Lifting device for shield machine cutterhead

Abstract

The invention discloses a lifting device for a cutter head of a shield machine, comprising a double lifting beam group and a turning lifting ear group, the double lifting beam group comprising a lifting ear plate, a supporting beam being arranged between the two lifting ear plates, the two lifting ear plates being respectively fixed to different sides of a hanging seat; the turning lifting ear group comprising a first turning lifting ear and a second turning lifting ear, the first turning lifting ear comprising a first lifting ear plate and a second lifting ear plate, a spacing being provided between the first lifting ear plate and the second lifting ear plate for the second turning lifting ear to extend into; an adjusting portion is also arranged between the first lifting ear plate and the second lifting ear plate, and a circular ring side wall of the cutter head is clamped by the adjusting portion and the second turning lifting ear; during the lifting process, the double lifting beam group is fixed to the hanging seat, the turning lifting ear group is fixed to the bottom of the cutter head, the first turning lifting ear extends from the inner side to the outer side of the cutter head, the adjusting portion is located on the inner side of the cutter head, the second turning lifting ear extends from the outer side of the cutter head to the inner side into the spacing between the first lifting ear plate and the second lifting ear plate, so as to fix the first turning lifting ear and the second turning lifting ear.

Description

Technical Field

[0001] The invention relates to the technical field of shield machines, and in particular to a hoisting device for a cutter head of a shield machine. Background Art

[0002] The cutterhead is an important component of the shield machine. It needs to be hoisted in every link of the shield cutterhead processing and manufacturing, workshop assembly and debugging, underground assembly, disassembly after the completion of the project, and cutterhead maintenance and reuse. Throughout the whole process, the cutterhead needs to be hoisted several times. Therefore, how to safely, quickly, conveniently, reliably and economically realize the lifting of the cutterhead is a question worth considering.

[0003] The shield cutterhead was initially hoisted with welded lifting lugs. This method has a simple and reliable lifting lug structure and is easy to operate during the workshop manufacturing process. However, before the assembly is completed on the construction site and excavation begins, the lifting lugs need to be planed off and the lug positions need to be polished. Wear-resistant plates or wear-resistant welds need to be welded at the corresponding positions. This operation process belongs to the category of high-altitude operations, which is difficult and risky. In addition, after the project is completed, the cutterhead needs to be dismantled, repaired and reused, which is time-consuming, labor-intensive and material-intensive. Repeated welding, grinding, cutting and planing also cause great damage to the structural strength of the cutterhead itself. Therefore, this form of hoisting has been gradually replaced, and detachable hoisting has begun to be designed and used. Through the analysis of existing detachable hoisting, it is found that most of them use a single lifting point, which is not very stable. In addition, when the cutterhead is turned from horizontal to vertical (or vertical to horizontal) and when the cutterhead is turned upside down, it is difficult to achieve lifting with a single point without an auxiliary lifting point. Summary of the invention

[0004] The purpose of the present invention is to provide a lifting device for a shield machine cutter head, which is convenient for disassembly and assembly and is beneficial to the change of the cutter head's orientation and the turning over of the cutter head.

[0005] To achieve the above object, the present invention provides a hoisting device for a cutter head of a shield machine, comprising:

[0006] A double hanging beam group, the double hanging beam group includes hanging ear plates located on both sides, a support beam is provided between the two hanging ear plates, and the two hanging ear plates are used to be detachably fixed to different sides of the hanging seat of the cutter disc respectively;

[0007] A turning ear group, the turning ear group comprises a first turning ear and a second turning ear which are detachably connected, the first turning ear comprises a first ear plate and a second ear plate which are connected to each other, and there is a spacing between the first ear plate and the second ear plate for the second turning ear to extend into; an adjusting portion is further provided between the first ear plate and the second ear plate, and the circular ring side wall of the cutter disc is clamped by the adjusting portion and the second turning ear;

[0008] During the lifting process, the top of the double lifting beam group is fixed to the shackle, the double lifting beam group and the hanging seat are fixed, the turning lifting ear group is fixed to the bottom of the cutter disc, the first turning lifting ear extends from the inside to the outside of the cutter disc, the adjustment part is located on the inside of the cutter disc, and the second turning lifting ear extends from the outside to the inside of the cutter disc into the gap between the first lifting ear plate and the second lifting ear plate, and the first turning lifting ear and the second turning lifting ear are fixed so that the double lifting beam group and the turning lifting ear group are respectively fixed at different positions of the cutter disc.

[0009] Optionally, connecting ribs and fixing ribs are provided between the first ear plate and the second ear plate, the connecting ribs and the fixing ribs are provided with coaxial through holes, and the adjustment part is sequentially penetrated by two through holes so that the end of the adjustment part and the annular side wall of the cutter disc are abutted.

[0010] Optionally, the through hole provided in the fixing rib is specifically a threaded hole, and the adjusting part includes a screw rod, which passes through the connecting rib and cooperates with the threaded hole.

[0011] Optionally, the second turning ear is provided with a connecting hole, the first turning ear is provided with a mounting hole coaxial with the connecting hole, and a connecting portion is detachably connected between the connecting hole and the mounting hole to achieve detachable connection between the first turning ear and the second turning ear.

[0012] Optionally, blocking parts are provided on both sides of the first turning ear, which blocks the mounting hole. A blocking block is provided at one end of the mounting hole. The blocking part is fixed by the fixing part and the first turning ear to prevent the connecting part from falling off from the mounting hole.

[0013] Optionally, it also includes a connecting piece that cooperates with the ear plate, the connecting piece is used to fix the ear plate and the hanger, and a sealing plate for covering the connecting piece is also provided on the outside of the ear plate, and the sealing plate is fixed to the ear plate by fasteners to prevent the connecting piece from detaching from the ear plate and the hanger.

[0014] Optionally, the support beam comprises: a cylinder, a rib plate and a panel, the cylinder is arranged horizontally, two panels are arranged at two ends of the cylinder respectively, and the rib plate is arranged between the panel and the cylinder.

[0015] Optionally, a shackle is provided on the top of the panel, and the panel and the shackle are detachably connected via a shackle pin, and the shackle pin is locked by a cotter pin to fix the double hanger beam group and the shackle.

[0016] Optionally, a blocking piece is also included, which is used to block the lifting hole of the lifting seat when not lifting.

[0017] Compared with the above background technology, the hoisting device of the cutter head of the shield machine provided by the present invention includes a double lifting beam group and a turning lifting ear group, the double lifting beam group includes lifting ear plates located on both sides, a supporting beam is provided between the two lifting ear plates, and the two lifting ear plates are used to be detachably fixed to different sides of the cutter head suspension seat respectively; the turning lifting ear group includes a first turning lifting ear and a second turning lifting ear that are detachably connected, the first turning lifting ear includes a first lifting ear plate and a second lifting ear plate that are connected to each other, and a space is provided between the first lifting ear plate and the second lifting ear plate for the second turning lifting ear to extend into. distance; an adjustment part is also provided between the first lifting ear plate and the second lifting ear plate, and the annular side wall of the cutter disc is clamped by the adjustment part and the second turning lifting ear; during the lifting process, the top of the double lifting beam group is fixed to the shackle, the double lifting beam group and the hanging seat are fixed, the turning lifting ear group is fixed to the bottom of the cutter disc, the first turning lifting ear extends from the inside to the outside of the cutter disc, the adjustment part is located on the inside of the cutter disc, and the second turning lifting ear extends from the outside of the cutter disc to the inside into the distance between the first lifting ear plate and the second lifting ear plate, and fixes the first turning lifting ear and the second turning lifting ear.

[0018] The lifting device of the cutter head of the shield machine set up in this way, the double lifting beam group and the turning over lifting ear group can be disassembled relative to the cutter head, and are simple to install, convenient to disassemble, and recyclable; the structural form of the double lifting beam group can realize two-point simultaneous lifting, and the distance between the double lifting points on both sides of the double lifting beam group can be adjusted, which has good force, and is more stable for lifting and turning over. At the same time, only the length of the supporting beam of the double lifting beam group is adjusted to meet the needs of main beams of different sizes of the cutter head, so that the lifting device of the cutter head of the shield machine has strong adaptability and high recycling rate. The lifting ear plates on both sides are connected into a whole through the connection of the supporting beams, avoiding uneven force caused by lifting with two independent lifting points; at the same time, the risk of the lifting device falling due to misoperation can be effectively prevented through the connection of the supporting beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a shield machine cutterhead lifting device provided in an embodiment of the present invention being installed on the cutterhead;

[0021] Figure 2 for Figure 1 Schematic diagram of A direction during lifting;

[0022] Figure 3 for Figure 2The cross-sectional view along the BB direction;

[0023] Figure 4 for Figure 1 Schematic diagram of A direction during excavation;

[0024] Figure 5 for Figure 4 The cross-sectional view along the CC direction;

[0025] Figure 6 for Figure 1 Schematic diagram of D direction during lifting;

[0026] Figure 7 for Figure 6 The cross-sectional view along the EE direction;

[0027] in:

[0028] Double suspension beam group 1, lug plate 11, support beam 12, connector 13, cover plate 14, fastener 15, cylinder 121, rib plate 122, panel 123, fixing part 124,

[0029] Turning lug group 2, first turning lug 21, first lug plate 211, second lug plate 212, connecting rib 213, fixing rib 214, side rib 215, lug 216, blocking block 2121, second turning lug 22, lifting hole 221, connecting hole 222, connecting part 23, blocking part 24, fixing part 25, adjusting part 26,

[0030] Shackle 3,

[0031] Shackle pin 4,

[0032] Split pin 5,

[0033] Hanging seat 6,

[0034] The blocking member 7, the blocking plate 71, the sealing member 72, the fastening portion 73,

[0035] Knife disc 8. DETAILED DESCRIPTION

[0036] 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.

[0037] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] The shield machine cutter head lifting device provided in the embodiment of the present application is shown in the attached manual. Figure 1 To Attachment Figure 7 As shown, it comprises: a double lifting beam group 1 and a turning lifting lug group 2. The double lifting beam group 1 and the turning lifting lug group 2 are respectively connected to different positions of the cutter disc 8, so as to lift the cutter disc 8.

[0039] The double beam group 1 includes ear plates 11 located on both sides, and a support beam 12 is provided between the two ear plates 11. The support beam 12 and the two ear plates 11 can be arranged in an integrated manner. The double beam group 1 can be specifically arranged in a hook shape, and its top is used to be connected to the shackle 3. The double beam group 1 is lifted by a steel wire rope on the shackle 3, and the bottom of the double beam group 1 can be detachably fixed to different sides of the hanging seat 6 of the cutter disc 8.

[0040] The hanger 6 is usually welded to the cutter disc 8, and the hanger 6 is provided with a pin hole. The present application utilizes the two hanging ear plates 11 of the double hanging beam group 1 and the pin hole of the hanger 6 to fix the hanger 6, so that the connection between the double hanging beam group 1 and the cutter disc 8 can be achieved.

[0041] In conjunction with the instruction manual Figure 2 and attached Figure 3 The two eye plates 11 are respectively located on both sides of the hanger 6. Each eye plate 11 and the hanger 6 can be fixed by a connecting member 13, which can be a connecting pin or other components. The eye plate 11 and the hanger 6 can be provided with coaxial holes, and the connecting member 13 and the hole are matched to realize the connection between the eye plate 11 and the hanger 6; in addition, the connecting member 13 can also be pulled out from the eye plate 11, so that the eye plate 11 and the hanger 6 can be detachably connected.

[0042] Of course, in order to prevent the connection member 13 from being separated from the eye plate 11 and the seat 6, a sealing plate 14 for shielding the connection member 13 can be provided on the outer side of the eye plate, and the sealing plate 14 is fixed to the eye plate 11 by a fastener 15 to prevent the connection member 13 from being separated from the eye plate 11 and the seat 6. The double beam group 1 includes the eye plates 11 on the left and right sides and a support beam 12 located between the two eye plates 11 for connecting and supporting; the double beam group 1 is connected to the seat 6 welded on the cutter head 8 by the connection member 13; in order to prevent the connection member 13 from being separated, after the double beam group 1 is connected to the fixed seat 6 welded on the cutter head 8 by the connection member 13, the sealing plate 14 is pressed by the fastener 15 on the outer side of the double beam group 1 to achieve blocking.

[0043] During use, first adjust the positions of the ear plate 11 and the hanger 6, then use the connecting piece 13 to connect the ear plate 11 and the hanger 6, and then use the sealing plate 14 to cover the outside of the connecting piece 13, and fix the connecting piece 13 to the outside of the ear plate 11 through the fastener 15, so that the sealing plate 14 can prevent the connecting piece 13 from detaching, ensuring that the connection between the ear plate 11 and the hanger 6 is firm and reliable.

[0044] The connecting piece 13 is passed through the pin holes on the double beam group 1 on one side and the fixed hanger 6 on the cutter disc 8 at the same time, and then the fastener 15 presses the sealing plate 14 to seal the connecting piece 13 to prevent the connecting piece 13 from falling outward due to loosening; the second connecting piece 13 is installed on the other side of the double beam group 1 in the same way as above, and the connecting piece 13 is sealed.

[0045] There are many ways to set the structure of the support beam 12, for example, it can be an I-beam or a rectangular beam, etc., and only a preferred embodiment is given in this article. The support beam 12 includes: a cylinder 121, a rib plate 122 and a panel 123. The cylinder 121 is horizontally arranged, and two panels 123 are respectively arranged at the two ends of the cylinder 121, and the rib plate 122 is arranged between the panel 123 and the cylinder 121. A panel 123 is respectively arranged at both ends of the cylinder 121, and the panel 123 is connected to the ear plate 11 through a fixing member 124, that is, the support beam 12 is connected to the ear plate 11 through the panel 123, and the panel 123 and the ear plate 11 are mutually attached, and both are arranged vertically, so that the contact area can be increased, and the connection between the ear plate 11 and the support beam 12 can be ensured to be reliable. The specific length of the cylinder 121 can be appropriately adjusted according to the width of the main beam of the cutter head 8, and its specific structural form is not limited, and this article will not expand it.

[0046] A shackle 3 may also be provided on the top of the panel 123. The panel 123 and the shackle 3 are detachably connected via a shackle pin 4, which is locked by a cotter pin 5, thereby fixing the double beam set 1 and the shackle 3. When the cutter head 8 is lifted, the two shackle pins 4 pass through the two lifting holes of the double beam set 1 and are locked by the cotter pin 5, and the shackle 3 is connected to the crane hook by a steel wire rope, thereby lifting the cutter head 8.

[0047] In conjunction with the instruction manual Figure 4 and attached Figure 5 The lifting device of the shield machine cutter head also includes a blocking piece 7, which is used to block the lifting hole of the suspension seat 6 when not lifting. That is, after the cutter head 8 is lifted, the double suspension beam group 1 and the turning ear group 2 are disassembled, and the blocking plate 71, the sealing member 72 and the fastening part 73 on the blocking piece 7 are sequentially installed on the fixed suspension seat 6 of the cutter head 8, thereby realizing effective protection of the lifting hole.

[0048] It can be seen that the structure of the double lifting beam group 1 is adopted to realize simultaneous lifting at two points, and the distance between the two lifting points can be adjusted, so that the double lifting beam group 1 has better force, and the stability of operations such as lifting and turning over is stronger. At the same time, the ear plates 11 on both sides are connected into a whole through the connection of the support beam 12, avoiding uneven force caused by lifting with two independent lifting points; at the same time, the risk of the lifting device falling due to misoperation is effectively prevented through the connection of the support beam 12.

[0049] The shape and structure of the double beam group 1 are introduced above. It should be pointed out that the structure of the above double beam group 1 is the most reasonable and reliable. However, this does not mean that the double beam group 1 can only be set up in the manner described above. The core of the double beam group 1 is: including a lug plate 11 and a support beam 12, and the lug plate 11 is used to fix the suspension seat 6 of the cutter disc 8. As for the specific setting method of the double beam group 1, different setting methods can be adopted according to actual needs.

[0050] The turning lug group 2 includes a first turning lug 21 and a second turning lug 22 which are detachably connected. The first turning lug 21 includes a first lug plate 211 and a second lug plate 212 which are connected to each other. The first lug plate 211 and the second lug plate 212 form a double-layer structure. There is a certain distance between the first lug plate 211 and the second lug plate 212. The distance can allow the second turning lug 22 to extend therein, as shown in the attached manual. Figure 7 shown.

[0051] An adjusting portion 26 is also provided between the first lifting ear plate 211 and the second lifting ear plate 212, through which the annular side wall of the cutter disc 8 is clamped; at the same time, the turning ear group 2 can adjust the radial clearance between the first turning ear 21, the second turning ear 22 and the cutter disc 8 through the adjusting portion 26, thereby ensuring that the turning ear group 2 can press the cutter disc 8, and there is no problem of looseness causing stress concentration points to occur.

[0052] Instructions attached Figure 7 Taking the shown orientation as an example, the right end of the adjustment portion 26 and the left end of the second turning ear 22 are close to each other to form a clamping force, thereby clamping the side wall of the cutter disc 8, so that the turning ear group 2 and the cutter disc 8 are fixed; in addition, since the adjustment portion 26 can move in the gap between the first ear plate 211 and the second ear plate 212, and the second turning ear 22 can also move in the gap between the first ear plate 211 and the second ear plate 212, the radial position of the turning ear group 2 relative to the cutter disc 8 can be adjusted by changing the position of the adjustment portion 26 and the second turning ear 22, thereby improving the wide applicability.

[0053] During the lifting process, the top of the double lifting beam group 1 is fixed to the shackle 3, the double lifting beam group 1 and the hanging seat 6 are fixed, and two turning ear groups 2 can be set. The turning ear group 2 is fixed to the bottom of the cutter disc 8, and the first turning ear 21 extends from the inner side of the cutter disc 8 to the outer side. The adjustment part 26 is located on the inner side of the cutter disc 8, and the second turning ear 22 extends from the outer side of the cutter disc 8 to the inner side into the gap between the first ear plate 211 and the second ear plate 212, and fixes the first turning ear 21 and the second turning ear 22. It can be seen that the symmetrical and detachable turning ear group 2 is arranged at the relative position of the double lifting beam group 1, so that the lifting and turning of the cutter disc 8 are safer and faster.

[0054] Regarding the lifting process of the cutter disc 8, the process of rotating the cutter disc 8 from a horizontal state to a vertical state is roughly as follows:

[0055] First, for one side of the suspension seat 6, the connecting piece 13 is passed through the pin holes on the double suspension beam group 1 and the fixed suspension seat 6 on the cutter head 8 at the same time, and then the sealing plate 14 is pressed by the fastener 15 to seal the connecting piece 13 to prevent the connecting piece 13 from falling outward due to loosening; for the other side of the suspension seat 6, the second connecting piece 13 is installed in the same manner as above and sealed;

[0056] Then, select two large symmetrical circular rings at the lower part of the cutter disc 8 (the position of the fixed hanger 6 on the cutter disc 8 is the upper part of the cutter disc 8) to install the turning lug group 2;

[0057] Specifically, the first turning ear 21 clamps the large ring of the cutter disc 8 from the inside of the large ring, and the second turning ear 22 is connected to the first turning ear 21 through the connecting portion 23 from the outside of the large ring of the cutter disc 8, and the blocking portion 24 is blocked by the fixing portion 25 to prevent the connecting portion 23 from falling. By adjusting the adjusting portion 26, the gap between the first turning ear 21, the second turning ear 22 and the turning hanging point of the large ring of the cutter disc 8 is ensured to ensure that the turning ear group 2 presses the cutter disc 8 in the radial direction.

[0058] Next, the lifting device simultaneously lifts the double lifting beam group 1 and the turning lifting eye group 2 on the same side, lifts the cutter head 8 to a suitable height in the air from the ground (i.e., a position where the cutter head 8 does not touch the ground when it is in a vertical state), and then slowly lowers the turning lifting eye group 2 until the cutter head 8 is in a vertical lifting state, thus completing the lifting of the cutter head 8 (the process of turning from horizontal to vertical);

[0059] The steps for turning over the knife disc 8 are as follows:

[0060] When the cutter disc 8 is in a vertical lifting state, the lifting equipment for lifting the turning lifting ear group 2 is adjusted to the opposite side of the lifting equipment for lifting the double lifting beam group 1, then the turning lifting ear group 2 is slowly lifted, and the double lifting beam group 1 is lowered until the cutter disc 8 is in a horizontal state to complete the turning of the cutter disc 8.

[0061] As mentioned above, after the lifting of the cutter disc 8 is completed, the double lifting beam group 1 and the turning ear group 2 are disassembled, and the sealing plate 71, the sealing member 72 and the fastening part 73 on the sealing member 7 are successively installed on the fixed hanging seat 6 of the cutter disc 8 to achieve effective protection of the pin hole; it can be seen that each turning ear group 2 is clamped and compacted in the radial direction within the turning ear group 2 by a group of adjusting parts 26 to effectively ensure uniform force.

[0062] A connecting rib 213 and a fixing rib 214 are provided between the first hanging ear plate 211 and the second hanging ear plate 212. The connecting rib 213 and the fixing rib 214 are provided with coaxial through holes. The adjusting portion 26 is penetrated by two through holes in sequence so that the end of the adjusting portion 26 abuts against the annular side wall of the cutter disc 8.

[0063] The first ear plate 211 and the second ear plate 212 are connected to each other through a connecting rib 213 and a fixing rib 214. In addition, side ribs 215 may be provided on both sides of the first ear plate 211 and the second ear plate 212, and ears 216 are provided on the outer sides of the side ribs 215. The connecting rib 213, the fixing rib 214 and the side rib 215 are located between the first ear plate 211 and the second ear plate 212 to play a supporting role.

[0064] A lifting hole 221 for installing the shackle 3 is provided on the second turning lifting ear 22, and a connecting hole 222 for connecting with the first turning lifting ear 21 is also provided on the second turning lifting ear 22. The first turning lifting ear 21 is provided with a mounting hole coaxial with the connecting hole 222, and a connecting part 23 is detachably connected between the connecting hole 222 and the mounting hole to realize the detachable connection between the first turning lifting ear 21 and the second turning lifting ear 22.

[0065] Sealing parts 24 are also provided on both sides of the first turning ear 21, and the sealing parts 24 block the mounting hole. A blocking block 2121 is also provided at one end of the mounting hole. The sealing part 24 is fixed by the fixing part 25 and the first turning ear 21 to prevent the connecting part 23 from falling off from the mounting hole. It can be seen that a blocking block 2121 is provided on one side of the mounting hole of the first ear plate 211 to prevent the connecting part 23 from falling off from this side when the turning ear group 2 is installed.

[0066] The connecting rib 213 and the fixing rib 214 are provided with concentric through holes. The through hole provided in the fixing rib 214 is specifically a threaded hole. The adjusting part 26 includes a screw rod. The screw rod passes through the connecting rib 213 and cooperates with the threaded hole to facilitate the installation of the adjusting part 26.

[0067] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0068] The above is a detailed introduction to the hoisting device of the shield machine cutterhead provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A hoisting device for a shield machine cutter head, characterized in that: include: A double hanging beam group, the double hanging beam group includes hanging ear plates located on both sides, a support beam is provided between the two hanging ear plates, and the two hanging ear plates are used to be detachably fixed to different sides of the hanging seat of the cutter disc respectively; A turning ear group, wherein the turning ear group comprises a first turning ear and a second turning ear that are detachably connected, wherein the first turning ear comprises a first ear plate and a second ear plate that are connected to each other, and a spacing is provided between the first ear plate and the second ear plate for the second turning ear to extend into; an adjusting portion is further provided between the first ear plate and the second ear plate, and the circular side wall of the cutter disc is clamped by the adjusting portion and the second turning ear; During the lifting process, the top of the double lifting beam group is fixed to the shackle, the double lifting beam group and the hanging seat are fixed, the turning lifting ear group is fixed to the bottom of the cutter disc, the first turning lifting ear extends from the inner side to the outer side of the cutter disc, the adjustment part is located on the inner side of the cutter disc, the second turning lifting ear extends from the outer side to the inner side of the cutter disc into the gap between the first lifting ear plate and the second lifting ear plate, and the first turning lifting ear and the second turning lifting ear are fixed so that the double lifting beam group and the turning lifting ear group are respectively fixed at different positions of the cutter disc.

2. The shield machine cutter head lifting device according to claim 1, characterized in that: A connecting rib and a fixing rib are provided between the first hanging ear plate and the second hanging ear plate, and the connecting rib and the fixing rib are provided with coaxial through holes, and the adjustment part is sequentially penetrated by two of the through holes so that the end of the adjustment part abuts against the annular side wall of the cutter disc.

3. The shield machine cutter head lifting device according to claim 2, characterized in that: The through hole provided in the fixing rib is specifically a threaded hole, and the adjusting part comprises a screw rod, which passes through the connecting rib and cooperates with the threaded hole.

4. The hoisting device for the cutter head of a shield machine according to claim 1, characterized in that: The second turning ear is provided with a connecting hole, the first turning ear is provided with a mounting hole coaxial with the connecting hole, and a connecting portion is detachably connected between the connecting hole and the mounting hole to achieve detachable connection between the first turning ear and the second turning ear.

5. The shield machine cutter head lifting device according to claim 4, characterized in that: A blocking portion is provided on both sides of the first turning ear to block the mounting hole. A blocking block is provided at one end of the mounting hole. The blocking portion is fixed by a fixing portion and the first turning ear to prevent the connecting portion from falling off from the mounting hole.

6. The shield machine cutter head lifting device according to any one of claims 1 to 5, characterized in that: It also includes a connecting piece that cooperates with the ear plate, and the connecting piece is used to fix the ear plate and the hanger. The outer side of the ear plate is also provided with a sealing plate that covers the connecting piece. The sealing plate is fixed to the ear plate by fasteners to prevent the connecting piece from detaching from the ear plate and the hanger.

7. The shield machine cutter head lifting device according to any one of claims 1 to 5, characterized in that: The support beam comprises: a cylinder, a rib plate and a panel. The cylinder is arranged horizontally, two panels are arranged at two ends of the cylinder respectively, and the rib plate is arranged between the panel and the cylinder.

8. The shield machine cutter head lifting device according to claim 7, characterized in that: The top of the panel is used to set a shackle, and the panel and the shackle are detachably connected through a shackle pin shaft, and the shackle pin shaft is locked by a cotter pin to fix the double suspension beam group and the shackle.

9. The shield machine cutter head lifting device according to any one of claims 1 to 5, characterized in that: It also includes a blocking piece, which is used to block the lifting hole of the lifting seat when not lifting.

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