Fixing structure of shield tunneling machine scraper

Abstract

The utility model relates to the technical field of shield tunneling machines, and discloses a shield tunneling machine scraper fixing structure which comprises a cutter head, a sliding block is connected to the inner wall of the cutter head in a sliding mode, a fixing rod is fixedly installed on the outer wall of the sliding block, and a second spring is fixedly installed on the outer wall of the side, away from the fixing rod, of the sliding block. And the outer wall of the fixing rod is slidably connected with a blade, the outer wall of the blade is fixedly provided with a fixing block, the inner wall of the outer edge of the cutter head is slidably sleeved with a baffle, and the outer wall of the baffle is movably sleeved with a first spring. According to the fixing structure of the shield tunneling machine scraper, the blade is accurately positioned through the limiting block, position deviation is avoided when the blade is installed on the inner wall of the cutter head for fixing, the sliding block is pushed and pulled through external force, the sliding block drives the fixing rod to achieve compression, the fixing rod can be disengaged from the inner wall of the blade, and therefore rapid disassembly is achieved, and the sliding block is loosened through external force; the second spring releases elastic force, so that the fixing rod is inserted into the inner wall of the blade, and quick mounting and fixing are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a fixing structure of a scraper of a shield machine. Background Art

[0002] A shield machine is a tunnel boring machine that uses the shield method. The shield construction method is that the tunnel boring machine builds and lays the tunnel while excavating. The "shield" refers to the supporting segments, which is different from the open construction method. Shield machines can also be used in rock formations, but they are different from open non-shield tunnel boring machines. Tunnel boring machines used in soft soil formations are customarily called shield machines. Shield machines are generally divided into hand-dug shields, extrusion shields, semi-mechanical shields, local air pressure, global air pressure, mechanical shields, open-chest cutting shields, air pressure shields, slurry pressure shields, earth pressure balance shields, mixed shields, and special-shaped shields according to their working principles.

[0003] In the process of fixing the scraper of the existing shield machine, the cutter is mostly fixed to the cutter disc by bolts, which makes it more laborious to rotate the bolts when fixing the cutter during the construction process, reducing the fixing efficiency. At the same time, the top of the scraper mechanism is firmly installed with the shield cutter disc mechanism, and the top of the scraper mechanism is prone to loosening during use, reducing the stability of the equipment. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a fixing structure for a shield machine scraper, which has the advantages of being easy to disassemble and assemble and being stable, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a fixed structure of a shield machine scraper, comprising a cutter disc, the inner wall of the cutter disc is slidably connected with a slider, the outer wall of the slider is fixedly installed with a fixing rod, the outer wall of the slider on a side away from the fixing rod is fixedly installed with a second spring, the outer wall of the fixing rod is slidably connected with a blade, the outer wall of the blade is fixedly installed with a fixing block, the outer edge inner wall of the cutter disc is slidably sleeved with a baffle, the outer wall of the baffle is movably sleeved with a first spring, the bottom of the baffle is fixedly installed with a circular plate, and the bottom of the blade is fixedly installed with a limiting block.

[0006] As a preferred technical solution of the utility model: a square groove is provided on the inner wall of the outer wall of the cutter disc, and the inner wall of the square groove is matched with the outer wall of the sliding block.

[0007] As a preferred technical solution of the present utility model: one end of the second spring is located on the outer wall of the sliding block, and the other end of the second spring is located on the inner wall of the cutter disc.

[0008] As a preferred technical solution of the utility model: the number of the baffles is two, and the two baffles are symmetrically arranged with the fixed block as the center.

[0009] As a preferred technical solution of the utility model: one end of the first spring is fixedly mounted to the top of the circular plate, and the other end of the first spring is fixedly mounted to the inner wall of the cutter disc.

[0010] As a preferred technical solution of the utility model: the outer wall diameter of the fixing rod is larger than the outer wall diameter of the first spring, and the outer edge of the circular plate forms a sliding connection with the inner wall of the cutter disc.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The fixing structure of the scraper of the shield machine uses a limit block to accurately position the blade to avoid position deviation when it is installed on the inner wall of the cutter disc for fixing. The slider is pushed and pulled by external force, and the slider drives the fixing rod to achieve compression, so that the fixing rod can be separated from the inner wall of the blade, thereby achieving rapid disassembly. The slider is released by external force, and the second spring releases the elastic force, so that the fixing rod is inserted into the inner wall of the blade to achieve rapid installation and fixation.

[0013] 2. The fixed structure of the scraper of the shield machine is that when the blade is placed on the inner wall of the cutter disc, the baffle is pulled by external force, and the baffle drives the circular plate to compress the first spring, rotate to the top of the fixed block, and release the baffle, so that the first spring pushes the circular plate to release the elastic force, thereby achieving the baffle and the top of the fixed block to resist each other, thereby improving the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the baffle structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the circular plate structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the limit block of the utility model;

[0018] Figure 5 This is a schematic diagram of the fixing rod structure of the utility model.

[0019] In the figure: 1, cutter disc; 2, blade; 3, slider; 4, fixed block; 5, round plate; 6, first spring; 7, baffle; 8, fixed rod; 9, second spring; 10, limit block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 - Figure 5 A fixed structure of a shield machine scraper comprises a cutter disc 1, a slider 3 is slidably connected to the inner wall of the cutter disc 1, a fixing rod 8 is fixedly installed on the outer wall of the slider 3, a second spring 9 is fixedly installed on the outer wall of the slider 3 away from the fixing rod 8, a blade 2 is slidably connected to the outer wall of the fixing rod 8, a fixing block 4 is fixedly installed on the outer wall of the blade 2, a baffle 7 is slidably sleeved on the inner wall of the outer edge of the cutter disc 1, a first spring 6 is movably sleeved on the outer wall of the baffle 7, a circular plate 5 is fixedly installed on the bottom of the baffle 7, and a limiting block 10 is fixedly installed on the bottom of the blade 2.

[0022] In the above structure, the limit block 10 is fixedly installed at the bottom of the blade 2, and the limit block 10 is used to accurately position the blade 2 to avoid position deviation when it is fixed on the inner wall of the cutter disc 1.

[0023] In a preferred embodiment, a square groove is provided on the inner and outer walls of the cutter head 1 , and the inner wall of the square groove is matched with the outer wall of the sliding block 3 .

[0024] In the above structure, the inner wall of the square groove is adapted to the outer wall of the slider 3, and the slider 3 is pushed and pulled by external force, so that the slider 3 drives the fixing rod 8 to slide on the inner wall, so that the fixing rod 8 limits the cutter disc 1 and increases stability.

[0025] In a preferred embodiment, one end of the second spring 9 is located on the outer wall of the sliding block 3 , and the other end of the second spring 9 is located on the inner wall of the cutter disc 1 .

[0026] In the above structure, the other end of the second spring 9 is located on the inner wall of the blade disc 1, and the slider 3 is pushed and pulled by external force. The slider 3 drives the fixing rod 8 to be compressed, so that the fixing rod 8 can be separated from the inner wall of the blade 2, thereby achieving quick disassembly. The slider 3 is loosened by external force, and the second spring 9 releases the elastic force, so that the fixing rod 8 is inserted into the inner wall of the blade 2, thereby achieving quick installation and fixation.

[0027] In a preferred embodiment, there are two baffles 7 , and the two baffles 7 are symmetrically arranged with the fixing block 4 as the center.

[0028] In the above structure, two baffles 7 are symmetrically arranged with the fixed block 4 as the center, and the fixed block 4 is used to resist the baffle 7, so that the baffle 7 drives the baffle 7 to be stabilized on the inner wall of the cutter disc 1, avoiding the top end of the blade 2 from being installed on the cutter disc 1, and preventing the top end of the blade 2 from loosening during use.

[0029] In a preferred embodiment, one end of the first spring 6 is fixedly mounted on the top of the circular plate 5 , and the other end of the first spring 6 is fixedly mounted on the inner wall of the cutter disc 1 .

[0030] In the above structure, when the blade 2 is placed on the inner wall of the cutter disc 1, the baffle 7 is pulled by external force, and the baffle 7 drives the circular plate 5 to compress the first spring 6, rotate to the top of the fixed block 4, and release the baffle 7, so that the first spring 6 pushes the circular plate 5 to release the elastic force, thereby achieving the baffle 7 and the top of the fixed block 4 to resist each other, thereby improving the stability of the equipment.

[0031] In a preferred embodiment, the outer wall diameter of the fixing rod 8 is larger than the outer wall diameter of the first spring 6 , and the outer edge of the circular plate 5 forms a sliding connection with the inner wall of the cutter head 1 .

[0032] In the above structure, the outer wall diameter of the fixing rod 8 is larger than the outer wall diameter of the first spring 6 , and the baffle 7 is pulled by external force, so that the circular plate 5 fully compresses the first spring 6 to prevent the first spring 6 from derailing from the outer wall of the baffle 7 .

[0033] Working principle: by placing the blade 2 on the inner wall of the cutter disc 1, the limit block 10 is used to accurately position the blade 2 to avoid position deviation when it is installed on the inner wall of the cutter disc 1 for fixing, and the slider 3 is pushed and pulled by external force, and the slider 3 drives the fixing rod 8 to achieve compression, so that the fixing rod 8 can be separated from the inner wall of the blade 2, thereby achieving quick disassembly, and the slider 3 is released by external force, and the second spring 9 releases the elastic force, so that the fixing rod 8 is inserted into the inner wall of the blade 2, so as to achieve quick installation and fixation, so that the fixing rod 8 limits the cutter disc 1 to achieve fixation, and when the blade 2 is placed on the inner wall of the cutter disc 1, the baffle 7 is pulled by external force, and the baffle 7 drives the circular plate 5 to compress the first spring 6, and rotate to the top of the fixed block 4, and the baffle 7 is released, so that the first spring 6 pushes the circular plate 5 to release the elastic force, thereby achieving the baffle 7 and the top of the fixed block 4 to resist each other, thereby improving the stability of the equipment.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shield machine scraper fixing structure, comprising a cutter head (1), characterized in that: The inner wall of the knife disc (1) is slidably connected to a slider (3), the outer wall of the slider (3) is fixedly mounted with a fixing rod (8), the outer wall of the slider (3) away from the fixing rod (8) is fixedly mounted with a second spring (9), the outer wall of the fixing rod (8) is slidably connected to a blade (2), the outer wall of the blade (2) is fixedly mounted with a fixing block (4), the outer edge of the knife disc (1) is slidably sleeved with a baffle (7), the outer wall of the baffle (7) is movably sleeved with a first spring (6), the bottom of the baffle (7) is fixedly mounted with a circular plate (5), and the bottom of the blade (2) is fixedly mounted with a limiting block (10).

2. The fixing structure of a shield machine scraper according to claim 1, characterized in that: The outer wall and the inner wall of the cutter disc (1) are provided with a square groove, and the inner wall of the square groove is matched with the outer wall of the sliding block (3).

3. The fixing structure of a shield machine scraper according to claim 2, characterized in that: One end of the second spring (9) is located on the outer wall of the sliding block (3), and the other end of the second spring (9) is located on the inner wall of the cutter disc (1).

4. The fixing structure of a shield machine scraper according to claim 1, characterized in that: The number of the baffles (7) is two, and the two baffles (7) are symmetrically arranged with the fixed block (4) as the center.

5. The fixing structure of a shield machine scraper according to claim 4 is characterized in that: One end of the first spring (6) is fixedly mounted on the top of the circular plate (5), and the other end of the first spring (6) is fixedly mounted on the inner wall of the cutter disc (1).

6. The fixing structure of a shield machine scraper according to claim 1, characterized in that: The outer wall diameter of the fixing rod (8) is greater than the outer wall diameter of the first spring (6), and the outer edge of the circular plate (5) is slidably connected to the inner wall of the cutter disc (1).

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