Fixing tool device for milling and grinding blade coating

Abstract

The utility model relates to the related technical field of shield tunneling machines, in particular to a fixing tool device for milling and grinding a blade coating, which comprises a base used for supporting a main body, the top of the base is fixedly provided with a shell, and the top of the shell is rotatably connected with a rotary table. The rotary table can be driven by the driving part to rotate along the inner wall of the shell, so that the hob bodies mounted at the top of the rotary table can be driven to rotate, the multiple sets of hob bodies mounted at the top of the rotary table can independently rotate through the rotary table, and the situation that the equipment only can coat the outer sides of hobs when coating the hob bodies, and the coating efficiency is improved is avoided. According to the coating device for the hobbing cutter, due to the fact that the hobbing cutter cannot be evenly coated in the coating process, a limiting rod, a first mounting plate, a second mounting plate and a clamping piece are arranged to be used in cooperation, the hobbing cutter body can be conveniently fixed, meanwhile, the phenomenon that the hobbing cutter body is loosened after being used for a long time can be avoided, and the problems in the prior art are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel boring machines, and in particular to a fixing fixture for milling blade coating. Background Technology

[0002] The cutterhead is a key cutting tool in the tunnel boring machine (TBM) excavation process. It is mainly used to break rocks or hard strata for tunneling and is an indispensable component in tunnels and underground engineering. The cutterhead is mainly composed of cutter ring, cutter body, cutter shaft, bearing, sealing device and floating ring. Under the thrust of the TBM, the cutterhead presses tightly against the rock surface, causing cracks in the rock. The cutterhead rotates with the cutterhead, applying shear force to the rock and promoting crack propagation. The cutterhead rotates on its own axis and revolves around the cutterhead, forming a continuous rolling action, which accelerates rock breaking.

[0003] As a key consumable for tunnel boring machines (TBMs), the service life of cutterheads directly affects construction efficiency and cost. The coating of TBM cutterheads needs to achieve high wear resistance and corrosion resistance under complex working conditions, and the coating quality directly affects the life of the cutterheads. The fixed tooling device for milling cutter coating can ensure that the cutterheads maintain a stable position and posture during the coating process, avoiding problems such as uneven coating thickness and defects caused by cutterhead movement or shaking, thereby ensuring coating uniformity and bonding strength.

[0004] In existing technologies, bolts are typically used to fix the shield tunnel cutterheads during coating. However, under long-term vibration, the bolts can loosen, increasing the gap between the cutterhead bearing and the cutter box. This leads to increased cutterhead vibration during coating, resulting in uneven coating thickness and affecting coating quality. Furthermore, the single-point fixing design of bolted connections causes stress concentration in localized areas, accelerating wear and deformation of the contact surface. Replacing cutters with bolted connections requires disassembling a large number of bolts, which is cumbersome and time-consuming, impacting construction progress. Additionally, the bolted fixing method means that coating can only be applied to the outer surface of the cutterhead, resulting in uneven coating. Utility Model Content

[0005] The purpose of this invention is to provide a fixture for milling blade coating to solve the problems mentioned in the background art.

[0006] The technical solution adopted in this utility model is:

[0007] A fixture for fixing the coating of milling inserts includes:

[0008] A base is used to support the main body. A housing is fixed to the top of the base. A turntable is rotatably connected to the top of the housing. A driving component is provided inside the housing.

[0009] Six sets of rotating truncated cones are all set on the top of the turntable, and vertically installed limiting rods are fixed on the outer side of the rotating truncated cones;

[0010] A first mounting plate is disposed on the top of the rotating frustum. Several sets of vertically mounted hobbing cutter bodies are inserted into the inner wall of the first mounting plate, and a second mounting plate is disposed on the top of the hobbing cutter bodies.

[0011] Multiple sets of snap-fit ​​components are respectively disposed on the outer side of the first mounting plate and the second mounting plate. Each snap-fit ​​component includes a fixing block that is fixed to the outer side of the first mounting plate and the second mounting plate respectively. The inner wall of the fixing block is threaded with a fixing bolt.

[0012] Optionally, the driving component includes a motor installed inside the housing, with a rotating rod fixed to the output end of the motor, a first bevel gear fixed to the outer side of the rotating rod, and a second bevel gear fixed to the bottom of the turntable, with the outer side of the second bevel gear meshing with the outer side of the first bevel gear.

[0013] Optionally, a vertically arranged limiting plate is fixed to the inner wall of the housing, and one side of the limiting plate is rotatably connected to the end of the rotating rod away from the motor.

[0014] Optionally, the inner wall of the housing is provided with two sets of filter plates, the outer side of the housing is fixed with a limit frame, and the inner wall of the limit frame is slidably connected with a sealing plate.

[0015] Optionally, the inner wall of the rotating frustum is threaded with a horizontally arranged threaded rod, and a turntable is fixed to the end of the threaded rod away from the rotating frustum.

[0016] Optionally, a sleeve is slidably connected to the outer side of the limiting rod, and a limiting plate is fixed to the end of the sleeve away from the limiting rod.

[0017] Optionally, a threaded joint is fixed to one end of the sleeve near the limiting rod, and a snap-fit ​​block is threadedly connected to the outer side of the threaded joint.

[0018] Optionally, a vertically arranged spring is fixed to the inner wall of the limiting plate, a pressure block is fixed to the end of the spring away from the limiting plate, and two sets of vertically arranged sliding rods are fixed to the top of the pressure block, with the outer side of the sliding rods slidably connected to the inner wall of the limiting plate.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] The housing provides protection for the internal drive components, which in turn rotate the turntable along the inner wall of the housing, thereby rotating the hob body mounted on top. The rotating platform allows multiple hob bodies mounted on top to rotate independently, preventing uneven coating that could only be applied to the outer side of the hob during coating. The use of a limit rod, a first mounting plate, a second mounting plate, and a snap-fit ​​device facilitates the fixation of the hob body and prevents it from loosening over time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the main body structure in this application;

[0023] Figure 2 This is a schematic diagram of the driving component structure in this application;

[0024] Figure 3 This is a schematic diagram of the hobbing cutter structure in this application;

[0025] Figure 4 This is a schematic diagram of the fastener structure in this application.

[0026] Figure label:

[0027] 1. Base; 2. Housing; 3. Turntable;

[0028] 4. Driving component; 41. Motor; 42. Rotating rod; 43. First bevel gear; 44. Second bevel gear;

[0029] 5. Rotating frustum; 6. Limiting rod; 7. First mounting plate; 8. Hob body; 9. Second mounting plate; 10. Snap-fit ​​component; 101. Fixing block; 102. Fixing bolt;

[0030] 11. Limiting plate; 12. Filter plate; 13. Limiting frame; 14. Sealing plate; 15. Threaded rod; 16. Sleeve; 17. Limiting disc; 18. Threaded joint; 19. Snap-fit ​​block; 20. Spring; 21. Pressure block; 22. Slide rod. Detailed Implementation

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Given that current technologies typically use bolts to fix the cutterheads during shield tunneling cutterhead coating, bolted connections can loosen under long-term vibration. This increases the gap between the cutterhead bearing and the cutter box, leading to increased cutterhead vibration during coating and uneven coating thickness, thus affecting coating quality. Furthermore, the single-point fixing design of bolted connections causes stress concentration in localized areas, accelerating wear and deformation of the contact surface. Replacing cutterheads with bolted connections requires disassembling numerous bolts, which is cumbersome and time-consuming, impacting construction progress. Additionally, the bolted fixing method means that the cutterhead can only be coated on the outer surface, preventing a comprehensive and uniform coating, resulting in uneven coating during the process.

[0034] like Figure 1-4 As shown, this utility model embodiment provides a fixing fixture for milling blade coating, including a base 1 for supporting the main body, a housing 2 fixed to the top of the base 1, a turntable 3 rotatably connected to the top of the housing 2, and a driving component 4 disposed inside the housing 2.

[0035] Six sets of rotating truncated cones 5 are all set on the top of the turntable 3, and vertically installed limit rods 6 are fixed on the outer side of the rotating truncated cones 5.

[0036] The first mounting plate 7 is set on the top of the rotating frustum 5. Several sets of vertically installed hob bodies 8 are inserted into the inner wall of the first mounting plate 7. The top of the hob body 8 is provided with a second mounting plate 9.

[0037] Multiple sets of snap-fit ​​components 10 are respectively disposed on the outer side of the first mounting plate 7 and the second mounting plate 9. Each snap-fit ​​component 10 includes a fixing block 101 that is fixed to the outer side of the first mounting plate 7 and the second mounting plate 9 respectively. The inner wall of the fixing block 101 is threaded with a fixing bolt 102.

[0038] In use, since the main body is located on top of the base 1, the base 1 can support the main body. The housing 2 can protect the drive component 4 located inside it. Since the turntable 3 rotates on top of the housing 2, it can rotate along the inner wall of the housing 2 under the drive of the drive component 4, thereby driving the hob body 8 mounted on top of it to rotate, which facilitates the coating work on the hob body 8. Since the rotating platform 5 is located on top of the turntable 3, and since the hob body 8 is mounted on the first mounting plate 7 on the top of the rotating platform 5, the rotating platform 5 can drive the hob body 8 to rotate, thereby enabling the hob body 8 to be fully coated. This avoids the situation where only the outer side of the hob body 8 can be coated, resulting in uneven coating of the hob body 8 during the coating process. Since both the first mounting plate 7 and the second mounting plate 9 slide on the fixed Located outside the limiting rod 6 on the outer side of the rotating frustum 5, the second mounting plate 9 can be fixed to the hob body 8 installed on the inner wall of the first mounting plate 7 when it is moved along the limiting rod 6 towards the first mounting plate 7, thus preventing the hob body 8 from shaking during the coating process. Since the fixing block 101 is fixed to the outer side of the first mounting plate 7 and the second mounting plate 9 respectively, and the inner wall of the fixing block 101 is threaded with fixing bolts 102, tightening the fixing bolts 102 can fix the first mounting plate 7 and the second mounting plate 9, thereby completing the purpose of installing the hob body 8. At the same time, it can avoid stress concentration in local areas, thus accelerating the wear and deformation of the contact surface. It should be noted that the inner walls of the first mounting plate 7 and the second mounting plate 9 are both provided with through holes for inserting the hob body 8, and the through holes on the inner walls of the first mounting plate 7 and the second mounting plate 9 are designed symmetrically.

[0039] Specifically, the drive component 4 includes a motor 41 installed inside the housing 2. A rotating rod 42 is fixed to the output end of the motor 41. A first bevel gear 43 is fixed to the outside of the rotating rod 42. A second bevel gear 44 is fixed to the bottom of the turntable 3, and the outside of the second bevel gear 44 meshes with the outside of the first bevel gear 43.

[0040] When the hob body 8 needs to be rotated, the motor 41 is started first. The motor 41 drives the rotating rod 42 fixed at its output end to rotate. The rotating rod 42 can drive the first bevel gear 43 fixed on its outer side to rotate. The first bevel gear 43 drives the second bevel gear 44 meshed on its outer side to rotate. Since the second bevel gear 44 is fixedly connected to the bottom of the turntable 3, the second bevel gear 44 can drive the turntable 3 to rotate along the inner wall of the housing 2.

[0041] Specifically, a vertically arranged limiting plate 11 is fixed to the inner wall of the housing 2, and one side of the limiting plate 11 is rotatably connected to the end of the rotating rod 42 away from the motor 41.

[0042] Since the limiting plate 11 is fixed to the inner wall of the housing 2, and since one side of the limiting plate 11 is rotatably connected to one end of the rotating rod 42, the limiting plate 11 can limit the rotating rod 42 when it rotates.

[0043] Specifically, the inner wall of the housing 2 is provided with two sets of filter plates 12, and the outer side of the housing 2 is fixed with a limit frame 13. The inner wall of the limit frame 13 is slidably connected with a sealing plate 14.

[0044] Since the filter plate 12 is installed at the vent of the housing 2, it can prevent dust from entering the interior of the housing 2 through the vent, thereby avoiding dust entering the interior of the housing 2 and affecting the normal use of the internal structure of the drive component 4.

[0045] Specifically, the inner wall of the rotating frustum 5 is threaded with a horizontally arranged threaded rod 15, and a turntable is fixed to the end of the threaded rod 15 away from the rotating frustum 5.

[0046] Since the inner wall of the rotating frustum 5 is threaded with a threaded rod 15, when the turntable fixed at one end of the threaded rod 15 is rotated, the threaded rod 15 can be driven to insert into the rotating frustum 5. It should be noted that the rotating frustum 5 is composed of a base and a rotating seat, wherein the rotating seat is sleeved on the outside of the base, and the base and the turntable 3 are fixedly connected. Therefore, when the threaded rod 15 is inserted into the rotating frustum 5, it can pass through the rotating seat and clamp the base inside, thereby fixing the rotating frustum 5, and then fixing the hob body 8 installed on the top of the rotating frustum 5.

[0047] Specifically, a sleeve 16 is slidably connected to the outer side of the limiting rod 6, and a limiting plate 17 is fixed to the end of the sleeve 16 away from the limiting rod 6.

[0048] Since the sleeve 16 slides on the inner wall of the limiting rod 6, and one end of the sleeve 16 is fixed with the limiting plate 17, when the limiting plate 17 is moved downward, the sleeve 16 can be moved along the outer side of the limiting rod 6, thereby limiting the limiting plate 17.

[0049] Specifically, a threaded connector 18 is fixed to one end of the sleeve 16 near the limiting rod 6, and a snap-fit ​​block 19 is threadedly connected to the outer side of the threaded connector 18.

[0050] Since the threaded connector 18 is fixed at one end of the sleeve 16, and the outer side of the threaded connector 18 is threaded with a snap block 19, and the threaded connector 18 is tapered and has a snap groove on its inner wall, when the snap block 19 is tightened, the threaded connector 18 can be driven to retract inward along the snap groove, thereby fixing the sleeve 16 to the outside of the limit rod 6.

[0051] Specifically, a vertically arranged spring 20 is fixed to the inner wall of the limiting plate 17. A pressure block 21 is fixed to the end of the spring 20 away from the limiting plate 17. Two sets of vertically arranged sliding rods 22 are fixed to the top of the pressure block 21, and the outer side of the sliding rods 22 is slidably connected to the inner wall of the limiting plate 17.

[0052] The spring 20 is designed to press the pressure block 21 against the second mounting plate 9 by means of a reverse force. Since the slide rod 22 is fixed to the top of the pressure block 21 and the outer side of the slide rod 22 is slidably connected to the inner wall of the limiting plate 17, the slide rod 22 can limit the pressure block 21 fixed at the bottom of the spring 20. Furthermore, since the spring 20 is installed at the bottom of the limiting plate 17, the position of the pressure block 21 fixed at the bottom of the spring 20 can be adjusted when the position of the limiting plate 17 is moved.

[0053] When coating the hob body 8, firstly, insert the fixing blocks 101 fixed on both sides of the first mounting plate 7 into the limiting rod 6. Then, insert multiple sets of hob bodies 8 into the through holes opened on the inner wall of the first mounting plate 7 in sequence. Next, install the second mounting plate 9 on the top of the hob body 8 in the same way as the first mounting plate 7. Then, tighten the fixing bolts 102 that are threaded to the inner wall of the fixing blocks 101 on the outer side of the first mounting plate 7 and the second mounting plate 9. Install the first mounting plate 7 and the second mounting plate 9 on the outer side of the limiting rod 6, thereby fixing the hob body 8 installed between the first mounting plate 7 and the second mounting plate 9. Then, insert the sleeve 16 together with the limiting plate 17 on the outer side of the limiting rod 6 until the pressure block 21 at the bottom of the spring 20 at the bottom of the limiting plate 17 is moved to the top position of the second mounting plate 9. Then, tighten the snap-fit ​​block 19 on the outer side of the threaded joint 18 fixed at one end of the sleeve 16. Since the threaded joint 18 is tapered and has a slot on its inner wall, the snap-fit ​​block 19 is tightened. Therefore, when the locking block 19 is tightened, the threaded joint 18 can be driven to retract inward along the slot, thereby fixing the sleeve 16 to the outside of the limiting rod 6. At this time, the pressure block 21 can press the second mounting plate 9 through the reverse action of the spring 20. When coating the hob body 8, the motor 41 is started first. The motor 41 drives the rotating rod 42 fixed at its output end to rotate. The rotating rod 42 can drive the first bevel gear 43 fixed on its outside to rotate. The first bevel gear 43 drives the second bevel gear 44 meshed on its outside to rotate. Since the second bevel gear 44 is fixedly connected to the bottom of the turntable 3, the second bevel gear 44 can drive the turntable 3 to rotate along the inner wall of the housing 2. Since multiple sets of rotating pedestals 5 with hob bodies 8 are installed on the top of the turntable 3, when the turntable 3 drives the hob body 8 to rotate, the hob bodies 8 installed on the multiple sets of rotating pedestals 5 can rotate independently, so that the hob body 8 can be coated evenly during coating.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixture for fixing the coating of milling cutter blades, characterized in that, include: A base (1) is used to support the main body. A housing (2) is fixed to the top of the base (1). A turntable (3) is rotatably connected to the top of the housing (2). A drive component (4) is provided inside the housing (2). Six sets of rotating truncated cones (5) are all set on the top of the turntable (3). A vertically installed limit rod (6) is fixed to the outside of the rotating truncated cones (5). A first mounting plate (7) is set on the top of the rotating truncated cones (5). Several sets of vertically installed hobbing cutter bodies (8) are inserted into the inner wall of the first mounting plate (7). A second mounting plate (9) is set on the top of the hobbing cutter bodies (8). Multiple sets of snap-fit ​​parts (10) are respectively set on the outside of the first mounting plate (7) and the second mounting plate (9). The snap-fit ​​parts (10) include fixing blocks (101) respectively fixed to the outside of the first mounting plate (7) and the second mounting plate (9). The inner wall of the fixing block (101) is threaded with fixing bolts (102).

2. The fixture for fixing the coating of milling cutters according to claim 1, characterized in that, The drive unit (4) includes a motor (41) installed inside the housing (2). A rotating rod (42) is fixed to the output end of the motor (41). A first bevel gear (43) is fixed to the outside of the rotating rod (42). A second bevel gear (44) is fixed to the bottom of the turntable (3), and the outside of the second bevel gear (44) meshes with the outside of the first bevel gear (43).

3. The fixture for fixing the coating of milling cutters according to claim 2, characterized in that, The inner wall of the housing (2) is fixed with a vertically arranged limiting plate (11), and one side of the limiting plate (11) is rotatably connected to the end of the rotating rod (42) away from the motor (41).

4. The fixture for fixing the coating of milling cutters according to claim 1, characterized in that, The inner wall of the housing (2) is provided with two sets of filter plates (12), and a limit frame (13) is fixed on the outer side of the housing (2). A sealing plate (14) is slidably connected to the inner wall of the limit frame (13).

5. The fixture for fixing the coating of milling cutters according to claim 1, characterized in that, The inner wall of the rotating frustum (5) is threaded with a horizontally arranged threaded rod (15), and a turntable is fixed at the end of the threaded rod (15) away from the rotating frustum (5).

6. The fixture for fixing the coating of milling cutters according to claim 1, characterized in that, A sleeve (16) is slidably connected to the outside of the limiting rod (6), and a limiting plate (17) is fixed at one end of the sleeve (16) away from the limiting rod (6).

7. The fixture for fixing the coating of milling cutters according to claim 6, characterized in that, The sleeve (16) is fixed with a threaded connector (18) at one end near the limiting rod (6), and a snap-fit ​​block (19) is threadedly connected to the outer side of the threaded connector (18).

8. The fixture for fixing the coating of milling inserts according to claim 7, characterized in that, The inner wall of the limiting plate (17) is fixed with a vertically arranged spring (20), and a pressure block (21) is fixed at the end of the spring (20) away from the limiting plate (17). The top of the pressure block (21) is fixed with two sets of vertically arranged sliding rods (22), and the outer side of the sliding rods (22) is slidably connected to the inner wall of the limiting plate (17).

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