Arc length projection measuring tool

Abstract

The utility model relates to the field of arc length projection measurement, in particular to an arc length projection measurement tool. Comprising a measuring instrument, a cleaning structure is arranged on one side of the measuring instrument, the cleaning structure comprises a sliding groove, the sliding groove is formed in the measuring instrument, a sliding rod is slidably connected to the inner wall of the sliding groove, a connecting block is fixedly connected to the side, away from the measuring instrument, of the sliding rod, and a fixing plate is fixedly connected to the upper surface of the connecting block; a connecting plate is fixedly connected to the upper end of the fixing plate, a plurality of connecting frames are slidably connected to the two sides of the connecting plate, a plurality of inserting rods are slidably connected to the inner walls of the connecting frames, the inserting rods are fixedly connected with the connecting frames, and a cleaning pad is fixedly connected to the side, close to the connecting plate, of each connecting frame. The arc length projection measuring tool provided by the utility model has the advantages that the surface of the measuring instrument can be conveniently cleaned, the surface of the measuring instrument can be prevented from being eroded, and the cleaning pad can be conveniently and quickly replaced.

Description

Technical Field

[0001] This utility model relates to the field of arc length projection measurement, and in particular to an arc length projection measurement tool. Background Technology

[0002] An arc length projection measuring tool is a precision instrument commonly used to measure the arc length of curves or surfaces, and is typically applied in industries, engineering, and physics experiments. It calculates the arc length of the object being measured by projecting it onto a plane or a specific coordinate system, thus accurately measuring the curvature, length, or radius of an object or path.

[0003] Existing technologies, such as the utility model patent with publication number CN219589577U, disclose an auxiliary tool for measuring the arc length projection of a single-crystal square rod. This patent employs a main scale, a vernier scale, and a measuring component. The measuring component includes a first positioning element and a second positioning element. The main scale is connected to a first plane via the first positioning element, and the vernier scale is connected to a second plane via the second positioning element. The first and second planes are connected by an arc surface. The vernier scale can move the second positioning element on the second plane, thereby measuring the projected length of the arc surface. The beneficial effect of this utility model is that by using a thumbwheel to move the vernier scale and the second positioning element on the second plane, the side of the second positioning element can be quickly aligned with the connection between the arc surface and the second plane, thus achieving accurate measurement of the arc length projection and minimizing or avoiding quality problems caused by grinding operations at chamfered edges.

[0004] The inventors discovered in daily use that many existing arc length projection measuring tools have complex surface designs, often containing multiple grooves, tiny holes, or precision components. It is difficult to ensure that every detail is thoroughly cleaned during cleaning, and hard-to-reach areas are easily missed. The surface of the measuring tool may use special coatings or fine surface treatments, such as anti-reflective coatings or optical surfaces. Washing with water may damage these surfaces, thereby affecting the tool's performance and measurement accuracy. During use, especially in complex environments, tiny contaminants (such as dust, oil, or water stains) may adhere to the tool surface. These contaminants may penetrate into small areas or react chemically with the surface, making them difficult to remove completely. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies.

[0006] To solve the above-mentioned technical problems, this utility model provides an arc length projection measuring tool, comprising: a measuring instrument, a cleaning structure on one side of the measuring instrument, the cleaning structure including a groove, the groove being formed on the measuring instrument, a sliding rod slidably connected to the inner wall of the groove, a connecting block fixedly connected to the side of the sliding rod away from the measuring instrument, a fixing plate fixedly connected to the upper surface of the connecting block, a connecting plate fixedly connected to the upper end of the fixing plate, several connecting frames slidably connected to both sides of the connecting plate, several insert rods slidably connected to the inner wall of the connecting frames, the insert rods being fixedly connected to the connecting frames, a cleaning pad fixedly connected to the side of the connecting frames near the connecting plate, a magnetic sheet fixedly connected to the bottom wall of the groove, an iron sheet fixedly connected to the end of the sliding rod near the magnetic sheet, the magnetic sheet and the iron sheet being compatible, and several scale grooves evenly distributed on the upper surface of the measuring instrument.

[0007] The aforementioned components achieve the following effects: When the measuring instrument needs cleaning, pulling the connecting plate moves the connecting plate, which in turn moves the fixing plate, which in turn moves the connecting block, which in turn moves the sliding rod, which in turn moves the iron sheet, separating the iron sheet from the magnetic sheet. The sliding rod then slides along the inner wall of the groove. The connecting plate then moves the insert rod and the connecting frame, which in turn moves the cleaning pad, cleaning the measuring instrument. When the cleaning pad needs replacement, pulling the insert rod separates it from the connecting frame and the connecting plate. Then, pulling the connecting frame separates it from the connecting plate, and then fitting the new connecting frame onto the connecting plate. Finally, inserting the insert rod into the connecting frame and the connecting plate for fixation.

[0008] Preferably, a connecting plate is fixedly connected to the upper surface of the insertion rod, and the cross-section of the connecting plate is rectangular.

[0009] The effect achieved by the above components is that when it is necessary to pull the plug rod, the connecting plate can be pulled directly, and the connecting plate will drive the plug rod to move. The connecting plate can avoid pulling the plug rod one by one.

[0010] Preferably, a limiting rod is fixedly connected to the inner wall of the groove, and the limiting rod is slidably connected to the slide rod.

[0011] The effect achieved by the above components is that the limiting rod can limit the sliding rod, preventing it from deviating when sliding on the inner wall of the groove, thus improving the stability of the sliding rod.

[0012] Preferably, the connecting plate has a plurality of slots at one end near the slide groove, and the plurality of slots are evenly distributed on the connecting plate.

[0013] The effect achieved by the above components is that the groove can increase the friction between the hand and the connecting plate, preventing slippage when the connecting plate is pulled.

[0014] Preferably, the connecting plate has a rectangular cross-section and is made of plastic.

[0015] The effect achieved by the above components is that the plastic material is relatively inexpensive, which can greatly reduce the manufacturing cost of the connecting plate.

[0016] Preferably, the slide bar has a circular cross-section and is made of stainless steel.

[0017] The effect achieved by the above components is that the stainless steel material can increase the service life of the slide bar, prevent the slide bar from rusting during use, and improve the service life of the slide bar.

[0018] Compared with related technologies, the arc length projection measuring tool provided by this utility model has the following beneficial effects:

[0019] This invention provides an arc length projection measuring tool. By setting up a cleaning structure, it addresses the challenges of existing arc length projection measuring tools with complex surface designs, often containing multiple grooves, small holes, or precision components. These make it difficult to ensure thorough cleaning of every detail, easily overlooking hard-to-reach areas. The surface of the measuring tool may use special coatings or fine surface treatments, such as anti-reflective coatings or optical surfaces. Water washing may damage these surfaces, affecting the tool's performance and measurement accuracy. During use, especially in complex environments, tiny contaminants (such as dust, oil, or water stains) may adhere to the tool surface. These contaminants may penetrate into small areas or react chemically with the surface, making them difficult to remove completely. This device achieves the effect of conveniently cleaning the surface of the measuring instrument, not only preventing surface corrosion but also facilitating quick replacement of the cleaning pad. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of an arc length projection measuring tool provided by this utility model;

[0021] Figure 2 for Figure 1 The diagram shows the cleaning structure.

[0022] Figure 3 for Figure 2 The enlarged view of point A shown;

[0023] Figure 4 for Figure 2 The enlarged view of point B shown.

[0024] Labels in the diagram: 1. Measuring instrument; 2. Cleaning structure; 201. Scale groove; 202. Slide groove; 203. Connecting plate; 204. Cleaning pad; 205. Connecting plate; 206. Insert rod; 207. Connecting frame; 208. Magnetic sheet; 209. Iron sheet; 210. Limiting rod; 211. Slide rod; 212. Connecting block; 213. Fixing plate; 214. Groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] Please see Figures 1 to 4 The present invention provides an arc length projection measuring tool, comprising: a measuring instrument 1, wherein a cleaning structure 2 is provided on one side of the measuring instrument 1.

[0028] In the embodiments of this utility model, please refer to Figure 1 and Figure 4The cleaning structure 2 includes a chute 202, which is formed on the measuring instrument 1. A slide rod 211 is slidably connected to the inner wall of the chute 202. A connecting block 212 is fixedly connected to the side of the slide rod 211 away from the measuring instrument 1. A fixing plate 213 is fixedly connected to the upper surface of the connecting block 212. A connecting plate 203 is fixedly connected to the upper end of the fixing plate 213. Several connecting frames 207 are slidably connected to both sides of the connecting plate 203. Several connecting frames 207 are slidably connected to the inner wall of the connecting frames 207. A plug rod 206 is fixedly connected to a connecting frame 207. A cleaning pad 204 is fixedly connected to the side of the connecting frame 207 near the connecting plate 203. A magnetic sheet 208 is fixedly connected to the bottom wall of the slide groove 202. An iron sheet 209 is fixedly connected to the end of the slide rod 211 near the magnetic sheet 208. The magnetic sheet 208 and the iron sheet 209 are compatible. Several scale grooves 201 are opened on the upper surface of the measuring instrument 1. Several scale grooves 201 are evenly distributed on the measuring instrument 1. When cleaning of measuring instrument 1 is required, the connecting plate 203 is pulled to move, which in turn moves the fixing plate 213, which in turn moves the connecting block 212, which in turn moves the sliding rod 211, which in turn moves the iron sheet 209, separating it from the magnetic sheet 208. The sliding rod 211 then slides along the inner wall of the slide groove 202. The connecting plate 203 then moves the insertion rod 206 and the connecting frame 207, which in turn moves the cleaning pad 20. 4. The cleaning pad 204 cleans the measuring instrument 1. When the cleaning pad 204 needs to be replaced, pull the insertion rod 206 to separate it from the connecting frame 207 and the connecting plate 203. Then, pull the connecting frame 207 to separate it from the connecting plate 203. Next, fit the new connecting frame 207 onto the connecting plate 203. Then, insert the insertion rod 206 into the connecting frame 207 and the connecting plate 203 for fixation. A connecting plate 205 is fixedly connected to the upper surface of the insertion rod 206. The connecting plate 205 has a rectangular cross-section. When the insertion rod 206 needs to be pulled, the connecting plate 205 can be pulled directly, causing the insertion rod 206 to move. The connecting plate 205 avoids pulling the insertion rods 206 one by one. A limit rod 210 is fixedly connected to the inner wall of the slide groove 202, and the limit rod 210 is slidably connected to the slide rod 211. The limiting rod 210 can limit the sliding rod 211, preventing it from deviating when sliding on the inner wall of the slide groove 202, thus improving the stability of the sliding rod 211. The connecting plate 203 has several slots 214 evenly distributed on one end near the slide groove 202. The slots 214 increase the friction between the hand and the connecting plate 203, preventing slippage when pulling the connecting plate 203. The connecting plate 203 has a rectangular cross-section and is made of plastic. Plastic is a relatively inexpensive material, which can greatly reduce the manufacturing cost of the connecting plate 203. The sliding rod 211 has a circular cross-section and is made of stainless steel.The stainless steel material can increase the service life of the slide bar 211, prevent the slide bar 211 from rusting during use, and improve the service life of the slide bar 211.

[0029] The working principle of the arc length projection measuring tool provided by this utility model is as follows: When the measuring instrument 1 needs to be cleaned, the connecting plate 203 is pulled to move, the connecting plate 203 drives the fixing plate 213 to move, the fixing plate 213 drives the connecting block 212 to move, the connecting block 212 drives the sliding rod 211 to move, the sliding rod 211 drives the iron piece 209 to move, the iron piece 209 separates from the magnetic piece 208, and then the sliding rod 211 slides on the inner wall of the sliding groove 202. Then the connecting plate 203 drives the insertion rod 206 and the connecting frame 207 to move, the connecting frame 207 drives the cleaning pad 204 to move, and the cleaning pad 204 cleans the measuring instrument 1. When the cleaning pad 204 needs to be replaced, the insertion rod 206 is pulled to separate the insertion rod 206 from the connecting frame 207 and the connecting plate 203, and then the connecting frame 207 is pulled to separate from the connecting plate 203. Then, the new connecting frame 207 is fitted onto the connecting plate 203, and the insert rod 206 is inserted into the connecting frame 207 and the connecting plate 203 for fixation. When the insert rod 206 needs to be pulled, the connecting plate 205 can be pulled directly, and the connecting plate 205 drives the insert rod 206 to move. The connecting plate 205 can avoid pulling the insert rod 206 one by one. The limiting rod 210 can limit the sliding rod 211, preventing the sliding rod 211 from deviating when sliding on the inner wall of the sliding groove 202, thus improving the sliding stability of the sliding rod 211. The groove 214 can increase the friction between the hand and the connecting plate 203, preventing slippage when pulling the connecting plate 203. The plastic material is relatively inexpensive, which can greatly reduce the manufacturing cost of the connecting plate 203. The stainless steel material can increase the service life of the sliding rod 211, prevent the sliding rod 211 from rusting during use, and improve the service life of the sliding rod 211.

[0030] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An arc length projection measurement tool characterized by, Include: Measuring instrument (1), one side of the measuring instrument (1) is provided with cleaning structure (2), the cleaning structure (2) includes chute (202), the chute (202) is opened on the measuring instrument (1), the inner wall of the chute (202) is slidably connected with slide rod (211), the side of the slide rod (211) away from the measuring instrument (1) is fixedly connected with the link block (212), the upper surface of the link block (212) is fixedly connected with the fixed plate (213), the upper end of the fixed plate (213) is fixedly connected with the connecting plate (203), the both sides of the connecting plate (203) are slidably connected with a plurality of connecting frames (207), the inner wall of the connecting frame (207) is slidably connected with a plurality of insertion rods (206), the insertion rod (206) is fixedly connected with the connecting frame (207), the side of the connecting frame (207) close to the connecting plate (203) is fixedly connected with the cleaning pad (204), the bottom wall of the chute (202) is fixedly connected with the magnetic sheet (208), the end of the slide rod (211) close to the magnetic sheet (208) is fixedly connected with the iron sheet (209), the magnetic sheet (208) is matched with the iron sheet (209), the upper surface of the measuring instrument (1) is provided with a plurality of scale grooves (201), a plurality of scale grooves (201) are evenly distributed on the measuring instrument (1).

2. An arc length projection measurement tool according to claim 1, wherein, The upper surface of the insertion rod (206) is fixedly connected with the link plate (205), and the section of the link plate (205) is rectangular.

3. An arc length projection measurement tool according to claim 1, wherein, The inner wall of the chute (202) is fixedly connected with the limiting rod (210), and the limiting rod (210) is slidably connected with the slide rod (211).

4. An arc length projection measurement tool according to claim 1, wherein, The end of the connecting plate (203) close to the chute (202) is provided with a plurality of notches (214), and a plurality of notches (214) are evenly distributed on the connecting plate (203).

5. An arc length projection measurement tool according to claim 1, wherein, The section of the connecting plate (203) is rectangular, and the connecting plate (203) is a plastic plate.

6. An arc length projection measurement tool according to claim 1, wherein, The section of the slide rod (211) is circular, and the slide rod (211) is a stainless steel rod.

Images