Open-type TBM (Tunnel Boring Machine) main cutter head structure

Abstract

The utility model provides an open-type TBM (tunnel boring machine) main cutter head structure, which belongs to the technical field of main cutter heads of tunneling machines and comprises a main cutter head body, a plurality of cavities and a plurality of automatic lubricating mechanisms are arranged in the main cutter head body, each automatic lubricating mechanism comprises a starting component and a lubricating component, the starting assembly comprises a guide rod fixedly connected between the inner top face and the inner bottom face of the cavity, the guide rod is slidably sleeved with a moving block, and a spring is fixedly connected between the upper surface of the moving block and the inner top face of the cavity. The starting assembly is arranged, centrifugal force generated by rotation of the main cutter head in the working process is used for driving the starting assembly, manual operation is not needed, safety and efficiency are achieved, and through the arranged lubricating assembly, a hob on the main cutter head can be conveniently and rapidly lubricated when the main cutter head is used; and the service life of the main cutter head is prolonged through lubrication maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of main cutterheads of tunnel boring machines, in particular to an open main cutterhead structure of a TBM tunnel boring machine. Background Art

[0002] An open-type TBM, also known as a full-face rock tunnel boring machine, is a type of mechanical equipment specifically designed for tunnel construction in rock strata. It integrates multiple functions such as tunneling, mucking, guiding, support, ventilation and dust prevention, and can simultaneously perform construction processes such as tunneling, support, and mucking and operate continuously. The cutterhead is the core component of the tunnel boring machine, located at the front of the machine. It is responsible for cutting the strata and cutting rock, soil and other materials into blocks. Its structural design and function have a significant impact on the performance of the entire tunnel boring machine.

[0003] When using the existing open-type TBM main cutterhead structure, its safe maintenance and correct operation are of vital importance to protecting the lives and property of employees. For the maintenance and operation of the main cutterhead structure, the lubrication of the TBM equipment should be standardized according to the usage conditions. Lubrication needs to be carried out at a certain period to ensure the life and use of the equipment. The existing lubrication method is not convenient enough, and the main cutterhead is often large in size, which makes manual lubrication very difficult. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an open main cutterhead structure of a TBM tunneling machine.

[0005] The embodiment of the present utility model provides an open type TBM main cutterhead structure, comprising:

[0006] A main cutter disc body, wherein a plurality of cavities are provided in the main cutter disc body;

[0007] Multiple automatic lubrication mechanisms, the automatic lubrication mechanisms include a starting component and a lubrication component, the starting component includes a guide rod fixedly connected between the top surface and the inner bottom surface of the cavity, a moving block is slidably sleeved on the guide rod, a spring is fixedly connected between the upper surface of the moving block and the inner top surface of the cavity, the inner side wall of the cavity is rotatably connected to a threaded rod through a bearing, the threaded rod is circumferentially fixedly connected to a gear, the side wall of the moving block is fixedly connected to a rack, and the gear is meshed with the rack.

[0008] Furthermore, the lubrication assembly includes a storage box fixedly connected to the inner side wall of the cavity and a cylinder, a piston is slidably connected in the cylinder, a connecting rod is fixedly connected to the side wall of the piston, the connecting rod passes through and is slidably connected to the side wall of the cylinder, a nut is threadedly connected to the threaded rod, a fixing plate is fixedly connected to the side wall of the nut, the side end of the connecting rod is fixedly connected to the side wall of the fixing plate, a feed pipe is connected between the storage box and the cylinder, and a discharge pipe is connected to the side wall of the cylinder.

[0009] Furthermore, the feed pipe and the discharge pipe are respectively arranged on both sides of the cylinder body, and a one-way valve is provided in each of the feed pipe and the discharge pipe.

[0010] Furthermore, the moving block is located at one end of the guide rod close to the center of the main cutter disc body, and the multiple springs are respectively sleeved on multiple guide rods.

[0011] Furthermore, the gear is concentrically arranged with the threaded rod, and the nut is located at one end of the threaded rod close to the cylinder.

[0012] Furthermore, the side wall of the piston is tightly fitted with the inner side wall of the cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The utility model provides a starting component and utilizes the centrifugal force generated by the rotation of the main cutter disc during operation to drive the starting component, thereby providing power for subsequent human lubrication operations without manual operation, which is safe and efficient. The lubricating component provided can conveniently lubricate the hob on the main cutter disc when the main cutter disc is in use, which is more efficient, safe and convenient, and can also extend the service life of the main cutter disc through lubrication and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the main cutterhead structure of an open TBM tunneling machine described in an embodiment of the present utility model.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structural analysis of the main cutterhead structure of an open TBM tunneling machine described in an embodiment of the present utility model.

[0017] Figure 3 This is a schematic diagram of a three-dimensional structural analysis from another perspective of the main cutterhead structure of an open-type TBM tunneling machine described in an embodiment of the present utility model.

[0018] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0019] In the above drawings: 1 main cutter disc body, 2 cavity, 3 guide rod, 4 moving block, 5 spring, 6 threaded rod, 7 gear, 8 rack, 9 storage box, 10 cylinder, 11 piston, 12 connecting rod, 13 nut, 14 fixing plate, 15 discharge pipe. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-4 As shown, the embodiment of the present invention proposes an open TBM main cutterhead structure, including:

[0022] The main cutter disc body 1 is provided with multiple cavities 2 and multiple automatic lubrication mechanisms. The automatic lubrication mechanism includes a starting component and a lubrication component. The starting component includes a guide rod 3 fixedly connected between the top surface and the inner bottom surface of the cavity 2. A moving block 4 is slidably sleeved on the guide rod 3. A spring 5 is fixedly connected between the upper surface of the moving block 4 and the inner top surface of the cavity 2. The inner wall of the cavity 2 is rotatably connected to a threaded rod 6 through a bearing. The circumference of the threaded rod 6 is fixedly connected to a gear 7. The side wall of the moving block 4 is fixedly connected to a rack 8. The gear 7 is meshed with the rack 8. The moving block 4 is located at one end of the guide rod 3 close to the center of the main cutter disc body 1. Multiple springs 5 ​​are respectively sleeved on multiple guide rods 3. The gear 7 and the threaded rod 6 are concentrically arranged so that the subsequent lubrication component can operate normally.

[0023] The lubrication assembly includes a storage box 9 and a cylinder 10 fixedly connected to the inner wall of the cavity 2, a piston 11 is slidably connected to the cylinder 10, a connecting rod 12 is fixedly connected to the side wall of the piston 11, the connecting rod 12 penetrates and slides and is connected to the side wall of the cylinder 10, a nut 13 is threadedly connected to the threaded rod 6, a fixing plate 14 is fixedly connected to the side wall of the nut 13, the side end of the connecting rod 12 is fixedly connected to the side wall of the fixing plate 14, a feed pipe is connected between the storage box 9 and the cylinder 10, a discharge pipe 15 is connected to the side wall of the cylinder 10, and the feed pipe and the discharge pipe 15 are respectively arranged on the cylinder On both sides of 10, one-way valves are provided in the feed pipe and the discharge pipe 15. The one-way valve of the feed pipe allows the lubricating oil in the storage box 9 to enter the cylinder 10 only from the storage box 9, and the one-way valve of the discharge pipe 15 allows the lubricating oil to flow in the discharge pipe 15 only from the cylinder 10 to the output end of the discharge pipe 15. The nut 13 is located at the end of the threaded rod 6 close to the cylinder 10, and the side wall of the piston 11 fits tightly against the inner wall of the cylinder 10, so that there is good sealing between the piston 11 and the cylinder 10, thereby allowing the lubrication component to operate normally.

[0024] The detailed working process of this utility model is as follows:

[0025] During use, after the installation of the main cutterhead body 1 and the installation of the tunnel boring machine equipment is completed and the main cutterhead body 1 is put into use, the main cutterhead body 1 contacts the rock layer and soil to be excavated, and rotates under the drive of the tunnel boring machine equipment. Here, taking an automatic lubrication mechanism as an example, the main cutterhead body 1 rotates. Under the influence of centrifugal force, the moving block 4 overcomes the elastic force of the spring 5, compresses it, and slides along the guide rod 3. When the moving block 4 slides, it drives the rack 8 to move, thereby causing the rack 8 to mesh with the gear 7 for transmission, thereby causing the gear 7 and the threaded rod 6 to rotate;

[0026] The threaded rod 6 rotates, and the nut 13 is threadedly engaged with the threaded rod 6 under the restriction of the cylinder 10, the piston 11 and the connecting rod 12, and then moves along the threaded rod 6. At this time, the piston 11 is driven to move by the connecting rod 12. The storage box 9 is filled with lubricating oil, and the lubricating oil reaches the cylinder 10 through the feed pipe. The piston 11 moves in the cylinder 10, compressing the lubricating oil in the cylinder 10 and discharging it through the discharge pipe 15. The output end of the discharge pipe 15 faces the hob on the main cutter head body 1. Multiple automatic lubrication mechanisms cooperate with each other to align the main cutter head during operation. The multiple rollers on the main body 1 are lubricated. When the main cutter disc body 1 stops rotating, the moving block 4 returns under the elastic force of the spring 5, causing the nut 13 and the piston 11 to move in the opposite direction to achieve reset. At this time, the piston 11 completes the loading of the cylinder 10 through air pressure, and the lubricating oil reaches the cylinder 10 from the storage box 9 through the feed pipe, which is convenient for the next lubrication operation. Through the lubrication component, the rollers on the main cutter disc body 1 can be lubricated conveniently, which is more efficient, safe and convenient. At the same time, the service life of the multiple rollers on the main cutter disc body 1 can be improved through lubrication and maintenance.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An open type TBM main cutterhead structure, characterized in that: include: A main cutter disc body (1), wherein a plurality of cavities (2) are provided in the main cutter disc body (1); A plurality of automatic lubrication mechanisms, the automatic lubrication mechanisms comprising a starting assembly and a lubrication assembly, the starting assembly comprising a guide rod (3) fixedly connected between the inner top surface and the inner bottom surface of a cavity (2), a moving block (4) being slidably sleeved on the guide rod (3), a spring (5) being fixedly connected between the upper surface of the moving block (4) and the inner top surface of the cavity (2), a threaded rod (6) being rotatably connected to the inner side wall of the cavity (2) via a bearing, a gear (7) being fixedly connected to the circumference of the threaded rod (6), a rack (8) being fixedly connected to the side wall of the moving block (4), and the gear (7) being meshed with the rack (8).

2. The open type TBM main cutterhead structure according to claim 1, characterized in that: in: The lubrication assembly comprises a storage box (9) fixedly connected to the inner wall of the cavity (2) and a cylinder (10); a piston (11) is slidably connected inside the cylinder (10); a connecting rod (12) is fixedly connected to the side wall of the piston (11); the connecting rod (12) penetrates and is slidably connected to the side wall of the cylinder (10); a nut (13) is threadedly connected to the threaded rod (6); a fixing plate (14) is fixedly connected to the side wall of the nut (13); a side end of the connecting rod (12) is fixedly connected to the side wall of the fixing plate (14); a material delivery pipe is connected between the storage box (9) and the cylinder (10); and a material discharge pipe (15) is connected to the side wall of the cylinder (10).

3. The open type TBM main cutterhead structure according to claim 2 is characterized in that: in: The feed pipe and the discharge pipe (15) are respectively arranged on both sides of the cylinder (10), and both the feed pipe and the discharge pipe (15) are provided with one-way valves.

4. The open type TBM main cutterhead structure according to claim 1, characterized in that: in: The moving block (4) is located at one end of the guide rod (3) close to the center of the main cutter disc body (1), and the plurality of springs (5) are respectively sleeved on the plurality of guide rods (3).

5. The open type TBM main cutterhead structure according to claim 2, characterized in that: in: The gear (7) is arranged concentrically with the threaded rod (6), and the nut (13) is located at one end of the threaded rod (6) close to the cylinder (10).

6. The open type TBM main cutterhead structure according to claim 2, characterized in that: in: The side wall of the piston (11) is tightly fitted to the inner wall of the cylinder (10).

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