A borehole positioning device

Abstract

The utility model relates to bridge maintenance field discloses a drilling positioning device, it includes, fixed mechanism, the fixed mechanism includes limiting part, the limiting part includes electromagnet and sets up the locating hole in the electromagnet inside, auxiliary mechanism, the auxiliary mechanism includes setting the centering part in the locating hole inside and sets up the traction part in the centering part inside, the centering part is used for assisting alignment drilling center, the traction part is used for taking out the centering part from the locating hole inside, through the mutual cooperation of each spare part, can make staff when setting up the crack -arresting hole, need not carrying too heavy equipment can complete the punching work, and through setting up the cylinder of different sizes, can satisfy the punching demand of different aperture crack -arresting hole, can reduce the falling risk of staff when the high altitude operation at the same time of alleviating the work burden of staff.

Description

Technical Field

[0001] This utility model relates to the field of bridge maintenance, and in particular to a drilling positioning device. Background Technology

[0002] Steel bridge decks are prone to fatigue cracking under repeated vehicle wheel loads. High-frequency cyclic stress leads to stress concentration at the weld joints of the top plate, U-ribs, and diaphragms, which initiates cracks. Cracks typically propagate along the heat-affected zone of the weld towards the web of the U-ribs or the base material of the diaphragms, causing local stiffness degradation and threatening bridge safety.

[0003] Currently, stop-hole technology is widely used, which eliminates stress concentration points by drilling holes at the crack tip to slow down crack propagation. However, drilling requires working at heights, and magnetic drills (weighing over 20kg) are difficult to transport and require magnetic attraction for positioning, increasing the risk of personnel falling and tools slipping. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is that it is difficult for workers to operate when opening crack-stopping holes.

[0005] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a drilling positioning device, which includes,

[0006] The fixing mechanism includes a limiting component;

[0007] The limiting component includes an electromagnet and a positioning hole disposed inside the electromagnet.

[0008] An auxiliary mechanism, comprising a centering component disposed inside the positioning hole, and a traction component disposed inside the centering component;

[0009] The centering component is used to assist in aligning the center of the drill hole, and the traction component is used to remove the centering component from inside the positioning hole.

[0010] In a preferred embodiment of the drilling positioning device of this utility model: the centering component includes a column disposed inside the positioning hole and a centering hole opened inside the column.

[0011] In a preferred embodiment of the drilling positioning device of this utility model: the column is made of iron, and the electromagnet generates magnetic force and attracts the column when energized.

[0012] In a preferred embodiment of the drilling positioning device of this utility model: the fixing mechanism further includes a cylinder disposed inside the positioning hole, and the cylinder is sleeved on the outside of the column.

[0013] In a preferred embodiment of the drilling positioning device of this utility model: the cylinder is made of iron, and the electromagnet generates magnetic force and attracts the cylinder when energized.

[0014] In a preferred embodiment of the drilling positioning device of this utility model: the number of cylinders is greater than or equal to 1;

[0015] When the number of cylinders is greater than or equal to 2, two adjacent cylinders are coaxially nested.

[0016] In a preferred embodiment of the drilling positioning device of this utility model: the traction component includes a groove formed inside the column body, and a traction column fixedly connected inside the groove.

[0017] In a preferred embodiment of the drilling positioning device of this utility model: the electromagnet is configured as a frustum, and the central axis of the electromagnet coincides with the central axis of the positioning hole.

[0018] The beneficial effects of this utility model are as follows: through the cooperation of various components, workers can complete the drilling work without carrying excessively heavy equipment when opening crack-stopping holes. Furthermore, by setting cylinders of different sizes, the drilling needs of crack-stopping holes of different diameters can be met, which reduces the workload of workers and lowers the risk of falls when workers are working at heights. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:

[0020] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0021] Figure 2 A schematic diagram of the fixing mechanism of this utility model is shown;

[0022] Figure 3 A schematic diagram showing the disassembled fixing mechanism of this utility model is provided;

[0023] Figure 4 A cross-sectional schematic diagram of the auxiliary mechanism of this utility model is shown;

[0024] Figure 5 A schematic diagram of the crack-stopping hole of this utility model is shown. Detailed Implementation

[0025] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0026] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0027] Reference Figures 1-5 This embodiment provides a drilling positioning device, including,

[0028] Fixing mechanism 1, which includes a limiting component 11;

[0029] The limiting component 11 includes an electromagnet 111 and a positioning hole 112 disposed inside the electromagnet 111.

[0030] When electromagnet 111 is energized, it generates a magnetic force, and the magnetic force disappears when the power is turned off.

[0031] Auxiliary mechanism 2 includes a centering component 21 disposed inside the positioning hole 112, and a traction component 22 disposed inside the centering component 21.

[0032] The centering component 21 is used to assist in aligning the center of the drill hole, and the traction component 22 is used to remove the centering component 21 from inside the positioning hole 112.

[0033] As attached Figure 5 As shown, the top plate A, the diaphragm B, and the U-rib C are welded together. The weld between the top plate A and the diaphragm B is the first weld a, the weld between the top plate A and the U-rib C is the second weld b, the weld between the diaphragm B and the U-rib C is the third weld c, and the crack extending from the third weld c to the diaphragm B is the crack d.

[0034] The diaphragm B and U-rib C are made of steel.

[0035] When a crack appears in the diaphragm B or U-rib C, the worker places the limiting component 11 on the outside of the cracked diaphragm B or U-rib C and uses the centering component 21 to position it so that the crack-stopping hole is located at the tip of the crack.

[0036] After the centering component 21 is removed by the traction component 22, the electromagnet 111 is energized so that it is attracted to the outside of the diaphragm B or U-rib C, and the drill bit of the electric drill passes through the positioning hole 112 to perform the drilling operation.

[0037] As one embodiment provided in this application, such as Figures 1-4 The centering component 21 includes a column 211 disposed inside the positioning hole 112, and a centering hole 212 opened inside the column 211.

[0038] When determining the location of the crack arrest hole, the opening point should first be determined at the crack tip. The staff can then observe through the centering hole 212 to align the center of the centering hole 212 with the opening point, thereby completing the centering operation.

[0039] As one embodiment provided in this application, such as Figures 1-5 The fixing mechanism 1 also includes a cylinder 12 disposed inside the positioning hole 112, and the cylinder 12 is sleeved on the outside of the column 211.

[0040] The number of cylinders 12 is greater than or equal to 1;

[0041] When there are two or more cylinders 12, two adjacent cylinders 12 are coaxially nested.

[0042] In this embodiment, taking a total of 8 cylinders 12 as an example, the diameter of the column 211 is selected as d1mm, and the inner diameters of the 8 cylinders 12 are d1mm, d2mm, d3mm, d4mm, d5mm, d6mm, d7mm, and d8mm respectively.

[0043] Among them, the diameter of the column 211 can be 8mm, and the inner diameters of the eight cylinders 12 can be 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm and 22mm respectively.

[0044] The staff calculated the appropriate diameter for the crack arrestor holes.

[0045] If the diameter of the anti-cracking hole is less than d1mm, after the centering operation, the column 211 can be removed by the traction component 22, and then the electromagnet 111 can be energized so that the electromagnet 111 is attracted to the outside of the transverse partition B or U-rib C, and the subsequent drilling work can be carried out, that is, the drill bit is passed through the cylinder 12 and the electric drill is started to drill.

[0046] If the diameter of the anti-crack hole is between d3mm and d4mm, the column 211 is removed by the traction component 22, and then the cylinder 12 with an inner diameter of d1mm, d2mm, or d3mm is removed. Only then can the electromagnet 111 be energized so that it is attracted to the outside of the diaphragm B or U-rib C, and the subsequent drilling work is carried out. That is, the drill bit is passed through the cylinder 12 and the electric drill is started to drill the hole.

[0047] After completing the drilling of the anti-crack hole, disconnect the power to the electromagnet 111 so that it no longer has an attractive force, and then remove the electromagnet 111 and the cylinder 12 to complete the overall drilling work.

[0048] A diagram showing the result after drilling can be found in the attached document. Figure 5 As shown.

[0049] It is worth noting that the diameter of the anti-cracking hole should be slightly smaller than the inner diameter of the cylinder 12, that is, the diameter of the drill bit should be slightly smaller than the inner diameter of the cylinder 12, in order to prevent the drill bit from rubbing against the cylinder 12 during rotation, which could cause heat generation, affect the stable installation of the cylinder 12, and make it difficult to remove iron filings.

[0050] As one embodiment provided in this application, such as Figures 1-4 The column 211 is made of iron. When the electromagnet 111 is energized, it generates magnetic force and attracts the column 211.

[0051] The cylinder 12 is made of iron. When the electromagnet 111 is energized, it generates a magnetic force and attracts the cylinder 12.

[0052] Since both the column 211 and the cylinder 12 are made of iron, after the orientation operation is completed, and the diameter of the anti-cracking hole is determined and the corresponding column 211 and cylinder 12 are removed, when the electromagnet 111 is energized, the magnetic force generated by the electromagnet 111 can not only make the electromagnet 111 adhere to the outside of the diaphragm B or U-rib C, but also make the remaining cylinder 12 that has not been removed adhere to the positioning hole 112 of the electromagnet 111. Thus, during the drilling process, the cylinder 12 is stably adhered, which facilitates the drilling operation.

[0053] As one embodiment provided in this application, such as Figures 1-4 The electromagnet 111 is configured as a frustum, and the central axis of the electromagnet 111 coincides with the central axis of the positioning hole 112.

[0054] Since the electromagnet 111 is designed as a frustum, when the electromagnet 111 is placed outside the transverse partition B or U-rib C, the structural characteristics of the frustum allow the electromagnet 111 to be placed more stably.

[0055] As one embodiment provided in this application, such as Figures 1-4 The traction component 22 includes a groove 221 formed inside the column 211, and a traction column 222 fixedly connected inside the groove 221.

[0056] When removing column 211, a thin rope can be passed through groove 221 and wrapped around the outside of traction column 222. By pulling the thin rope, the thin rope will drive column 211 upward through traction column 222, thus completing the removal of column 211.

[0057] In addition, since both the column 211 and the cylinder 12 are made of iron, they can also be attracted out by a magnet.

[0058] In summary, through the cooperation of various components, workers can complete the drilling work without carrying excessively heavy equipment when creating crack arresting holes. Furthermore, by setting up cylinders 12 of different sizes, the drilling needs of crack arresting holes of different diameters can be met, which reduces the workload of workers and lowers the risk of falls when working at heights.

[0059] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A drilling positioning device, characterized in that: include, A fixing mechanism (1) includes a limiting component (11); The limiting component (11) includes an electromagnet (111) and a positioning hole (112) disposed inside the electromagnet (111); The auxiliary mechanism (2) includes a centering component (21) disposed inside the positioning hole (112) and a traction component (22) disposed inside the centering component (21); The centering component (21) is used to assist in aligning the center of the borehole, and the traction component (22) is used to remove the centering component (21) from inside the positioning hole (112).

2. The drilling positioning device according to claim 1, characterized in that: The centering component (21) includes a column (211) disposed inside the positioning hole (112) and a centering hole (212) opened inside the column (211).

3. The drilling positioning device according to claim 2, characterized in that: The column (211) is made of iron. When the electromagnet (111) is energized, it generates magnetic force and attracts the column (211).

4. The drilling positioning device according to claim 3, characterized in that: The fixing mechanism (1) also includes a cylinder (12) disposed inside the positioning hole (112), the cylinder (12) being sleeved on the outside of the column (211).

5. The drilling positioning device according to claim 4, characterized in that: The cylinder (12) is made of iron. When the electromagnet (111) is energized, it generates magnetic force and attracts the cylinder (12).

6. The drilling positioning device according to claim 5, characterized in that: The number of the cylinders (12) is greater than or equal to 1; When the number of cylinders (12) is greater than or equal to 2, two adjacent cylinders (12) are coaxially nested.

7. The drilling positioning device according to claim 6, characterized in that: The traction component (22) includes a groove (221) formed inside the column (211) and a traction column (222) fixedly connected inside the groove (221).

8. The drilling positioning device according to claim 6 or 7, characterized in that: The electromagnet (111) is configured as a frustum, and the central axis of the electromagnet (111) coincides with the central axis of the positioning hole (112).

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