Hobbing cutter replacing, disassembling and assembling tool applied to shield tunneling machine

Abstract

The utility model belongs to the technical field of shield tunneling machine hob dismounting and mounting equipment, and particularly relates to a hob replacing dismounting and mounting tool applied to a shield tunneling machine. According to the technical scheme, the tool changing device comprises a tool changing bracket and a dismounting tool, the dismounting tool comprises a connecting rod, a mounting base is arranged at one end of the connecting rod, a mounting groove matched with a hob body in shape is formed in the mounting base, and a handle is arranged at the end, away from the mounting base, of the connecting rod; a groove facilitating sliding of the hob body is formed in the tool changing bracket, the position of the tool changing bracket corresponds to the position of the hob body, and the tool changing bracket is preliminarily positioned and installed through a first supporting block and a second supporting block and then is further positioned and installed through a jacking lug plate and a second bolt on the tool changing bracket. According to the utility model, the disassembly of an abraded hob and the replacement and installation of a new hob in the tunneling process of the shield tunneling machine can be completed, and safe hob replacement under the conditions of compact space of an excavation bin and inconvenience in operation can be realized in a mode of replacing the hob at the back of the cutterhead.

Description

Technical Field

[0001] The utility model belongs to the technical field of roller cutter disassembly and assembly equipment for shield machines, and in particular relates to a roller cutter replacement and disassembly and assembly tool used for shield machines. Background Art

[0002] The full-face tunnel boring machine (hereinafter referred to as the shield machine) is a highly intelligent major tunnel construction equipment that integrates mechanical, electrical, hydraulic, optical, computer and other technologies. With the increasing pace of localization of shield machines, shield machines can be seen in a large number of construction projects in key domestic engineering fields such as subway construction, urban pipeline corridors and pumped storage power stations. Shield machines have many advantages such as green construction, high efficiency and safety.

[0003] A conventional shield machine mainly consists of two parts: the main machine and the rear supporting parts. The main machine includes core key components such as the cutterhead, main drive, shield body and assembly machine. The cutterhead, as the frontmost component of the entire shield machine, carries the important function of cutting soil and rock, stabilizing the face so that the entire machine can move forward smoothly. When encountering hard and surrounding rock formations during excavation, a certain number of rollers need to be arranged on the surface of the cutterhead to provide sufficient cutting force. During the excavation process, wear and shedding of the rollers are inevitable, and at this time, the rollers need to be inspected and replaced.

[0004] Since the face space of the cutterhead excavation does not have the conditions for replacing the roller cutter, the roller cutter must be replaced in the excavation chamber on the back of the cutterhead. However, the space in the excavation chamber is compact and often requires pressure operations, so it is very difficult to stably dismantle the old roller cutter. After the new roller cutter is transported to the back of the cutter box by a manual crane, it is difficult to accurately position and install the roller cutter without suitable tooling. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes a roller cutter changing and disassembly tool for a shield machine, which can achieve accurate positioning and disassembly of the roller cutter in a smaller space, reduce the manpower and material consumption of disassembly of the roller cutter, and achieve fast and safe disassembly of the roller cutter.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions, including a tool changing bracket and a disassembly and assembly tool;

[0007] The disassembly and assembly tool comprises a connecting rod, one end of which is provided with a mounting seat, the mounting seat is provided with a mounting groove matching the shape of the hob body, and one end of the connecting rod away from the mounting seat is provided with a handle;

[0008] The tool changing bracket is provided with a groove for facilitating the sliding of the hob cutter body, and the position of the tool changing bracket corresponds to the position of the hob cutter body.

[0009] As a preferred solution of the utility model, a balancing weight is sleeved on the outer side of one end of the connecting rod away from the mounting seat, a first threaded hole is provided on the balancing weight, a threaded locking rod is provided through the threaded hole, and the handle is provided on the outer side of the balancing weight.

[0010] As another preferred solution of the utility model, a lifting eye screw for connecting a lifting tool is provided at one end of the connecting rod away from the mounting seat.

[0011] As a third preferred solution of the utility model, a first support block and a second support block for supporting the tool changing bracket are arranged on both sides of the tool changing bracket.

[0012] As the fourth preferred scheme of the utility model, the tool changing bracket is symmetrically provided with rotating shaft blocks on both sides, and the first support block and the second support block are provided with rotating shaft holes on the opposite sides, the rotating shaft blocks and the rotating shaft holes correspond in position and size, and the first support block and the second support block are respectively connected to the tool changing bracket through the rotating shaft blocks and the rotating shaft holes.

[0013] As a fifth preferred solution of the utility model, a tightening ear plate is respectively arranged on both sides of the tool changing bracket, and a second bolt is arranged through the tightening ear plate.

[0014] As a sixth preferred embodiment of the present invention, a plurality of second threaded holes are provided at corresponding positions of the hob body and the mounting seat, and the hob body and the mounting seat are connected by the cooperation of the second threaded holes and the hexagon socket screws.

[0015] Beneficial effects of the utility model:

[0016] The utility model proposes a cutter disassembly and assembly tool for a shield machine, which adopts a cutter disc back-end cutter changing method, and can realize the fast and safe disassembly and assembly of the shield machine cutter body under the condition of compact excavation space and inconvenient operation; the utility model realizes the first positioning installation of the cutter changing bracket by a first support block and a second support block, and realizes the second positioning installation of the cutter changing bracket by a second bolt and a tightening ear plate, the cutter changing bracket is accurately positioned and installed, and can carry a heavier cutter body to slide thereon, so as to assist manpower in disassembling and assembling the cutter body; the disassembly and assembly tool of the utility model is provided with a balancing weight for balancing the center of gravity, and the position of the handle can be adjusted, so as to facilitate the force exerted by users of different body shapes in different environments, and after the cutter body is pulled out, the cutter body can be lifted away by connecting the lifting tool through the lifting ring screws arranged thereon; the utility model pushes and pulls the cutter body by the disassembly and assembly tool, so that the cutter body slides on the cutter changing bracket, thereby realizing fast and safe replacement and installation of the cutter body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall main structure of the utility model.

[0018] Figure 2 for Figure 1 Cross-sectional view of section AA.

[0019] Figure 3 for Figure 2 Cross-sectional view of section BB.

[0020] Figure 4 It is a schematic diagram of the overall structure of the tool changing bracket.

[0021] Figure 5 It is a schematic diagram of the overall structure of the disassembly and assembly tool.

[0022] In the accompanying drawings, 1 is a tool changing bracket, 101 is a rotating shaft block, and 102 is a tightening ear plate;

[0023] 2 is the first support block, 3 is the second support block;

[0024] 4 is a disassembly tool, 401 is a connecting rod, 402 is a mounting seat, 403 is a mounting groove, 404 is a handle, 405 is a balance weight, 406 is a threaded locking rod, 407 is a lifting eye screw, and 408 is a hexagon socket screw;

[0025] 5 is a cutter seat, 6 is a cutter head structure, 7 is a hob body, 8 is a first bolt, and 9 is a second bolt. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0027] The utility model adopts the following technical solutions: Figure 1 , Figure 2 and Figure 3 As shown, the shield machine part mainly includes a cutter head structure 6, a cutter seat 5 is arranged inside the cutter head structure 6, and a hob body 7 is installed through the cutter seat 5;

[0028] The utility model comprises a disassembly and assembly tool 4 and a tool changing bracket 1;

[0029] like Figure 5 As shown, the disassembly tool 4 includes a connecting rod 401, one end of which is provided with a mounting seat 402, and the mounting seat 402 is provided with a mounting groove 403 matching the shape of the hob body 7, the mounting seat 402 is connected to the hob body 7, and the end of the connecting rod 401 away from the mounting seat 402 is provided with a handle 404;

[0030] The cutter head structure 6 is provided with a tool changing bracket 1 and a first support block 2 and a second support block 3 for supporting the tool changing bracket 1. Figure 4 As shown, the tool changing bracket 1 is provided with a groove for facilitating the sliding of the hob body 7, the position of the tool changing bracket 1 corresponds to the position of the hob body 7, the first support block 2 and the second support block 3 are fixedly connected to the tool seat 5, one end of the tool changing bracket 1 is connected to the first support block 2 and the second support block 3, and the other end of the tool changing bracket 1 is connected to the cutter disc body structure 6.

[0031] After the hob body 7 is connected to the disassembly tool 4, the hob can be slid in and out along the groove of the tool changing bracket 1 under the action of external force by pushing and pulling the disassembly tool 4, so that the hob body 7 can be disassembled and assembled.

[0032] As a preferred embodiment of the present invention, Figure 5 As shown, a balancing weight 405 is sleeved on the outer side of one end of the connecting rod 401 away from the mounting seat 402, and a first threaded hole is provided on the balancing weight 405, through which a threaded locking rod 406 is provided, and the handle 404 is provided on the outer side of the balancing weight 405; after rotating the threaded locking rod 406, the position of the balancing weight 405 can be adjusted, thereby balancing the center of gravity of the disassembly and assembly tool 4, and the position of the handle 404 can be adjusted to a suitable position, which is convenient for the user to exert force.

[0033] As another preferred embodiment of the present invention, Figure 5 As shown, one end of the connecting rod 401 away from the mounting seat 402 is provided with a lifting screw 407 for connecting a lifting tool. After the hoist body 7 is taken out, the lifting tool can be connected through the lifting screw 407 to transport the old hoist body 7 away.

[0034] As the third preferred embodiment of the present invention, Figure 3 As shown, the first support block 2 and the second support block 3 are symmetrically arranged on both sides of the tool changing bracket 1 .

[0035] As the fourth preferred embodiment of the present invention, Figure 3 As shown, the first support block 2 and the second support block 3 are fixedly connected to the tool holder 5 via a first bolt 8 and a washer.

[0036] As a fifth preferred embodiment of the present invention, Figure 4 As shown, the tool changing bracket 1 is symmetrically provided with shaft blocks 101 on both sides, and shaft holes are provided on the opposite sides of the first support block 2 and the second support block 3. The shaft blocks 101 and the shaft holes correspond in position and size, and the first support block 2 and the second support block 3 are respectively connected to the tool changing bracket 1 through the shaft blocks 101 and the shaft holes.

[0037] As the sixth preferred embodiment of the present invention, Figure 4As shown, a tightening ear plate 102 is provided on each side of the tool changing bracket 1, and a second bolt 9 is provided through the tightening ear plate 102. The two sides of the tightening ear plate 102 are in contact with the two sides inside the cutter disc structure 6. The tool changing bracket 1 is tightened to the inner side of the cutter disc structure 6 through the cooperation of the second bolt 9 and the tightening ear plate 102.

[0038] As the seventh preferred embodiment of the present invention, Figure 5 As shown, a plurality of second threaded holes are provided at corresponding positions of the hob body 7 and the mounting seat 402 , and the hob body 7 and the mounting seat 402 are connected by the second threaded holes and the hexagon socket screws 408 .

[0039] Related structural assembly preparations before disassembly and assembly of the hob:

[0040] Before disassembling the hob, first rotate the tool change area of ​​the cutter disc to a horizontal position, install the first support block 2 and the second support block 3 at the bottom of the cutter seat 5, the first support block 2 and the second support block 3 are symmetrically arranged, and the first support block 2 and the second support block 3 are fixed to the corresponding positions at the bottom of the cutter seat 5 by the first bolt 8 and the washer, and then place the tool change bracket 1, as shown in FIG. Figure 4 As shown, a rotating shaft block 101 is welded on both sides of the front part of the tool change bracket 1, and a tightening ear plate 102 is welded on both sides of the middle part of the tool change bracket 1. The rotating shaft block 101 is placed in the preset rotating shaft holes on the first support block 2 and the second support block 3 that have just been installed, and the preliminary positioning and installation of the tool change bracket 1 is completed; Figure 2 As shown, the second bolt 9 is passed through the tightening ear plates 102 on both sides of the tool change bracket 1 to tighten the tool change bracket 1 on the cutter head body structure 6. The positioning installation of the tool change bracket 1 is completed, and the installation preparation work before the hob disassembly and assembly is completed.

[0041] Specific steps for disassembling the hob:

[0042] Before disassembling the old hob body 7, first remove the wedge blocks and tension blocks used for fixing the hob body 7 on both sides; Figure 5 As shown, the mounting seat of the disassembly and assembly tool 4 and the hob body 7 are connected by four hexagon socket screws 408 to fix the disassembly and assembly tool 4 and the hob body 7; the threaded locking rod 406 is rotated until the balancing weight 405 is movable, and the position of the balancing weight 405 is adjusted to change the center of gravity of the disassembly and assembly tool 4 and reach a suitable force position, the threaded locking rod 406 is tightened to lock the balancing weight 405, and the handle 404 on the balancing weight 405 is pulled hard, and the old hob body 7 is pulled out along the groove on the tool changing bracket 1, and the old hob body 7 can be lifted away by connecting the lifting tool with the lifting eye screw 407; the installation process of the new hob can be operated according to the reverse process.

[0043] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the embodiments of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.

Claims

1. A tool for disassembling and replacing a cutter of a shield machine, characterized in that: It comprises a tool changing bracket (1) and a disassembly and assembly tool (4); The disassembly and assembly tool (4) comprises a connecting rod (401), one end of the connecting rod (401) is provided with a mounting seat (402), the mounting seat (402) is provided with a mounting groove (403) matching the shape of the hob body (7), and one end of the connecting rod (401) away from the mounting seat (402) is provided with a handle (404); A groove is provided on the tool changing bracket (1) for facilitating the sliding of the hob cutter body (7), and the position of the tool changing bracket (1) corresponds to the position of the hob cutter body (7).

2. A roller cutter disassembly and assembly tool for a shield machine as claimed in claim 1, characterized in that: A balancing weight (405) is sleeved on the outer side of one end of the connecting rod (401) away from the mounting seat (402), the balancing weight (405) is provided with a first threaded hole, a threaded locking rod (406) is provided through the threaded hole, and the handle (404) is arranged on the outer side of the balancing weight (405).

3. A roller cutter disassembly and assembly tool for a shield machine as claimed in claim 1, characterized in that: An eye screw (407) for connecting a lifting tool is provided at one end of the connecting rod (401) away from the mounting seat (402).

4. A roller cutter replacement and disassembly tool for a shield machine as claimed in claim 1, characterized in that: A first support block (2) and a second support block (3) for supporting the tool changing bracket (1) are arranged on both sides of the tool changing bracket (1).

5. A roller cutter replacement and disassembly tool for a shield machine as claimed in claim 4, characterized in that: The tool change bracket (1) is symmetrically provided with rotating shaft blocks (101) on both sides, and the first support block (2) and the second support block (3) are provided with rotating shaft holes on the opposite sides, the rotating shaft blocks (101) and the rotating shaft holes correspond in position and size, and the first support block (2) and the second support block (3) are respectively connected to the tool change bracket (1) through the rotating shaft blocks (101) and the rotating shaft holes.

6. A roller cutter replacement and disassembly tool for a shield machine as claimed in claim 1, characterized in that: A tightening ear plate (102) is provided on each side of the tool changing bracket (1), and a second bolt (9) is provided through the tightening ear plate (102).

7. A roller cutter disassembly and assembly tool for a shield machine as claimed in claim 1, characterized in that: A plurality of second threaded holes are provided at corresponding positions of the hob body (7) and the mounting seat (402), and the hob body (7) and the mounting seat (402) are connected by the cooperation of the second threaded holes and the hexagon socket screws (408).

Images