Drilling hole diameter measuring device

Abstract

The utility model discloses a drilling hole diameter measuring device, which comprises a first detection rod and a second detection rod, the first detection rod is hinged with the second detection rod, the detection rod is divided into a measuring section and a conversion section by taking a hinge point as a boundary, and the measuring section of the first detection rod and the measuring section of the second detection rod are consistent in length. A first mark point is arranged on the conversion section of the first detection rod, a second mark point is arranged on the conversion section of the second detection rod, and the distance from the first mark point to the hinge point is consistent with the distance from the second mark point to the hinge point. A first measuring scale is hinged to the first mark point. The measuring end of the detection rod is slidably connected with an extension arm along the axial direction of the detection rod. The measuring end of the detection rod is fixedly provided with a second measuring ruler, and the zero scale of the second measuring ruler is flush with the inner end of the extension arm in the contraction state.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling holes in water conservancy and hydropower engineering construction, and in particular relates to a drilling hole diameter measuring device. Background Art

[0002] In water conservancy and hydropower projects, drilling construction is required in the construction process of tunnel blasting, support, slope support, etc. Drilling technology is an important technology in the construction of water conservancy and hydropower projects. It plays a key role in the project, which can increase the speed of tunnel excavation, speed up the construction schedule, reduce construction costs, ensure construction quality and safety, and reduce construction risks.

[0003] Most of the current aperture detection devices have a large measuring range and many accessories. Although they have high accuracy, they are mainly used for laboratory measurements and are not convenient for on-site construction. Utility Model Content

[0004] The utility model provides a drilling aperture measuring device.

[0005] The embodiment of the utility model is realized through the following technical scheme: a drilling aperture measuring device, comprising a first detection rod and a second detection rod, the first detection rod and the second detection rod are hinged, the hinge point divides the first detection rod and the second detection rod into a measuring section and a conversion section, the measuring section of the first detection rod is equal to the measuring section of the second detection rod, a first marking point is set on the conversion section of the first detection rod, a second marking point is set on the conversion section of the second detection rod, and the distance from the first marking point to the hinge point is equal to the distance from the second marking point to the hinge point.

[0006] Furthermore, a first measuring ruler is hinged on the first marking point.

[0007] The measuring sections of the first detection rod and the second detection rod are connected with extension arms.

[0008] A second measuring ruler is fixedly mounted on the measuring sections of the first detection rod and the second detection rod, and when the extension arm is in the retracted state, the inner end thereof is flush with the zero scale of the second measuring ruler.

[0009] A slide groove is arranged on the inner side of the measuring section of the first detection rod and the second detection rod, the extension arm is slidably connected in the slide groove, a plurality of groups of bayonet holes are arranged in the slide groove along the slide groove direction, a mounting block is rotatably connected in the extension arm through a torsion spring, and a clamping block is installed on the side of the mounting block close to the slide groove.

[0010] It also includes a rotating scale baffle, in which an infrared rangefinder is installed, and two ends of the rotating scale baffle are respectively clamped on the first marking point and the second marking point.

[0011] Preferably, the distance from the first marking point to the hinge point is equal to the length of the measuring section.

[0012] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects: the utility model has a simple structure, is easy to carry, and is convenient for measurement in an on-site construction environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] 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.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 The utility model is equipped with an infrared rangefinder structure schematic diagram.

[0016] Figure 3 It is a schematic diagram of the bayonet and card block structure.

[0017] Icon: 1-first detection rod, 2-second detection rod, 3-first marking point, 4-second marking point, 5-first measuring scale, 6-extension arm, 7-second measuring scale, 8-rotation scale baffle, 9-data transmission interface, 10-slide, 11-mounting block, 12-torsion spring, 13-block, 14-bayonet. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] 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.

[0021] Example 1

[0022] A drilling hole diameter measuring device comprises a first detection rod 1 and a second detection rod 2 which are hinged to each other. The hinge point divides the first detection rod 1 and the second detection rod 2 into a measuring section and a conversion section. The measuring sections of the first detection rod 1 and the second detection rod 2 are equal in length. A first marking point 3 is set on the first detection rod 1, and the position from the first marking point 3 to the hinge point is the conversion section of the first detection rod 1; a second marking point 4 is set on the second detection rod 2, and the position from the second marking point 4 to the hinge point is the conversion section of the second detection rod 2. The first detection rod 1 and the second detection rod 2 are hinged together, and a first measuring ruler 5 is hinged on the first detection rod 1. When the first detection rod 1, the second detection rod 2 and the first measuring ruler 5 are rotated in the same axial direction in a non-measuring state, which can be convenient for staff to carry. In the measuring state, the first detection rod 1 and the second detection rod 2 are unfolded, and the measuring sections are respectively abutted against the inner walls of the borehole to be measured, while the conversion sections of the first detection rod 1 and the second detection rod 2 are located outside the borehole. The distance from the first marking point 3 to the second marking point 4 can be measured manually and converted after measurement.

[0023] According to the above measurement requirements, the length data from the first marking point 3 to the second marking point 4 is measured and converted to the drilling hole diameter. The conversion method is as follows Figure 1 As shown, the ratio of the length of A to the length of B is the ratio of the length data from the first marking point 3 to the second marking point 4 to the drilling hole diameter data, and the drilling hole diameter data is then converted.

[0024] Furthermore, a first measuring ruler 5 is hinged on the first marking point 3 of the first detection rod 1. By rotating the first measuring ruler 5 to the second marking point 4 of the second detection rod 2 for length measurement, the length data from the first marking point 3 to the second marking point 4 can be obtained more conveniently and directly.

[0025] An extension arm 6 is connected to the measuring sections of the first detection rod 1 and the second detection rod 2. The extension arm 6 is used to increase Figure 1The length of B in the middle can be measured by adjusting the extension arm 6 to measure a larger borehole diameter, and the extension arm 6 can be retracted inwards in the non-measuring state for the convenience of the staff to carry. A second measuring ruler 7 is fixedly installed on the measuring section of the first detection rod 1 and the second detection rod 2, and the zero scale of the second measuring ruler 7 is flush with the inner end of the extension arm 6 in the retracted state. The second measuring ruler 7 is used to measure the sliding distance of the extension arm 6 after sliding outward. The length of the measuring end of the detection rod is a preset fixed value. After sliding, the length of the second measuring ruler 7 can be increased to obtain the length of B after the extension arm 6 slides. When measuring a larger aperture, the length of the measuring section of the first detection rod 1 and the second detection rod 2 may not be enough, or the length is enough but the first detection rod 1 and the second detection rod 2 need to be opened and closed to complete the measurement, which will result in a large opening and closing degree of the conversion section, which is inconvenient to measure. By increasing the length of the measuring section by sliding the extension arm 6, the opening and closing degree of the conversion section can be reduced during measurement, which is convenient for measurement, and the measurement position of the conversion section does not need to be changed, and the measurement data of a short distance can be used for conversion.

[0026] Further, such as Figure 3 As shown, a slide groove 10 is provided inside the measuring section of the first detection rod 1 and the second detection rod 2, the extension arm 6 is slidably connected in the slide groove 10, and a plurality of groups of equally spaced bayonet holes 14 are provided in the slide groove 10 along the direction of the slide groove 10. A mounting block 11 is rotatably connected in the extension arm 6 through a torsion spring 12, and a clamping block 13 is installed on the side of the mounting block 11 close to the slide groove 10. The bayonet holes 14 are arranged at equal intervals along the axial direction of the detection rod, and are used to cooperate with the clamping block 13 on the mounting block 11 to clamp the extension arm 6 after sliding adjustment. One end of the torsion spring 12 is fixedly connected to the mounting block 11, and the other end is fixedly installed on the extension arm 6, and is used to provide a rotational thrust, as shown in FIG. Figure 2 As shown, the torsion spring 12 provides a counterclockwise thrust to tightly buckle the block 13 in the bayonet 14 to prevent the extension arm 6 from sliding again under external force and causing measurement errors. When adjustment is required, the installation block 11 is pressed clockwise to disengage the block 13 from the bayonet 14 to adjust the sliding of the extension arm 6.

[0027] Furthermore, it also includes a turntable baffle 8, which is in a hollow state, and an infrared rangefinder is installed inside the turntable baffle 8. The infrared rangefinder provides more accurate measurement and is used in an environment requiring high-precision measurement. The turntable baffle 8 can be embedded in the conversion section of the first detection rod 1 and the second detection rod 2 by snapping. During the snapping process, the transmitting end of the infrared rangefinder is aligned with the first marking point 3 of the conversion section of the first detection rod 1, and the other end is blocked by plugging the reflection block inwardly to the end of the turntable baffle 8 away from the infrared rangefinder. The blocked position is adjusted according to the position of the second marking point 4 of the second detection rod 2. The conversion end spacing is measured using an infrared rangefinder, and a data transmission interface 9 is installed on the turntable baffle 8 to facilitate data transmission and recording.

[0028] Preferably, the distance from the first marking point 3 to the hinge point is equal to the length of the measuring section, that is, the conversion ratio between A and B when the extension arm 6 is in the retracted state is one to one, and no conversion is required after measurement. The distance from the first marking point 3 to the second marking point 4 is the diameter of the drilled hole.

[0029] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A drilling aperture measuring device, characterized in that: The invention comprises a first detection rod (1) and a second detection rod (2), wherein the first detection rod (1) and the second detection rod (2) are hinged, and the hinge point divides the first detection rod (1) and the second detection rod (2) into a measuring section and a conversion section, the measuring section of the first detection rod (1) and the measuring section of the second detection rod (2) are equal in length, a first marking point (3) is arranged on the conversion section of the first detection rod (1), and a second marking point (4) is arranged on the conversion section of the second detection rod (2), and the distance from the first marking point (3) to the hinge point is equal to the distance from the second marking point (4) to the hinge point.

2. A drilling hole diameter measuring device according to claim 1, characterized in that: A first measuring ruler (5) is hingedly connected to the first marking point (3).

3. A drilling hole diameter measuring device according to claim 1, characterized in that: An extension arm (6) is connected to the measuring sections of the first detection rod (1) and the second detection rod (2).

4. A drilling hole diameter measuring device according to claim 3, characterized in that: A second measuring ruler (7) is fixedly mounted on the measuring sections of the first detection rod (1) and the second detection rod (2), and when the extension arm (6) is in a retracted state, the inner end thereof is flush with the zero scale of the second measuring ruler (7).

5. A drilling hole diameter measuring device according to claim 3, characterized in that: A slide groove (10) is arranged inside the measuring section of the first detection rod (1) and the second detection rod (2), the extension arm (6) is slidably connected in the slide groove (10), a plurality of groups of bayonet holes (14) are arranged in the slide groove (10) along the direction of the slide groove (10), a mounting block (11) is rotatably connected in the extension arm (6) via a torsion spring (12), and a bayonet block (13) is installed on a side of the mounting block (11) close to the slide groove (10).

6. A drilling hole diameter measuring device according to claim 1, characterized in that: It also comprises a rotating scale baffle (8), an infrared rangefinder is installed in the rotating scale baffle (8), and two ends of the rotating scale baffle (8) are respectively clamped on the first marking point (3) and the second marking point (4).

7. A drilling hole diameter measuring device according to claim 1, characterized in that: The distance from the first marking point (3) to the hinge point is equal to the length of the measuring section.

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