Digital display weld leg detection ruler

Abstract

A digital display weld leg detection ruler disclosed by the present invention comprises a ruler body, the ruler body is provided with a ruler head and a photoelectric detection module, the ruler head is rotatably connected to one end of the ruler body, and the photoelectric detection module is located on the rotation path of the ruler head and is used for detecting the rotation displacement of the ruler head relative to the ruler body. And the displacement is converted into a weld leg size value for digital display. According to the invention, the photoelectric measurement technology is used for replacing the traditional naked eye reading, and the problems of difficult reading and large deviation of the existing weld leg detection ruler under the condition of poor light or complex environment are effectively solved. Meanwhile, the locking nut can lock the ruler head and prevent slippage during measurement, so that the measurement accuracy and the operation convenience are further ensured, and the device is particularly suitable for welding seam quality detection in steel structure engineering.

Description

Technical Field

[0001] This invention relates to the field of weld inspection tools, and more specifically to a digital display weld foot inspection ruler. Background Technology

[0002] In the fabrication and installation of steel structures, weld leg size is one of the key parameters for measuring weld quality and ensuring structural strength. Currently, the industry mostly uses mechanical weld leg measuring rulers for measurement, which typically rely on the operator to visually read the scale values ​​on the ruler.

[0003] However, this traditional testing method has significant drawbacks: First, in construction sites with insufficient light, narrow testing spaces, or complex environments, the scale lines are difficult to see, making readings extremely difficult. Second, due to parallax in the scale markings themselves and different reading habits among different operators, large human reading deviations are easily introduced, directly affecting the reliability and impartiality of the test results. Furthermore, most conventional measuring rulers lack effective locking mechanisms, allowing the ruler head to easily move or slip after positioning, which not only inconveniences operation but also further exacerbates measurement errors.

[0004] Therefore, developing a weld bead inspection tool that can achieve rapid, accurate, and intuitive readings and stably maintain the measurement state has become an urgent technical problem to be solved in this field. Summary of the Invention

[0005] This invention provides a digital weld leg inspection ruler to solve the problems of difficult reading, large deviation, and easy slippage of traditional weld leg inspection rulers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a digital display weld foot inspection ruler, comprising a ruler body, a ruler head and a photoelectric detection module disposed on the ruler body, the ruler head being rotatably connected to one end of the ruler body, and the photoelectric detection module being located on the rotation path of the ruler head, used to detect the rotational displacement of the ruler head relative to the ruler body, and convert the displacement amount into a weld foot size value for digital display.

[0007] Furthermore, the ruler head is generally arranged in an "A" shape, with its first foot rotatably connected to the ruler body by a fixing bolt, and its tip forming a measuring point for contacting the weld. Its second foot is an outwardly protruding arc-shaped structure.

[0008] Furthermore, the photoelectric detection module is a grating digital display module, which is fixedly connected to the ruler body. Its inner side is provided with a groove that is adapted to and fits the arc-shaped structure of the second foot of the ruler head. The grating digital display module is provided with a grating sensor for detecting displacement.

[0009] Furthermore, the photoelectric detection module is equipped with a locking mechanism, and the locking end can move toward the second foot of the ruler head and apply pressure to lock the relative position of the ruler head and the ruler body.

[0010] Furthermore, the locking mechanism is a locking nut. A screw hole is provided on the outer side of the photoelectric detection module, and the locking nut is screwed into the screw hole. Its inner end face forms the locking end. By screwing in the locking nut, its inner end face is pressed against the arc surface of the second foot of the ruler head. When the ruler head rotates to the target measurement position, tightening this locking nut firmly presses its front end against the arc-shaped second foot of the ruler head, thereby completely locking the relative position of the ruler head and the ruler body. This effectively prevents slippage during reading or movement, ensuring measurement accuracy.

[0011] Furthermore, the ruler body and ruler head are made of 304 stainless steel, ensuring that the measuring ruler has excellent rigidity, outstanding corrosion resistance, and long-lasting durability to adapt to harsh industrial environments.

[0012] Furthermore, the photoelectric detection module is fixedly connected to the ruler body by rivets or screws.

[0013] In summary, compared with the prior art, the present invention has the following beneficial effects: 1. Precise and intuitive measurement: The grating digital display technology directly displays the results digitally, fundamentally eliminating parallax and errors caused by naked-eye readings and significantly improving measurement accuracy; 2. Stable and efficient operation: The integrated locking mechanism can instantly lock the measurement position, effectively prevent slippage, ensure stable measurement status, and improve the convenience and efficiency of operation; 3. Robust and durable structure: The ruler body and head are made of high-quality stainless steel, ensuring the tool's rigidity, corrosion resistance, and long service life in harsh industrial environments. Attached Figure Description

[0014] Figure 1 , Figure 2 This is a schematic diagram of the detection ruler structure of the present invention; Figure 3 , Figure 4 This is a diagram showing the usage state for measuring the height of the solder joint.

[0015] Attached diagram labels: 100, ruler body; 101, ruler head; 102, fixing bolt; 103, locking nut; 200, photoelectric detection module. Detailed Implementation

[0016] The following is in conjunction with the appendix Figures 1 to 4 The specific implementation of the digital display weld foot detection ruler of the present invention will be described in further detail.

[0017] A digital display weld foot inspection ruler comprises three main parts: the ruler body 100, the ruler head 101, and the photoelectric detection module 200. The ruler body 100, a long strip structure, serves as the basic support and grip for the entire ruler, and is made of 304 stainless steel through precision grinding to ensure its straightness and stability. The ruler head 101, also made of 304 stainless steel, is designed in a unique "A" shape. Its first leg is hinged to one end of the ruler body 100 via a fixing bolt 102, allowing the ruler head 101 to rotate freely around the fixing bolt 102. The tip of the "A" shape is finely ground to form a precise measurement reference point. Its second leg is machined into a smooth, arc-shaped structure.

[0018] The photoelectric detection module 200 is securely mounted on the ruler body 100 by rivets. A groove is machined on its inner side, the shape of which perfectly matches the arc-shaped second foot of the ruler head 101. This module integrates a high-precision grating sensor and a clear digital display screen. When the ruler head 101 rotates around the fixing bolt 102, its arc-shaped second foot slides smoothly along the groove of the photoelectric detection module 200. The internal grating sensor captures this angular displacement change in real time and converts it into an electrical signal. After the signal is calculated by the processor inside the module, it is converted into a linear solder foot length value, which is then directly and accurately displayed on the digital display screen.

[0019] A screw hole is provided at the front end of the photoelectric detection module 200, and a locking nut 103 is screwed into it. When the ruler 101 is rotated to the measurement position, the locking nut 103 is tightened, and its inner end face is pressed against the arc surface of the second foot of the ruler 101, locking it by friction and fixing the measurement state.

[0020] Reference Figure 3 and Figure 4 As shown, the workflow for measuring the height of the solder pads in this invention is as follows: Loosen the locking nut 103 to allow the ruler head 101 to rotate freely; Place the lower measuring surface of the ruler 100 against the plane of the workpiece where the weld to be measured is located; Rotate the ruler head 101 so that its "A"-shaped tip touches the surface of the weld to be tested (such as the higher edge of the T-joint weld or the center high point of the fillet weld). Tighten the locking nut 103 to lock the ruler head 101; The solder joint height can be obtained by directly reading the value displayed on the screen of the photoelectric detection module 200.

[0021] The photoelectric detection module 200 detects the rotation angle of the ruler head and displays the corresponding dimensional values, such as the weld leg height h, on the screen. This process intuitively demonstrates how the present invention achieves rapid and accurate digital measurement.

[0022] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A digital display weld leg inspection ruler, characterized in that: The device includes a ruler body, a ruler head, and a photoelectric detection module. The ruler head is rotatably connected to one end of the ruler body, and the photoelectric detection module is located on the rotation path of the ruler head. It is used to detect the rotational displacement of the ruler head relative to the ruler body and convert the displacement into a welding leg size value for digital display.

2. The digital display weld leg inspection ruler according to claim 1, characterized in that: The ruler head is generally arranged in an "A" shape. Its first foot is rotatably connected to the ruler body by a fixing bolt, and its tip forms a measuring point for contacting the weld. Its second foot is an outwardly protruding arc-shaped structure.

3. The digital display weld leg inspection ruler according to claim 2, characterized in that: The photoelectric detection module is a grating digital display module. Its housing is fixedly connected to the ruler body. Its inner side is provided with a groove that is adapted to and fits the arc-shaped structure of the second foot of the ruler head. The grating digital display module is provided with a grating sensor for detecting displacement.

4. The digital display weld leg inspection ruler according to claim 1, characterized in that: The photoelectric detection module is equipped with a locking mechanism. The locking end of the locking mechanism can move toward the second foot of the ruler head and apply pressure to lock the relative position of the ruler head and the ruler body.

5. The digital display weld leg inspection ruler according to claim 4, characterized in that: The locking mechanism is a locking nut. The photoelectric detection module has a screw hole on its outer side. The locking nut is screwed into the screw hole, and its inner end face forms the locking end. By screwing in the locking nut, its inner end face is pressed against the arc surface of the second foot of the ruler.

6. The digital display weld leg inspection ruler according to claim 1, characterized in that: The ruler body and ruler head are made of 304 stainless steel.

7. The digital display weld leg inspection ruler according to claim 1, characterized in that: The photoelectric detection module is fixedly connected to the ruler body by rivets or screws.

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