Hob changing device of shield tunneling machine and using method of hob changing device

Abstract

The invention relates to the technical field of tunneling construction shield equipment maintenance, and discloses a shield tunneling machine hob replacing device and a using method thereof.The shield tunneling machine hob replacing device comprises a working shell, an electric telescopic rod is fixedly connected to one side of the working shell, and a round shell is fixedly connected to the center of the inner wall of the working shell; the movable end of the electric telescopic rod penetrates through the working shell and extends into the round shell, four strip-shaped holes are formed in the periphery of the outer wall of the round shell, the electric telescopic rod is started, the electric telescopic rod drives the round block to move, the round block slides in the round shell, the round block drives the rotating rod to move, and the rotating rod is limited by the round rod; the rotating rod drives the sliding block to slide along the outer wall of the round rod, the sliding block drives the connecting plate to move, the connecting plate drives the annular block to move, the annular block drives the cutter handle to move, the cutter handle drives the hobbing cutter to move, through the limiting hole formed in the working shell, the hobbing cutter moves towards the outside of the working shell through the limiting hole, and therefore cutter changing work is conducted.

Description

Technical Field

[0001] The invention relates to the technical field of shield equipment maintenance in tunnel excavation construction, and in particular to a shield machine cutter changing device and a use method thereof. Background Art

[0002] Disc cutters are components that come into direct contact with the geology in front of them during the construction process of tunnel boring machines. Their performance determines the efficiency of the construction. Since the working environment of the cutters is extremely harsh, the cutters are very easy to wear out during the construction process. In all current designs, only one cutter is installed on each cutter holder, so it is necessary to stop the machine for replacement according to the wear of individual cutters, which wastes a lot of time and reduces the construction efficiency.

[0003] In the prior art, when a blade is damaged, the operation needs to be stopped and a new blade needs to be manually replaced inside the device. In this process, not only is the operation cumbersome, but it also delays the efficiency of tunnel excavation and increases the cost of construction. Summary of the invention

[0004] The object of the present invention is to provide a shield machine cutter changing device and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention relates to a shield machine cutter changing device and a method of using the same, comprising a working shell, one side of the working shell is fixedly connected to an electric telescopic rod, a round shell is fixedly connected to the center of the inner wall of the working shell, the movable end of the electric telescopic rod passes through the working shell and extends to the inside of the round shell, four strip holes are respectively opened around the outer wall of the round shell, eight limit holes are respectively opened around the outer wall of the working shell, and also comprises a cutter changing mechanism, the cutter changing mechanism comprises a round block fixedly connected to the movable end of the electric telescopic rod, a plurality of rotating rods are rotatably connected around the round block, eight rotating rods are arranged, eight round rods are fixedly connected around the inner wall of the working shell, one end of the rotating rod away from the round block is rotatably connected to a slider, the inner wall of the slider is slidably connected to the outer wall of one end of the round rod, and a cutter changing assembly is arranged on the side wall of the slider.

[0007] Furthermore, the tool changing assembly includes a connecting plate fixedly connected to the top and bottom of the slider, one end of the connecting plate is fixedly connected to an annular block, the inner wall of the annular block is fixedly connected to a tool handle, one end of the tool handle is fixedly connected to a roller, and the outer wall of one end of the roller is slidably connected to the inner wall of the limiting hole.

[0008] Furthermore, a scraping assembly is provided on the side wall of the working shell, and the scraping assembly includes four cross bars fixedly connected to one side of the inner wall of the working shell, and the outer walls at both ends of the cross bars are respectively fixedly connected to fixed blocks, and the two sides of one end of the fixed block are respectively fixedly connected to special-shaped shells.

[0009] Furthermore, a spring is fixedly connected to one side of the inner wall of the special-shaped shell, one end of the spring is fixedly connected to a scraper plate, the outer wall of the scraper plate is slidably connected to the inner wall of the special-shaped shell, and a square hole is opened on one side of the outer wall of the special-shaped shell.

[0010] Furthermore, a locking assembly is provided on the outer wall of the round rod, which includes a first moving block slidably connected to the outer wall of the round rod near one end of the slider, a return spring is fixedly connected to one side of the first moving block, and one end of the return spring is fixedly connected to one side of the inner wall of the working shell.

[0011] Furthermore, one end of the first moving block is rotatably connected to a rotating bar, and the end of the rotating bar away from the first moving block is rotatably connected to the second moving block. A plurality of sliding grooves are respectively provided around the inner wall of the working shell, and there are eight sliding grooves. The outer wall of one end of the second moving block is slidably connected to the inner wall of the sliding groove.

[0012] Furthermore, the top and bottom of the second movable block are respectively fixedly connected with square rods, and the side wall of one end of the square rod is fixedly connected with a special-shaped clamping plate. Both ends of one side of the annular block are respectively provided with clamping grooves, and the outer wall of one end of the special-shaped clamping plate is slidably connected to the inner wall of the clamping groove.

[0013] Furthermore, an auxiliary component is provided on the outer wall of the annular block, and the auxiliary component includes a vertical rod fixedly connected to the top and bottom of the annular block, and a conical sliding frame is slidably connected to one side of the inner wall of the special-shaped shell.

[0014] Furthermore, one end of the conical sliding frame is fixedly connected to the horizontal plate, one end side wall of the vertical rod is contacted and arranged on one side of the horizontal plate, and one end outer wall of the conical sliding frame is arranged inside the square hole.

[0015] A method for using a shield machine cutter changing device comprises the following steps:

[0016] Step 1: Change the first set of tools;

[0017] Step 2: Blade protection;

[0018] Step 3: Stabilize the blade;

[0019] Step 4: Auxiliary stability.

[0020] The present invention has the following beneficial effects:

[0021] (1) In the present invention, the electric telescopic rod is started, and the electric telescopic rod drives the round block to move. The round block slides inside the round shell, and the round block drives the rotating rod to move. The rotating rod is limited by the round rod, and the sliding block drives the sliding block to slide along the outer wall of the round rod. The sliding block drives the connecting plate to move, and the connecting plate drives the annular block to move. The annular block drives the knife handle to move, and the knife handle drives the roller to move. The roller moves to the outside of the working shell through the limiting hole provided at the working shell, thereby performing the tool changing work. At the same time, the round block drives the rotating rod at another location to move in the opposite direction, and the rotating rod drives the sliding block to move along the outer wall of the round rod toward the round shell, so that the sliding block drives the roller in the tool changing assembly to approach the round shell. The four rollers of the device form a group of blades, so that a group of rollers can be recycled to prevent the recycled rollers from continuing to perform construction operations, thereby improving the protection effect of the device on the rollers.

[0022] (2) In the present invention, the spring inside the special-shaped shell is elastically deformed, and the spring drives the scraper plate to move. At this time, the two adjacent scraper plates approach each other. When the roller cuts outward, the outer wall of the roller will contact the side walls of the two scraper plates. The setting of the scraper plate can slightly rub the outer wall of the roller, slightly improving the excavation efficiency of the roller in the tunnel. At the same time, when another group of rollers are recovered, the rollers will contact the side walls of the two scraper plates, thereby scraping off the soil attached to the roller during the excavation work, preventing the soil from entering the interior of the working shell, and the side surface improves the protection effect of the device. In addition, due to the setting of the limiting hole, the soil attached to the roller is further scraped off, thereby improving the protection effect of the device.

[0023] (3) In the present invention, when the annular block moves away from the circular shell, the annular block drives the vertical rod to move. During the movement of the vertical rod, the vertical rod will come into contact with the side wall of the horizontal plate to squeeze the horizontal plate. The horizontal plate drives the conical sliding frame to move. During the movement of the conical sliding frame, the conical sliding frame moves toward the inside of the special-shaped shell. During the movement of the conical sliding frame toward the inside of the special-shaped shell, the side wall of the scraper plate is squeezed, so that the two scraper plates are further approached to each other, which can not only improve the scraping work of the soil adhered to the outer wall of the roller cutter, but also clamp the two sides of one end of the roller cutter to prevent the roller cutter from shaking when the roller cutter is excavating the tunnel, thereby improving the stability of the roller cutter.

[0024] (4) In the present invention, when the slider moves toward the inner wall of the working shell, the slider will contact one side of the first moving block, squeezing the first moving block, so that the first moving block drives the rotating bar to move. Limited by the slide groove, the rotating bar drives the second moving block to slide along the inner wall of the slide groove, and the second moving block drives the square rod to move. The square rod drives the special-shaped clamping plate to move. Affected by the clamping groove provided at the annular block, the special-shaped clamping plate will enter the interior of the clamping groove during the movement, thereby firmly locking the annular block, preventing the roller cutter indirectly driven by the annular block from twisting during operation, and further improving the stability of the roller cutter excavation work.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of the cross-sectional structure of the working shell of the present invention;

[0028] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the top view of the cross bar structure of the present invention;

[0030] Figure 4 It is a schematic diagram of the internal side structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of the hob of the present invention;

[0032] Figure 6 It is a schematic diagram of the side structure of the annular block of the present invention;

[0033] Figure 7 It is a schematic diagram of the cross-sectional structure of the special-shaped shell of the present invention;

[0034] Figure 8 For the present invention Figure 2 A magnified view of middle;

[0035] Fig. 9 For the present invention Figure 3 Enlarged view of middle B;

[0036] Fig.10 The figure is a flow chart of the method for using the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] In the figure: 1, working shell; 2, electric telescopic rod; 3, round shell; 4, strip hole; 5, limit hole; 6, hob tool changing mechanism; 61, round block; 62, rotating rod; 63, round rod; 64, slider; 65, tool changing assembly; 66, scraping assembly; 67, clamping assembly; 68, auxiliary assembly; 651, connecting plate; 652, annular block; 653, knife handle; 654, hob; 661, cross bar; 662, fixed block; 663, special-shaped shell; 664, spring; 665, scraping plate; 666, square hole; 671, first moving block; 672, return spring; 673, rotating bar; 674, second moving block; 675, slide groove; 676, square rod; 677, special-shaped clamping plate; 678, clamping groove; 681, vertical rod; 682, conical sliding frame; 683, cross plate. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1, please refer to Figure 1 - Fig.10 As shown, the present invention is a shield machine cutter changing device and a method for using the same, comprising a working shell 1, one side of the working shell 1 is fixedly connected to an electric telescopic rod 2, the center of the inner wall of the working shell 1 is fixedly connected to a round shell 3, the movable end of the electric telescopic rod 2 penetrates the working shell 1 and extends to the inside of the round shell 3, the outer wall of the round shell 3 is respectively provided with four strip holes 4, the outer wall of the working shell 1 is respectively provided with eight limit holes 5, and further comprising;

[0041] The roller cutter tool changing mechanism 6 includes a round block 61 fixedly connected to the movable end of the electric telescopic rod 2, and a plurality of rotating rods 62 are rotatably connected to the four sides of the round block 61. There are eight rotating rods 62, and eight round rods 63 are fixedly connected to the inner wall of the working shell 1. One end of the rotating rod 62 away from the round block 61 is rotatably connected to a slider 64. The inner wall of the slider 64 is slidably connected to the outer wall of one end of the round rod 63, and the side wall of the slider 64 is provided with a tool changing assembly 65.

[0042] The tool changing assembly 65 includes a connecting plate 651 fixedly connected to the top and bottom of the slider 64, one end of the connecting plate 651 is fixedly connected to a ring block 652, the inner wall of the ring block 652 is fixedly connected to a knife handle 653, one end of the knife handle 653 is fixedly connected to a roller cutter 654, the electric telescopic rod 2 is started, the electric telescopic rod 2 drives the round block 61 to move, the round block 61 slides inside the round shell 3, the round block 61 drives the rotating rod 62 to move, limited by the round rod 63, the rotating rod 62 drives the slider 64 to slide along the outer wall of the round rod 63, the slider 64 drives the connecting plate 651 to move, the connecting plate 651 drives the ring block 652 to move, the ring block 652 drives the knife handle 653 to move, The knife handle 653 drives the roller cutter 654 to move, and the roller cutter 654 moves to the outside of the working shell 1 through the limiting hole 5 opened at the working shell 1, so as to change the knife. The outer wall of one end of the roller cutter 654 is slidably connected to the inner wall of the limiting hole 5, and the round block 61 drives the rotating rod 62 at another place to move in the opposite direction. The rotating rod 62 drives the slider 64 to move along the outer wall of the round rod 63 toward the circular shell 3, so that the slider 64 will drive the roller cutter 654 in the knife changing assembly 65 to approach the circular shell 3. The four roller cutters 654 of the device form a group of blades, so as to recycle a group of roller cutters 654, prevent the recycled roller cutters 654 from continuing to perform construction operations, and improve the protection effect of the device on the roller cutters 654.

[0043] In embodiment 2, a scraping assembly 66 is provided on the side wall of the working shell 1. The scraping assembly 66 includes four cross bars 661 fixedly connected to one side of the inner wall of the working shell 1. The outer walls at both ends of the cross bars 661 are respectively fixedly connected to fixed blocks 662. The two sides of one end of the fixed block 662 are respectively fixedly connected to special-shaped shells 663.

[0044] A spring 664 is fixedly connected to one side of the inner wall of the special-shaped shell 663, and a scraper plate 665 is fixedly connected to one end of the spring 664. The outer wall of the scraper plate 665 is slidably connected to the inner wall of the special-shaped shell 663, and a square hole 666 is opened on one side of the outer wall of the special-shaped shell 663.

[0045] A locking assembly 67 is provided on the outer wall of the round rod 63, and the locking assembly 67 includes a first moving block 671 slidably connected to the outer wall of one end of the round rod 63 close to the slider 64, and a return spring 672 is fixedly connected to one side of the first moving block 671, and one end of the return spring 672 is fixedly connected to one side of the inner wall of the working shell 1.

[0046] One end of the first moving block 671 is rotatably connected to a rotating bar 673, and one end of the rotating bar 673 away from the first moving block 671 is rotatably connected to a second moving block 674. A plurality of sliding grooves 675 are respectively provided around the inner wall of the working shell 1, and there are eight sliding grooves 675. The outer wall of one end of the second moving block 674 is slidably connected to the inner wall of the sliding groove 675.

[0047] The top and bottom of the second moving block 674 are respectively fixedly connected with a square rod 676, and one end side wall of the square rod 676 is fixedly connected with a special-shaped clamping plate 677. A clamping groove 678 is respectively provided at both ends of one side of the annular block 652. The outer wall of one end of the special-shaped clamping plate 677 is slidably connected to the inner wall of the clamping groove 678. When the slider 64 moves toward the inner wall of the working shell 1, the slider 64 moves and contacts with one side of the first moving block 671, squeezing the first moving block 671 so that the first moving block 671 drives the rotating bar 673 to move, and the sliding groove 678 is driven by the first moving block 671 to move. 75, the rotating bar 673 drives the second moving block 674 to slide along the inner wall of the slide groove 675, the second moving block 674 drives the square rod 676 to move, the square rod 676 drives the special-shaped clamping plate 677 to move, and the clamping groove 678 opened at the annular block 652, the special-shaped clamping plate 677 will enter the interior of the clamping groove 678 during the movement, thereby firmly clamping the annular block 652, preventing the roller 654 indirectly driven by the annular block 652 from twisting during operation, and further improving the stability of the excavation work of the roller 654.

[0048] The outer wall of the annular block 652 is provided with an auxiliary component 68 , which includes a vertical rod 681 fixedly connected to the top and bottom of the annular block 652 , and a conical sliding frame 682 is slidably connected to one side of the inner wall of the special-shaped shell 663 .

[0049] One end of the conical sliding frame 682 is fixedly connected to the horizontal plate 683, and the side wall of one end of the vertical rod 681 is contacted with one side of the horizontal plate 683. The outer wall of one end of the conical sliding frame 682 is set inside the square hole 666. When the annular block 652 moves away from the round shell 3, the annular block 652 drives the vertical rod 681 to move. During the movement of the vertical rod 681, it will contact the side wall of the horizontal plate 683 to squeeze the horizontal plate 683, and the horizontal plate 683 drives the conical sliding frame 682 to move. During the movement of 682, it moves toward the inside of the special-shaped shell 663. During the movement of the conical sliding frame 682 toward the inside of the special-shaped shell 663, the side wall of the scraper plate 665 is squeezed, so that the two scraper plates 665 are further approached to each other, which can not only improve the scraping work of the mud adhering to the outer wall of the roller 654, but also clamp the two sides of one end of the roller 654 to prevent the roller 654 from shaking when the roller 654 is digging the tunnel, thereby improving the working stability of the roller 654.

[0050] A method for using a shield machine cutter changing device comprises the following steps:

[0051] Step 1: Change the first set of tools;

[0052] Step 2: Blade protection;

[0053] Step 3: Stabilize the blade;

[0054] Step 4: Auxiliary stability.

[0055] When in use, the electric telescopic rod 2 is started, the electric telescopic rod 2 drives the round block 61 to move, the round block 61 slides inside the round shell 3, the round block 61 drives the rotating rod 62 to move, and is limited by the round rod 63. The rotating rod 62 drives the slider 64 to slide along the outer wall of the round rod 63, the slider 64 drives the connecting plate 651 to move, the connecting plate 651 drives the annular block 652 to move, the annular block 652 drives the knife handle 653 to move, the knife handle 653 drives the hob 654 to move, through the limiting hole 5 opened at the working shell 1, The cutter roller 654 moves to the outside of the working shell 1 through the limiting hole 5 to perform the tool changing operation. At the same time, the round block 61 drives the rotating rod 62 at another location to move in the opposite direction. The rotating rod 62 drives the slider 64 to move along the outer wall of the round rod 63 toward the circular shell 3, so that the slider 64 drives the cutter roller 654 in the tool changing assembly 65 to approach the circular shell 3. The four cutters rollers 654 of the device form a group of blades, so that a group of cutters rollers 654 can be recycled to prevent the recycled cutters rollers 654 from continuing to perform construction operations, thereby improving the protection effect of the device on the cutters rollers 654.

[0056] Due to the elastic deformation of the spring 664 inside the special-shaped shell 663, the spring 664 drives the scraper plate 665 to move. At this time, the two adjacent scraper plates 665 approach each other. When the roller 654 cuts outward, the outer wall of the roller 654 will contact the side walls of the two scraper plates 665. The setting of the scraper plate 665 can slightly rub the outer wall of the roller 654, slightly improving the tunnel excavation efficiency of the roller 654. At the same time, when another group of rollers 654 are recovered, the roller 654 will contact the side walls of the two scraper plates 665, thereby scraping off the soil attached to the roller 654 during excavation work, preventing the soil from entering the interior of the working shell 1, and the side surface improves the protection effect of the device. In addition, due to the setting of the limiting hole 5, the soil attached to the roller 654 is further scraped off, thereby improving the protection effect of the device.

[0057] When the annular block 652 moves away from the circular shell 3, the annular block 652 drives the vertical rod 681 to move. During the movement of the vertical rod 681, it will contact the side wall of the horizontal plate 683 to squeeze the horizontal plate 683. The horizontal plate 683 drives the conical sliding frame 682 to move. During the movement of the conical sliding frame 682, it moves toward the inside of the special-shaped shell 663. During the movement of the conical sliding frame 682 toward the inside of the special-shaped shell 663, it will squeeze the side wall of the scraping plate 665, so that the two scraping plates 665 are further approached to each other, which can not only improve the scraping work of the soil adhered to the outer wall of the roller 654, but also can clamp both sides of one end of the roller 654 to prevent the roller 654 from shaking when the roller 654 is digging the tunnel, thereby improving the working stability of the roller 654.

[0058] When the slider 64 moves toward the inner wall of the working shell 1, the slider 64 will contact one side of the first moving block 671, squeezing the first moving block 671 so that the first moving block 671 drives the rotating bar 673 to move. Limited by the slide groove 675, the rotating bar 673 drives the second moving block 674 to slide along the inner wall of the slide groove 675, and the second moving block 674 drives the square rod 676 to move. The square rod 676 drives the special-shaped clamping plate 677 to move. The special-shaped clamping plate 677 is affected by the clamping groove 678 provided at the annular block 652. The special-shaped clamping plate 677 enters the interior of the clamping groove 678 during its movement, thereby firmly locking the annular block 652 to prevent the roller 654 indirectly driven by the annular block 652 from twisting during operation, thereby further improving the stability of the excavation work of the roller 654.

[0059] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A shield machine cutter changing device, characterized in that: The invention comprises a working shell (1), one side of the working shell (1) is fixedly connected to an electric telescopic rod (2), the center of the inner wall of the working shell (1) is fixedly connected to a round shell (3), the movable end of the electric telescopic rod (2) passes through the working shell (1) and extends to the inside of the round shell (3), the outer wall of the round shell (3) is respectively provided with four strip holes (4), the outer wall of the working shell (1) is respectively provided with eight limit holes (5), and further comprises: A roller cutter changing mechanism (6), the roller cutter changing mechanism (6) comprising a round block (61) fixedly connected to the movable end of the electric telescopic rod (2), a plurality of rotating rods (62) being rotatably connected around the round block (61), eight rotating rods (62) being provided, eight round rods (63) being fixedly connected around the inner wall of the working shell (1), one end of the rotating rod (62) away from the round block (61) being rotatably connected to a slider (64), the inner wall of the slider (64) being slidably connected to the outer wall of one end of the round rod (63), and a tool changing assembly (65) being provided on the side wall of the slider (64).

2. A shield machine cutter changing device according to claim 1, characterized in that: The tool changing assembly (65) comprises a connecting plate (651) fixedly connected to the top and bottom of the slider (64); one end of the connecting plate (651) is fixedly connected to an annular block (652); the inner wall of the annular block (652) is fixedly connected to a tool handle (653); one end of the tool handle (653) is fixedly connected to a roller (654); and the outer wall of one end of the roller (654) is slidably connected to the inner wall of the limiting hole (5).

3. A shield machine cutter changing device according to claim 2, characterized in that: The side wall of the working shell (1) is provided with a scraping assembly (66), and the scraping assembly (66) comprises four cross bars (661) fixedly connected to the inner wall of the working shell (1) on one side, and the outer walls at both ends of the cross bars (661) are respectively fixedly connected to fixed blocks (662), and the two sides of one end of the fixed block (662) are respectively fixedly connected to special-shaped shells (663).

4. A shield machine cutter changing device according to claim 3, characterized in that: A spring (664) is fixedly connected to one side of the inner wall of the special-shaped shell (663); one end of the spring (664) is fixedly connected to a scraper plate (665); the outer wall of the scraper plate (665) is slidably connected to the inner wall of the special-shaped shell (663); and a square hole (666) is opened on one side of the outer wall of the special-shaped shell (663).

5. A shield machine cutter changing device according to claim 4, characterized in that: The outer wall of the round rod (63) is provided with a locking assembly (67), and the locking assembly (67) comprises a first moving block (671) slidably connected to the outer wall of one end of the round rod (63) close to the slider (64), and a return spring (672) is fixedly connected to one side of the first moving block (671), and one end of the return spring (672) is fixedly connected to one side of the inner wall of the working shell (1).

6. A shield machine cutter changing device according to claim 5, characterized in that: One end of the first moving block (671) is rotatably connected to a rotating bar (673), and one end of the rotating bar (673) away from the first moving block (671) is rotatably connected to a second moving block (674). A plurality of sliding grooves (675) are respectively provided around the inner wall of the working shell (1), and there are eight sliding grooves (675). The outer wall of one end of the second moving block (674) is slidably connected to the inner wall of the sliding groove (675).

7. A shield machine cutter changing device according to claim 6, characterized in that: The top and bottom of the second movable block (674) are respectively fixedly connected with a square rod (676), and one end side wall of the square rod (676) is fixedly connected with a special-shaped clamping plate (677). One end of one side of the annular block (652) is respectively provided with a clamping groove (678), and the outer wall of one end of the special-shaped clamping plate (677) is slidably connected to the inner wall of the clamping groove (678).

8. A shield machine cutter changing device according to claim 7, characterized in that: The outer wall of the annular block (652) is provided with an auxiliary component (68), and the auxiliary component (68) includes a vertical rod (681) fixedly connected to the top and bottom of the annular block (652), and a conical sliding frame (682) is slidably connected to one side of the inner wall of the special-shaped shell (663).

9. A shield machine cutter changing device according to claim 8, characterized in that: One end of the conical sliding frame (682) is fixedly connected to a horizontal plate (683), one end of the side wall of the vertical rod (681) is contacted with one side of the horizontal plate (683), and one end of the outer wall of the conical sliding frame (682) is arranged inside the square hole (666).

10. A method for using a shield machine cutter changing device, using the shield machine cutter changing device as claimed in claim 9, characterized in that: The following steps are included: Step 1: Change the first set of tools; Step 2: Blade protection; Step 3: Stabilize the blade; Step 4: Auxiliary stability.

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