A visual recognition device for wear degree of a hob

Abstract

The utility model relates to the technical field of shield machine hob, specifically is a kind of hob wear degree visual identification device, including fixed base and the rotating shaft of fixed base upper end rotation installation, the upper end of rotating shaft is rotatably connected with installation platform, and installation platform upper end is fixedly connected with installation cleaning mechanism, and rotating shaft outside is rotatably connected with three-dimensional scanner;The utility model places hob on installation cleaning mechanism, and hob gravity extrusion elastic clamping piece makes it fixed installation in fixed rotating component inside, then drives rotating shaft rotation by drive source, and then drives three-dimensional scanner rotation by stabilizing support to carry out multi-angle three-dimensional visual scanning to hob, simultaneously, rotating installation piece is driven to rotate by transmission component, and then hob is driven to rotate and position is adjusted, along with the rotation of hob, it is cleaned by cleaning component, avoid the detection accuracy reduction caused by its residual pollutant.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine cutterhead technology, specifically a visual recognition device for cutterhead wear degree. Background Technology

[0002] With the deepening development of urban underground space, shield tunneling has been widely used in infrastructure projects such as subways and river crossings. As a key component that directly acts on the rock mass, the cutter head of the shield machine directly determines the tunneling efficiency, cutter replacement cycle, and project safety. During shield construction, the cutter head frequently comes into strong contact with the rock and is subjected to severe impact and wear, making it prone to complex deformations such as edge dulling, localized indentation of the cutter ring, and asymmetric shearing. Therefore, accurate identification and geometric modeling of the cutter head wear is a key technology to ensure efficient and low-consumption advancement of the project.

[0003] Currently, the industry mainly uses manual methods such as visual inspection and caliper measurement to assess the wear of hobs. This lacks a unified standard and suffers from problems such as strong subjectivity, poor repeatability, and low efficiency. Furthermore, it is difficult to obtain the three-dimensional geometric details of the hob. Before visual inspection, the hob surface needs to be cleaned to prevent surface impurities from affecting the inspection results. In addition, the existing fixing devices do not hold the hob well and it is difficult to determine the position of the hob to ensure that the whole structure is inspected completely, which leads to poor inspection results and inaccurate inspection results.

[0004] Therefore, this utility model provides a visual recognition device for the degree of wear of a hob that is easy to detect and allows for timely adjustment of the hob position. Summary of the Invention

[0005] To address the problems of inaccurate detection results and low detection efficiency in existing technologies, a visual recognition device for the degree of wear of hobbing tools has been designed.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a visual recognition device for the wear degree of a hobbing cutter, including a fixed base and a rotating shaft rotatably mounted on the upper end of the fixed base. The upper end of the rotating shaft is rotatably connected to an installation platform. The upper end of the installation platform is fixedly connected to an installation and cleaning mechanism. A three-dimensional scanner is rotatably connected to the outside of the rotating shaft.

[0007] The 3D scanner performs multi-angle detection of the roller cutter by placing the roller cutter inside the installation and cleaning mechanism, and then driving the rotating shaft to rotate through the drive source, thereby driving the 3D scanner to rotate. At the same time, as the 3D scanner rotates, the installation and cleaning mechanism drives the roller cutter to rotate and clean it.

[0008] Furthermore, the installation and cleaning mechanism includes a fixed base fixedly connected to the installation platform, an installation component fixedly connected to one side of the fixed base, a uniformly distributed cleaning brush inside the installation component, and a fixed rotating assembly rotatably installed inside the fixed base.

[0009] Furthermore, the fixed rotation assembly includes a rotating component rotatably installed inside the fixed base, the bottom end of which is fixedly connected to the installation platform, and the upper end of the rotating component is provided with multiple sets of elastic clamping components.

[0010] Furthermore, the mounting platform and the fixed base are fixedly connected by a support plate.

[0011] Furthermore, a transmission assembly is connected to the outer side of the rotating shaft, which is connected to the rotating component through the transmission assembly.

[0012] Furthermore, a stabilizing bracket is rotatably mounted on the outer side of the rotating shaft, which is rotatably connected to the 3D scanner through the stabilizing bracket.

[0013] The beneficial effects of this utility model are:

[0014] This utility model discloses a visual recognition device for the wear degree of a hobbing cutter. The hobbing cutter is placed above a cleaning and mounting mechanism. The gravity of the hobbing cutter compresses an elastic clamping element, fixing it inside a fixed rotating assembly. A drive source drives a rotating shaft, which in turn drives a 3D scanner via a stabilizing bracket to perform multi-angle 3D visual scanning of the hobbing cutter. Simultaneously, a transmission assembly drives a rotating mounting component, which in turn rotates the hobbing cutter for position adjustment. As the hobbing cutter rotates, it passes through a cleaning assembly for cleaning, preventing residual contaminants from reducing detection accuracy. The 3D scanner provides a non-contact, rapid, and highly repeatable wear recognition method, reducing manual intervention and further improving the detection accuracy of the hobbing cutter's wear degree. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the fixed platform of this utility model;

[0018] Figure 3 For the present utility model Figure 2 Enlarged view of a portion at point A;

[0019] Figure 4 This is a schematic diagram of the hobbing cutter structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the fixed-rotation assembly structure of this utility model;

[0021] Figure 6 For the present utility model Figure 5 A schematic diagram of the structure at point B.

[0022] In the diagram: 1. Fixed base; 11. Rotating shaft; 2. Mounting platform; 3. Cleaning mechanism installation; 31. Fixed base; 32. Mounting component; 33. Cleaning brush; 34. Fixed rotating assembly; 341. Rotating component; 342. Elastic clamping component; 4. Stabilizing bracket; 5. 3D scanner; 7. Hob; 8. Transmission assembly. Detailed Implementation

[0023] To make the technical means, technical features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Example: Figure 1 - Figure 6 As shown, the present invention provides a visual recognition device for the wear degree of a hobbing cutter, which includes a fixed base 1 and a rotating shaft 11 rotatably mounted on the upper end of the fixed base 1. The upper end of the rotating shaft 11 is rotatably connected to a mounting platform 2, and the upper end of the mounting platform 2 is fixedly connected to a cleaning mechanism 3. A three-dimensional scanner 5 is rotatably connected to the outside of the rotating shaft 11.

[0025] The 3D scanner 5 performs multi-angle detection by placing the roller cutter 7 inside the mounting and cleaning mechanism 3, and then driving the rotating shaft 11 to rotate through the drive source, thereby driving the 3D scanner 5 to rotate. At the same time, as the 3D scanner 5 rotates, the mounting and cleaning mechanism 3 drives the roller cutter 7 to rotate and clean the roller cutter 7.

[0026] Specifically, by placing the hob 7 above the mounting and cleaning mechanism 3, the gravity of the hob 7 compresses the elastic clamping member 342, fixing it inside the fixed rotating assembly 34. Then, the drive source drives the rotating shaft 11 to rotate, which in turn drives the 3D scanner 5 to rotate and perform multi-angle 3D visual scanning of the hob 7 through the stabilizing bracket 4. At the same time, the transmission assembly 8 drives the rotating member 341 to rotate, which in turn drives the hob 7 to rotate for position adjustment. As the hob 7 rotates, the cleaning brush 33 cleans the surface of its cutting teeth to prevent residual contaminants from reducing detection accuracy. At the same time, the 3D scanner 5 realizes automatic stitching of multi-angle point cloud data, triangular mesh reconstruction and surface smoothing, and automatically calculates the core parameters of cutting ring volume loss, average radius change, cutting edge deviation and RMS error. The 3D scanner 5 is a scientific instrument that acquires the geometric shape, color and texture data of the object surface in a non-contact manner. The generated point cloud data can be used for 3D reconstruction, reverse engineering or quality inspection.

[0027] In this embodiment, the cleaning mechanism 3 includes a fixed base 31 fixedly connected to the installation platform 2. An installation component 32 is fixedly connected to one side of the fixed base 31. The installation component 32 is provided with uniformly distributed cleaning brushes 33 inside. A fixed rotating assembly 34 is rotatably installed inside the fixed base 31.

[0028] Specifically, such as Figure 2 As shown, the fixed base 31 is used to fix and install the various internal structures of the cleaning mechanism 3. At the same time, it can rotate inside the fixed rotating assembly 34 when it drives the roller 7 to rotate. The mounting part 32 is located on one side of the upper end of the fixed base 31. It is in the shape of an inverted C and has evenly distributed cleaning brushes 33 installed inside. The cleaning brushes 33 are used to clean the teeth of the roller 7 when it passes by, so as to avoid the residual contaminants on the surface of the teeth from affecting the detection accuracy of the 3D scanner 5. The fixed rotating assembly 34 is used to install the roller 7 and fix and clamp the roller 7. At the same time, it drives the roller to rotate to adjust its position and avoid detection dead angles. The cleaning mechanism 3 can also adopt any other structure that can achieve the same effect.

[0029] In this embodiment, the fixed rotation assembly 34 includes a rotating component 341 rotatably installed inside the fixed base 31, the bottom end of which is fixedly connected to the mounting platform 2, and the upper end of the rotating component 341 is provided with multiple sets of elastic clamping components 342.

[0030] Specifically, such as Figure 5 and Figure 6 As shown, the rotating component 341 is rotatably installed inside the fixed base 31, and its bottom end is rotatably connected to the mounting platform 2. The elastic clamping component 342 includes a clamping block and a spring disposed between the clamping block and the rotating component 341. The clamping block is slidably installed at the end of the rotating component 341 away from the mounting platform 2. When the roller cutter 7 is placed inside the mounting cleaning mechanism 3, it will squeeze the clamping block. Then, the clamping block compresses the spring to make it fall into the multiple sets of elastic clamping components 342 and clamp it. One side of the clamping block is provided with concave and convex parts to increase the friction between it and the roller cutter 7. At the same time, the fixed rotating component 34 can also be set to other structures that can achieve the same effect.

[0031] In this embodiment, the mounting platform 2 and the fixed base 1 are fixedly connected by a support plate. A transmission component 8 is connected to the outside of the rotating shaft 11, which is connected to the rotating component 341 through the transmission component 8. A stabilizing bracket 4 is rotatably mounted on the outside of the rotating shaft 11, which is rotatably connected to the 3D scanner 5 through the stabilizing bracket 4.

[0032] Specifically, such as Figure 2 , Figure 3 and Figure 5As shown, the mounting platform 2 serves as a workbench to cooperate with the mounting cleaning mechanism 3 to install the roller cutter 7. The mounting platform 2 is fixedly connected to the fixed base 1 and supported by a support plate. The rotating shaft 11 is driven to rotate by a drive source, which can be a motor drive or any other device that can achieve the same effect. The transmission component 8 includes a large gear fixedly installed on the outer side of the upper end of the rotating shaft 11 and a small gear meshing with the large gear. The small gear passes through the mounting platform through the rotating shaft and drives the rotating component 341 to rotate through the transmission wheel and transmission belt. The transmission ratio between the large gear and the small gear is 2:1, that is, the rotating shaft 11 drives the 3D scanner 5 to rotate half a turn around itself, which will drive the roller cutter 7 to rotate one turn, avoiding the problem of uneven detection caused by synchronous rotation. The stabilizing bracket 4 drives the 3D scanner 5 to rotate stably and fix it. The transmission component 8 can also be any other structure that can achieve the same effect.

[0033] Working principle: First, the operator places the roller cutter 7 on the upper end of the installation cleaning mechanism 3. When the roller cutter 7 is inside the installation cleaning mechanism 3, it will squeeze the clamping block. Then, the clamping block compresses the spring and causes it to fall into the multiple sets of elastic clamping parts 342 and clamp it. One side of the clamping block is provided with concave and convex parts to increase the friction between it and the roller cutter 7.

[0034] Next, the drive source drives the rotating shaft 11 to rotate, which in turn drives the 3D scanner 5 to rotate via the stabilizing bracket 4 to perform multi-angle visual inspection of the hob 7. Simultaneously, as the rotating shaft 11 rotates, the large gear drives the small gear to rotate, which in turn drives the rotating component 341 to rotate via the transmission wheel and transmission belt. As the rotating component 341 rotates, the hob 7 rotates inside the fixed base 31. At the same time, as the hob 7 rotates, it passes through the cleaning brush 33 to clean residual contaminants and other impurities on its surface, avoiding affecting the visual inspection accuracy of the 3D scanner 5. Then, the 3D scanner 5 performs high-precision 3D modeling of the wear state of the hob 7, capturing complete spatial morphological features. It automatically completes the geometric comparison analysis between the original hob 7 and the worn hob 7. This non-contact, fast, and highly repeatable wear identification method improves the detection efficiency, and the output data results are used in numerical simulation platforms such as discrete element method to further improve the accuracy and efficiency of rock breaking performance analysis.

[0035] After visual inspection of the grinding degree of the hob 7 is completed, it is removed by the staff. At the same time, the elastic clamping part 342 loses pressure and returns to its original position, and then visual inspection of the subsequent hobs 7 can continue.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A visual recognition device for the degree of wear of a hobbing cutter, comprising a fixed base and a rotating shaft rotatably mounted on the upper end of the fixed base, wherein a mounting platform is rotatably connected to the upper end of the rotating shaft, characterized in that: The upper end of the installation platform is fixedly connected to an installation and cleaning mechanism, and a 3D scanner is rotatably connected to the outside of the rotating shaft. The 3D scanner performs multi-angle detection of the roller cutter by placing the roller cutter inside the installation and cleaning mechanism, and then driving the rotating shaft to rotate through the drive source, thereby driving the 3D scanner to rotate. At the same time, as the 3D scanner rotates, the installation and cleaning mechanism drives the roller cutter to rotate and clean it.

2. The visual recognition device for the degree of hob wear according to claim 1, characterized in that: The installation and cleaning mechanism includes a fixed base that is fixedly connected to the installation platform. An installation component is fixedly connected to one side of the fixed base. The installation component is equipped with evenly distributed cleaning brushes. A fixed rotating assembly is rotatably installed inside the fixed base.

3. The visual recognition device for the degree of hob wear according to claim 2, characterized in that: The fixed rotation assembly includes a rotating component rotatably installed inside the fixed base, with its bottom end fixedly connected to the installation platform, and multiple sets of elastic clamping components provided on the upper end of the rotating component.

4. The visual recognition device for the degree of hob wear according to claim 1, characterized in that: The installation platform and the fixed base are fixedly connected by a support plate.

5. The visual recognition device for the degree of hob wear according to claim 4, characterized in that: The outer side of the rotating shaft is connected to a transmission assembly, which is connected to the rotating component through the transmission assembly.

6. The visual recognition device for the degree of hob wear according to claim 3, characterized in that: A stabilizing bracket is rotatably mounted on the outside of the rotating shaft, and it is rotatably connected to the 3D scanner through the stabilizing bracket.

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