Cutter head capable of being rapidly disassembled and assembled and heading machine

Abstract

The utility model discloses a fast dismounting cutterhead and a heading machine, the fast dismounting cutterhead comprises a cutterhead panel and a twisting leg assembly, the cutterhead panel comprises a first edge block, a center block and a second edge block which are connected through a transition piece and a large circular ring, the twisting leg assembly comprises a twisting leg flange detachably connected with the center block, a cutter head flange detachably connected with a part outside the cutter head, and a cutter head twisting leg connected between the twisting leg flange and the cutter head flange; the heading machine comprises the cutter head capable of being rapidly disassembled and assembled. According to the technical scheme, the size of the cutterhead can be reduced in the radial direction when the cutterhead is dismantled, the transition piece is designed on the cutterhead panel, the dismantling position can be found conveniently when the cutterhead is dismantled, and the re-assembling time can be shortened by prefabricating the transition piece in advance; in addition, the twisting leg flange is additionally arranged between the cutter twisting leg and the center block, the cutter twisting leg and the center block are detachably connected and can be rapidly disassembled and assembled, the block weight is further reduced, and it is guaranteed that the position relation of the cutter twisting leg and the center block is not changed when the cutter twisting leg and the center block are assembled again.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heading machine cutter head, especially refers to a quick dismounting cutter head and heading machine. BACKGROUND

[0002] With the development of cities, the number of ground buildings and underground tunnels is gradually increasing, and the available urban underground space is increasingly limited, the new tunnel crossing the existing tunnel is gradually increasing, and the short-distance multi-section tunnel construction project is also increasing, therefore, the heading machine hole dismounting project for tunnel excavation is more and more.

[0003] The existing hole dismounting project is limited by the hole transportation space and the sling capacity, the cutter head of the heading machine is completely destroyed and removed, except for the cutter and a small number of cutter box accessories, other components cannot be used again. Therefore, the overall manufacturing cost of the cutter head is high, and the production cycle is long. At the same time, due to the limitation of the hole operation space, it is difficult to destructively dismount the cutter head in the hole, the construction risk is large, and a large amount of time and capital investment is required.

[0004] It should be particularly noted that the above technical information is only intended to deepen the understanding of the overall background technology of the utility model, and should not be regarded as acknowledging or implying in any form that the above technical information constitutes the prior art known to those skilled in the art. SUMMARY

[0005] In view of the deficiencies in the above background technology, the utility model provides a quick dismounting cutter head and heading machine, and the technical problem to be solved is how to quickly dismount the cutter head in the tunnel construction hole and provide the cutter head for reuse.

[0006] The technical scheme of the utility model is as follows:

[0007] A quick dismounting cutter head comprises a cutter head panel and a twisted leg assembly, the cutter head panel comprises an edge block one, a center block and an edge block two connected through a transition piece and a large circular ring, the twisted leg assembly comprises a twisted leg flange detachably connected with the center block, a cutter head flange detachably connected with components outside the cutter head, and a cutter head twisted leg connected between the twisted leg flange and the cutter head flange. As described above, in the technical scheme, the cutter head panel is divided into the edge block one, the center block and the edge block two through the transition piece, which can reduce the size of the cutter head from the radial direction when dismounting, in addition, the cutter head panel can be further divided into more blocks according to the dismounting space and hoisting capacity; at the same time, the transition piece is designed on the cutter head panel, which not only facilitates finding the dismounting position when dismounting the cutter head, but also reduces the reassembly time by prefabricating the transition piece; in addition, the twisted leg flange is added between the cutter head twisted leg and the center block, and the two are changed into a detachable connection form, which can be quickly dismounted, further reduces the weight of the blocks, and ensures that the positional relationship between the two is unchanged when reassembled.

[0008] On the basis of the above technical solutions, as the preferred technical solutions of the quick disassembly and assembly cutter head, the transition piece includes a main beam transition piece for radially connecting the main beam and a vice beam transition piece for radially connecting the vice beam. Since the main beam and the vice beam have different structures, the corresponding structural pieces are not universal. In order to improve the quickness of the cutter head re-manufacturing assembly, the transition piece is divided into two types, which can be prefabricated respectively, and the corresponding main beam transition piece and vice beam transition piece are provided for the main beam and the vice beam respectively.

[0009] On the basis of the above technical solutions, as the preferred technical solutions of the quick disassembly and assembly cutter head, the side block one and the side block two each include a main beam segment detachably connected with the center block, and two vice beam segments located on both sides of the main beam segment. That is, the center block has the main beam segment and the vice beam segment adapted to the side block one and the side block two respectively in addition to the complete main beam and the vice beam; and the side block one and the side block two only have the main beam segment and the vice beam segment adapted to the center block, and do not have the complete main beam and the vice beam, so that the radial size of the cutter head can be reduced during disassembly and assembly to facilitate hoisting, and the center block can be used as the assembly basis and the disassembly basis. That is, during assembly, the center block can be hoisted into position first, and then the side block one and the side block two are assembled in the axial direction respectively; during disassembly, the side block one and the side block two can be removed in the axial direction first, and then the center block is hoisted out.

[0010] On the basis of the above technical solutions, as the preferred technical solutions of the quick disassembly and assembly cutter head, the main beam transition piece includes two ladder steel plates for connecting the main beam cutter case side plates respectively, and the size of the ladder steel plate toward the one end of the working face is smaller than the size of the one end away from the working face, so as to facilitate the disassembly and installation of the side block one and the side block two in the axial direction, and avoid extruding the steel plate structure on both sides when the main beam transition piece is removed.

[0011] On the basis of the above technical solutions, as the preferred technical solutions of the quick disassembly and assembly cutter head, the vice beam transition piece is a frame type ladder structure formed by welding a plurality of steel plates, and the size of the frame type ladder structure toward the one end of the working face is smaller than the size of the one end away from the working face, and the size of the one end close to the center block is smaller than the size of the one end away from the center block, so as to facilitate the disassembly and installation of the side block one and the side block two in the axial direction, and avoid extruding the steel plate structure on both sides when the vice beam transition piece is removed.

[0012] On the basis of the above technical solutions, as the preferred technical solutions of the quick disassembly and assembly cutter head, the center block and the side block one, and the center block and the side block two are each provided with a positioning assembly close to the transition piece position and used for positioning connection, so as to provide positioning and support for the re-manufacturing assembly of the cutter head, that is, to facilitate the positioning and welding between the side block one, the center block and the side block two.

[0013] On the basis of the above technical scheme, as the preferred technical scheme of the quick dismounting cutterhead, the positioning assembly comprises a fixed block connected to the center block, a fixed block connected to the side block one or the side block two, and adjacent fixed blocks are connected through bolts and nuts, and a fixed-length sleeve is arranged on the position of the bolt between the adjacent fixed blocks.

[0014] On the basis of the above technical scheme, as the preferred technical scheme of the quick dismounting cutterhead, at least two positioning assemblies are arranged on the cutterhead panel near each transition piece, and the two positioning assemblies are symmetrically arranged about the transition piece.

[0015] On the basis of the above technical scheme, as the preferred technical scheme of the quick dismounting cutterhead, a positioning pin is arranged between the twisted leg flange and the center block, and the twisted leg flange and the center block are detachably connected through a double-headed stud or a bolt.

[0016] A heading machine comprises a shield body, and the front end of the shield body is provided with the quick dismounting cutterhead of any one of the above technical schemes.

[0017] Compared with the prior art, the quick dismounting cutterhead and the heading machine have the following beneficial effects:

[0018] Through structural blocking, the time for on-site dismounting positioning is reduced, and the transition piece adopts a tapered surface design with a small front part and a large rear part, so that the dismounting at the blocking part is ensured to be smooth. The flange at the twisted leg of the cutterhead adopts a bolt connection mode, so that the cutterhead can be quickly dismounted and restored, the weight and volume of the center block of the cutterhead are reduced, the bearing capacity requirement of the lifting appliance during machine dismounting is reduced, and the boundary conditions for in-hole transportation are met. The positioning block is reserved before dismounting, so that the speed and quality requirements for re-assembly after dismounting are met. The cutterhead can greatly reduce the in-hole dismounting workload, reduce the construction risk, and can be quickly restored after dismounting, so that the construction period requirements of the construction party can be effectively met. After the cutterhead is dismounted, more than 95% of the parts can be reused, and a large amount of funds can be saved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0020] Figure 1 It is the front view of the quick dismounting cutterhead.

[0021] Figure 2 It is the front view of the quick dismounting cutterhead. Figure 1 It is the sectional view of the quick dismounting cutterhead.

[0022] Figure 3 It is the front view of the side block one.

[0023] Figure 4 Main view of the center block;

[0024] Figure 5 Main view of the side block two;

[0025] Figure 6 Sectional view of the twist leg assembly;

[0026] Figure 7 Main view of the cutterhead panel;

[0027] Figure 8 Sectional view of the Figure 7 ;

[0028] Figure 9 Status diagram of the quick disassembly and assembly of the cutterhead during expansion;

[0029] Figure 10 Status diagram of the quick disassembly and assembly of the cutterhead during retraction;

[0030] Figure 11 Status diagram of the cutterhead panel after installation of the positioning assembly;

[0031] Figure 12 Status diagram of the cutterhead panel after removal of the transition piece and disconnection of the large ring;

[0032] Figure 13 Local enlarged view of the installation position of the positioning assembly;

[0033] Figure 14 A view of the Figure 13 ;

[0034] Figure 15 Local sectional view of the transition piece area of the secondary beam;

[0035] Figure 16 Status diagram of the radial contraction of the side block one and the side block two;

[0036] Figure 17 Local sectional view of the connection between the center block and the twist leg assembly;

[0037] Figure 18 Status diagram of the removal of the twist leg assembly;

[0038] Figure 19 Status diagram of the removal of the side block one or the side block two;

[0039] Figure 20 Status diagram of the removal of the center block;

[0040] Figure 21 Status diagram of the cutterhead panel after installation of the positioning assembly during reassembly of the quick disassembly and assembly of the cutterhead;

[0041] Figure 22 Figure 1 is a perspective view of the main beam transition piece, the tool box and the tool; Figure 21 Figure 2 is a perspective view of the main beam transition piece, the tool box and the tool after installation;

[0042] Figure 23 Figure 3 is a perspective view of the main beam transition piece, the tool box and the tool after installation; Figure 22 Figure 4 is a sectional view of the twist leg assembly after installation;

[0043] Figure 24 Figure 5 is a perspective view of the main beam transition piece, the tool box and the tool after installation; Figure 23 Figure 6 is a perspective view of the main beam transition piece, the tool box and the tool after installation.

[0044] BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a perspective view of the main beam transition piece, the tool box and the tool;

[0046] Figure 1 is a perspective view of the main beam transition piece, the tool box and the tool;

[0047] Figure 1 is a perspective view of the main beam transition piece, the tool box and the tool;

[0048] Figure 1 is a perspective view of the main beam transition piece, the tool box and the tool;

[0049] Figure 1 is a perspective view of the main beam transition piece, the tool box and the tool;

[0050] Figure 1 is a perspective view of the main beam transition piece, the tool box and the tool;

[0051] Figure 1 is a perspective view of the main beam transition piece, the tool box and the tool; DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the core idea of the present application and the following embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0053] The present application provides these embodiments in order to make the present application thorough and complete, and fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions and values set forth in these embodiments should be interpreted as merely exemplary, rather than as limiting.

[0054] It should be noted that in the description of the present application, unless otherwise specified and limited, the meaning of "several" is greater than or equal to two; The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial" and the like is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation to the present application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0055] In addition, "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0056] It should also be noted that in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium; It can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. When it is described that a specific device is located between the first device and the second device, there can be or can not be an intermediate device between the specific device and the first device or the second device.

[0057] All terms used in the present application have the same meaning as understood by those skilled in the art to which the present application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted to have meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formalized sense, unless specifically defined here.

[0058] Techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be considered as part of the specification.

[0059] In view of the deficiencies in the background art, the present application provides a quick dismounting shield cutter disc and a dismounting method, which solve the problems of difficult dismounting of the shield cutter disc in the tunnel construction hole and low part reuse rate in the prior art. The core application point is that the cutter disc panel is bolted with the flange at the twisted leg, and the transition block is added in the block area of the cutter disc panel to realize quick dismounting and weight reduction.

[0060] The specific implementation is as follows:

[0061] A quick dismounting cutter disc, as shown in Figure 1 and Figure 2 , comprises a cutter disc panel 12 and a twisted leg assembly 13, as shown in Figure 1 and Figure 7 , the cutter disc panel 12 comprises an edge block one 101, a center block 102 and an edge block two 103 connected through a transition piece and a large circular ring 126, as shown in Figure 2 and Figure 6 , the twisted leg assembly 13 comprises a twisted leg flange 133 detachably connected with the center block 102, a cutter disc flange 131 detachably connected with the components outside the cutter disc, and a cutter disc twisted leg 132 connected between the twisted leg flange 133 and the cutter disc flange 131.

[0062] As shown in 1 to Figure 8 , in this embodiment, the cutter disc panel is divided into the edge block one 101, the center block 102 and the edge block two 103 through the transition piece, which can reduce the size of the cutter disc from the radial direction when dismounting, and in addition, the cutter disc panel 12 can be dismounted into more blocks according to the dismounting space and hoisting capacity; at the same time, the transition piece is designed on the cutter disc panel 12, which not only facilitates finding the dismounting position when dismounting the cutter disc, but also reduces the reassembly time by prefabricating the transition piece in advance; in addition, the twisted leg flange 133 is added between the cutter disc twisted leg 132 and the center block 102, and the two are changed into a detachable connection form, which can be quickly dismounted, further reduces the weight of the block, and ensures that the positional relationship of the two does not change when reassembled.

[0063] On the basis of the above embodiment, as a preferred embodiment of the quick dismounting cutter disc, as shown in Figure 7 , the transition piece comprises a main beam transition piece 123 for radially connecting a main beam 121 and a vice beam transition piece 127 for radially connecting a vice beam 122. Since the main beam 121 and the vice beam 122 have different structures, the corresponding structural pieces are not universal, in order to improve the quickness when the cutter disc is reassembled, the transition piece is divided into two types, which can be prefabricated respectively, and the corresponding main beam transition piece 123 and vice beam transition piece 127 are provided for the main beam 121 and vice beam 122 respectively.

[0064] On the basis of the above embodiment, as a preferred embodiment of the quick dismounting cutter disc, as shown in Figure 3 to Figure 5As shown, the side block one 101 and the side block two 103 each include a main beam segment detachably connected with the center block 102, and two auxiliary beam segments on both sides of the main beam segment. That is, the center block 102 has the main beam segment and the auxiliary beam segment adapted with the side block one 101 and the side block two 103 respectively in addition to the complete main beam 121 and the auxiliary beam 122; and the side block one 101 and the side block two 103 only have the main beam segment and the auxiliary beam segment adapted with the center block 102, and do not have the complete main beam 121 and the auxiliary beam 122, which can reduce the radial size of the cutter disc during disassembly and assembly, facilitate hoisting, and take the center block 102 as the assembly basis and the disassembly basis. That is, during assembly, the center block 102 can be hoisted into position first, and then the side block one 101 and the side block two 103 are assembled in the axial direction respectively; during disassembly, the side block one 101 and the side block two 103 can be removed in the axial direction first, and then the center block 102 is hoisted out.

[0065] On the basis of the above embodiment, as a preferred embodiment of the quick disassembly and assembly cutter disc, the main beam transition piece 123 includes two trapezoidal steel plates for connecting the main beam cutter case side plates respectively, and the size of the trapezoidal steel plate towards the working face one end is smaller than the size away from the working face one end, facilitating the removal and installation of the side block one 101 and the side block two 103 in the axial direction, and avoiding extrusion of the steel plate structure on both sides when the main beam transition piece 123 is removed.

[0066] On the basis of the above embodiment, as a preferred embodiment of the quick disassembly and assembly cutter disc, as shown in Figure 13 to Figure 15 The auxiliary beam transition piece 127 is a frame type trapezoidal structure formed by welding a plurality of steel plates, and the size of the frame type trapezoidal structure towards the working face one end is smaller than the size away from the working face one end, and the size close to the center block 102 one end is smaller than the size away from the center block 102 one end, facilitating the removal and installation of the side block one 101 and the side block two 103 in the axial direction, and avoiding extrusion of the steel plate structure on both sides when the auxiliary beam transition piece 127 is removed.

[0067] On the basis of the above embodiment, as a preferred embodiment of the quick disassembly and assembly cutter disc, as shown in Figure 11 and Figure 12 As shown, the center block 102 and the side block one 101, and the center block 102 and the side block two 103 are each provided with a positioning assembly 14 close to the transition piece position and used for positioning connection, which provides positioning and support for the re-manufacturing and assembly of the cutter disc, that is, facilitates the positioning and welding between the side block one 101, the center block 102 and the side block two 103.

[0068] On the basis of the above embodiment, as a preferred embodiment of the quick disassembly and assembly cutter disc, as shown in Figure 13As shown, the positioning assembly 14 includes fixed blocks 141 connected on the center block 102, fixed blocks 141 connected on the edge block one 101 or the edge block two 103, adjacent fixed blocks 141 are connected by bolts 142 and nuts 144, and the bolts 142 are sleeved with fixed-length sleeves 143 at the positions between the adjacent fixed blocks 141.

[0069] On the basis of the above embodiment, as a preferred embodiment of the quick disassembly cutter head, at least two positioning assemblies 14 are arranged on the cutter head panel 12 near each transition piece, and the two positioning assemblies 14 are symmetrically arranged about the transition piece.

[0070] On the basis of the above embodiment, as a preferred embodiment of the quick disassembly cutter head, a positioning pin 151 is arranged between the twisted leg flange 133 and the center block 102, and the twisted leg flange 133 and the center block 102 are detachably connected by a double-headed stud 152 or a bolt.

[0071] As a preferred embodiment of the quick disassembly cutter head, Figure 1 to Figure 24 As shown, the cutter head 1 has a cutter head panel 12, which is composed of a main beam 121, a secondary beam 122, a transition piece, etc.; the transition piece includes a main beam transition piece 123 for radially connecting the main beam 121 at the block, a secondary beam transition piece 127 for radially connecting the secondary beam 122 at the block, and the main beam transition piece 123 and the secondary beam transition piece 127 are respectively located at the connection of the main beam 121 and the secondary beam 122 at the block; the main beam transition piece 123 and the secondary beam transition piece 127 are both designed as trapezoidal structures with the front small and the rear large, to prevent the two side steel plates from being squeezed when disassembled backward; the main beam transition piece 123 includes two trapezoidal steel plates for connecting the main beam cutter box side plates respectively, and the size of the trapezoidal steel plate toward the one end of the working face is smaller than the size of the trapezoidal steel plate away from the one end of the working face; the secondary beam transition piece 127 is a frame type trapezoidal structure composed of multiple steel plates, and the size of the frame type trapezoidal structure toward the one end of the working face is smaller than the size of the frame type trapezoidal structure away from the one end of the working face, and the size of the frame type trapezoidal structure close to the one end of the center block 102 is smaller than the size of the frame type trapezoidal structure away from the one end of the center block 102; the cutter head flange 131 is connected with other components outside the shield cutter head; the cutter head twisted leg 132 connects the cutter head flange 131 and the twisted leg flange 133; the twisted leg flange 133 connects the cutter head twisted leg 132 and the cutter head panel 12; the positioning pin 134 is located at the connection of the twisted leg flange 133 and the cutter head panel 12; the positioning assembly 14 is installed at the transition of the cutter head panel block before disassembly, and completes the positioning between blocks when reassembled; the lifting lug 162 is installed on the cutter head panel during disassembly and assembly, to assist in hoisting.

[0072] As shown, Figure 1 , Figure 2 As shown, the cutter head 1 can be divided into four blocks, Figure 3 the edge block one 101, Figure 4 the center block 102, Figure 5For edge block 2 103, Figure 6 For the leg twisting assembly 13.

[0073] like Figure 7 , Figure 8 As shown, the cutter head panel 12 includes a main beam 121, a secondary beam 122, a transition piece 123, a cutter box 124, a cutting tool 125, a large ring 126, etc.

[0074] like Figure 9 As shown, when dismantling the cutterhead 1 inside the tunnel, the cutterhead 1 first expands the excavation to the front and outside of the tunnel. The bottom can be partially expanded by manual assistance and reinforced.

[0075] like Figure 10 As shown, after the excavation is completed, the cutter 1 is retracted by the hydraulic cylinder 2.

[0076] Next, as Figure 11 , Figure 12 As shown, fix the positioning component 14 on the cutter head panel 12, remove the main beam transition piece 123, the secondary beam transition piece 127, the cutter box 124, the cutter 125, etc., and disconnect the large ring 126 in the direction shown in the figure.

[0077] like Figure 13 As shown, the positioning component 14 includes a fixing block 141, bolt 142, sleeve 143, nut 144, etc.

[0078] like Figure 16 As shown, after dismantling, remove bolts 142, sleeves 143, nuts 144, etc., leaving only fixing block 141, and retract side block one 101 and side block two 103 inward.

[0079] like Figure 17 As shown, a positioning pin 151 is arranged between the torsion leg assembly 13 and the cutter head panel 12, and the torsion leg assembly 13 and the cutter head panel 12 are connected by a double-ended stud 152.

[0080] like Figure 18 As shown, the double-headed stud 152 is removed, and the torsion leg assembly 13 is transported out of the hole using the lifting tool 161.

[0081] like Figure 19 Install lifting lug 162, and remove side block 101 and side block 2 103 in sequence, and transport them out of the hole.

[0082] like Figure 20 As shown, install the lifting lug 162, and finally remove the center block 102 and transport it out of the hole.

[0083] like Figure 21 As shown, mounting bolts 142, sleeves 143, nuts 144, etc., are used to complete the reassembly of the cutter head panel 12 using the positioning assembly 14.

[0084] likeFigure 22 、 Figure 23 As shown in FIG. 12, the newly-made main beam transition piece 123, the auxiliary beam transition piece 127, the tool box 124 are fixed, the large circular ring 126 is welded, the tool 125 is installed, etc.; the positioning pin 151 is used to complete the group assembly of the twisted leg assembly 13, and the stud bolt 152 is tightened.

[0085] As shown in FIG. 13, the positioning assembly 14 is removed, and the cutter head 1 is restored. Figure 24 As shown in FIG. 13, the positioning assembly 14 is removed, and the cutter head 1 is restored.

[0086] As described above, the transition piece is designed on the cutter head panel, so that the disassembly position can be found when the cutter head is disassembled, and the transition piece is prefabricated in advance, so that the reassembly time can be reduced; the connecting flange is added between the cutter head twisted leg and the cutter head panel, so that the two are changed into the bolted connection form, the cutter head panel can be quickly disassembled and assembled, the weight of the cutter head panel is reduced, and the position relationship between the cutter head twisted leg and the cutter head panel is unchanged when the cutter head panel is reassembled; the positioning pin is added between the cutter head panel and the twisted leg assembly, so that the positioning and assembly of the twisted leg flange and the center block are completed, and the bolt is prevented from being sheared and broken; the positioning assembly is designed, so that the reassembly of the cutter head panel after the cutter head panel is disassembled is assisted.

[0087] It should be noted that the stud bolt can also be changed into a connection form such as a bolt; if the hoisting capacity on site is insufficient, the number of cutter head panel blocks can be increased, and the transition piece can also be increased; when hoisting, hoisting forms such as lifting lugs and lifting belts can be used.

[0088] Therefore, according to the present application, the cutter head of the shield machine can be quickly disassembled and assembled in the hole.

[0089] A tunneling machine comprises a shield body, and the front end of the shield body is provided with the quick disassembly and assembly cutter head described in any one of the above embodiments.

[0090] The details of the present application are conventional technical means known to those skilled in the art.

[0091] The above shows and describes the basic principles, main features and beneficial effects of the present application. The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A quick detachable cutter head, characterized in that: The cutter head panel (12) comprises a first edge block (101), a center block (102) and a second edge block (103) connected by a transition piece and a large circular ring (126), and the twist leg assembly (13) comprises a twist leg flange (133) detachably connected with the center block (102), a cutter head flange (131) detachably connected with a component outside the cutter head, and a cutter head twist leg (132) connected between the twist leg flange (133) and the cutter head flange (131).

2. The quick-change cutter head of claim 1, wherein: The transition piece comprises a main beam transition piece (123) for radially connecting a main beam (121) and a sub-beam transition piece (127) for radially connecting a sub-beam (122).

3. The quick-change cutter head of claim 2, wherein: The first edge block (101) and the second edge block (103) each comprise a main beam segment detachably connected with the center block (102) and two sub-beam segments located on both sides of the main beam segment.

4. The quick-change tool head according to claim 2 or 3, characterized in that: The main beam transition piece (123) comprises two trapezoidal steel plates for connecting main beam cutter box side plates respectively, and the size of the trapezoidal steel plate towards the working face end is smaller than the size away from the working face end.

5. The quick change tool bit of claim 4, wherein: The sub-beam transition piece (127) is a frame type trapezoidal structure formed by welding a plurality of steel plates, and the size of the frame type trapezoidal structure towards the working face end is smaller than the size away from the working face end and the size close to the center block (102) end is smaller than the size away from the center block (102) end.

6. The quick-change tool head according to any one of claims 1-3, 5, characterized in that: The center block (102) and the first edge block (101) and the center block (102) and the second edge block (103) are each provided with a positioning assembly (14) close to the transition piece position and used for positioning connection.

7. The quick change tool bit of claim 6 wherein: The positioning assembly (14) comprises a fixed block (141) connected on the center block (102) and a fixed block (141) connected on the first edge block (101) or the second edge block (103), adjacent fixed blocks (141) are connected by bolts (142) and nuts (144), and the bolts (142) are located in the position between the adjacent fixed blocks (141) and are sleeved with a fixed length sleeve (143).

8. The quick change tool bit of claim 6 wherein: At least two positioning assemblies (14) are arranged on the cutter head panel (12) close to each transition piece position, and the two positioning assemblies (14) are symmetrically arranged about the transition piece.

9. The quick-change cutter head according to any one of claims 1-3, 5, 7-8, wherein: A positioning pin (151) is arranged between the twist leg flange (133) and the center block (102), and the twist leg flange (133) and the center block (102) are detachably connected by a double-headed stud (152) or a bolt.

10. A heading machine comprising a shield body, characterised in that: The front end of the shield body is provided with the quick dismounting cutter head of any one of claims 1-9.

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