Tunnel construction shield cutter tunneling simulation device

Abstract

The invention discloses a shield cutter tunneling simulation device for tunnel construction. The shield cutter tunneling simulation device comprises a bottom plate; the base is placed on the bottom plate; the concrete slab is fixed on the base; a plurality of knife rests are fixedly connected to the lower portion of the mounting frame, the shield cutters are rotationally mounted on the knife rests in the circumferential direction of the concrete slab, and the shield cutters, the knife rests and the mounting frame are placed on the concrete slab; the lifting part is arranged above the bottom plate; by reducing the height of the lifting part and increasing the pressure between the shield cutter and the concrete slab, the shield cutter performs tunnel excavation simulation; by increasing the height of the lifting part and removing the pressure between the shield cutter and the concrete slab, the shield cutter stops tunnel excavation simulation, and wear detection of the shield cutter is carried out. The contact pressure between the shield cutter on the mounting frame and the concrete slab is adjusted through the lifting part, so that the purpose of simulating the shield tunneling process is achieved, and the problem that the detection time is prolonged due to the fact that bin opening is needed in shield cutter abrasion detection is solved.

Description

Technical Field

[0001] The invention relates to the field of tunnel shield construction devices, and in particular to a tunnel construction shield cutter excavation simulation device. Background Art

[0002] During tunnel excavation, the shield cutter directly acts on the excavation face. Its working environment is harsh, the load is unstable, and it is subject to great load impact. It is the most easily damaged component during the excavation process. Therefore, the quality of the shield cutter directly affects the excavation efficiency and construction cost. In order to ensure that the quality of the shield cutters produced by the manufacturer meets the requirements and reduce the number of shield openings, it is usually necessary to select shield cutters of multiple specifications from multiple manufacturers when purchasing shield cutters, record the wear amount through trial use and compare the wear amount, and finally select the best quality shield cutters as construction shield cutters. However, this method requires multiple openings to replace shield cutters and record wear data. On the one hand, the opening process is complicated and must be carried out during the construction of the shield machine. At the same time, each opening has a 200-ring excavation cycle, which will also prolong the wear detection time; on the other hand, opening also has certain risks, so a device is needed to record and compare the wear amount of multiple shield cutters without opening.

[0003] Generally speaking, the wear of shield cutters is different for different geological formations, and the wear of shield cutters is usually estimated based on experience in the prior art. Therefore, the actual wear of shield cutters is generally quite different from the results estimated based on experience, which leads to inaccurate estimates of shield cutter wear and affects the determination of replacement time for worn shield cutters during shield tunneling. The aforementioned trial method is not actually applicable to the estimation of tunneling time / distance required for shield cutter wear to reach replacement standards during tunneling due to the objective difficulties and risks of the aforementioned warehouse opening.

[0004] To this end, the present application proposes a tunneling simulation device, which simulates the interaction between the shield cutter and the geology during shield tunneling to facilitate the wear detection test of the shield cutter, thereby achieving the purpose of quickly and simply recording and comparing the wear of various shield cutters. It can also more accurately obtain the time required for the wear of the shield cutter to reach the replacement standard during the actual tunneling process, thereby solving the above-mentioned technical problems. Summary of the invention

[0005] The present invention provides a tunnel construction shield cutter excavation simulation device to solve the problem in the prior art that the wear condition of the shield cutter needs to be opened for detection, and the wear condition of the shield cutter under different geological formations cannot be accurately estimated.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: A tunnel construction shield cutter excavation simulation device, comprising: Base plate; A base, placed on the bottom plate; A concrete slab, fixed to the base; The mounting frame has a plurality of tool holders fixedly connected below, and the shield cutters are mounted on the tool holders in a rotatable manner along the circumferential direction of the concrete slab, and the shield cutters, tool holders and mounting frame are placed on the concrete slab; A driving motor, used for driving the mounting frame to rotate vertically axially; The connecting part is arranged above the bottom plate, and a mounting box is arranged below the connecting part. A rolling groove is arranged on the lower surface of the mounting box, and a ball is arranged in the rolling groove. The ball rolls in the positioning groove on the upper surface of the mounting frame; By lowering the height of the connection, the pressure between the shield cutter and the concrete slab is increased, so that the shield cutter can simulate tunnel excavation; By increasing the height of the connection, the pressure between the shield cutter and the concrete slab is removed, so that the shield cutter stops tunnel excavation simulation and shield cutter wear detection is carried out.

[0007] In particular, the connecting portion includes a plurality of support rods arranged at the edge of the bottom plate, each support rod having a threaded section at the top; the top plate is sleeved on the support rods, and a first nut sleeved on the threaded section is provided below the top plate, and a second nut sleeved on the threaded section is provided above the top plate, and the second nut is closely attached to the upper surface of the top plate; It also includes a connecting rod arranged on the lower surface of the top plate, and a mounting box is arranged at the bottom end of the connecting rod.

[0008] In particular, the connecting part includes a plurality of support rods arranged at the edge of the bottom plate, and a top plate is fixedly sleeved on the top of the support rods; It also includes a connecting rod that vertically penetrates the top plate, the connecting rod is a threaded rod that cooperates with the thread of the top plate, and the mounting box is arranged at the bottom end of the connecting rod; the top of the connecting rod is also provided with a force applying head for applying rotation.

[0009] In particular, the raising and lowering of the connection part height is replaced by raising or lowering the tool holder height to adjust the pressure between the shield cutter and the concrete slab; specifically, the tool holder includes two vertically arranged electric push rods, a bearing seat is provided at the bottom of the tool holder, the shield cutter is rotatably mounted on the bearing seat along the circumferential direction of the concrete slab, and the shield cutter, the tool holder and the mounting frame are placed on the concrete slab; A driving motor, used for driving the mounting frame to rotate vertically axially; It also includes a plurality of support rods arranged at the edge of the bottom plate, and a top plate is fixedly sleeved on the top of the support rods; It also includes a connecting rod arranged on the lower surface of the top plate, a mounting box is arranged at the bottom end of the connecting rod, a rolling groove is arranged on the lower surface of the mounting box, a ball is arranged in the rolling groove, and the ball rolls in the positioning groove on the upper surface of the mounting frame.

[0010] In particular, the base includes a pedestal arranged in the middle of the bottom plate, a plurality of mounting columns are evenly arranged around the pedestal, and vertical mounting holes are arranged on the tops of the mounting columns; the concrete plate includes a mounting plate and a concrete member arranged on the mounting plate; the mounting plate is placed on the pedestal, and mounting blocks are radially extended outward around it, the mounting blocks are aligned with the mounting columns, and are locked by mounting bolts.

[0011] Furthermore, it also includes a force-sensitive sensor disposed in the installation box, and the force-sensitive sensor is used to measure the magnitude of the force between the ball and the installation box; and also includes a digital display screen electrically connected to the force-sensitive sensor.

[0012] Furthermore, it also includes a memory for recording changes in the value of the force sensitive sensor.

[0013] In particular, a polygonal segment is provided in the middle of the output of the driving motor, and the top plate is provided with a polygonal through groove matching the polygonal segment. The thickness of the top plate is smaller than the polygonal segment, and a horizontal limit pin is respectively passed through the output shaft above and below the polygonal segment.

[0014] In particular, the radii corresponding to the cutting trajectories of the multiple shield cutters in cutting the concrete slab are different.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: The present invention adjusts the contact pressure between the shield cutter on the mounting frame and the concrete slab through the connecting part, thereby achieving the purpose of simulating the shield tunneling process, thereby avoiding the problem of prolonged detection time due to the need to open the chamber for shield cutter wear detection.

[0016] The present invention adjusts the contact pressure between the shield cutter on the mounting frame and the concrete slab through the connecting part, so as to achieve the simulated excavation of multiple shield cutters at the same time, thereby quickly, intuitively and accurately obtaining the difference in wear resistance of different shield cutters under the same geological conditions according to the wear conditions of the shield cutters, effectively shortening the time required for the wear detection process.

[0017] The present invention can also simulate the influence of different geology and different excavation speeds on the wear of shield cutters by adjusting different concrete slab components and different contact pressures, thereby helping the construction site to quickly select the optimal shield cutter type. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the device of the present invention.

[0019] Figure 2 It is a schematic diagram of the lateral structure of the device of the present invention.

[0020] The meanings of the symbols in the figure are: Base plate—1; support rod—101; threaded section—102; first nut—103; second nut—104; base—105; connecting rod—106; force applying head—107; base—108; mounting column—109; Top plate—2; Concrete slab—3; mounting plate—310; concrete member—311; mounting block—312; Mounting frame—4; tool holder—401; shield tool—402; positioning slot—403; Driving motor—5; polygonal segment—501; limiting pin—502; Mounting box—6; rolling groove—601; ball—602. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention, so as to have a further understanding of the concept of the present invention, the technical problems solved, the technical features constituting the technical scheme and the technical effects brought about.

[0022] like Figure 1 and Figure 2 As shown, a tunnel construction shield cutter excavation simulation device comprises: Bottom plate 1; The base 105 is placed on the bottom plate 1; A concrete slab 3 is fixed on a base 105; The mounting frame 4 has a plurality of tool holders 401 fixedly connected below, and the shield cutter 402 is rotatably mounted on the tool holder 401 along the circumferential direction of the concrete slab 3, and the shield cutter 402, the tool holder 401 and the mounting frame 4 are placed on the concrete slab 3; A driving motor 5 is used to drive the mounting frame 4 to rotate axially and vertically; The connecting part is arranged above the bottom plate 1, and a mounting box 6 is arranged below the connecting part. A rolling groove 601 is arranged on the lower surface of the mounting box 6, and a ball 602 is arranged in the rolling groove 601. The ball 602 rolls in the positioning groove 403 on the upper surface of the mounting frame 4; By lowering the height of the connection part, the pressure between the shield cutter 402 and the concrete slab 3 is increased, so that the shield cutter 402 performs tunnel excavation simulation; By increasing the height of the connection part, the pressure between the shield cutter 402 and the concrete slab 3 is released, so that the shield cutter 402 stops the tunnel excavation simulation, and the wear detection of the shield cutter 402 is performed.

[0023] In the present invention, the main principle is as follows: the bottom plate 1, the base 105, and the concrete plate 3 constitute the bottom bearing part of the whole device, the mounting frame 4 is used to install the tool holder 401, and the shield cutter 402 is installed on the tool holder 401. The mounting frame 4 is driven by the driving motor 5 to rotate in the axial vertical direction, so that the shield cutter 402 at the bottom of the tool holder 401 cuts the concrete plate 3 along the circumferential direction, thereby simulating the tunneling process of the shield machine. It should be noted that, in order to facilitate installation and fixation, the driving motor 5 can also be installed and fixed on the top plate 2 in a horizontal direction, and the output direction of the driving motor 5 can be adjusted by using a bevel gear set, from the horizontal direction to the vertical direction. At this time, by reducing the height of the connection part, the pressure between the shield cutter 402 and the concrete plate 3 is increased, so that the shield cutter 402 simulates tunnel excavation. The more the height is reduced, the greater the pressure between the shield cutter 402 and the concrete plate 3, the stronger the cutting effect of the shield cutter 402 on the concrete plate 3, and the faster the wear of the shield cutter 402. Since the shield cutters 402 of different manufacturers or different specifications and models are all released from the concrete slab 3, multiple shield cutters 402 can be simulated synchronously through a simulated excavation process, and the optimal shield cutter 402 under the current concrete slab 3 ratio and the current pressure / shield excavation speed can be determined according to the actual wear of the simulated shield cutters 402. At the same time, the effect and influence of the shield cutter 402 under different excavation speeds can be simulated by adjusting the descent amplitude of the connection part, thereby effectively increasing the versatility of the device of the present invention. It should be noted that the wear detection described in the present invention generally refers to a simple comparison of the wear depth and the distribution density / uniformity of the wear points according to the wear condition, and a simple characterization can be performed according to the above changes.

[0024] As a preferred embodiment, the connecting portion includes a plurality of support rods 101 arranged at the edge of the bottom plate 1, and each support rod 101 is provided with a threaded section 102 at the top; the top plate 2 is sleeved on the support rods 101, and a first nut 103 sleeved on the threaded section 102 is provided below the top plate 2, and a second nut 104 sleeved on the threaded section 102 is provided above the top plate 2, and the second nut is tightly attached to the upper surface of the top plate 2; It also includes a connecting rod 106 arranged on the lower surface of the top plate 2, and the installation box 6 is arranged at the bottom end of the connecting rod 106.

[0025] This embodiment discloses a connection structure that can be implemented. Specifically, the connection part in this embodiment includes a support rod 101, a threaded section 102, a first nut 103, a second nut 104, a top plate 2 and a connecting rod 106. The lifting function mainly relies on the mutual cooperation between the threaded section 102 on the support rod 101 and the top plate 2, the first nut 103 and the second nut 104. The height of the top plate 2 is adjusted by adjusting the height of the first nut 103 on the threaded section 102, thereby changing the height of the connecting rod 106 and the installation box 6 below the top plate 2, thereby providing different pressures to the installation box 6. The second nut 104 is mainly used to limit the height position above the top plate 2 to prevent the top plate 2 from shaking. When the height of the top plate 2 needs to be adjusted, the first nut 103 is adjusted separately, multiple times and gradually to ensure the stability of the lifting process.

[0026] As a preferred embodiment, the connection part includes a plurality of support rods 101 arranged at the edge of the bottom plate 1, and a top plate 2 is fixedly sleeved on the top of the support rods 101; It also includes a connecting rod 106 that vertically penetrates the top plate 2. The connecting rod 106 is a threaded rod that is threadedly matched with the top plate 2. The mounting box 6 is arranged at the bottom end of the connecting rod 106. A force applying head 107 for applying rotation is also arranged at the top of the connecting rod 106.

[0027] This embodiment provides another connection structure that can be implemented. Specifically, the connection in this embodiment mainly includes a support rod 101, a top plate 2, and a connecting rod 106. The lifting function is mainly realized by the cooperation between the connecting rod 106 and the top plate 2. When the height of the top plate 2 needs to be adjusted, the force applying head 107 is adjusted separately, multiple times, and gradually to ensure that the connecting rod 106 penetrates the top plate 2 for height adjustment, thereby changing the height of the connecting rod 106 and the installation box 6 below the top plate 2, thereby providing different pressures on the installation box 6.

[0028] As a preferred embodiment, raising and lowering the height of the connection portion is replaced by raising or lowering the height of the tool holder 401 to adjust the pressure between the shield cutter 402 and the concrete slab 3; specifically, the tool holder 401 includes two vertically arranged electric push rods, a bearing seat is provided at the bottom of the tool holder 401, the shield cutter 402 is rotatably mounted on the bearing seat along the circumferential direction of the concrete slab 3, and the shield cutter 402, the tool holder 401 and the mounting frame 4 are placed on the concrete slab 3; A driving motor 5 is used to drive the mounting frame 4 to rotate axially and vertically; It also includes a plurality of support rods 101 arranged at the edge of the bottom plate 1, and a top plate 2 is fixedly sleeved on the top of the support rods 101; It also includes a connecting rod 106 arranged on the lower surface of the top plate 2, a mounting box 6 is provided at the bottom end of the connecting rod 106, a rolling groove 601 is provided on the lower surface of the mounting box 6, a ball 602 is provided in the rolling groove 601, and the ball 602 rolls in the positioning groove 403 on the upper surface of the mounting frame 4.

[0029] This embodiment provides another simulation device structure that can be implemented, in which the part that achieves a similar effect to the aforementioned connecting part is a tool holder 401, the vertical rod in the tool holder 401 is selected to be an electric push rod, and a bearing seat for mounting a shield cutter 402 is provided at the bottom of the electric push rod. By controlling the extension and retraction of the vertical rod of the tool holder 401, the height of the connecting rod 106 and the mounting box 6 below the top plate 2 is changed, thereby providing different pressures to the mounting box 6.

[0030] As a preferred embodiment, the base 105 includes a base 108 arranged in the middle of the bottom plate 1, and a plurality of mounting columns 109 are evenly arranged around the base 108, and a vertical mounting hole is provided on the top of the mounting column 109; the concrete plate 3 includes a mounting plate 310 and a concrete member 311 arranged on the mounting plate 310; the mounting plate 310 is placed on the base 108, and a mounting block 312 is radially extended outward around it, and the mounting block 312 is aligned with the mounting column 109 and is locked by mounting bolts.

[0031] The present embodiment provides a detailed structure of a base 105. Specifically, a base 108 is placed in the middle of the bottom plate 1, for placing a concrete slab 3 and for transferring / sharing the overall load of the device. A plurality of mounting columns 109 are evenly arranged around the base 108, for cooperating with mounting bolts and mounting blocks 312 to fix the mounting plate 310, thereby ensuring that the concrete slab 3 will not deviate or slide during the cutting process simulating the excavation process.

[0032] As a preferred embodiment, it also includes a force-sensitive sensor disposed in the installation box 6, and the force-sensitive sensor is used to measure the magnitude of the force between the ball 602 and the installation box 6; and also includes a digital display screen electrically connected to the force-sensitive sensor.

[0033] This embodiment provides a method for characterizing the pressure magnitude. Specifically, a force-sensitive sensor is arranged in the mounting box 6 to measure the magnitude of the force between the ball 602 and the mounting box 6. The force between the ball 602 and the mounting box 6 is then used to simulate the influence of different excavation speeds of the excavation process on the shield cutter 402. This makes the result of the present invention go from qualitative to quantitative, making the detection result of the present invention more accurate, and is also beneficial to ensure that the force magnitude is constant when installing different shield cutters 402.

[0034] As a preferred embodiment, it also includes a memory for recording changes in the value of the force sensitive sensor.

[0035] In this embodiment, a memory is provided to record the value change of the force-sensitive sensor, thereby effectively recording the force law in the simulated tunneling process. For example, in the initial stage, since the cutter head rotation speed needs to be gradually increased, a smaller tunneling speed can be used in the early stage, that is, a smaller simulation pressure can be used, and the pressure can be increased in the later stage, thereby effectively simulating the influence of the shield tunneling process on the shield cutter 402.

[0036] As a preferred embodiment, a polygonal segment 501 is provided in the middle of the output of the driving motor 5, and a polygonal through groove matching the polygonal segment 501 is provided on the mounting frame 4, the thickness of the polygonal through groove is smaller than the thickness of the polygonal segment 501, and a horizontal limit pin 502 is respectively passed through the output shaft above and below the polygonal segment 501.

[0037] In this embodiment, a detailed structure of a driving motor driving the mounting frame 4 to rotate is provided. Specifically, the mounting frame 4 is provided with a polygonal through slot matching the polygonal segment 501. The polygonal segment 501 cooperates with the polygonal through slot to realize the function of driving the mounting frame 4 to rotate. At the same time, since the mounting frame 4 is displaced in the vertical direction, in order to ensure that the driving motor can always play the role of driving rotation, the thickness of the polygonal through slot is smaller than the thickness of the polygonal segment 501, and the polygonal through slot is limited by a horizontal limiting pin 502 to prevent the polygonal through slot from being separated from the polygonal segment 501.

[0038] As a preferred embodiment, the radii corresponding to the cutting tracks of the multiple shield cutters 402 cutting the concrete slab 3 are different.

[0039] In this embodiment, in order to prevent the shield cutters 402 from influencing each other during the cutting process, the radii of the contact points between the multiple shield cutters 402 and the concrete slab 3 on the concrete slab 3 are different, thereby improving the accuracy of the simulation.

[0040] The terms “connection” and “fixation” mentioned in the description of the present invention may refer to fixed connection, processing and forming, welding or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0041] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inside", "outside", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tunnel construction shield tool excavation simulation device, characterized in that: include: Bottom plate (1); A base (105) is placed on the bottom plate (1); A concrete slab (3) fixed on a base (105); A mounting frame (4) having a plurality of tool holders (401) fixedly connected thereto below, wherein the shield cutter (402) is rotatably mounted on the tool holder (401) along the circumferential direction of the concrete slab (3), and the shield cutter (402), the tool holder (401) and the mounting frame (4) are placed on the concrete slab (3); A driving motor (5) for driving the mounting frame (4) to rotate axially and vertically; A connecting portion is arranged above the bottom plate (1), a mounting box (6) is arranged below the connecting portion, a rolling groove (601) is arranged on the lower surface of the mounting box (6), a ball (602) is arranged in the rolling groove (601), and the ball (602) rolls in the positioning groove (403) on the upper surface of the mounting frame (4); By lowering the height of the connection portion, the pressure between the shield cutter (402) and the concrete slab (3) is increased, so that the shield cutter (402) performs tunnel excavation simulation; By increasing the height of the connection portion, the pressure between the shield cutter (402) and the concrete slab (3) is relieved, so that the shield cutter (402) stops tunnel excavation simulation, and the wear detection of the shield cutter (402) is performed.

2. A tunnel construction shield tool excavation simulation device as claimed in claim 1, characterized in that: The connecting portion comprises a plurality of support rods (101) arranged at the edge of the bottom plate (1), each support rod (101) being provided with a threaded section (102) at the top; the top plate (2) is sleeved on the support rods (101), and a first nut (103) sleeved on the threaded section (102) is provided below the top plate (2), and a second nut (104) sleeved on the threaded section (102) is provided above the top plate (2), the second nut being closely attached to the upper surface of the top plate (2); It also includes a connecting rod (106) arranged on the lower surface of the top plate (2), and the installation box (6) is arranged at the bottom end of the connecting rod (106).

3. A tunnel construction shield tool excavation simulation device as claimed in claim 1, characterized in that: The connecting portion comprises a plurality of support rods (101) arranged at the edge of the bottom plate (1), and a top plate (2) is fixedly sleeved on the top of the support rods (101); It also includes a connecting rod (106) vertically penetrating the top plate (2), wherein the connecting rod (106) is a threaded rod threadably matched with the top plate (2), and the mounting box (6) is arranged at the bottom end of the connecting rod (106); a force applying head (107) for applying rotation is also arranged at the top of the connecting rod (106).

4. A tunnel construction shield tool excavation simulation device as claimed in claim 1, characterized in that: The raising and lowering of the height of the connection portion is replaced by raising or lowering the height of the tool holder (401) to adjust the pressure between the shield cutter (402) and the concrete slab (3); specifically, the tool holder (401) comprises two vertically arranged electric push rods, a bearing seat is provided at the bottom of the tool holder (401), the shield cutter (402) is rotatably mounted on the bearing seat along the circumferential direction of the concrete slab (3), and the shield cutter (402), the tool holder (401) and the mounting frame (4) are placed on the concrete slab (3); A driving motor (5) for driving the mounting frame (4) to rotate axially and vertically; It also includes a plurality of support rods (101) arranged at the edge of the bottom plate (1), and a top plate (2) is fixedly sleeved on the top of the support rods (101); It also includes a connecting rod (106) arranged on the lower surface of the top plate (2), a mounting box (6) being provided at the bottom end of the connecting rod (106), a rolling groove (601) being provided on the lower surface of the mounting box (6), a ball (602) being provided in the rolling groove (601), and the ball (602) rolling in a positioning groove (403) on the upper surface of the mounting frame (4).

5. The tunnel construction shield tool excavation simulation device according to any one of claims 1 to 4, characterized in that: The base (105) comprises a base (108) arranged in the middle of the bottom plate (1), a plurality of mounting columns (109) are evenly arranged around the base (108), and vertical mounting holes are arranged on the tops of the mounting columns (109); the concrete plate (3) comprises a mounting plate (310) and a concrete member (311) arranged on the mounting plate (310); the mounting plate (310) is placed on the base (108), and a mounting block (312) is radially extended outward around the mounting plate (310); the mounting block (312) is aligned with the mounting column (109) and is locked by mounting bolts.

6. The tunnel construction shield tool excavation simulation device according to any one of claims 1 to 4, characterized in that: It also includes a force-sensitive sensor disposed in the installation box (6), the force-sensitive sensor being used to measure the magnitude of the force acting between the ball (602) and the installation box (6); and a digital display screen electrically connected to the force-sensitive sensor.

7. A tunnel construction shield tool excavation simulation device as claimed in claim 6, characterized in that: It also includes a memory for recording changes in the value of the force-sensitive sensor.

8. The tunnel construction shield tool excavation simulation device according to any one of claims 1 to 4, characterized in that: A polygonal section (501) is provided at the middle of the output of the driving motor (5), the mounting frame (4) is provided with a polygonal through slot matching the polygonal section (501), the thickness of the polygonal through slot is smaller than the thickness of the polygonal section (501), and a horizontal limit pin (502) is respectively passed through the output shaft above and below the polygonal section (501).

9. The tunnel construction shield tool excavation simulation device according to any one of claims 1 to 4, characterized in that: The radii corresponding to the cutting tracks of the plurality of shield cutters (402) cutting the concrete slab (3) are different.

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