Half-split type quick dismounting locking nut for TBM hob and dismounting tool

Abstract

The utility model relates to the technical field of tunnel boring machine hobs, in particular to a split-half type quick disassembly locking nut for a TBM hob, which comprises an upper locking nut and a lower locking nut, the upper locking nut comprises a right annular part and upper staggered parts connected to two ends of the right annular part, the right annular part is positioned on the right side of a nut body, and the lower annular part is positioned on the right side of the nut body. The upper staggered part is positioned at the top end of the nut body; the lower locking nut comprises a left annular part and lower staggered parts connected to the two ends of the left annular part, the left annular part is located on the left side of the nut body, and the lower staggered parts are located at the bottom end of the nut body; the left annular part and the right annular part jointly form an annular part, an auxiliary hole is formed in the annular part, the upper staggered part and the lower staggered part are spliced to form a staggered part, and a through mounting hole is formed in the staggered part; according to the utility model, quick disassembly can be realized, a sledge hammer knocking or air gouging and gas cutting mode is not needed, the labor intensity of workers is reduced, the utilization rate of accessories is high, and the disassembly cost of the hob is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel boring machine cutters, in particular to a half-type quick-disassembly locking nut and a disassembly tool for a TBM cutter. Background Art

[0002] A full-face tunnel boring machine (TBM) is a special mechanical equipment for large tunnels. It uses a cutterhead to drive the roller to roll and break rock. It has the advantages of high degree of mechanization, fast and safe, low labor intensity, and little ground disturbance. It plays a key role in inter-basin water diversion, water diversion and water supply for large hydropower stations, and the construction of long and large tunnels for railway projects crossing mountains.

[0003] The disc cutter is located at the front of the TBM and is a key component that comes into direct contact with the rock. When the cutter ring fails abnormally or wears to the limit, the cutter needs to be replaced in time, and the replaced cutter needs to be disassembled, repaired, and reassembled to analyze the cause and optimize reuse. However, the locking nut is difficult to remove during the disassembly of the cutter, and it needs to be manually hit with a sledgehammer, which is labor-intensive. When the locking nut is completely locked, it needs to be disassembled by air planing or gas cutting, and it is easy to damage the end cover seal installation position, causing the end cover to be scrapped. The cost of disassembling the cutter is high, which greatly affects the TBM excavation efficiency.

[0004] Therefore, it is urgent to design a locking nut for TBM cutter that can be quickly disassembled. Summary of the invention

[0005] The utility model aims to solve the problems in the prior art that the locking nut of the hob is difficult to disassemble and the disassembly cost is high, and provides a half-type quick-disassembly locking nut for the TBM hob. When inspecting and repairing the hob, there is no need to use a sledgehammer to hit it, and it can be quickly disassembled, thereby reducing manual labor intensity and reducing the disassembly cost of the hob.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A half-type quick-detachable locking nut for a TBM cutter comprises a locking nut body, the nut body is annular, a thread is arranged on the annular inner hole surface of the nut body, the nut body is formed by splicing an upper locking nut and a lower locking nut, and the nut body is used to lock the cutter.

[0008] The upper locking nut includes a right annular portion and an upper staggered portion connected to both ends of the right annular portion, the right annular portion is located on the right side of the nut body, the upper staggered portion is located at the top of the nut body, and the right annular portion and the upper staggered portion are an integral structure.

[0009] The lower locking nut includes a left annular portion and a lower staggered portion connected to both ends of the left annular portion, the left annular portion is located on the left side of the nut body, the lower staggered portion is located at the bottom end of the nut body, and the left annular portion and the lower staggered portion are an integral structure.

[0010] The left annular portion and the right annular portion together constitute an annular portion, and a process hole is provided on the annular portion, and the process hole is used to insert a pin; the upper staggered portion and the lower staggered portion are spliced ​​together to form an staggered portion, and a transparent mounting hole is provided on the staggered portion, and a screw is inserted into the mounting hole, and the screw is used to fix the upper locking nut and the lower locking nut.

[0011] Furthermore, the left annular portion and the right annular portion are symmetrically arranged on both sides of the staggered portion, the staggered portion and the annular portion have equal thickness, the upper staggered portion and the lower staggered portion have equal thickness, and the annular portion and the staggered portion together constitute the nut body.

[0012] Furthermore, the screw is a hexagon socket countersunk screw, so that the surface of the nut body remains flat.

[0013] Furthermore, the depth of the process hole is smaller than the depth of the mounting hole.

[0014] A disassembly tool for a quick-disassembly half-type locking nut is used to disassemble a quick-disassembly half-type locking nut for a TBM hob, comprising a locking nut wrench and a pin. The locking nut wrench comprises an annular base, handles are arranged on both sides of the annular base, and a plurality of disassembly holes are arranged on the plane of the annular base, and the pins are inserted into the disassembly holes. The disassembly tool is used to disassemble the quick-disassembly half-type locking nut for a TBM hob.

[0015] Furthermore, the height of the pin is greater than the height of the annular base, and the plurality of disassembly holes are evenly arranged on the annular base; during disassembly, the locking nut wrench and the pin are fitted onto the locking nut process hole and can be easily rotated without the need for hitting with a sledgehammer.

[0016] Through the above technical solution, the beneficial effects of the utility model are:

[0017] The utility model is provided with a half-type locking nut, wherein the nut body is formed by splicing an upper locking nut and a lower locking nut, wherein the upper locking nut and the lower locking nut are semi-circular in shape as a whole, and the upper locking nut and the lower locking nut are arranged alternately and fixed by screws. When disassembling the hob, only the screws need to be removed to separate the upper locking nut and the lower locking nut, and the half-type quick-disassembly locking nut can be easily removed with the aid of a disassembly tool, without damaging the hob and other accessories, thereby reducing the labor intensity, improving the efficiency of tool maintenance, and reducing the cost of disassembling the hob.

[0018] The utility model provides a disassembly tool for a half-type locking nut, the disassembly tool comprising an annular base, a disassembly hole being provided on the annular base, a pin being inserted into the disassembly hole, the disassembly hole, the pin and the process hole of the locking nut being provided correspondingly, when the locking nut is tightened, the pin is inserted into the process hole and the disassembly hole, the locking nut wrench and the locking nut are connected, the locking nut can be easily rotated by holding the handle, and there is no need to use a sledgehammer to strike, thereby reducing the labor intensity of manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure of the locking nut body of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The structure of the locking nut body of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 The structure diagram of the locking nut of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 4 The structure diagram of the locking nut of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 5 The structure diagram of the lower locking nut of the utility model is shown in FIG. Figure 1 ;

[0024] Figure 6 The structure diagram of the lower locking nut of the utility model is shown in FIG. Figure 2 ;

[0025] Figure 7 It is a structural schematic diagram of the disassembly tool of the utility model;

[0026] Figure 8 This is a schematic diagram of the use of the disassembly tool of the utility model;

[0027] Fig. 9 This is a schematic diagram of the installation of the locking nut of the utility model in the hob;

[0028] The numbers in the accompanying drawings are: 11 is a thread, 12 is a mounting hole, 121 is a screw, 13 is a process hole, 2 is an upper locking nut, 21 is a right annular portion, 22 is an upper staggered portion, 3 is a lower locking nut, 31 is a left annular portion, 32 is a lower staggered portion, 4 is a hob, 5 is a ring base, 51 is a handle, 52 is a disassembly hole, and 6 is a pin. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0030] like Figure 1 to Figure 6 As shown, this embodiment provides a half-type quick-disassembly locking nut for a TBM cutter, wherein: Figure 3 to Figure 6 The middle thread 11 is not shown. The split-half quick-release nut comprises a locking nut body, such as Figure 1 , Figure 2 As shown, the nut body is annular, and a thread 11 is provided on the annular inner hole surface of the nut body. The nut body is spliced ​​by an upper locking nut 2 and a lower locking nut 3. The upper and lower locking nuts are made of alloy structural steel material, and have sufficient strength and hardness after heat treatment and tempering to ensure the strength of the thread 11.

[0031] like Figure 3 , Figure 4 As shown, the upper locking nut 2 includes a right annular portion 21 and an upper staggered portion 22 connected to both ends of the right annular portion 21, the right annular portion 21 is located on the right side of the nut body, and the upper staggered portion 22 is located at the top of the nut body; in this embodiment, two process holes 13 are opened on the right annular portion 21, and five mounting holes 12 are opened on the upper staggered portions 22 at both ends of the right annular portion 21.

[0032] like Figure 5 , Figure 6 As shown, the lower locking nut 3 includes a left annular portion 31 and a lower staggered portion 32 connected to both ends of the left annular portion 31, the left annular portion 31 is located on the left side of the nut body, and the lower staggered portion 32 is located at the bottom end of the nut body; in this embodiment, two process holes 13 are opened on the left annular portion 31, and five mounting holes 12 are opened on the lower staggered portions 32 at both ends of the left annular portion 31.

[0033] The left annular portion 31 and the right annular portion 21 are symmetrically arranged on both sides of the staggered portion, and the left annular portion 31 and the right annular portion 21 together constitute an annular portion, and a process hole 13 is arranged on the annular portion, and the depth of the process hole 13 is less than the depth of the mounting hole 12. The upper staggered portion 22 and the lower staggered portion 32 are assembled to form the staggered portion, and the staggered portion and the annular portion have the same thickness, and the upper staggered portion 22 and the lower staggered portion 32 have the same thickness, and a transparent mounting hole 12 is arranged on the staggered portion, and the mounting holes 12 on the upper staggered portion 22 and the lower staggered portion 32 are arranged correspondingly.

[0034] A screw 121 is inserted into the mounting hole 12 . The screw 121 is a hexagon socket countersunk screw. The screw 121 is used to lock the upper and lower locking nuts. After locking, the thread 11 is turned.

[0035] like Figure 7-8As shown, this embodiment provides a disassembly tool for quickly disassembling a half-type locking nut, which is used to disassemble the half-type quick-disassembly locking nut for a TBM cutter, including a locking nut wrench and a pin 6. The locking nut wrench includes an annular base 5, and handles 51 are provided on both sides of the annular base 5. Support ribs are provided between the annular base 5 and the handles 51 to increase the connection strength between the annular base 5 and the handles 51. A plurality of transparent disassembly holes 52 are provided on the plane of the annular base 5, and the pins 6 are inserted into the disassembly holes 52.

[0036] The pin 6 is a metal cylinder, the height of the pin 6 is greater than the height of the annular base 5 , the pin 6 matches the disassembly hole 52 and the process hole 13 , and a plurality of the disassembly holes 52 are evenly arranged on the annular base 5 .

[0037] Fig. 9 It is a schematic diagram of the installation of the locking nut in the hob 4 of the utility model.

[0038] During disassembly, first use an hexagonal wrench to remove the hexagonal countersunk screw 121. At this time, the upper and lower locking nuts are in a separable state. If there is a lot of mud, water or rock debris in the locking nuts, they can be cleaned first, and then the locking nut wrench and the locking nut are placed accordingly, and the pin 6 is inserted into the disassembly hole 52 and the process hole 13. Hold the handle tightly and the locking nut wrench drives the locking nut to rotate. After the upper and lower locking nuts are loosened, the upper locking nut 2 and the lower locking nut 3 are taken out from both sides respectively, and the locking nut can be disassembled to complete the disassembly of the hob 4.

[0039] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A split-half quick-release locking nut for a TBM cutter, characterized in that: It comprises a locking nut body, the nut body is annular, a thread (11) is arranged on the surface of the annular inner hole of the nut body, and the nut body is formed by splicing an upper locking nut (2) and a lower locking nut (3); The upper locking nut (2) comprises a right annular portion (21) and an upper staggered portion (22) connected to both ends of the right annular portion (21), the right annular portion (21) being located on the right side of the nut body, and the upper staggered portion (22) being located on the top of the nut body; The lower locking nut (3) comprises a left annular portion (31) and lower staggered portions (32) connected to both ends of the left annular portion (31), the left annular portion (31) being located on the left side of the nut body, and the lower staggered portion (32) being located at the bottom end of the nut body; The left annular portion (31) and the right annular portion (21) together form an annular portion, a process hole (13) is provided on the annular portion, the upper staggered portion (22) and the lower staggered portion (32) are assembled to form an staggered portion, a transparent mounting hole (12) is provided on the staggered portion, and a screw (121) is inserted into the mounting hole (12).

2. The half-type quick-release locking nut for TBM cutter according to claim 1 is characterized in that: The left annular portion (31) and the right annular portion (21) are symmetrically arranged on both sides of the interlaced portion.

3. The half-type quick-release locking nut for TBM cutter according to claim 1 is characterized in that: The screw (121) is a hexagon socket countersunk screw.

4. The half-type quick-release locking nut for TBM cutter according to claim 1 is characterized in that: The depth of the process hole (13) is smaller than the depth of the mounting hole (12).

5. A disassembly tool for a quick-disassembly half-type locking nut, used for disassembling a quick-disassembly half-type locking nut for a TBM cutter as claimed in any one of claims 1 to 4, characterized in that: The invention comprises a locking nut wrench and a pin (6), wherein the locking nut wrench comprises an annular base (5), handles (51) are arranged on both sides of the annular base (5), and a plurality of disassembly holes (52) are arranged on the plane of the annular base (5), and the pins (6) are inserted into the disassembly holes (52).

6. A quick-disassembly half-type locking nut disassembly tool according to claim 5, characterized in that: The height of the pin (6) is greater than the height of the annular base (5), and the plurality of disassembly holes (52) are evenly arranged on the annular base (5).

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