Assembly type hobbing cutter capable of quantitatively determining cutter abrasion

Abstract

The utility model discloses an assembly type hobbing cutter capable of quantitatively determining cutter abrasion, which comprises a cutter shaft, a cutter body is sleeved outside the cutter shaft, an assembly type cutter ring formed by a plurality of ring-shaped blades is sleeved outside the cutter body, and the assembly type cutter ring comprises an outer L-shaped ring-shaped blade, a middle T-shaped ring-shaped blade and an inner L-shaped ring-shaped blade. And a positioner is arranged between the vertical splicing surfaces of the adjacent annular blades. According to the assembly type hob, the hob ring is divided into the three groups of annular blades, when the assembly type hob is normally abraded, only the corresponding abraded annular blades need to be replaced, the whole hob ring does not need to be replaced, manual labor during replacement is reduced, replacement efficiency is improved, and the assembly type hob has the advantages that engineering cost is saved; the annular blades are connected through the high-strength bolts to form the cutter ring, installation is firm, and the strength requirement during work is guaranteed; the plurality of positioners are arranged between the vertical splicing surfaces of the upper parts of the adjacent annular blades, and the wear state of the cutter can be quantitatively positioned and determined according to the falling positions of the positioners, so that the result is more accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of assembled hobs, and in particular relates to an assembled hob capable of quantifying the wear of a cutter. Background Art

[0002] The cutter plays a vital role in the TBM construction excavation process. The wear degree of the cutter directly affects the excavation speed and efficiency of the TBM. At the same time, the wear of the cutter is inevitable. If the entire cutter is abandoned only because of partial wear, it will lead to a huge waste of resources and increased costs. Therefore, adopting a suitable cutter structure, that is, a new type of assembled cutter, is of great significance for optimizing TBM excavation efficiency and reducing costs.

[0003] At the same time, the existing wear detection of roller cutters mostly uses sound waves and vibration sensors to receive signals, monitor the friction sound between the cutter and the rock, or monitor the vibration of the cutter disc, and then judge the wear of the cutter. These methods are easily limited by the installation space and have high equipment costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an assembled hob that can quantify the wear of the tool in view of the deficiencies in the above-mentioned prior art. The design is novel and reasonable. When the assembled hob is normally worn, only the annular blade that has caused the corresponding wear needs to be replaced without replacing the entire cutter ring, thereby reducing the manpower during replacement, improving the replacement efficiency, and having the advantage of saving engineering costs. A plurality of positioners are placed between the upper vertical joint surfaces of adjacent annular blades. According to the position of the positioner falling off, the tool wear state can be quantitatively located and determined. The utility model is easy to use, the result is more accurate, and it is easy to promote and use.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an assembled hob that can quantify and determine tool wear, characterized in that it includes a cutter shaft, a cutter body is covered on the outside of the cutter shaft, and an assembled cutter ring composed of a plurality of annular blades is covered on the outside of the cutter body, the assembled cutter ring includes an outer L-shaped annular blade, a middle T-shaped annular blade and an inner L-shaped annular blade, and a positioner is provided between the vertical joint surfaces of adjacent annular blades.

[0006] The above-mentioned assembled hob that can quantify tool wear is characterized in that circular through holes for high-strength bolts to pass through are provided on the horizontal joint surfaces and upper and lower bottom surfaces of adjacent annular blades, and the axial center lines of the circular through holes are perpendicular to the plane where the annular blades are located.

[0007] The above-mentioned assembled hob capable of quantifying and determining tool wear is characterized in that: the positioner includes a plurality of sheet-like positioners arranged in a ring structure.

[0008] The above-mentioned assembled hob capable of quantifying tool wear is characterized in that the spacing between two adjacent sheet-like positioners among the plurality of sheet-like positioners arranged in a ring structure is not greater than 2 cm.

[0009] The above-mentioned assembled roller cutter capable of quantifying and determining tool wear is characterized in that the sheet-like locator is a GPS sheet-like locator, and the GPS sheet-like locator communicates with the industrial computer of the tunnel boring machine.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. The assembled hob of the utility model divides the cutter ring into three groups of annular blades. When the assembled hob is normally worn, only the annular blades that are worn need to be replaced instead of the entire cutter ring, which reduces the labor during replacement and improves replacement efficiency. It has the advantage of saving engineering costs. High-strength bolts are used to connect the annular blades to form a cutter ring, which is firmly installed and easy to disassemble, ensuring the strength requirements during operation.

[0012] 2. The utility model adopts a plurality of positioners placed between the upper vertical joint surfaces of adjacent annular blades. According to the position of the positioner falling off, the wear state of the tool can be quantitatively located and determined. It is easy to use and the result is more accurate.

[0013] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of splitting some blade segments of the utility model.

[0016] Description of reference numerals:

[0017] 1—knife shaft; 2—knife body; 3—assembled knife ring;

[0018] 4—outer L-shaped circular blade; 5—middle T-shaped circular blade; 6—inner L-shaped circular blade;

[0019] 7—High-strength bolt; 8—Circular through hole; 9—Locator. DETAILED DESCRIPTION

[0020] like Figure 1 and Figure 2As shown, the utility model includes a knife shaft 1, the knife shaft 1 is covered with a knife body 2, the knife body 2 is covered with an assembled knife ring 3 composed of a plurality of annular blades, the assembled knife ring 3 includes an outer L-shaped annular blade 4, a middle T-shaped annular blade 5 and an inner L-shaped annular blade 6, and a positioner 9 is provided between the vertical joint surfaces of adjacent annular blades.

[0021] It should be noted that the assembled cutter ring 3 includes an outer L-shaped annular blade 4, a middle T-shaped annular blade 5 and an inner L-shaped annular blade 6. When the assembled hob is normally worn, it is only necessary to replace the corresponding annular blade that is worn, without replacing the entire cutter ring. This reduces the manpower during replacement and improves replacement efficiency, which has the advantage of saving engineering costs. High-strength bolts are used to connect the annular blades to form a cutter ring, which is firmly installed and easy to disassemble, ensuring the strength requirements during operation. Multiple positioners are placed between the upper vertical joint surfaces of adjacent annular blades. According to the position of the positioner falling off, the wear state of the tool can be quantitatively located and determined. It is easy to use and the results are more accurate.

[0022] In this embodiment, a plurality of roller bearings are installed on the inner side of the cutter body 2, which is rotatably installed on the circumferential outer wall of the cutter shaft 1 through the roller bearings. An installation groove is opened on the circumferential outer wall of the cutter body 2, and the assembled cutter ring 3 is fixed in the installation groove by a retaining ring and rotates with the cutter body 2.

[0023] In this embodiment, circular through holes 8 for high-strength bolts 7 to pass through are provided on the horizontal joint surfaces and upper and lower bottom surfaces of adjacent annular blades, and the axis lines of the circular through holes 8 are perpendicular to the plane where the annular blades are located.

[0024] Assemble the outer L-shaped annular blade 4 and the middle T-shaped annular blade 5 or the middle T-shaped annular blade 5 and the inner L-shaped annular blade 6 together, and then fix the adjacent blades together by inserting high-strength bolts 7 into the circular through holes 8. The high-strength bolts ensure that the connection is stable and not loose.

[0025] In this embodiment, the positioner 9 includes a plurality of sheet-shaped positioners arranged in a ring structure.

[0026] In this embodiment, the distance between two adjacent sheet-like positioners among the plurality of sheet-like positioners arranged in a ring structure is no greater than 2 cm.

[0027] In this embodiment, the sheet-shaped locator is a GPS sheet-shaped locator, and the GPS sheet-shaped locator communicates with the industrial computer of the tunnel boring machine.

[0028] When the utility model is used, when the roller cutter wears to the connection between the outer L-shaped annular blade 4 and the middle T-shaped annular blade 5 or the connection between the middle T-shaped annular blade 5 and the inner L-shaped annular blade 6, the sheet locator attached between the fitting surfaces will fall off, and a gap will appear in the positioning of the cutter ring structure. The tunnel boring machine industrial computer determines the wear position based on the adjacent GPS sheet locator data, and can quantitatively locate and determine the cutter wear. It is easy to use and the result is more accurate.

[0029] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. An assembled hob capable of quantifying tool wear, characterized in that: The invention comprises a knife shaft (1), a knife body (2) is sleeved on the outside of the knife shaft (1), an assembled knife ring (3) composed of a plurality of annular blades is sleeved on the outside of the knife body (2), the assembled knife ring (3) comprises an outer L-shaped annular blade (4), a middle T-shaped annular blade (5) and an inner L-shaped annular blade (6), and a positioner (9) is provided between the vertical joint surfaces of adjacent annular blades.

2. An assembled hob capable of quantifying tool wear according to claim 1, characterized in that: Circular through holes (8) for high-strength bolts (7) to pass through are provided on the horizontal joint surfaces and upper and lower bottom surfaces of adjacent annular blades, and the axial center lines of the circular through holes (8) are perpendicular to the plane where the annular blades are located.

3. An assembled hob capable of quantifying tool wear according to claim 1, characterized in that: The positioner (9) comprises a plurality of sheet-shaped positioners arranged in a ring structure.

4. An assembled hob capable of quantifying tool wear according to claim 3, characterized in that: The distance between two adjacent sheet-like positioners among the plurality of sheet-like positioners arranged in a ring structure is no greater than 2 cm.

5. The assembled hob capable of quantifying tool wear according to claim 3, characterized in that: The sheet-shaped locator is a GPS sheet-shaped locator, and the GPS sheet-shaped locator communicates with the industrial computer of the tunnel boring machine.

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