Miniature TBM testing device

Abstract

The utility model discloses a miniature TBM testing device, which comprises a propulsion system and a front-end rotating cutterhead mechanism, the front-end rotating cutterhead mechanism comprises a rotating cutterhead in transmission connection with the propulsion system, and the rotating cutterhead comprises a circular rotating disc and a circular mounting disc arranged on the circular rotating disc. An edge hobbing cutter assembly is arranged in the circumferential direction of the circular mounting disc, a first mounting frame and a second mounting frame are arranged on the circular mounting disc in the diameter direction, and a first hobbing cutter assembly is arranged on the first mounting frame and comprises a plurality of first hobbing cutter components which are sequentially arranged at intervals in the length direction of the first mounting frame; and a second hob assembly is arranged on the second mounting frame. According to the miniature TBM testing device provided by the utility model, the first hob component, the second hob component and the edge hob component are detachably mounted on the circular mounting disc, so that the mounting and the dismounting are convenient, and the first hob component, the second hob component and the edge hob component are matched with one another, so that the crushing effect of the miniature TBM on rocks is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel excavation, in particular to a micro TBM testing device. Background Art

[0002] Micro TBM (full-section hard rock tunnel boring machine) is a device used for tunnel excavation. It has the characteristics of small size, small turning radius and high degree of automation. It is mainly used for small-diameter and short-distance tunnel construction. It has demonstrated its high efficiency and flexibility in many fields such as coal mines and urban infrastructure construction. Micro TBM is also used in physical simulation tests and model test systems to study the tunnel excavation process and damage characteristics under complex geological conditions.

[0003] Micro TBMs usually include a front-end cutterhead rotation and propulsion system. Through the combined action of these systems, the tunnel face is crushed, and the crushed rock debris enters the slag discharge system through the scraper bucket and is then transported to the outside of the tunnel. In addition, micro TBMs also use design technologies such as composite shields, V-shaped propulsion systems, ultra-small curvature radius belt conveyors, and integrated belt conveyors to achieve miniaturization and modular design. The existing roller cutters on the front-end cutterhead are set irrationally, and the roller cutters are directly installed on the cutterhead. In actual use, due to changes in the excavation position and wear of the cutter, the roller cutters need to be replaced frequently, and the existing roller cutters on the cutterhead are not easy to disassemble. Utility Model Content

[0004] The utility model aims to provide a micro TBM testing device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A micro TBM testing device comprises a propulsion system and a front-end rotating cutter disc mechanism, wherein the front-end rotating cutter disc mechanism comprises a rotating cutter disc drivingly connected to the propulsion system, wherein the rotating cutter disc comprises a circular rotating disc and a circular mounting disc arranged on the circular rotating disc, wherein an edge roller cutter assembly is arranged in the circumference of the circular mounting disc, wherein a first mounting frame and a second mounting frame are arranged in the diameter direction of the circular mounting disc, wherein the first mounting frame is vertically arranged to the second mounting frame, wherein a first roller cutter assembly is arranged on the first mounting frame, wherein the first roller cutter assembly comprises a plurality of first roller cutter components arranged in sequence at intervals along the length direction of the first mounting frame, wherein a second roller cutter assembly is arranged on the second mounting frame, wherein the second roller cutter assembly comprises a plurality of second roller cutter components arranged in sequence at intervals along the length direction of the second mounting frame, and wherein the number of first roller cutters on the first roller cutter component and the number of second roller cutters on the second roller cutter component gradually decreases from the center of the circular mounting disc to the edge direction.

[0007] For the above-mentioned micro TBM test device, the first mounting frame and the second mounting frame form a central connecting part at the central position of the circular mounting disc, a first hob member is arranged at the central connecting part, and at least three of the first hobs are included in the first hob member located at the central connecting part.

[0008] For the above-mentioned micro TBM test device, the edge hob assembly includes a plurality of edge hobs, and the plurality of edge hobs are arranged at intervals in sequence along the circumference of the rotary cutter disc.

[0009] For the above-mentioned micro TBM test device, the first hob, the second hob and the edge hob all include a mounting frame and a hob arranged on the mounting frame, and mounting openings for mounting the mounting frame are arranged on the first mounting frame, the second mounting frame and the rotary cutter disc.

[0010] For the above-mentioned micro TBM test device, it further includes a radial mounting frame which is arranged along the radial direction of the rotary cutter disc, and an edge hob is arranged at one end of the radial mounting frame far from the center of the rotary cutter disc.

[0011] For the above-mentioned micro TBM test device, it further includes an overexcavation cutter member which is arranged along the circumferential arc wall of the rotary cutter disc.

[0012] For the above-mentioned micro TBM test device, the overexcavation cutter member includes an annular inner seat and an overexcavation cutter arranged on the annular inner seat. A first mounting shaft and a second mounting shaft are respectively formed on both sides of the overexcavation cutter, and the lengths of the first mounting shaft and the second mounting shaft are different.

[0013] For the above-mentioned micro TBM test device, it further includes a scraper assembly which is arranged on the outer side edge of the rotary cutter disc, and the scraper assemblies are arranged on both sides of the first mounting frame and the second mounting frame.

[0014] For the above-mentioned micro TBM test device, the scraper assemblies are arranged between the first mounting frame and the radial mounting frame and between the second mounting frame and the radial mounting frame.

[0015] In the above technical solution, the micro TBM test device provided by the present utility model includes a propulsion system and a front-end rotating cutter head mechanism. The front-end rotating cutter head mechanism includes a rotating cutter head that is drivingly connected to the propulsion system. The rotating cutter head includes a circular rotating disk and a circular mounting disk provided on the circular rotating disk. A peripheral hob assembly is provided on the circumferential direction of the circular mounting disk. The circular mounting disk is provided with a first mounting frame and a second mounting frame along the diameter direction. A first hob assembly is provided on the first mounting frame, and a second hob assembly is provided on the second mounting frame. The first hob assembly includes a plurality of first hob members arranged at intervals along the length direction of the first mounting frame. The second hob assembly includes a plurality of second hob members arranged at intervals along the length direction of the second mounting frame. In this way, the first hob member, the second hob member and the peripheral hob assembly can all be detachably mounted on the circular mounting disk, which is convenient for installation and disassembly. Moreover, the first hob assembly, the second hob assembly and the peripheral hob assembly cooperate with each other, so that the hob rock-breaking trajectory is in a stepped shape, improving the rock-breaking effect of the micro TBM. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Structural schematic diagram of the micro TBM test device provided by the embodiment of the present utility model;

[0018] Figure 2 Structural schematic diagram of the rotating cutter head provided by the embodiment of the present utility model;

[0019] Figure 3 Structural schematic diagram of the circular mounting disk provided by the embodiment of the present utility model;

[0020] Figure 4 Structural schematic diagram of the first hob member provided by the embodiment of the present utility model;

[0021] Figure 5 Structural schematic diagram of the over-excavation cutter member provided by the embodiment of the present utility model;

[0022] Figure 6 Structural schematic diagram of the scraper assembly provided by the embodiment of the present utility model.

[0023] Explanation of the reference numerals:

[0024] 1. Propulsion system; 2. Front end rotating cutter disc mechanism; 20. Rotating cutter disc; 21. Circular rotating disc; 22. Circular mounting disc; 23. First mounting frame; 24. Second mounting frame; 25. Central connecting part; 26. Mounting frame; 27. Hob; 28. Mounting opening; 29. ​​Circumferential mounting frame; 3. Edge hob assembly; 31. Edge hob; 4. First hob assembly; 41. First hob component; 42. First hob; 5. Second hob assembly; 51. Second hob component; 52. Second hob; 6. Radial mounting frame; 7. Super digging cutter component; 71. Annular inner seat; 72. Super digging cutter; 8. Scraper assembly. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] like Figures 1-5 As shown, the utility model provides a micro TBM testing device, including a propulsion system 1 and a front rotating cutter disc mechanism 2, the front rotating cutter disc mechanism 2 includes a rotating cutter disc 20 drivingly connected to the propulsion system 1, the rotating cutter disc 20 includes a circular rotating disc 21 and a circular mounting disc 22 arranged on the circular rotating disc 21, an edge roller cutter assembly 3 is arranged circumferentially of the circular mounting disc 22, a first mounting frame 23 and a second mounting frame 24 are arranged along a diameter direction of the circular mounting disc 22, the first mounting frame 23 and the second mounting frame 24 are arranged perpendicularly, a first roller cutter assembly 4 is arranged on the first mounting frame 23, the first roller cutter assembly 4 includes a plurality of first roller cutter components 41 arranged in sequence along the length direction of the first mounting frame 23, a second roller cutter assembly 5 is arranged on the second mounting frame 24, the second roller cutter assembly 5 includes a plurality of second roller cutter components 51 arranged in sequence along the length direction of the second mounting frame 24, and from the center of the rotating cutter disc 20 to the edge, the number of first roller cutters 42 on the first roller cutter component 41 and the number of second roller cutters 52 on the second roller cutter component 51 gradually decreases in sequence.

[0027] Specifically, the rotary cutter head 20 includes a circular rotary disk 21 and a circular mounting disk 22 disposed on the circular rotary disk 21. The circumferential side of the circular mounting disk 22 forms an arc surface. The circular mounting disk 22 is provided with a plurality of openings so that the circular mounting disk 22 forms a mounting structure for the first hob assembly 4, the second hob assembly 5, and the edge hob assembly 3. For the convenience of description, these mounting structures are respectively referred to as the first mounting frame 23, the second mounting frame 24, and the circumferential mounting frame 29. The first mounting frame 23, the second mounting frame 24, and the circumferential mounting frame 29 are fixed together. Optionally, the first mounting frame 23, the second mounting frame 24, and the circumferential mounting frame 29 are integrally provided. The first mounting frame 23 is used for the installation of the first hob assembly 4, the second mounting frame 24 is used for the installation of the second hob assembly 5, and the circumferential mounting frame 29 is used for the installation of the edge hob assembly 3. The first mounting frame 23 and the second mounting frame 24 are arranged along the diameter direction of the circular rotary disk 21, and the lengths of the first mounting frame 23 and the second mounting frame 24 are less than the diameter of the circular rotary disk 21. The first mounting frame 23 and the second mounting frame 24 can be only one, or there can be two or more. The first mounting frame 23 and the second mounting frame 24 are perpendicularly arranged. The circumferential mounting frame 29 is arranged along the circumference of the circular rotary disk 21 and is connected to both the first mounting frame 23 and the second mounting frame 24.

[0028] In this embodiment, the edge cutter assembly 3 includes a plurality of edge cutters 31, and a plurality of edge openings are provided on the circumferential mounting frame 29. The plurality of edge openings are arranged in sequence at intervals along the circumference of the circumferential mounting frame 29, and the edge cutters 31 are installed on the edge openings one by one. The arrangement of the edge cutters 31 can make the rock breaking trajectory of the edge cutters 31 into a stepped shape. The first edge cutter 31 that contacts the rock first will provide a free surface for rock breaking for the next edge cutter 31 that contacts the rock later, and so on. The first cutter assembly 4 includes a plurality of first cutter components 41, and the plurality of first cutter components 41 are arranged in sequence along the length direction of the first mounting frame 23, and from the center of the rotating cutter disc 20 to the edge direction, the number of first cutters 42 on the first cutter component 41 gradually decreases in sequence. For example, the first cutter 42 located in the middle position of the first mounting frame 23 The component 41 includes 6 first roller cutters 42 arranged in parallel. The first roller cutter components 41 from the first mounting frame 23 to both sides respectively include 2 and 1 first roller cutters 42 in sequence. Similarly, the second roller cutter assembly 5 includes multiple second roller cutter components 51. The multiple second roller cutter components 51 are arranged in sequence along the length direction of the second mounting frame 24, and the number of second roller cutters 52 on the second roller cutter components 51 gradually decreases from the center to the edge of the rotating cutter disc 20. For example, the second roller cutter components 51 of the second mounting frame 24 located on both sides of the first mounting frame 23 include 2 second roller cutters 52 arranged in parallel, and the second roller cutter components 51 at the remaining positions of the second mounting frame 24 only include one second roller cutter 52. In this way, the first roller cutter assembly 4, the second roller cutter assembly 5 and the edge roller cutter assembly 3 cooperate with each other to crush the tunnel face.

[0029] The micro TBM testing device provided by the utility model comprises a propulsion system 1 and a front rotating cutter disc mechanism 2, wherein the front rotating cutter disc 20 mechanism 2 comprises a rotating cutter disc 20 which is transmission-connected to the propulsion system 1, wherein the rotating cutter disc 20 comprises a circular rotating disc 21 and a circular mounting disc 22 arranged on the circular rotating disc 21, wherein an edge hob assembly 3 is arranged in the circumferential direction of the circular mounting disc 22, wherein a first mounting frame 23 and a second mounting frame 24 are arranged in the diameter direction of the circular mounting disc 22, wherein a first hob assembly 4 is arranged on the first mounting frame 23, and a second hob assembly 4 is arranged on the second mounting frame 24 5, the first cutter assembly 4 includes a plurality of first cutter components 41 arranged in sequence along the length direction of the first mounting frame 23, and the second cutter assembly 5 includes a plurality of second cutter components 51 arranged in sequence along the length direction of the second mounting frame 24, so that the first cutter components 41, the second cutter components 51 and the edge cutter assembly 3 can be detachably mounted on the circular mounting plate 22, which is convenient for installation and disassembly, and the first cutter assembly 4, the second cutter assembly 5 and the edge cutter assembly 3 cooperate with each other, so that the rock breaking trajectory of the cutter 27 is stepped, thereby improving the rock breaking effect of the micro TBM.

[0030] In this embodiment, preferably, the first mounting bracket 23 and the second mounting bracket 24 form a central connecting portion 25 at the central position of the rotary cutter head 20. A first hob member 41 is provided at the central connecting portion 25, and the number of the first hobs 42 on the first hob member 41 located at the central connecting portion 25 can be 3, 4 or more. A plurality of first hobs 42 at the central connecting portion 25 are arranged side by side.

[0031] In this embodiment, preferably, the first hob 42, the second hob 52 and the edge hob 31 all include a mounting frame 26 and a hob 27 provided on the mounting frame 26. Mounting openings 28 for mounting the mounting frame 26 are provided on the first mounting bracket 23, the second mounting bracket 24 and the rotary cutter head 20, and the size of the mounting openings 28 is consistent with the sizes of the first hob member 41 and the second hob assembly 5. For example, if the first hob member 41 at the central connecting portion 25 includes 6 first hobs 42, the size of the mounting opening 28 at the central connecting portion 25 corresponds to that of the 6 first hobs 42, so that the 6 first hobs 42 can be arranged side by side and mounted in the mounting opening 28 at the central connecting portion 25. The mounting frame 26 includes a hollow frame body. A mounting groove for mounting the hob 27 is provided on the frame body. Mounting shafts are provided on both sides of the hob 27, and the mounting shafts can be fixedly mounted in the mounting groove. After the mounting shafts are mounted on the frame body, a part of the hob 27 is located outside the frame body. Mounting feet are also provided on the frame body, and the frame body can be mounted on the first mounting bracket 23 and the second mounting bracket 24 through the mounting feet.

[0032] In this embodiment, preferably, a radial mounting bracket 6 is further included. The radial mounting bracket 6 is arranged along the radial direction of the rotary cutter head 20. An edge hob 31 is provided at one end of the radial mounting bracket 6 away from the center of the rotary cutter head 20. One end of the radial mounting bracket 6 is connected to the first mounting bracket 23 and the second mounting bracket 24, and the other end is connected to the circumferential mounting bracket 29. The number of the radial mounting brackets 6 is set as required. The radial mounting brackets 6 can be 4, 6 or 8. At least two edge hobs 31 are mounted on each radial mounting bracket 6, and the edge hobs 31 on each radial mounting bracket 6 are located in the same annular space. For example, two edge hobs 31 are provided on each radial mounting bracket 6. The inner edge hob 31 close to the center of the rotary cutter head 20 is located in the same annular space, and the outer edge hob 31 away from the center of the rotary cutter head 20 is located in the same annular space. In this way, the edge hobs 31 on each radial mounting bracket 6 form continuous cutting. At the same time, the edge hobs 31 on the radial mounting bracket 6 are arranged in cooperation with the first hob assembly 4 and the second hob assembly 5 to improve the rock breaking effect.

[0033] In this embodiment, preferably, it further includes an over-excavation cutter member 7. The over-excavation cutter member 7 is arranged along the circumferential arc wall of the rotating cutter head 20. The over-excavation cutter member 7 includes an annular inner seat 71 and over-excavation cutters 72 arranged on the annular inner seat 71. First mounting shafts and second mounting shafts are respectively formed on both sides of the over-excavation cutter 72, and the lengths of the first mounting shaft and the second mounting shaft are different. The over-excavation cutter member 7 is also arranged on the circumferential mounting frame 29, and the over-excavation cutter member 7 and a plurality of edge cutters 31 of the edge cutter assembly 3 are located in the same annular space. The over-excavation cutter member 7 is arranged between the edge cutters 31 of the edge cutter assembly 3. The number of the over-excavation cutter members 7 is set as required. It can be one, or two, three or more. The over-excavation cutter 72 cuts first during tunneling to reduce the torque of the cutter 27 and improve the cutting efficiency.

[0034] In this embodiment, preferably, it further includes a scraper assembly 8. The scraper assembly 8 is arranged on the outer side edge of the rotating cutter head 20. The scraper assemblies 8 are arranged on both sides of the first mounting frame 23 and the second mounting frame 24, and each scraper assembly 8 is arranged along the radial direction of the rotating cutter head 20. The scraper assemblies 8 are arranged between the first mounting frame 23 and the radial mounting frame 6 and between the second mounting frame 24 and the radial mounting frame 6. The scraper assembly 8 includes a scraper holder and scrapers arranged on the scraper holder. During use, the scraper assembly 8 performs rock breaking operations on the rotation of the rotating cutter head 20.

[0035] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A micro TBM test device, comprising a propulsion system and a front-end rotating cutter head mechanism, characterized in that The front end rotating cutter disc mechanism includes a rotating cutter disc drivingly connected to the propulsion system, the rotating cutter disc includes a circular rotating disc and a circular mounting disc arranged on the circular rotating disc, an edge roller cutter assembly is arranged in the circumference of the circular mounting disc, and a first mounting frame and a second mounting frame are arranged in the diameter direction of the circular mounting disc, the first mounting frame is vertically arranged to the second mounting frame, a first roller cutter assembly is arranged on the first mounting frame, the first roller cutter assembly includes a plurality of first roller cutter components arranged in sequence along the length direction of the first mounting frame, a second roller cutter assembly is arranged on the second mounting frame, the second roller cutter assembly includes a plurality of second roller cutter components arranged in sequence along the length direction of the second mounting frame, and the number of first roller cutters on the first roller cutter component and the number of second roller cutters on the second roller cutter component gradually decreases from the center of the circular mounting disc to the edge.

2. The micro TBM test device according to claim 1, characterized in that, The first mounting frame and the second mounting frame form a central connection portion at the center of the circular mounting plate, the first roller cutter component is disposed at the central connection portion, and the first roller cutter component located at the central connection portion includes at least three first roller cutters.

3. The micro TBM test device according to claim 1, characterized in that, The edge cutter assembly includes a plurality of edge cutters, and the plurality of edge cutters are sequentially spaced apart along the circumference of the rotating cutter disc.

4. The micro TBM test device according to claim 3, characterized in that, The first hob, the second hob and the edge hob all include a mounting frame and a hob arranged on the mounting frame. The first mounting frame, the second mounting frame and the rotating cutter disc are provided with mounting openings for installing the mounting frame.

5. The micro TBM test device according to claim 4, characterized in that, It also includes a radial mounting frame, which is arranged along the radial direction of the rotating cutter disc, and the edge hob is arranged at one end of the radial mounting frame away from the center of the rotating cutter disc.

6. The micro TBM test device according to claim 1, characterized in that, It also includes an over-digging cutter component, which is arranged along the circumferential arc wall of the rotating cutter disc.

7. The micro TBM test device according to claim 6, characterized in that, The super-digging cutter component includes an annular inner seat and a super-digging cutter arranged on the annular inner seat, and a first installation axis and a second installation axis are formed on both sides of the super-digging cutter respectively, and the first installation axis and the second installation axis have different lengths.

8. The micro TBM test device according to claim 5, characterized in that, It also includes a scraper assembly, which is arranged on the outer side of the rotating blade disc, and the scraper assembly is arranged on both sides of the first mounting frame and the second mounting frame.

9. The micro TBM test device according to claim 8, characterized in that The scraper assembly is arranged between the first mounting frame and the radial mounting frame, and between the second mounting frame and the radial mounting frame.

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