Shield tunneling machine cutterhead convenient to maintain

Abstract

The utility model relates to the technical field of shield tunneling equipment, in particular to a shield tunneling machine cutterhead convenient to maintain. The device comprises a large circular ring, a middle seat, a first mounting seat and a second mounting seat, the middle seat corresponds to the operation hole of the large circular ring in position and is provided with an operation assembly; the first mounting bases are connected to the disc face of the large circular ring and connected with the middle base, the number of the first mounting bases is at least two, the first mounting bases are arranged in the circumferential direction of the large circular ring at intervals, and first clamping assemblies are arranged on the first mounting bases; the second mounting bases are partially and movably inserted into the middle base and located between every two adjacent second mounting bases, second clamping assemblies matched with the first clamping assemblies are arranged on the second mounting bases, and the second mounting bases are in transmission fit with the operation assembly so as to be driven by the operation assembly to slide on the middle base in the radial direction of the large circular ring; and rock breaking knives are respectively mounted on the first mounting seat and the second mounting seat. The device has the advantages of being convenient to maintain, time-saving and labor-saving in maintenance.

Description

Technical Field

[0001] This application relates to the technical field of shield equipment, and particularly to a cutter head of a shield machine that is convenient for maintenance. Background Art

[0002] As the most advanced large-scale equipment in current underground engineering construction, TBM integrates multiple processes such as tunneling, mucking, and support, and can achieve one-time forming of tunnel construction, with advantages such as high efficiency, safety, and high economic benefits. The application of TBM in the construction of tunnels in fields such as railways, water conservancy, hydropower, subways, and mines in China is also becoming more and more extensive. The cutter head is an important component of TBM.

[0003] During the tunnel boring construction process, after the large ring of the shield machine cutter head and the wear-resistant alloy steel plate on the soil-facing side are worn until the base material is damaged, the existing large ring repair technology is to cut off all the worn parts and then reprocess them according to the original design structure size, which is time-consuming and laborious. Utility Model Content

[0004] This application provides a cutter head of a shield machine that is convenient for maintenance. By setting a detachable mounting seat on the large ring and arranging the rock-breaking cutter on the mounting seat, the large ring is isolated by the mounting seat. When wear occurs, only the mounting seat needs to be replaced, thus avoiding the cutting work to solve the problem of time-consuming and laborious existing large ring repair methods.

[0005] This application is realized through the following technical solutions:

[0006] A cutter head of a shield machine that is convenient for maintenance, comprising:

[0007] A large ring;

[0008] An intermediate seat, the intermediate seat corresponding to the operation hole position of the large ring, and the intermediate seat is provided with an operation component;

[0009] A first mounting seat, the first mounting seat being connected to the disk surface of the large ring and connected to the intermediate seat, the number of the first mounting seats being configured to be at least two and arranged at intervals along the circumferential direction of the large ring, and the first mounting seat is provided with a first clamping component;

[0010] A second mounting seat, the second mounting seat being partially inserted into the intermediate seat movably and located between two adjacent second mounting seats, the second mounting seat is provided with a second clamping component that cooperates with the first clamping component, and the second mounting seat is in transmission cooperation with the operation component to slide along the radial direction of the large ring on the intermediate seat under the drive of the operation component;

[0011] Wherein, rock-breaking cutters are respectively installed on the first mounting seat and the second mounting seat.

[0012] In some alternative embodiments, the operating component is detachably drivingly engaged with the second mounting seat.

[0013] In some alternative embodiments, the operating component includes:

[0014] a gear located inside the intermediate seat and rotatably connected to the intermediate seat;

[0015] a transmission rod coaxially connected to the gear so that the transmission rod can drive the gear to rotate about its own axis on the intermediate seat;

[0016] a turntable connected to the transmission rod and located outside the large ring, and a first locking hole is formed on the turntable;

[0017] a locking bolt passing through the first locking hole;

[0018] Wherein, a second locking hole is formed on the intermediate seat, the locking bolt passes through the second locking hole, and the locking bolt is in threaded engagement with the first locking hole and / or the second locking hole; a rack meshing with the gear is provided at the part of the second mounting seat inserted into the turntable.

[0019] In some alternative embodiments, the numbers of the first mounting seat and the second mounting seat are respectively configured to be four, the first mounting seats are evenly distributed along the circumference of the large ring, and the second mounting seats are evenly distributed along the circumference of the large ring.

[0020] In some alternative embodiments, a limiting component is provided on the large ring, and the limiting component is snap-connected to the second mounting seat.

[0021] In some alternative embodiments, the limiting component includes:

[0022] a plug rod movably passing through the large ring;

[0023] a limiting ring coaxially connected to the plug rod;

[0024] a first elastic member connected to the plug rod;

[0025] Wherein, a limiting groove is formed inside the large ring, the first elastic member is connected to the groove wall at one end in the length direction of the limiting groove, and the limiting ring abuts against the groove wall at the other end in the length direction of the limiting groove under the action of the first elastic member; a jack for the plug rod to be inserted is formed on the second mounting seat.

[0026] In some alternative embodiments, the first snap-connection component includes:

[0027] A fixing block, which is connected to the first connecting seat. A chute, a guide groove and a slot for inserting the second clamping component are formed in the fixing block, and the chute is communicated with the slot;

[0028] A sliding block, which is located in the chute, and a first clamping portion is formed on the sliding block;

[0029] A second elastic member, which is connected to the sliding block and the groove wall of the chute so that the sliding block is located / partially located in the slot;

[0030] A guide rod, which is connected to the sliding block and penetrates through the guide groove. The guide rod can slide in the guide groove to drive the sliding block to retract from the slot to the chute;

[0031] Wherein, a second clamping portion capable of engaging with the first clamping portion is formed on the second clamping component.

[0032] In some alternative embodiments, both the first clamping portion and the second clamping portion are configured as wedges.

[0033] In some alternative embodiments, a first positioning portion is provided on the first mounting seat, and a second positioning portion capable of magnetically attracting the first positioning portion is provided on the second mounting seat.

[0034] In some alternative embodiments, wear-resistant strips are installed on the radial outer side of the large ring.

[0035] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0036] A shield machine cutter head provided by the present application uses the first mounting seat and the second mounting seat as carriers of the rock-breaking cutter. During the tunneling process, the large ring is isolated by the first mounting seat and the second mounting seat, and it is not easy to generate mutual wear with the wear-resistant alloy steel plate on the soil-facing side, thus avoiding the large ring cutting work in the existing maintenance method; when the second mounting seat is worn, by releasing the clamping of the first clamping component and the second clamping component and driving the second mounting seat to slide radially through the operating component, the convenient removal of the second mounting seat can be realized, and the maintenance is convenient, time-saving and labor-saving. Description of the Drawings

[0037] The drawings described herein are used to provide a further understanding of the embodiments of the present application, and constitute a part of the present application, but do not limit the embodiments of the present application. In the drawings:

[0038] Figure 1 It is a schematic structural diagram of a shield machine cutter head provided by an embodiment of the present application for easy maintenance;

[0039] Figure 2Schematic diagram of the large ring structure provided by the embodiment of the present application;

[0040] Figure 3 Schematic diagram of the structure of the second mounting seat provided by the embodiment of the present application;

[0041] Figure 4 Schematic diagram of the assembly structure of the first mounting seat and the intermediate seat provided by the embodiment of the present application;

[0042] Figure 5 is Figure 2 Enlarged schematic diagram of the structure at position A in

[0043] Figure 6 is Figure 4 Enlarged schematic diagram of the structure at position B in

[0044] Figure 7 is Figure 4 Enlarged schematic diagram of the structure at position C in

[0045] Marks in the drawings and corresponding component names:

[0046] 1 - large ring; 11 - operation hole; 12 - wear-resistant strip; 13 - insertion rod; 14 - limiting groove; 15 - limiting ring; 16 - first elastic member; 2 - first mounting seat; 21 - fixing block; 22 - slot; 23 - slider; 24 - sliding groove; 25 - second elastic member; 26 - guide rod; 27 - guide groove; 28 - upper connecting block; 29 - positioning hole; 3 - second mounting seat; 31 - main bracket; 32 - side bracket; 33 - rack; 34 - jack; 35 - lower connecting block; 36 - positioning post; 37 - connecting rod; 38 - second clamping portion; 4 - intermediate seat; 41 - mounting groove; 42 - rotating groove; 43 - gear; 44 - transmission rod; 45 - turntable; 46 - second locking hole; 47 - locking bolt; 5 - rock-breaking tool. Detailed implementation manners

[0047] To make the purpose, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below in conjunction with embodiments and drawings. The illustrative embodiments of the present application and their descriptions are only used to explain the present application and are not intended to limit the present application.

[0048] As Figures 1 to 7 shown, the embodiment of the present application provides a shield machine cutter head that is convenient for maintenance. The shield machine cutter head that is convenient for maintenance includes a large ring 1, an intermediate seat 4, a first mounting seat 2 and a second mounting seat 3.

[0049] The inner hole of the large ring 1 serves as the operation hole 11. That is, if one plate surface of the large ring 1 is used as the working surface, the staff can perform necessary maintenance operations on other structures on the working surface of the large ring 1 through the operation hole 11 at the other plate surface of the large ring 1.

[0050] The middle seat 4 corresponds to the operation hole 11 of the large ring 1. That is to say, the staff can perform necessary maintenance work on the middle seat 4 through the operation hole 11. For example, if the middle seat 4 is on the working surface side of the large ring 1, the staff can perform necessary maintenance work on the middle seat 4 through the operation hole 11 on the other side of the large ring 1; the middle seat 4 is provided with an operation component, and the operation component can be located in the operation hole 11 or correspond to the position of the operation hole 11, so that the staff can operate the operation component from the operation hole 11. Of course, in other embodiments, the operation component can be operated by an automated device. That is to say, the operation component can be located at any position on the middle seat 4, that is, the operation component may not be located in the operation hole 11 or not correspond to the position of the operation hole 11.

[0051] The first mounting seat 2 is connected to the disk surface of the large ring 1 and connected to the middle seat 4. Specifically, the first mounting seat 2 can be installed on the working surface of the large ring 1, and the middle seat 4 is connected to the large ring 1 through the first mounting seat 2. The middle seat 4 can be in a relatively fixed state with the large ring 1. The number of the first mounting seats 2 is configured to be at least two and arranged at intervals along the circumference of the large ring 1. The first mounting seat 2 is provided with a first clamping component.

[0052] The second mounting seat 3 is partially inserted into the middle seat 4 movably and is located between two adjacent second mounting seats 3. The second mounting seat 3 is provided with a second clamping component that cooperates with the first clamping component. That is to say, the first clamping component can form a clamping relationship with the second clamping component. The second mounting seat 3 is in transmission cooperation with the operation component to slide radially along the large ring 1 on the middle seat 4 under the drive of the operation component.

[0053] Among them, rock-breaking knives 5 are respectively installed on the first mounting base 2 and the second mounting base 3. According to needs, the number of rock-breaking knives 5 on the first mounting base 2 and the second mounting base 3 can be respectively configured as one or more. The rock-breaking knives 5 on the first mounting base 2 and the second mounting base 3 are flush with each other in the axial direction of the large ring 1, so as to ensure that all the rock-breaking knives 5 can perform the rock-breaking function. In some embodiments, the first mounting base 2 and the second mounting base 3 have the same height in the axial direction of the large ring 1, so that when the rock-breaking knives 5 are installed on the first mounting base 2 and the second mounting base 3 in the same installation manner, it can be ensured that all the rock-breaking knives 5 have the same height in the axial direction of the large ring 1. In other embodiments, the first mounting base 2 and the second mounting base 3 do not have to have the same height in the axial direction of the large ring 1. Instead, different rock-breaking knife bases in the axial direction of the large ring 1 can be provided on the first mounting base 2 and the second mounting base 3. The rock-breaking knives 5 can be respectively connected to the first mounting base 2 and the second mounting base 3 through the rock-breaking knife bases to ensure that all the rock-breaking knives 5 are at the same height in the axial direction of the large ring 1, that is, it means that the height of the rock-breaking knives 5 in the axial direction of the large ring 1 can be controlled by controlling the installation height of the rock-breaking knives 5. In actual implementation, the height of the first mounting base 2 in the axial direction of the large ring 1 is lower than that of the second mounting base 3, so that the second mounting base 3 wears out earlier than the first mounting base 2.

[0054] In the embodiments of the present application, partial movable insertion means that a partial structure of the second mounting base 3 is movably inserted into the intermediate base 4. In actual implementation, an installation groove 41 with a length direction along the radial direction of the large ring 1 can be opened on the intermediate base 4. The installation groove 41 is adapted to the shape of a partial structure on the second mounting base 3 to ensure the correctness of the sliding direction of the second mounting base 3. For example, the installation groove 41 can be configured as a square groove, and a partial structure of the second mounting base 3 can be configured as a square block adapted to the shape and size of the installation groove 41. In other embodiments, the shape of the installation groove 41 may not be adapted to the partial structure on the second mounting base 3, and the sliding direction of the second mounting base 3 can be maintained depending on the transmission cooperation relationship between the operation component and the second mounting base 3.

[0055] In the embodiment of the present application, the first mounting seat 2 and the second mounting seat 3 play a certain isolation role for the large ring 1, which can prevent the large ring 1 from wearing against the wear-resistant alloy steel plate on the soil-facing side. When the second mounting seat 3 wears against the wear-resistant alloy steel plate on the soil-facing side, by releasing the clamping relationship between the first clamping assembly and the second clamping assembly, and driving the second mounting seat 3 to slide radially through the operating assembly, the second mounting seat 3 can be conveniently disassembled and replaced. Among them, a detachable transmission fit can be adopted between the operating assembly and the second mounting seat 3, so that during the process of the operating assembly driving the second mounting seat 3, the second mounting seat 3 can automatically separate from the operating assembly. A detachable transmission fit does not necessarily have to be adopted between the operating assembly and the second mounting seat 3. When the second mounting seat 3 slides radially to a position convenient for operation, the assembly relationship between the second mounting seat 3 and the operating assembly can be released. Although there are disassembly and assembly processes for the operating assembly and the second mounting seat 3, compared with the existing method of maintaining by cutting off the large ring 1, the workload is greatly reduced and the maintenance efficiency is improved.

[0056] In the embodiment of the present application, the second mounting seat 3 is located between two adjacent first mounting seats 2, which means that the number of second mounting seats 3 is at least the same as the number of first mounting seats 2. The number of second mounting seats 3 can also be greater than the number of first mounting seats 2, that is, multiple second mounting seats 3 can be arranged between two adjacent first mounting seats 2; in actual implementation, the number of second mounting seats 3 between two adjacent first mounting seats 2 is set to one, that is, the number of second mounting seats 3 is the same as the number of first mounting seats 2. For example, the number of first mounting seats 2 can be configured to be four, and the four first mounting seats 2 are evenly distributed along the circumference of the large ring 1. One second mounting seat 3 is arranged between two adjacent first mounting seats 2, which means that the number of second mounting seats 3 is also configured to be four, and the four second mounting seats 3 are evenly distributed along the circumference of the large ring 1. This can make the structural distribution not too crowded and facilitate the disassembly and assembly of the second mounting seat 3; of course, in other embodiments, the number of first mounting seats 2 can also be configured to be two, three, five, etc. according to needs.

[0057] Preferably, the operating component is detachably drivingly engaged with the second mounting seat 3. That is, during the process of driving the second mounting seat 3 to slide, the second mounting seat 3 can automatically disengage from the operating component, eliminating the need for the disassembly work of the operating component and the second mounting seat 3, which is beneficial to improving the maintenance efficiency. Specifically, the operating component may include a gear 43, a transmission rod 44, a turntable 45 and a locking bolt 47; the second mounting seat 3 may include a main bracket 31, and the main bracket 31 may be configured as a square rod. One end of the main bracket 31 is adapted to the shape and size of the mounting groove 41; a rotating groove 42 is formed in the intermediate seat 4, the rotating groove 42 communicates with the mounting groove 41 and the rotating groove 42 and the mounting groove 41 are arranged adjacent to each other along the radial direction of the large ring 1, and the rotating groove 42 is closer to the center of the large ring 1 than the mounting groove 41. The gear 43 is rotatably arranged in the mounting groove 41, and a rack 33 is connected to the end of the main bracket 31, or a rack structure is formed at the end of the main bracket 31. One end of the main bracket 31 passes through the mounting groove 41 and meshes with the gear 43 in the rotating groove 42. Thus, rotating the gear 43 can drive the second mounting seat 3 to slide along the radial direction of the large ring 1; one end of the transmission rod 44 is coaxially connected to the gear 43, and the transmission rod 44 may be configured as a circular rod. In other embodiments, the transmission rod 44 may also be configured as a rod structure of any shape. That is, the coaxial connection between the transmission rod 44 and the gear 43 means that the length direction of the transmission rod 44 coincides with the axial direction of the gear 43. The other end of the transmission rod 44 movably passes through the intermediate seat 4 and is located outside the intermediate seat 4. The other end of the transmission rod 44 is connected to a turntable 45. A first locking hole is formed in the turntable 45, and a second locking hole 46 is formed in the intermediate seat 4. The locking bolt 47 sequentially passes through the first locking hole and the second locking hole 46 to limit the rotation of the turntable 45. Among them, the locking bolt 47 is threadedly connected to at least one of the first locking hole and the second locking hole 46, and the locking bolt 47 is fastened in the first locking hole and / or the second locking hole 46 by a threaded action to prevent accidental slipping. During actual operation, first, the positions of the first locking hole and the second locking hole 46 are corresponding. The corresponding relationship may be that the two coincide in the axial direction of the gear 43 or form a certain angle in the circumferential direction of the gear 43. The installation position of the second mounting seat 3 is fixed. That is, it means that since the main bracket 31 of the second mounting seat 3 starts to be drivingly engaged with the gear 43, when the second mounting seat 3 slides radially to the installation position, the number of turns of the gear 43 is fixed. That is, from the start of the driving engagement between the second mounting seat 3 and the gear 43 to the sliding to the installation position, the first locking hole and the second locking hole 46 can coincide in the axial direction of the gear 43. The locking bolt 47 can form a rotational limit on the gear 43, thereby being able to fix the second mounting seat 3.

[0058] In the embodiment of the present application, the setting of the rotating disk 45 can facilitate the staff to rotate the gear 43, and the rotating disk 45 can be located in the operation hole 11 or at a position corresponding to the operation hole 11. In other embodiments, the gear 43 can be driven by a motor to rotate, which means that the transmission rod 44, the rotating disk 45 and the locking bolt 47 are not required, and the rotation limit of the gear 43 can be achieved by the motor self-locking.

[0059] In the embodiment of the present application, the transmission rod 44 and the turntable 45 can also be connected by an intermediate rod to form a labor-saving lever structure, thereby facilitating operation by the staff. For example, the intermediate rod is vertically connected to the transmission rod 44, and the turntable 45 is connected to the intermediate rod.

[0060] In some optional embodiments, a connection structure that is easy to disassemble can be provided between the large circular ring 1 and the second mounting seat 3 to ensure the stability of the second mounting seat 3. For example, a limit assembly can be provided on the large circular ring 1, and the limit assembly is snap-connected with the second mounting seat 3. Specifically, the limit assembly can include an insertion rod 13, a limit ring 15 and a first elastic member 16; a limit groove 14 is provided in the large circular ring 1, and through holes that penetrate the large circular ring 1 can be provided at both ends of the limit groove 14 in the length direction, and the cross-section of the through hole is smaller than the cross-section of the limit groove 14. The insertion rod 13 is inserted into the limit groove 14 by self-piercing and movably passing through the large circular ring 1, and a plug hole 34 is provided on the second mounting seat 3, and the plug hole 34 corresponds to the position of the limit groove 14, which means that the insertion rod 13 can be inserted into the plug hole 34 after passing through the large circular ring 1; the limit ring 15 is coaxially connected to the insertion rod 13, wherein the limit ring 15 can be an integrally formed structure with the insertion rod 13, and can also form an integral structure with the insertion rod 13 by welding or other connection methods, and the limit ring 15 The cross-sectional shape of the rod 13 is larger than the cross-sectional shape of the through hole, which means that the limiting ring 15 is arranged in the limiting groove 14, and it cannot enter the through hole, thereby forming an axial limit for the insertion rod 13 to prevent the insertion rod 13 from being separated from the limiting groove 14. The first elastic member 16 is connected between the insertion rod 13 and the groove wall of the limiting groove 14. The first elastic member 16 can provide an axial elastic force for the insertion rod 13, which means that one end of the insertion rod 13 can be kept in the insertion hole 34 of the second mounting seat 3 under the elastic force of the first elastic member 16, thereby limiting the second mounting seat 3 to prevent the second mounting seat 3 from shaking on the large ring 1. When disassembling the second mounting seat 3, the insertion rod 13 can be pulled to overcome the elastic force of the first elastic member 16 to make one end of the insertion rod 13 separate from the insertion hole 34. In actual implementation, the first elastic member 16 can be configured as a spring, which is sleeved on the insertion rod 13 and connected to the insertion rod 13.

[0061] In some optional embodiments, the first clamping assembly may specifically include a fixed block 21, a slider 23, a second elastic member 25 and a guide rod 26; the fixed block 21 is connected to the first connecting seat, and a slide groove 24, a guide groove 27 and a slot 22 for inserting the second clamping assembly are constructed in the fixed block 21, and the slide groove 24 and the slot 22 are connected; the slider 23 is located in the slide groove 24, and the slider 23 can move in the slide groove 24. The slider 23 can shuttle back and forth between the slide groove 24 and the slot 22 in the active state, and a first clamping portion is constructed on the slider 23; the second elastic member 25 is connected to the slider 23 and to the groove wall of the slide groove 24 so that the slider 23 is located / partially located in the slot 22, that is, under the elastic force of the second elastic member 25, the slider 23 can remain inserted The groove 22 or part of its structure remains in the slot 22; the guide rod 26 is connected to the slider 23 and is inserted into the guide groove 27, and the guide rod 26 can slide in the guide groove 27 to drive the slider 23 to retreat from the slot 22 to the slide groove 24, that is, the staff can overcome the elastic force of the second elastic member 25 to move the guide rod 26 to drive the slider 23 to retreat to the slide groove 24; wherein, the second clamping component is constructed with a second clamping portion 38 that can form a clamping engagement with the first clamping portion, which means that after the second mounting seat 3 is in place at the installation position, the second clamping component can form a clamping engagement with the slider 23 in the slot 22, and the second clamping component cannot freely exit the slot 22 under the clamping action, thereby realizing the fixation of the second mounting seat 3 through the clamping action of the second clamping component and the slider 23.

[0062] In some optional embodiments, the first clamping portion and the second clamping portion 38 are both configured as wedges, and the second clamping assembly may include a connecting rod 37 and a second clamping portion 38, one end of the connecting rod 37 is fixedly connected to the second mounting seat 3, and the second clamping portion 38 is fixedly connected to the other end of the connecting rod 37, so that during the insertion of the second clamping assembly into the slot 22, the first clamping portion can form a holding force on the slider 23 after contacting the second clamping portion 38, and the holding force overcomes the elastic force of the second elastic member 25 to make the slider 23 retreat, and as the second clamping assembly is continuously inserted, the first clamping portion and the second clamping portion 38 are separated from each other, and the slider 23 re-enters the slot 22 under the elastic force of the second elastic member 25 to form a clamping connection with the second clamping portion 38. When the second mounting seat 3 is disassembled, the clamping connection between the first clamping portion and the second clamping portion 38 can be released by moving the guide rod 26 to make the slider 23 retreat to the slide groove 24.

[0063] In some alternative embodiments, a first positioning portion is provided on the first mounting base 2, and a second positioning portion capable of magnetically attracting the first positioning portion is provided on the second mounting base 3. Specifically, upper connecting blocks 28 are fixedly mounted on both sides of the first mounting base 2 as the first positioning portion. The upper connecting blocks 28 are provided with a plurality of positioning holes 29. The second mounting base 3 includes side brackets 32 connected to both sides of the main bracket 31. A lower connecting block 35 is fixedly mounted on one side of the side bracket 32 as the second positioning portion. A plurality of positioning posts 36 are fixedly mounted on the surface of the lower connecting block 35. Strong magnets are provided inside both the positioning posts 36 and the positioning holes 29. Through the magnetic attraction of the first positioning portion and the second positioning portion, a certain limiting effect can be exerted on the second mounting base 3 to prevent the second mounting base 3 from accidentally shaking. At the same time, the attraction force generated when the first positioning portion and the second positioning portion approach each other can facilitate the quick positioning of the second mounting base 3 to the installation position, providing convenience for the installation of the second mounting base 3.

[0064] In some alternative embodiments, wear-resistant strips 12 are mounted on the radially outer side of the large ring 1, thereby improving the wear resistance of the radially outer side of the large ring 1.

[0065] When the second mounting base 3 is damaged and needs to be replaced, pull out the insertion rod 13 so that the insertion rod 13 disengages from the insertion hole 34, rotate the locking bolt 47 so that the locking bolt 47 disengages from the second locking hole 46, and move the guide rod 26 to retract the slider 23 into the sliding groove 24 to release the clamping effect between the first clamping portion and the second clamping portion 38. Rotate the turntable 45 to drive the gear 43 to rotate. Under the meshing action of the gear 43 and the rack 33, the second mounting base 3 is driven to slide radially along the large ring 1. Continuously rotate the gear 43 so that the end of the main bracket 31 of the second mounting base 3 disengages from the mounting groove 41 to complete the removal of the second mounting base 3.

[0066] The above specific embodiments illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Although the description of the present application will be introduced in combination with some embodiments, this does not mean that the features of this application are limited to this implementation manner. On the contrary, the purpose of introducing the application in combination with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details are included in the above description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscuring the key points of the present application, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0067] It should be noted that in this specification, similar reference numerals and letters denote similar items in the above drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0068] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

Claims

1. A shield machine cutterhead that is easy to maintain, characterized in that: include: Large Ring (1); An intermediate seat (4), the intermediate seat (4) corresponds in position to the operating hole (11) of the large circular ring (1), and the intermediate seat (4) is provided with an operating assembly; a first mounting seat (2), the first mounting seat (2) being connected to the disk surface of the large circular ring (1) and connected to the intermediate seat (4), the number of the first mounting seats (2) being configured to be at least two and being arranged at intervals along the circumference of the large circular ring (1), and the first mounting seat (2) being provided with a first clamping assembly; A second mounting seat (3), the second mounting seat (3) is partially movably inserted in the intermediate seat (4) and located between two adjacent second mounting seats (3), the second mounting seat (3) is provided with a second clamping assembly that cooperates with the first clamping assembly, and the second mounting seat (3) is in transmission cooperation with the operating assembly so as to slide on the intermediate seat (4) along the radial direction of the large ring (1) under the drive of the operating assembly; Wherein, a rock breaker (5) is mounted on the first mounting seat (2) and the second mounting seat (3), respectively.

2. The shield machine cutter head that is easy to maintain according to claim 1 is characterized in that: The operating assembly and the second mounting seat (3) can be disengaged from the transmission fit.

3. The shield machine cutter head that is easy to maintain according to claim 1 or claim 2, characterized in that: The operating components include: a gear (43), the gear (43) being located inside the intermediate seat (4) and being rotatably connected to the intermediate seat (4); A transmission rod (44), the transmission rod (44) being coaxially connected to the gear (43) so that the transmission rod (44) can drive the gear (43) to rotate around its own axis on the intermediate seat (4); a rotating disk (45), the rotating disk (45) being connected to the transmission rod (44) and being located outside the large circular ring (1), and the rotating disk (45) being provided with a first locking hole; A locking bolt (47), wherein the locking bolt (47) is inserted into the first locking hole; The intermediate seat (4) is provided with a second locking hole (46), the locking bolt (47) is inserted into the second locking hole (46), and the locking bolt (47) is threadedly engaged with the first locking hole and / or the second locking hole (46); the second mounting seat (3) is provided with a rack (33) meshing with the gear (43) at a portion where the second mounting seat (3) is inserted into the turntable (45).

4. The shield machine cutter head that is easy to maintain according to claim 1 is characterized in that: The number of the first mounting seats (2) and the number of the second mounting seats (3) are respectively configured to be four; the first mounting seats (2) are evenly distributed along the circumference of the large circular ring (1); and the second mounting seats (3) are evenly distributed along the circumference of the large circular ring (1).

5. The shield machine cutter head that is easy to maintain according to claim 1 is characterized in that: A limit assembly is provided on the large circular ring (1), and the limit assembly is snap-connected with the second mounting seat (3).

6. The shield machine cutter head that is easy to maintain according to claim 5 is characterized in that: The limiting component comprises: An insertion rod (13), the insertion rod (13) movably passing through the large circular ring (1); A limiting ring (15), wherein the limiting ring (15) is coaxially connected to the insertion rod (13); A first elastic member (16), the first elastic member (16) being connected to the insertion rod (13); The large circular ring (1) is provided with a limiting groove (14) therein, the first elastic member (16) is connected to the groove wall at one end of the limiting groove (14) in the length direction, and the limiting ring (15) is abutted against the groove wall at the other end of the limiting groove (14) in the length direction under the action of the first elastic member (16); and the second mounting seat (3) is provided with a socket (34) for inserting the insertion rod (13).

7. The shield machine cutter head that is easy to maintain according to claim 1 is characterized in that: The first clamping assembly comprises: A fixed block (21), the fixed block (21) being connected to the first connecting seat, the fixed block (21) being provided with a slide groove (24), a guide groove (27) and a slot (22) for inserting the second clamping assembly, the slide groove (24) being in communication with the slot (22); A sliding block (23), the sliding block (23) being located in the sliding groove (24), and the sliding block (23) being provided with a first clamping portion; a second elastic member (25), the second elastic member (25) being connected to the slider (23) and to the slot wall of the slide slot (24) so ​​that the slider (23) is located / partially located in the slot (22); a guide rod (26), the guide rod (26) being connected to the slider (23) and passing through the guide groove (27), the guide rod (26) being able to slide in the guide groove (27) to drive the slider (23) to retreat from the slot (22) to the slide groove (24); Wherein, the second clamping assembly is provided with a second clamping portion (38) capable of clamping with the first clamping portion.

8. The shield machine cutter head that is easy to maintain according to claim 7 is characterized in that: The first clamping portion and the second clamping portion (38) are both configured as wedge blocks.

9. The shield machine cutter head that is easy to maintain according to claim 1, characterized in that: The first mounting seat (2) is provided with a first positioning portion, and the second mounting seat (3) is provided with a second positioning portion that can be magnetically attracted to the first positioning portion.

10. The shield machine cutter head that is easy to maintain according to claim 1, characterized in that: A wear-resistant strip (12) is installed on the radial outer side of the large ring (1).

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