A digital display shield cutter wear measuring ruler and its use method

Abstract

The present invention discloses a digital-display shield cutter wear measuring ruler and a method for using the ruler. The ruler comprises a connected caliper and a stylus-type digital-display ruler. The lower portion of the caliper is provided with a cutter ring-shaped groove for engaging with the cutter ring of the cutter ring. The stylus-type digital-display ruler comprises an illumination structure, a display structure, and a measurement structure. The measurement structure comprises a ruler and a stylus that are connected and movable up and down. The ruler is provided with a scale, and the lower end of the stylus is arranged corresponding to the cutter ring-shaped groove. The ruler is equipped with an illumination lamp and a liquid crystal display screen, enabling measurement even in low-light environments. The ruler has an accuracy of 0.01 mm, ensuring accurate and high-precision measurements. The digital-display measurement method makes measurement results easy to read and store.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel engineering, in particular to a digital display shield cutter wear measuring ruler and a use method thereof. Background Art

[0002] Shield machines and TBMs are widely used in urban rail transit and highway construction due to their high degree of mechanization, rapid construction speed, strong ground adaptability, and high safety and reliability. Shield and TBM cutterheads are equipped with tools such as rollers, cutters, and scrapers, which work together to cut and break the ground, enabling tunnel excavation and advancement. When a tool is damaged or wear exceeds a specified limit, the cutter head should be promptly opened and replaced with a new one. Failure to do so can result in insufficient excavation dimensions, difficulty adjusting the tool position, and, in severe cases, the shield machine or TBM may become stuck in the tunnel. Shield cutters are particularly prone to frequent replacement in hard rock formations, and inaccurate measurement of cutter wear can lead to significant time and financial losses.

[0003] Shield cutter wear is typically measured using a specialized caliper provided by the cutter manufacturer. This caliper is clamped to the cutter's edge. The gap between the caliper and the cutter represents the wear, and the wear is then estimated manually. However, this measurement method is significantly affected by environmental and human factors. Inadequate lighting in the chamber makes measurement difficult, and readings are also affected by line of sight and personal subjective factors, leading to inaccurate readings. Inaccurate wear measurements can lead to incorrect cutter replacement decisions, which can result in significant economic losses. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a digital display shield cutter wear measuring ruler and a method of use to achieve the purpose of accurate measurement and easy-to-read measurement results.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A digital shield cutter wear measuring ruler comprises a connected caliper and a stylus digital ruler. The lower portion of the caliper is provided with a cutter ring-shaped groove for clamping on the cutter ring of the hob. The stylus digital ruler comprises an illumination structure, a display structure, and a measuring structure. The measuring structure comprises a ruler and a stylus connected so as to be movable up and down. The ruler is provided with a scale, and the lower end of the stylus is arranged corresponding to the cutter ring-shaped groove.

[0007] The caliper is a transparent groove plate or a stainless steel plate.

[0008] The caliper is provided with caliper scale lines at the edge of the knife ring-shaped groove.

[0009] The corner of the caliper is provided with a circular hole for tying a rope.

[0010] The lighting structure comprises a lighting lamp and a lighting switch, and the lighting lamp is arranged corresponding to the knife ring-shaped groove.

[0011] The screen display structure includes a display screen and a screen display switch, and the display screen is set corresponding to the ruler.

[0012] The measurement structure further includes a unit conversion key, a zero return key, and a storage key, which are arranged side by side.

[0013] The caliper is detachably arranged at the lower part of the stylus-type digital ruler.

[0014] The measuring needle and the ruler are an integrated structure.

[0015] A method for using the digital shield cutter wear measuring ruler comprises the following steps:

[0016] 1) When measuring in a dark or low-light environment, turn on the lighting switch and the screen display switch, push the ruler until the stylus is flush with the upper edge of the caliper groove, and then press the zero button to reset the screen value to zero;

[0017] 2) Place the caliper groove on the cutter ring of the hob to be measured, keeping the caliper aligned with the radial direction of the hob. Push the ruler until the stylus contacts the edge of the cutter ring. The value displayed on the screen is the wear of the hob at that position. Press the store button to record the value.

[0018] 3) Measure the wear data of several positions of each hob in a cross-shaped pattern. If the wear deviation of each position is not large, the average value will be used as the average wear of the hob. If serious uneven wear occurs, the maximum wear value will be used as the maximum wear of the hob.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The digital shield cutter wear measuring ruler and its usage method are reasonably designed. The ruler is equipped with a lighting lamp and a liquid crystal display, so measurements can be completed even in low-light environments. The ruler has an accuracy of 0.01mm, and the measurement is accurate and precise. The digital measurement method makes the measurement results easy to read and store. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following is a brief description of the contents and symbols in the drawings of this specification:

[0022] Figure 1 It is a schematic structural diagram of the measuring ruler of the present invention.

[0023] In the picture:

[0024] 1 caliper, 11 knife ring groove, 12 caliper scale line, 13 round hole, 2 stylus type digital display ruler, 21 lighting structure, 211 lighting lamp, 212 lighting switch, 22 screen display structure, 221 display screen, 222 screen display switch, 23 measuring structure, 231 stylus, 232 ruler, 233 unit conversion key, 234 zero key, 235 storage key. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention will be further explained in detail below through description of embodiments with reference to the accompanying drawings.

[0026] like Figure 1 As shown, the digital shield cutter wear measuring ruler includes a connected caliper 1 and a stylus digital ruler 2. The lower part of the caliper is provided with a cutter ring-shaped groove 11 for clamping on the cutter ring of the hob. The stylus digital ruler includes an illumination structure 21, a screen display structure 22 and a measuring structure 23. The measuring structure includes a ruler 232 and a stylus 231 that are connected and can be movably connected up and down. The ruler is provided with a scale, and the lower end of the stylus is set corresponding to the cutter ring-shaped groove.

[0027] The caliper is a transparent grooved plate or stainless steel plate with a cutter ring-shaped groove that matches the cross-sectional shape and size of the hob cutter ring to be measured, making measurement accurate and easy. The corners of the caliper are provided with a round hole 13 for tying a rope, making it easy to carry and prevent falling.

[0028] The caliper is provided with caliper scale lines 12 at the edge of the knife ring-shaped groove, and the caliper scale lines are used for checking the reading of the digital display.

[0029] Preferably, the stylus-type digital ruler is a hollow square block, the ruler and the stylus can move up and down in the block, and the lower part of the square block is connected to the caliper; the lighting structure includes a lighting lamp 211 and a lighting switch 212, and the lighting lamp is arranged corresponding to the knife ring-shaped groove; the screen display structure includes a display screen 221 and a display switch 222, and the display screen corresponds to the ruler on the side of the block; the measurement structure also includes a unit conversion key 233, a zero key 234 and a storage key 235, and the unit conversion key, zero key and storage key are arranged side by side, and each key and switch key are respectively arranged on the edge of the block.

[0030] The caliper is detachably mounted on the lower part of the stylus-type digital ruler. The caliper is a replaceable structure, and the corresponding caliper can be replaced according to the different forms and specifications of the hobs, so that the caliper groove fits the cross section of the hob ring, making measurement accurate and easy.

[0031] The stylus and ruler are integrated and extend and retract together. The ruler is engraved with graduations for verifying displayed results. The measuring range is 6cm, with a minimum graduation of 1mm. Measurement units are available in mm and in, and can be switched using the unit switch. The LCD display can display measurement results even in dark environments.

[0032] The method for using the digital display shield cutter wear measuring ruler of the present invention comprises the following steps:

[0033] 1) When measuring in a dark or low-light environment, turn on the lighting switch and the screen display switch, push the ruler until the stylus is flush with the upper edge of the caliper groove, and then press the zero button to reset the screen value to zero;

[0034] 2) Place the caliper groove on the cutter ring of the hob to be measured, keeping the caliper aligned with the radial direction of the hob. Push the ruler until the stylus contacts the edge of the cutter ring. The value displayed on the screen is the wear of the hob at that position. Press the store button to record the value.

[0035] 3) Measure the wear data of several positions of each hob in a cross-shaped pattern. If the wear deviation of each position is not large, the average value will be used as the average wear of the hob. If serious uneven wear occurs, the maximum wear value will be used as the maximum wear of the hob.

[0036] The measuring ruler of the present invention is equipped with an illuminating lamp and a liquid crystal display screen, and can complete measurement even in an environment with insufficient lighting; the measuring ruler has an accuracy of 0.01mm, and the measurement is accurate and high in precision; the digital display measurement method makes the measurement results easy to read and store.

[0037] When measuring the hob wear, clamp the caliper's cutter ring groove to the cutter ring position of the hob to be measured, keep the caliper and the hob in the same radial direction, and push the ruler until the probe contacts the edge of the cutter ring. The value displayed on the screen is the wear of the hob at that position. The operation is simple.

[0038] Compared with traditional measurement, the present invention has the following advantages: (1) The measuring ruler is equipped with an illumination lamp and a liquid crystal display screen, and can complete measurement in an environment with insufficient lighting; (2) The accuracy of the traditional measuring ruler is only 0.25mm, while the accuracy of the measuring ruler of the present invention is 0.01mm, and the measurement accuracy is high; the measurement units are mm and in, which can be switched arbitrarily according to needs; (3) The digital display measurement method avoids inaccurate readings caused by sight and personal subjective factors, and realizes the transition from mechanical to electronic measurement; (4) The corresponding caliper can be replaced according to different forms and specifications of the hob, and has good adaptability; (5) It has a novel structure, is easy to operate, and is cheap, suitable for use and promotion.

[0039] The above is only an illustration of a preferred embodiment of the present invention. The above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0040] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A method for using a digital display shield cutter wear measuring ruler, characterized by: The digital display shield cutter wear measuring ruler: The device comprises a connected caliper and a stylus-type digital ruler, wherein the lower portion of the caliper is provided with a cutter ring-shaped groove for clamping on the cutter ring of the hob, and the stylus-type digital ruler comprises an illumination structure, a display structure, and a measuring structure, wherein the measuring structure comprises a ruler and a stylus that are movably connected and connected up and down, the ruler being provided with a scale, and the lower end of the stylus being provided corresponding to the cutter ring-shaped groove; the caliper is provided with caliper scale lines at the edge of the cutter ring-shaped groove; the illumination structure comprises an illumination lamp and an illumination switch, and the illumination lamp is provided corresponding to the cutter ring-shaped groove; the caliper is detachably provided at the lower portion of the stylus-type digital ruler; the stylus and ruler are an integrated structure; The method of use comprises the following steps: 1) When measuring in a dark or low-light environment, turn on the lighting switch and the screen display switch, push the ruler until the stylus is flush with the upper edge of the caliper groove, and then press the zero button to reset the screen value to zero; 2) Place the caliper groove on the cutter ring of the hob to be measured, keeping the caliper aligned with the radial direction of the hob. Push the ruler until the stylus contacts the edge of the cutter ring. The value displayed on the screen is the wear of the hob at that position. Press the store button to record the value. 3) Measure the wear data of several positions of each hob in a cross-shaped pattern. If the wear deviation of each position is not large, the average value will be used as the average wear of the hob. If serious uneven wear occurs, the maximum wear value will be used as the maximum wear of the hob.

2. The method of use according to claim 1, wherein: The caliper is a transparent groove plate or a stainless steel plate.

3. The method of use according to claim 1, wherein: The corner of the caliper is provided with a circular hole for tying a rope.

4. The method of use according to claim 1, wherein: The screen display structure includes a display screen and a screen display switch, and the display screen is set corresponding to the ruler.

5. The method of use according to claim 1, wherein: The measurement structure further includes a unit conversion key, a zero return key, and a storage key, which are arranged side by side.

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