Over cutter system capable of online wear monitoring and replacement

Abstract

The invention relates to an overbreak cutter system capable of online wear monitoring and replacement. The overbreak cutter system comprises spokes, a guide assembly, an overbreak cutter and a detection assembly. Cutter outlet holes are formed in the outer circular shaft faces of the spokes, containing spaces are formed in the spokes, and the cutter outlet holes are communicated with the containing spaces. The guiding assembly comprises guiding blocks arranged in pairs, and guiding grooves are formed in the guiding blocks. The overbreak cutter is located in the containing space, installed in the guide groove in a sliding mode and capable of sliding out of the guide groove. A detection blind hole is formed in the overbreak cutter, the distance between the bottom of the detection blind hole and the end face of the first end of the overbreak cutter is a set value, detection liquid is arranged in the detection blind hole, the detection assembly communicates with the blind hole, and the detection assembly can detect the pressure in the detection blind hole. The containing space is formed in the spoke, the overbreak cutter is arranged on the guide block in the containing space in a sliding mode, when the overbreak cutter needs to be replaced, the overbreak cutter only needs to slide out of the guide block, and rapid replacement of the overbreak cutter is completed.

Description

Technical Field

[0001] The invention relates to the field of tunneling equipment, and in particular to an ultra-digger system capable of online wear monitoring and replacement. Background Art

[0002] The roadheader is the main tool used in today's underground tunnel engineering and has been widely used in infrastructure projects such as urban subways, water conservancy and hydropower, railways, and highways. Usually, when the roadheader is turning, correcting deviations, or before replacing the outermost roller cutter, it is necessary to use an over-excavation cutter to radially expand the tunnel. It can be seen that the over-excavation cutter is one of the important tools equipped with the cutterhead.

[0003] At present, the super-digging cutters installed on the cutterhead of the tunnel boring machine are all driven by the hydraulic system and are not equipped with a wear monitoring system. They have the disadvantages of long system response time, low control accuracy, and large construction errors. In addition, when replacing a new super-digging cutter, the existing method is to first cut off the super-digging cutter cover plate, and then dig a cavern on the side wall of the tunnel where the super-digging cutter is located, and then the operator uses the cavern space to replace the super-digging cutter. This operation method requires the cooperation of multiple types of work such as manual excavation and in-hole welding. The operation process is cumbersome and the construction efficiency is low. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The invention provides an over-digging cutter system capable of online wear monitoring and replacement, aiming to solve the problems of complicated operation process and low construction efficiency in the prior art when replacing a new over-digging cutter.

[0006] (II) Technical solution

[0007] In order to solve the above problems, the present invention provides an online wear monitoring and replacement super-digging knife system, the super-digging knife system comprising: a spoke, a guide assembly, a super-digging knife, and a detection assembly;

[0008] The outer cylindrical surface of the spoke is provided with a knife hole, and a containing space is provided inside the spoke, and the knife hole is communicated with the containing space;

[0009] The guide assembly comprises guide blocks arranged in pairs, the guide blocks are fixedly arranged in the accommodating space, and the guide blocks are provided with guide grooves;

[0010] The super digging tool is located in the accommodating space, and the super digging tool is slidably installed in the guide groove, the super digging tool can slide out of the guide groove, and the first end of the super digging tool can extend out of the tool outlet hole;

[0011] A detection blind hole is arranged inside the super digging cutter, the distance between the bottom of the detection blind hole and the end face of the first end of the super digging cutter is a set value, a detection liquid is arranged in the detection blind hole, the detection component is connected with the blind hole, and the detection component can detect the pressure in the detection blind hole.

[0012] Preferably, the super-digging cutter comprises a cutter head and a cutter handle connected to each other;

[0013] The opposite sides of the knife handle are slidably mounted in the guide groove, and the knife head can extend out of the knife exit hole.

[0014] Preferably, a rack is provided on one side of the tool handle, the length direction of the rack is consistent with the length direction of the guide groove, a driving motor is provided on one of the two guide blocks, a gear meshing with the rack is fixedly provided on the output shaft of the driving motor, and the driving motor can drive the tool handle to move.

[0015] Preferably, the opening of one end of the detection blind hole is located on the surface of the tool handle, and the other end of the detection blind hole is located in the tool head.

[0016] Preferably, a plurality of detection blind holes of different depths are arranged in the super-excavator.

[0017] Preferably, the cross section of the knife exit hole is rectangular, a knife seat is arranged in the knife exit hole, a through hole is arranged on the knife seat, and the first end of the super digging knife can extend out of the through hole.

[0018] Preferably, three annular sealing grooves are arranged on the inner wall of the through hole, and dust rings, rod seals and wear-resistant rings are respectively arranged in the three annular sealing grooves.

[0019] Preferably, an observation through hole is provided on one side of the spoke, and the observation through hole is communicated with the accommodating space. When the super digging cutter slides along the guide groove and slides out of the guide groove, the super digging cutter can be separated from the accommodating space from the observation through hole.

[0020] Preferably, a back plate is provided on the spoke, and the back plate can cover the observation through hole.

[0021] Preferably, the guide block is provided with a plurality of reinforcing ribs fixedly connected to the spokes.

[0022] (III) Beneficial effects

[0023] The present invention provides an accommodating space in the spokes, and the super-digging cutter is slidably arranged on a guide block in the accommodating space. When the super-digging cutter needs to be replaced, the super-digging cutter only needs to be slid out of the guide block to complete the quick replacement of the super-digging cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of the super-digging cutter system of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the super digging knife system of the present invention;

[0026] Figure 3 It is a partial schematic diagram of the spoke in the present invention;

[0027] Figure 4 It is a schematic diagram of the assembly of the guide assembly and the super-digging cutter in the present invention;

[0028] Figure 5 It is a structural schematic diagram of the super digging knife in the present invention;

[0029] Figure 6 It is a structural schematic diagram of the knife holder in the present invention.

[0030] [Description of Reference Numerals]

[0031] 1: Spoke; 11: Knife hole; 12: Knife seat; 13: Through hole; 14: Annular sealing groove; 15: Observation through hole; 16: Back plate;

[0032] 2: guide assembly; 21: guide block; 22: guide groove; 23: drive motor; 24: reinforcement rib;

[0033] 3: Super digging tool; 31: Detection of blind holes; 32: Tool head; 33: Tool handle; 34: Rack;

[0034] 4: Detect components. DETAILED DESCRIPTION

[0035] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The present invention provides an over-digging cutter system capable of online wear monitoring and replacement, the over-digging cutter system comprising: a spoke 1, a guide assembly 2, an over-digging cutter 3, and a detection assembly 4. A cutter exit hole 11 is provided on the outer cylindrical axial surface of the spoke 1, and a receiving space is provided inside the spoke 1, the cutter exit hole 11 being connected to the receiving space. The guide assembly 2 comprises a pair of guide blocks 21, the guide blocks 21 are fixedly provided in the receiving space, and a guide groove 22 is provided on the guide blocks 21. The over-digging cutter 3 is located in the receiving space, and the over-digging cutter 3 is slidably installed in the guide groove 22, the over-digging cutter 3 can slide out of the guide groove 22, and the first end of the over-digging cutter 3 can extend out of the cutter exit hole 11. A detection blind hole 31 is provided inside the over-digging cutter 3, the distance between the bottom of the detection blind hole 31 and the end face of the first end of the over-digging cutter 3 is a set value, a detection liquid is provided in the detection blind hole 31, the detection assembly 4 is connected to the blind hole, and the detection assembly 4 can detect the pressure inside the detection blind hole 31.

[0040] In the present invention, the spoke 1 is a part of the cutter disc. The present application sets a detection blind hole 31 in the super-digging cutter 3. The detection blind hole 31 is connected to the detection component 4, wherein the detection component 4 is a hydraulic pipeline, that is, a hydraulic pump is connected to the detection blind hole 31 through a pipeline, a pressure gauge is provided on the pipeline, and the hydraulic pump is used to pump a detection liquid of a set pressure into the detection blind hole 31. After the detection liquid with high pressure is set in the detection blind hole 31, when the super-digging cutter 3 is worn through the detection blind hole 31, the detection liquid will leak from the detection blind hole 31, and the detection component 4 can detect that the pressure in the detection blind hole 31 becomes smaller, thereby realizing online detection of the super-digging cutter 3. An accommodating space is set in the spoke 1, and the super-digging cutter 3 is slidably set on the guide block 21 in the accommodating space. When the super-digging cutter 3 needs to be replaced, the super-digging cutter 3 only needs to be slid out of the guide block 21, thereby completing real-time detection and rapid replacement of the super-digging cutter 3.

[0041] In a preferred embodiment, the super-digging tool 3 includes a cutter head 32 and a handle 33 connected to each other. The opposite sides of the handle 33 are slidably mounted in the guide groove 22, and the cutter head 32 can extend out of the cutter hole 11. Specifically, the guide grooves 22 on the two guide blocks 21 are arranged opposite to each other, and the distance between the bottoms of the two guide grooves 22 is equal to the width of the handle 33, that is, the two sides of the handle 33 in the width direction are located in the corresponding guide groove 22, thereby realizing the sliding connection between the super-digging tool 3 and the guide block 21. The guide block 21 is provided with a plurality of reinforcing ribs 24 fixedly connected to the spoke 1.

[0042] A rack 34 is provided on one side of the handle 33, and the length direction of the rack 34 is consistent with the length direction of the guide groove 22. A driving motor 23 is provided on one of the two guide blocks 21, and a gear meshing with the rack 34 is fixedly provided on the output shaft of the driving motor 23. The driving motor 23 can drive the handle 33 to move. By driving the driving motor 23 and cooperating with the gear rack 34 for transmission, the super-digging cutter 3 can be quickly responded to and accurately controlled. In addition, the driving motor 23 is connected to the handle 33 through the gear rack 34, and the driving motor 23 can self-lock the handle 33, so that the sliding of the handle 33 on the guide block 21 can only be driven by the driving motor 23. Specifically, the driving motor 23 can be a stepping motor, and the rack 34 is welded on the handle 33 of the super-digging cutter 3. By driving the handle 33 to move with a stepping motor, the feed amount of the cutter head 32 can be accurately controlled, and at the same time, when retracting the cutter, it is only necessary to control the stepping motor to reverse.

[0043] In a preferred embodiment, the opening of one end of the detection blind hole 31 is located on the surface of the tool handle 33, and its opening is used to connect with the detection component 4 through a hose, and the other end of the detection blind hole 31 is located in the cutter head 32. A plurality of detection blind holes 31 of different depths are provided in the super digging tool 3, which can realize gradient detection and judge the degree of wear of the cutter head 32. Specifically, three detection blind holes 31 of different depths can be provided, and the distances between the bottom of the three detection blind holes 31 and the first end face of the super digging tool 3 are 5 mm, 10 mm and 15 mm respectively.

[0044] Furthermore, the cross section of the knife hole 11 is rectangular, a knife seat 12 is arranged in the knife hole 11, a through hole 13 is arranged on the knife seat 12, and the first end of the super digging knife 3 can extend out of the through hole 13. Three annular sealing grooves 14 are arranged on the inner wall of the through hole 13, and dust rings, rod seals and wear-resistant rings are arranged in the three annular sealing grooves 14 respectively. The knife seat 12 and the guide block 21 play the role of supporting the super digging knife 3 at the same time.

[0045] Finally, an observation hole 15 is provided on one side of the spoke 1, and the observation hole 15 is connected to the accommodation space. When the super-digger 3 slides along the guide groove 22 and slides out of the guide groove 22, the super-digger 3 can be separated from the accommodation space from the observation hole 15. When the wear of the super-digger 3 reaches the limit value and needs to be replaced, the stepper motor is controlled to reverse until the super-digger 3 is completely separated from the guide block 21, and the super-digger 3 is taken out from the observation hole 15 opened at the bottom of the steel structure at the end of the spoke 1, and then the new super-digger 3 is installed in the reverse steps. A back plate 16 is provided on the spoke 1, and the back plate 16 can cover the observation hole 15. The back plate 16 can be fixed on the spoke 1 by screws. The back plate 16 connected by bolts and the spatial layout of the super-digger 3 structure are planned, so that the super-digger 3 can be replaced in a limited and harsh environment.

[0046] It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, but the present invention is not limited to the above specific implementation methods. Any changes or modifications made within the scope of the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultra-digging cutter system capable of online wear monitoring and replacement, characterized in that: The super-digging knife system comprises: a spoke (1), a guide component (2), a super-digging knife (3), and a detection component (4); An accommodating space is provided inside the spoke (1), and a knife exit hole (11) is provided on the outer cylindrical axial surface of the spoke (1), and the knife exit hole (11) is communicated with the accommodating space; The guide assembly (2) comprises guide blocks (21) arranged in pairs, the guide blocks (21) being fixedly arranged in the accommodating space, and the guide blocks (21) being provided with guide grooves (22); The super digging knife (3) is located in the accommodating space, and the super digging knife (3) is slidably installed in the guide groove (22). The super digging knife (3) can slide out of the guide groove (22), and the first end of the super digging knife (3) can extend out of the knife exit hole (11); The super-excavating cutter (3) is provided with a detection blind hole (31) in its interior, the distance between the bottom of the detection blind hole (31) and the end surface of the first end of the super-excavating cutter (3) being a set value, a detection liquid being provided in the detection blind hole (31), the detection component (4) being in communication with the blind hole, and the detection component (4) being capable of detecting the pressure in the detection blind hole (31).

2. The super-digging cutter system capable of online wear monitoring and replacement as claimed in claim 1, characterized in that: The super-digging knife (3) comprises a knife head (32) and a knife handle (33) which are connected to each other; The opposite sides of the knife handle (33) are slidably mounted in the guide groove (22), and the knife head (32) can extend out of the knife exit hole (11).

3. The super-digging cutter system capable of online wear monitoring and replacement as claimed in claim 2, characterized in that: A rack (34) is provided on one side of the knife handle (33), and the length direction of the rack (34) is consistent with the length direction of the guide groove (22). A driving motor (23) is provided on one of the two guide blocks (21), and a gear meshing with the rack (34) is fixedly provided on the output shaft of the driving motor (23). The driving motor (23) can drive the knife handle (33) to move.

4. The super-digging cutter system capable of online wear monitoring and replacement as claimed in claim 3, characterized in that: The opening of one end of the detection blind hole (31) is located on the surface of the tool handle (33), and the other end of the detection blind hole (31) is located inside the tool head (32).

5. The super-digging cutter system capable of online wear monitoring and replacement as claimed in claim 3, characterized in that: The super-digging cutter (3) is provided with a plurality of detection blind holes (31) of different depths.

6. The super-digger system capable of online wear monitoring and replacement according to any one of claims 1 to 5, characterized in that: The cross section of the knife exit hole (11) is rectangular. A knife seat (12) is arranged in the knife exit hole (11). A through hole (13) is arranged on the knife seat (12). The first end of the super-excavating knife (3) can extend out of the through hole (13).

7. The super-digging cutter system capable of online wear monitoring and replacement as claimed in claim 6, characterized in that: Three annular sealing grooves (14) are arranged on the inner wall of the through hole (13), and dust rings, rod sealing members and wear-resistant rings are respectively arranged in the three annular sealing grooves (14).

8. The super-digger system capable of online wear monitoring and replacement according to any one of claims 1 to 5, characterized in that: An observation through hole (15) is provided on one side of the spoke (1), and the observation through hole (15) is communicated with the accommodating space. When the super-digging knife (3) slides along the guide groove (22) and slides out of the guide groove (22), the super-digging knife (3) can be separated from the accommodating space from the observation through hole (15).

9. The super-digging cutter system capable of online wear monitoring and replacement as claimed in claim 8, characterized in that: The spoke (1) is provided with a back plate (16), and the back plate (16) is capable of covering the observation through hole (15).

10. The super-digger system capable of online wear monitoring and replacement according to any one of claims 1 to 5, characterized in that: The guide block (21) is provided with a plurality of reinforcing ribs (24) fixedly connected to the spokes (1).

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