Novel hob disassembling device

Abstract

The utility model belongs to the field of shield tunneling machines, relates to a hobbing cutter, and provides a novel hobbing cutter disassembling device which comprises a bottom frame assembly, a supporting sleeve, a rotating hinge support, a cutter disassembling machine oil cylinder and a rotating rod are arranged on the bottom frame assembly, and an upper ratchet wheel connecting cylinder synchronously rotating and moving with the rotating rod is arranged at the rotating center of the rotating rod. An upper ratchet wheel, a lower ratchet wheel, an ejector block and a base are arranged at the bottom of the upper ratchet wheel connecting cylinder, a plurality of positioning holes are formed in the bottom face of the lower ratchet wheel, and the base is arranged on the underframe assembly. The top block is used for supporting the hobbing cutter and clamping the cutter shaft, the rotating rod is driven by the two cutter disassembling machine oil cylinders, torque can be finally transmitted to the end cover, the end cover rotates in the thread direction, and when the telescopic stroke of the cutter disassembling machine oil cylinders is not enough, the hobbing cutter can be finally disassembled through repeated pushing. The disassembling device is reasonable in design, simple in structure, beneficial to improving disassembling efficiency, high in utilization rate and suitable for large-scale popularization.

Description

Technical Field

[0001] The utility model belongs to the field of shield machines, relates to hob cutters, and particularly relates to a novel hob cutter disassembly device. Background Technique

[0002] A shield machine is a special construction machinery for tunnel boring. Modern shield tunneling machines integrate optics, mechanics, electricity, hydraulics, sensing, and information technologies, and have functions such as excavating and cutting soil bodies, transporting soil residues, assembling tunnel linings, and measuring and guiding deviation correction.

[0003] Generally, a plurality of hob cutters are arranged on the cutter head of a shield machine in a certain regular distribution. As the main tunneling cutters, the hob cutters generally include cutter bodies, cutter rings, end covers, cutter shafts, floating seals, bearings, etc. Among them, the end covers are connected to the cutter shafts and cutter bodies by threads, and some end covers and cutter bodies are also provided with bolt / screw connectors. For removing the end covers from the hob cutters, the general disassembly method is manual disassembly. The tools used for disassembly include torque wrenches, with low disassembly efficiency and a significant reduction in the service life of the torque wrenches. Content of the Utility Model

[0004] In view of the above technical problems existing in the disassembly and assembly of hob cutters, the utility model proposes a novel hob cutter disassembly device with reasonable design, simple structure, which is conducive to improving the disassembly efficiency and has a high utilization rate.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is that a novel hob cutter disassembly device provided by the utility model includes a chassis assembly. Two support sleeves are arranged at the diagonal positions on the top of the chassis assembly. A rotary hinge support is arranged on the top of the support sleeve. A cutter removal oil cylinder is arranged on the rotary hinge support. The telescopic ends of the two cutter removal oil cylinders extend along the length direction of the chassis assembly. The extending directions of the telescopic ends of the two cutter removal oil cylinders are opposite and are hinged with a rotating rod. A upper ratchet connecting cylinder that rotates synchronously with it is arranged at the rotation center of the rotating rod. A upper ratchet is arranged at the bottom of the upper ratchet connecting cylinder and is in transmission connection with it. A lower ratchet that meshes with the upper ratchet is arranged below the upper ratchet. A plurality of positioning holes are arranged on the bottom surface of the lower ratchet. A top block for supporting the hob cutter is arranged below the lower ratchet. The top block is arranged on a base, and the base is arranged on the chassis assembly.

[0006] Preferably, the chassis assembly includes a plurality of horizontal square tubes, vertical square tubes, and diagonal square tubes. The plurality of horizontal square tubes and the plurality of vertical square tubes are welded into a rectangular frame system. The diagonal square tubes are arranged on the diagonals between the horizontal square tubes and the vertical square tubes.

[0007] Preferably, the support sleeve includes insertion holes that cooperate with the horizontal square tubes, vertical square tubes, and diagonal square tubes. A central hole for installing the rotary hinge support is arranged at the center of the support sleeve.

[0008] Preferably, the rotary hinge support includes a cylindrical section that fits into the central hole. A ring groove is provided on the side surface of the cylindrical section, and the ring groove is in rotational fit with an axial positioning pin provided on the side surface of the support sleeve. A pair of vertical plate sections are provided at the top of the cylindrical section, and the vertical plate sections are used to mount the hinge pin of the knife-disassembling oil cylinder and the rotary hinge support.

[0009] Preferably, a square hole is provided inside the upper ratchet connecting cylinder, and a cylindrical transition groove is provided on the edge of the square hole.

[0010] Preferably, the upper ratchet includes an upper ratchet body, and a square tenon head is provided at the bottom of the upper ratchet body.

[0011] Preferably, a tool shaft hole that fits with the tool shaft of the hob is provided at the center of the top block, and a mounting hole for mounting the top block is provided on the base.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0013] 1. A novel hob disassembly device provided by the present utility model. The top block is used to support the hob and clamp the tool shaft. The positioning hole of the lower ratchet is used to cooperate with the screw on the end cover or the pin inserted into the empty screw hole. The lower ratchet is in transmission cooperation with the upper ratchet and the upper ratchet connecting cylinder. Two knife-disassembling oil cylinders are used to drive the rotating rod, and finally the torque can be transmitted to the end cover. The end cover rotates along the thread direction. When the telescopic stroke of the knife-disassembling oil cylinder is insufficient, the hob can be finally disassembled by repeated pushing. This device is reasonably designed, has a simple structure, is beneficial to improving the disassembly efficiency and has a high utilization rate, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 An isometric view of a novel hob disassembly device provided for the embodiment;

[0016] Figure 2 A front view of a novel hob disassembly device provided for the embodiment;

[0017] Figure 3 A schematic diagram of the rotary hinge support provided for the embodiment;

[0018] Figure 4An exploded view of an upper ratchet connecting cylinder, an upper ratchet, a lower ratchet and a top block provided in an embodiment;

[0019] Figure 5 A top view of a top block provided for an embodiment;

[0020] In the above figures, 1. chassis assembly; 1a. horizontal square tube; 1b. vertical square tube; 1c. oblique square tube; 2. support sleeve; 3. rotary hinge; 31. columnar section; 32. ring groove; 33. vertical plate section; 4. cutter dismantling machine cylinder; 5. rotating rod; 6. upper ratchet connecting tube; 61. square hole; 62. columnar transition groove; 7. upper ratchet; 71. upper ratchet body; 72. square tenon; 8. lower ratchet; 81. positioning hole; 9. top block; 91. cutter shaft hole; 10. base; 11. axial positioning pin; 12. pin shaft. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Examples, such as Figures 1 to 5 As shown, a new type of roller cutter disassembling device provided by the utility model comprises a chassis assembly 1, two support sleeves 2 are arranged at the top diagonal position of the chassis assembly 1, a rotating hinge 3 is arranged on the top of the support sleeve 2, a roller cutter disassembly machine cylinder 4 is arranged on the rotating hinge 3, the supply end of the roller cutter disassembly machine cylinder 4 is supplied with hydraulic oil through a hydraulic station, the telescopic ends of the two roller cutter disassembly machine cylinders 4 extend along the length direction of the chassis assembly 1, the extension directions of the telescopic ends of the two roller cutter disassembly machine cylinders 4 are opposite and a rotating rod 5 is hingedly arranged, an upper ratchet connecting cylinder 6 which rotates synchronously with the rotating center of the rotating rod 5 is arranged, an upper ratchet 7 which is transmission-connected to the upper ratchet connecting cylinder 6 is arranged at the bottom of the upper ratchet connecting cylinder 6, a lower ratchet 8 which meshes with the upper ratchet 7 is arranged below the upper ratchet 7, a plurality of positioning holes 81 are arranged on the bottom surface of the lower ratchet 8, a top block 9 for supporting the roller cutter is arranged below the lower ratchet 8, the top block 9 is arranged on a base 10, and the base 10 is arranged on the chassis assembly 1.

[0024] In this device, the chassis assembly 1 is the installation foundation for other structures. In particular, it provides a reasonable lever arm length for the two support sleeves 2 and forms a torsion link mechanism with the rotating rod 5. Specifically, the top block 9 is used to support the hob and clamp the cutter shaft. The positioning hole 81 of the lower ratchet 8 is used to cooperate with the screw on the end cover or the pin inserted into the empty screw hole. The lower ratchet 8 meshes with the upper ratchet 7. The upper ratchet 7 is in transmission cooperation with the upper ratchet connecting cylinder 6 and maintains a certain vertical margin. The two cutter removal oil cylinders 4 are used to drive the rotating rod 5. During the telescopic process of the cutter removal oil cylinder 4, since the vertical distance between its telescopic end and the center of the rotating rod 5 changes in length, the rotary hinge support 3 can meet the telescopic operation requirements of the cutter removal oil cylinder 4 by rotating. The cutter removal oil cylinder 4 can finally transmit the torque to the end cover through telescoping, and the end cover rotates along the thread direction. When the telescopic stroke of the cutter removal oil cylinder 4 is insufficient, by rotating the rotating rod 5 in the reverse direction, the upper ratchet 7 generates a certain height change, making it reverse. Continuing to drive the rotating rod 5 forward and making the upper ratchet 7 continue to mesh with the lower ratchet 8 can realize the rotation of the end cover. In this way, by repeatedly pushing the cutter removal oil cylinder 4, the disassembly of the hob can be finally realized. The top cover and the lower ratchet 8 can be selectively replaced according to the specific hob model specifications to adapt to different hob disassembly requirements. This device is reasonably designed, has a simple structure, is conducive to improving the disassembly efficiency and has a high utilization rate.

[0025] To improve the structural strength of the chassis assembly 1, all the rod-shaped structural elements of the chassis assembly 1 provided by the present utility model adopt square tubes, specifically including a plurality of horizontal square tubes 1a, vertical square tubes 1b and diagonal square tubes 1c. The plurality of horizontal square tubes 1a and the plurality of vertical square tubes 1b are welded into a rectangular frame system, and the diagonal square tubes 1c are arranged on the diagonals between the horizontal square tubes 1a and the vertical square tubes 1b. The horizontal square tubes 1a, the vertical square tubes 1b and the diagonal square tubes 1c are welded at the connection positions to ensure the structural strength of the entire chassis assembly 1, and a space for installing the rotating rod 5, the upper ratchet 7, the lower ratchet 8 and the top block 9 is automatically left at the middle position of the rectangular frame system.

[0026] To improve the practicability of the support sleeve 2, in cooperation with the chassis assembly 1, the support sleeve 2 provided by the present utility model includes insertion holes that cooperate with the horizontal square tubes 1a, the vertical square tubes 1b and the diagonal square tubes 1c. A central hole for installing the rotary hinge support 3 is provided at the center of the support sleeve 2. After the insertion holes of the support sleeve 2 in different directions are inserted into the horizontal square tubes 1a, the vertical square tubes 1b and the diagonal square tubes 1c, a stable support foundation can be provided for the support sleeve 2.

[0027] In order to ensure the working performance of the cutter dismantling machine oil cylinder 4, the rotary hinge support 3 provided by the utility model includes a cylindrical section 31 matched with the center hole, and the side of the cylindrical section 31 is provided with an annular groove 32, and the annular groove 32 is rotatably matched with the axial positioning pin 11 provided on the side of the support sleeve 2, and a pair of vertical plate sections 33 are provided on the top of the cylindrical section 31, and the vertical plate sections 33 are used to install the pin 12 of the hinged cutter dismantling machine oil cylinder 4 and the rotary hinge support 3. Among them, the pin 12 is used to ensure that the cutter dismantling machine oil cylinder 4 can rotate around the center of the pin 12, and if the cutter dismantling machine oil cylinder 4 has a tendency to swing in the horizontal direction, the cylindrical section 31 can rotate around the matching surface of the axial positioning pin and the annular groove 32, so that the cutter dismantling machine oil cylinder 4 can effectively drive the rotating rod 5 to rotate within a limited range, and then complete the subsequent dismantling action.

[0028] In order to improve the utilization rate of the device, the upper ratchet connecting tube 6 is provided with a square hole 61 inside, and the edge of the square hole 61 is provided with a cylindrical transition groove 62. The upper ratchet 7 includes an upper ratchet body 71, and the bottom of the upper ratchet body 71 is provided with a square tenon 72. The cylindrical transition groove 62 can reduce the strain between the square tenon 72 and the square hole 61, and the height of the square tenon 72 is less than the depth of the square hole 61, so as to leave a certain margin for the upper ratchet 7 to move up and down. Therefore, when the telescopic stroke of the cutter dismantling machine cylinder 4 is insufficient, the upper ratchet 7 is reversed along the meshing surface with the lower ratchet 8 by rotating the rotating rod 5 in the reverse direction. During the reversing process, the upper ratchet 7 first rises and then falls until it retreats a certain circumference. The rotating rod 5 is continuously driven in the forward direction, and the upper ratchet 7 is meshed with the lower ratchet 8 at a new position to continue to rotate the end cover, thereby completing the dismantling of the hob.

[0029] Furthermore, the center of the top block 9 provided by the utility model is provided with a shank hole 91 that matches the shank of the hob. In order to reduce the damage to the shank, the edges of the shank hole 91 are rounded, and the base 10 is provided with a mounting hole for mounting the top block 9. In this way, the top block 9 that matches the hob to be disassembled is first selected, and then the top block 9 is installed in the mounting hole, and the upper ratchet 7 and the lower ratchet 8 can also be flexibly replaced, thereby meeting the needs of disassembling different hobs.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A novel hob disassembling device, characterized in that: The invention comprises a chassis assembly, wherein two support sleeves are provided at the top diagonal position of the chassis assembly, a rotating hinge is provided at the top of the support sleeves, a knife remover oil cylinder is provided on the rotating hinge, the telescopic ends of the two knife remover oil cylinders extend along the length direction of the chassis assembly, the extension directions of the telescopic ends of the two knife remover oil cylinders are opposite and a rotating rod is hingedly provided, an upper ratchet connecting cylinder that rotates synchronously with the rotating rod is provided at the rotation center of the rotating rod, an upper ratchet that is transmission-connected to the upper ratchet connecting cylinder is provided at the bottom of the upper ratchet connecting cylinder, a lower ratchet that meshes with the upper ratchet is provided below the upper ratchet, a plurality of positioning holes are provided on the bottom surface of the lower ratchet, a top block for supporting the roller is provided below the lower ratchet, the top block is provided on the base, and the base is provided on the chassis assembly.

2. A novel roller cutter disassembling device according to claim 1, characterized in that: The chassis assembly comprises a plurality of horizontal square tubes, vertical square tubes and oblique square tubes. The plurality of horizontal square tubes and the plurality of vertical square tubes are welded into a rectangular frame system. The oblique square tubes are arranged on the diagonal line between the horizontal square tubes and the vertical square tubes.

3. A novel roller cutter disassembling device according to claim 2, characterized in that: The support sleeve comprises a plug-in hole matched with the horizontal square tube, the vertical square tube and the oblique square tube, and a central hole for installing a rotary hinge is arranged at the center of the support sleeve.

4. A novel roller cutter disassembling device according to claim 3, characterized in that: The rotary hinge includes a cylindrical section that cooperates with the center hole, and a ring groove is provided on the side of the cylindrical section. The ring groove is rotatably matched with an axial positioning pin provided on the side of the support sleeve. A pair of vertical plate sections are provided on the top of the cylindrical section, and the vertical plate sections are used to install the pin shaft of the articulated tool removal machine cylinder and the rotary hinge.

5. A novel roller cutter disassembling device according to claim 1 or 4, characterized in that: A square hole is arranged inside the upper ratchet connecting cylinder, and a cylindrical transition groove is arranged on the edge of the square hole.

6. A novel roller cutter disassembling device according to claim 5, characterized in that: The upper ratchet comprises an upper ratchet body, and a square tenon is arranged at the bottom of the upper ratchet body.

7. A novel roller cutter disassembling device according to claim 6, characterized in that: A cutter shaft hole matching with the cutter shaft of the hob is arranged at the center of the top block, and a mounting hole for mounting the top block is arranged on the base.

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