Top shield machine head structure

Abstract

The utility model discloses a machine head structure of a top shield machine, which relates to the technical field of building construction equipment and comprises a motor, the output end of the motor is in transmission connection with a speed reduction component, the output end of the speed reduction component is in transmission connection with a cutterhead, and a duplex hob mounting groove is formed in the center of the cutterhead. And a plurality of duplex hob assemblies are fixedly mounted in the duplex hob mounting groove. The mounting frame is clamped in the positioning clamping groove through the matching effect between the positioning clamping block and the mounting bolt, when the duplex hob needs to be repaired and maintained, the duplex hob assembly is taken out from the interior of the duplex hob mounting groove, the mounting bolt is rotated, the limiting of the mounting bolt to the first mounting groove and the positioning clamping block is relieved, and then the duplex hob assembly can be repaired and maintained. And then the positioning clamping block is taken out from the interior of the positioning clamping groove, and finally the mounting frame is taken out from the interior of the positioning clamping groove, so that the duplex hob is maintained and replaced, and the service life of the cutter head in the top shield machine head structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction equipment, in particular to a head structure of a top shield machine. Background Art

[0002] The shield machine combines the advantages of traditional pipe jacking and shield methods, and can adapt to the requirements of small radius turns and long-distance excavation. Through the design concept of "pipe jacking + shield", it effectively meets the special requirements of non-excavation, small diameter, long distance, curved jacking in urban underground pipe network construction. The shield machine is composed of multiple structures, including the machine head and the middle shield. The above structures are interconnected to form the entire shield machine.

[0003] For example, Chinese patent publication No. CN217055168U discloses an anti-rotation device for a large-diameter jacking machine head, which includes a shield body, a translation assembly and a positioning assembly; the translation assembly is used to drive the shield body forward; the positioning assembly includes at least two steel cylinders and a fixing part, the two steel cylinders are symmetrically arranged about the axial direction of the shield body, the steel cylinders are connected to the shield body, the axial direction of the steel cylinders is perpendicular to the axial direction of the shield body, the fixing part is arranged in the steel cylinder, and the fixing part is used to fix the shield body and the translation assembly.

[0004] However, when existing shield machines encounter complex geological conditions during jacking construction, such as a large number of stratum faults, abundant groundwater, and high geological strength, the construction difficulty increases, causing the cutters on the shield machine's cutterhead to easily wear and damage, thereby affecting the shield machine's jacking construction efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that when the existing shield machines in the prior art encounter complex geological conditions during jacking construction, such as a large number of stratum faults, abundant groundwater, and high geological strength, the construction difficulty increases, resulting in the tools on the shield machine cutter head being easily worn and damaged, thereby affecting the jacking construction efficiency of the shield machine, and a jacking shield machine head structure is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a head structure of a top shield machine, including a motor, the output end of the motor is transmission-connected with a reduction assembly, the output end of the reduction assembly is transmission-connected with a cutter disc, a double-hook cutter mounting groove is provided at the center of the cutter disc, a plurality of double-hook cutter assemblies are fixedly installed inside the double-hook cutter mounting groove, the plurality of double-hook cutter assemblies include a No. 1 mounting groove, both ends of the inner side of the No. 1 mounting groove are provided with positioning slots, the two positioning slots are movably connected with mounting frames inside, the outer side of the mounting frame is rotatably connected with a double-hook cutter, one end of the inner side of the two positioning slots is movably connected with a positioning block, the inner side of the positioning block is threadedly connected with a mounting bolt, and the mounting bolt is threadedly connected to the bottom end of the No. 1 mounting groove.

[0007] Preferably, a plurality of hydraulic wear detection devices are evenly and fixedly mounted on the outer side of the double-jointed hob mounting groove.

[0008] Preferably, a plurality of single-piece roller cutter mounting grooves are symmetrically formed on the top surface of the cutter disc, and a single-piece roller cutter assembly is fixedly mounted inside the single-piece roller cutter mounting grooves.

[0009] Preferably, a plurality of scraper installation grooves are evenly and annularly formed at the edge of the top surface of the blade disc, and scraper assemblies are fixedly installed inside the plurality of scraper installation grooves.

[0010] Preferably, the single-piece roller cutter assembly includes a second mounting groove and a single-piece roller cutter.

[0011] Preferably, the scraper assembly includes a No. 3 mounting slot and a single-piece scraper.

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

[0013] 1. In the utility model, the mounting frame is clamped in the interior of the positioning slot by the cooperation between the positioning block and the mounting bolt. When the double hob needs to be repaired and maintained, the double hob assembly is first taken out from the interior of the double hob mounting slot, the mounting bolt is rotated, the limit of the mounting bolt on the No. 1 mounting slot and the positioning block is released, and then the positioning block is taken out from the interior of the positioning slot, and finally the mounting frame is taken out from the interior of the positioning slot, and the double hob is repaired and replaced, thereby extending the service life of the cutter disc in the head structure of the top shield machine.

[0014] 2. In the utility model, by installing a double roller cutter assembly, a single roller cutter assembly and a scraper assembly on one side of the cutter disc, when the head structure of the top shield machine is working, the cutter disc can easily and efficiently complete the breaking of soil and rocks in front, thereby improving the working efficiency and stability of the head structure of the top shield machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural schematic diagram of a top shield machine head structure is proposed for the utility model;

[0016] Figure 2 A three-dimensional structural diagram of a cutter disc in a head structure of a top shield machine is proposed for the utility model;

[0017] Figure 3 The utility model provides a three-dimensional structural schematic diagram of a double-linked hob assembly in a head structure of a top shield machine;

[0018] Figure 4 A partial cross-sectional view of a double-jointed hob assembly in a head structure of a top shield machine is proposed for the utility model;

[0019] Figure 5 The utility model provides a schematic diagram of the connection relationship between a mounting frame and a double-linked hob in a head structure of a top shield machine.

[0020] Legend: 1. Motor; 2. Speed ​​reduction assembly; 3. Cutter disc; 31. Double hob mounting slot; 311. Hydraulic wear detection device; 32. Double hob assembly; 321. Mounting slot No. 1; 322. Positioning card slot; 323. Mounting frame; 324. Double hob; 325. Positioning card block; 326. Mounting bolt; 33. Single-piece hob mounting slot; 331. Single-piece hob assembly; 332. Mounting slot No. 2; 333. Single-piece hob; 34. Scraper mounting slot; 341. Scraper assembly; 342. Mounting slot No. 3; 343. Single-piece scraper. 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.

[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] Embodiment 1

[0024] like Figure 1-5 As shown, the utility model provides a head structure of a top shield machine, including a motor 1, the output end of the motor 1 is transmission-connected with a reduction assembly 2, the output end of the reduction assembly 2 is transmission-connected with a cutter disc 3, a double hob mounting groove 31 is provided at the center of the cutter disc 3, a plurality of double hob assemblies 32 are fixedly installed inside the double hob mounting groove 31, the plurality of double hob assemblies 32 include a No. 1 mounting groove 321, both ends of the inner side of the No. 1 mounting groove 321 are provided with positioning slots 322, the inner sides of the two positioning slots 322 are movably connected with mounting frames 323, the outer side of the mounting frame 323 is rotatably connected with a double hob 324, one end of the inner sides of the two positioning slots 322 is movably connected with a positioning block 325, the inner side of the positioning block 325 is threadedly connected with a mounting bolt 326, the mounting bolt 326 is threadedly connected to the bottom end of the No. 1 mounting groove 321, and a plurality of hydraulic wear detection devices 311 are evenly and fixedly installed on the outer side of the double hob mounting groove 31.

[0025] The specific settings and functions of this embodiment are described in detail below. When the hydraulic wear detection device 311 detects that the tool is damaged, it sends an alarm signal to the terminal. According to the alarm signal, the maintenance personnel remove the damaged double hob assembly 32 from the inside of the double hob mounting slot 31, rotate the mounting bolt 326, release the limiting effect of the mounting bolt 326 on the No. 1 mounting slot 321 and the positioning block 325, then remove the positioning block 325 from the inside of the positioning slot 322, and finally remove the mounting frame 323 from the inside of the positioning slot 322, and repair and replace the double hob 324, thereby extending the service life of the cutter disc 3 in the head structure of the top shield machine.

[0026] Embodiment 2

[0027] like Figure 1 and Figure 2 As shown, a plurality of single-piece roller cutter mounting grooves 33 are symmetrically provided on the top surface of the cutter disc 3, and a single-piece roller cutter assembly 331 is fixedly installed inside the single-piece roller cutter mounting grooves 33. A plurality of scraper blade mounting grooves 34 are evenly and annularly provided at the edge of the top surface of the cutter disc 3, and a scraper blade assembly 341 is fixedly installed inside the plurality of scraper blade mounting grooves 34. The single-piece roller cutter assembly 331 includes a No. 2 mounting groove 332 and a single-piece roller cutter 333, and the scraper blade assembly 341 includes a No. 3 mounting groove 342 and a single-piece scraper blade 343.

[0028] The effect achieved by the entire embodiment is that, by installing the double-jointed roller cutter assembly 32, the single-piece roller cutter assembly 331 and the scraper assembly 341 on one side of the cutter disc 3, when the head structure of the top shield machine is working, the cutter disc 3 can easily and efficiently complete the breaking of the soil and rocks in front, thereby improving the working efficiency and stability of the head structure of the top shield machine. The double-jointed roller cutter assembly 32, the single-piece roller cutter assembly 331 and the scraper assembly 341 are installed inside their respective mounting grooves by bolts, and the loading and unloading are simple and convenient, the connection is reliable, and it has good replaceability.

[0029] The use method and working principle of the device: When the hydraulic wear detection device 311 detects that the tool is damaged, it sends an alarm signal to the terminal. According to the alarm signal, the maintenance personnel will remove the damaged double hob assembly 32 from the inside of the double hob mounting slot 31, rotate the mounting bolt 326, release the limit of the mounting bolt 326 on the No. 1 mounting slot 321 and the positioning block 325, and then take out the positioning block 325 from the inside of the positioning slot 322, and finally take out the mounting frame 323 from the inside of the positioning slot 322, and repair and replace the double hob 324. By installing a double-jointed roller cutter assembly 32, a single-piece roller cutter assembly 331 and a scraper assembly 341 on one side of the cutter disc 3, when the head structure of the top shield machine is working, the motor 1 drives the reduction assembly 2 to work, and the small gear in the reduction assembly 2 drives the large gear drive disc to rotate, and finally drives the cutter disc 3 to rotate, so that the cutter disc 3 can easily and efficiently complete the breaking of the soil and rocks in front, thereby improving the working efficiency and stability of the head structure of the top shield machine, wherein the double-jointed roller cutter assembly 32, the single-piece roller cutter assembly 331 and the scraper assembly 341 are installed inside their respective mounting grooves by bolts.

[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 head structure of a top shield machine, comprising a motor (1), characterized in that: The output end of the motor (1) is drivingly connected to a reduction assembly (2), and the output end of the reduction assembly (2) is drivingly connected to a cutter disc (3). A double-jointed hob installation groove (31) is provided at the center of the cutter disc (3), and a plurality of double-jointed hob installation grooves (31) are fixedly installed inside the double-jointed hob installation grooves (31). The plurality of double-jointed hob installation grooves (32) include a first installation groove (321), and both ends of the inner side of the first installation groove (321) are provided with fixed The two positioning slots (322) are movably connected to a mounting frame (323) inside the two positioning slots (322), and a double roller (324) is rotatably connected to the outer side of the mounting frame (323). A positioning block (325) is movably connected to one end of the inner side of the two positioning slots (322), and a mounting bolt (326) is threadedly connected to the inner side of the positioning block (325), and the mounting bolt (326) is threadedly connected to the bottom end of the first mounting slot (321).

2. A top shield machine head structure according to claim 1, characterized in that: A plurality of hydraulic wear detection devices (311) are evenly and fixedly mounted on the outer side of the double-jointed roller cutter mounting groove (31).

3. A top shield machine head structure according to claim 1, characterized in that: A plurality of single-piece roller cutter installation grooves (33) are symmetrically provided on the top surface of the cutter disc (3), and a single-piece roller cutter assembly (331) is fixedly installed inside the single-piece roller cutter installation groove (33).

4. A top shield machine head structure according to claim 1, characterized in that: A plurality of scraper installation grooves (34) are evenly and annularly formed at the edge of the top surface of the blade disc (3), and scraper assemblies (341) are fixedly installed inside the plurality of scraper installation grooves (34).

5. The head structure of a top shield machine according to claim 3, characterized in that: The single-piece roller cutter assembly (331) comprises a second installation groove (332) and a single-piece roller cutter (333).

6. A top shield machine head structure according to claim 4, characterized in that: The scraper assembly (341) comprises a third mounting groove (342) and a single-piece scraper (343).

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