steel ring 1 is 5 mm.

[0035] According to the above technical features, the method of using the hole centering device for foundation hole construction provided by the present application in an actual application scenario is:

[0036] After measuring and placing the point, place the device at the point, initially center the centering pointer 3 at the point, adjust the telescopic steel pipe support leg 4 to center the circular level bubble according to the actual terrain slope on site, and then center the centering pointer 3 with the measuring point. After adjusting the centering, fold the centering pointer 3 outward, and after the hole drilling rig is in place, the drill bit enters the adjusted fine-level steel ring to center the hole, thereby ensuring the accuracy requirements of the flat single-axis tracking bracket pile foundation.

[0037] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0038] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A hole centering device for foundation hole construction, characterized in that: It comprises a steel ring (1), a level (2), a centering pointer (3) and a retractable steel tube support leg (4); the level (2) is located on the side of the steel ring (1) away from the center and is fixedly connected to the steel ring (1); the centering pointer (3) comprises a plurality of pointers, one end of each centering pointer (3) is located on the side of the steel ring (1) close to the center and is rotatably connected to the steel ring (1), and the other end points to the center; the plurality of centering pointers (3) are evenly distributed along the circumference of the steel ring (1); the number of the retractable steel tube support legs (4) is plural, the plurality of retractable steel tube support legs (4) are distributed in an array along the circumference of the steel ring (1), and the retractable steel tube support legs (4) are fixedly connected to the bottom surface of the steel ring (1).

2. The hole centering device for foundation hole construction according to claim 1 is characterized in that: It also comprises a non-fixed axis hinge (31), and the centering pointer (3) is rotatably connected to the steel ring (1) via the non-fixed axis hinge (31).

3. The hole centering device for foundation hole construction according to claim 1, characterized in that: It also includes a support rod (111) and a support ring (112); the steel ring (1) is provided with a threaded hole (11), one end of the two support rods (111) is connected to the inner side of the steel ring (1), and the two support rods (111) are symmetrically arranged on both sides of the threaded hole (11); one end of the two support rods (111) close to the center of the steel ring (1) is connected to the support ring (112), one end of the centering pointer (3) is provided with an external thread, and the centering pointer (3) is threadedly connected to the threaded hole (11).

4. The hole centering device for foundation hole construction according to claim 1, characterized in that: The telescopic steel tube support leg (4) comprises a sleeve (41) and a telescopic rod (42); one end of the telescopic rod (42) is provided with a hemispherical buckle (421), the sleeve (41) is provided with a circular bayonet (411), and the hemispherical buckle (421) is engaged with the circular bayonet (411).

5. The hole centering device for foundation hole construction according to claim 4, characterized in that: The invention also comprises a fixing block (43), wherein the fixing block (43) is provided with a connecting ear (431), wherein the connecting ear (431) is provided with a connecting hole (4311), wherein the distance between the two connecting ears (431) is the same as the diameter of the telescopic rod (42), and wherein one end of the telescopic rod (42) away from the hemispherical buckle (421) is provided with a fixing hole (422), and a bolt passes through the fixing hole (422) and the connecting hole (4311) and is threadedly connected with a matching nut.

6. The hole centering device for foundation hole construction according to claim 1, characterized in that: The end of the centering pointer (3) close to the steel ring (1) is a conical structure.

7. The hole centering device for foundation hole construction according to claim 1, characterized in that: The wall thickness of the steel ring (1) is 5 mm.

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