CN220036671U - Shield constructs central hobbing cutter case structure - Google Patents
Shield constructs central hobbing cutter case structure Download PDFInfo
- Publication number
- CN220036671U CN220036671U CN202321645341.5U CN202321645341U CN220036671U CN 220036671 U CN220036671 U CN 220036671U CN 202321645341 U CN202321645341 U CN 202321645341U CN 220036671 U CN220036671 U CN 220036671U
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- China
- Prior art keywords
- cutter
- hob
- pin shaft
- rest
- head bolt
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- 238000003466 welding Methods 0.000 claims description 4
- 125000003003 spiro group Chemical group 0.000 claims 2
- 230000005641 tunneling Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a shield center hob cutter box structure, which comprises cutter box seat plates and cutter box rib plates, wherein adjacent cutter box seat plates are fixedly connected with the cutter box rib plates; the central hob cutter frame is in threaded connection with the cutter box, and the central hob cutter is arranged in the cutter frame; the inner side of the cutter box seat plate is provided with a plurality of cutter grooves, two sides of each cutter groove are provided with pin shaft holes, two ends of the central hob rest are symmetrically provided with screw through holes, and a threaded pin shaft is inserted into each pin shaft hole; the hexagon head bolt penetrates through the central hob rest and the hob case seat plate to be in threaded connection with the threaded pin shaft. The bottom end of one side of the central hob rest is provided with an inclined opening, an inclined pressing block is placed in the inclined opening, and a hexagon head bolt is in threaded connection with the threaded pin shaft. According to the utility model, the threaded pin shaft is inserted into the pin shaft hole arranged in the cutter box, the double-stack self-locking gasket threads are sleeved on the hexagon head bolt, so that the hexagon head bolt is connected with the threaded pin shaft, the inclined pressing block adopts a wedge-shaped structure, and when the shield tunneling machine is pushed in a stratum, the cutter box can bear higher impact frequency, and the overall strength of the cutter box is improved.
Description
Technical Field
The utility model relates to the technical field of shield machines, in particular to a shield center hob box structure.
Background
Along with the rapid development of urban infrastructure and civil engineering, the method has higher requirements on the cost of tunnel construction technology. In the continuous development of tunnel construction technology, the cutter consumption of the shield machine is one of the important points of construction cost. In the construction process of the shield machine in the hard uneven rock stratum, the hob box is impacted by the disc hob, and high requirements are placed on the structure of the hob box.
However, when the shield tunneling machine in the prior art advances in the rock stratum, the hob cutter box is high in impact frequency and easy to damage, the cutter is consumed greatly and replaced frequently, and meanwhile, the existing cutter box is simple in structure and low in strength, the work of assembling the clamping piece is complex, and the disassembly and replacement of the cutter box are time-consuming. The cutter holder structure that traditional is commonly used, center hobbing cutter directly put through hexagon head bolt and installs on the blade disc, if screw hole on the blade disc is smooth silk, just needs the manual work to go to maintain, just so increased construction cost, this kind of structure does not have wedge structure simultaneously and fixes a position the cutter, if hexagon head bolt has become flexible when shield constructs the construction, then the rocking of cutter very easily cuts off hexagon head bolt. Therefore, the assembly needs to be replaced when the center hob is replaced, the construction progress is affected, and the cost of shield construction is greatly increased.
Therefore, it is necessary to provide a structure of a shield center hob case, which solves the problems existing in the prior art.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a shield center hob case structure which solves the problems of complicated assembly part replacement and lower structural strength caused by impact fault of hob cases in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a shield center hob cutter box structure comprises a cutter box,
the tool box comprises tool box seat plates on the front side and the rear side and tool box rib plates on the left side and the right side, and the adjacent tool box seat plates are fixedly connected with the tool box rib plates; the central hob cutter frame is in threaded connection with the cutter box, and the central hob cutter is arranged in the cutter frame;
the inner side of the cutter box seat plate is provided with a plurality of cutter grooves, two sides of each cutter groove are provided with pin shaft holes, two ends of the central hob rest are symmetrically provided with screw through holes, and a threaded pin shaft is inserted into each pin shaft hole;
the hexagon head bolt penetrates through the central hob rest and the hob case seat plate to be in threaded connection with the threaded pin shaft.
Preferably, the inner side of the cutter box is abutted with the central hob cutter frame.
Preferably, concave tables are arranged on two sides in the cutter box, bosses are arranged on two ends of the central hob cutter frame, and the concave tables are in butt joint with the bosses.
Preferably, the inclined opening is arranged at the bottom end of one side of the central hob rest, the inclined pressing block is placed in the inclined opening, one hexagon head bolt penetrates through the inclined pressing block, the central hob rest and the tool box seat plate to be in threaded connection with the threaded pin shaft, and the other hexagon head bolt penetrates through the central hob rest and the tool box seat plate to be in threaded connection with the threaded pin shaft.
Preferably, the hexagon head bolt is sleeved with a double-stack self-locking washer, and the double-stack self-locking washer is arranged between the bolt head of the hexagon head bolt and the tool rest.
Preferably, adjacent tool case seat plates and tool case rib plates form the tool case through welding.
Preferably, the threaded pin shaft is provided with a through internal threaded hole.
Preferably, screw holes are respectively arranged on two sides of the threaded pin shaft.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the threaded pin shaft is inserted into the pin shaft hole arranged in the cutter box, the hexagon head bolt is connected with the threaded pin shaft, the cutter box is connected with the central hob rest into a whole, and the structural strength of the whole cutter box structure is improved. When the central hob is installed or disassembled, the thread is not easy to slide, even if the thread pin shaft or the hexagon head bolt slides, only the sliding part is needed to be replaced, the whole hob box is not needed to be replaced, and the cost for replacing the hob can be greatly reduced.
2. According to the utility model, the cutter box is abutted with the central hob rest, so that the movement of the central hob rest on the horizontal position is limited by the cutter box. Through concave table and boss butt that sets up, when changing center hobbing cutter knife rest, can reduce the operation of calibration center hobbing cutter knife rest.
3. According to the method for installing the inclined press block in the cutter box structure, the inclined port is formed in the bottom of the cutter holder of the central hob, the inclined press block is installed in the inclined port, the hexagon head bolt is in threaded connection with the threaded pin shaft, the inclined press block is abutted to the inner side wall of the cutter box seat plate after being subjected to downward force, so that the inclined press block, the cutter holder of the central hob and the cutter box seat plate are kept fixed, when the shield tunneling machine is pushed in a stratum, the cutter box can bear higher impact frequency, the hexagon head bolt is free from shearing force and is purely subjected to the tensile force of the cutter, the cutter is positioned through the wedge structure, and the fracture risk of the hexagon head bolt is greatly reduced.
Drawings
FIG. 1 is a schematic view of a tool case according to the present utility model;
FIG. 2 is a top view of the tool case of the present utility model;
FIG. 3 is a schematic cross-sectional view of B-B of FIG. 2 in accordance with the present utility model;
FIG. 4 is a schematic diagram of the connection of a tool case saddle and a tool case gusset in a tool case of the present utility model;
FIG. 5 is a schematic view of the structure of the gusset of the tool case of the present utility model;
FIG. 6 is a schematic cross-sectional view of A-A of FIG. 5 in accordance with the present utility model;
FIG. 7 is a schematic view of the structure of the center hob head of the present utility model;
FIG. 8 is a top view of the center hob head of the present utility model;
FIG. 9 is a schematic cross-sectional view of the C-C of FIG. 8 in accordance with the present utility model;
FIG. 10 is a schematic view of the structure of the diagonal press block of the present utility model;
fig. 11 is a schematic view of a threaded pin structure according to the present utility model.
The reference numerals in the figures are:
1. a tool box; 2. a tool box seat board; 3. a knife box rib plate; 4. a central hob head; 5. a knife slot; 6. a pin shaft hole; 7. screw via holes; 8. a threaded pin shaft; 9. a bevel opening; 10. a diagonal briquetting; 11. a hex head bolt; 12. a concave table; 13. a boss; 14. double-stack self-locking washers; 15. a center hob; 16. an internal threaded hole.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
Example 1
As shown in fig. 1 to 11, a shield center hob cutter box structure comprises a cutter box 1,
the tool box 1 comprises tool box seat plates 2 on the front side and the rear side and tool box rib plates 3 on the left side and the right side, and the adjacent tool box seat plates 2 are fixedly connected with the tool box rib plates 3; the central hob rest 4 is in threaded connection with the hob case 1, and a central hob 15 is arranged in the rest 4;
the inner side of the cutter box seat plate 2 is provided with a plurality of cutter grooves 5, two sides of each cutter groove 5 are provided with pin shaft holes 6, two ends of the central hob cutter rest 4 are symmetrically provided with screw through holes 7, and a threaded pin shaft 8 is inserted into each pin shaft hole 6; preferably, the threaded pin shaft 8 is subjected to heat treatment, so that the strength of the threaded pin shaft 8 is improved,
the hexagon head bolt 11 penetrates through the center hob cutter rest 4 and the cutter box seat board 2 and is in threaded connection with the threaded pin shaft 8. The threaded pin shaft 8 is inserted into the pin shaft hole 6 arranged in the tool box 1, the hexagon head bolt 11 is connected with the threaded pin shaft 8, the tool box 1 is connected with the central hob rest 4 into a whole, and the structural strength of the whole tool box structure is improved. When the central hob cutter rest 4 is installed or dismounted, threads are not easy to slide, even if the threaded pin shaft 8 or the hexagon head bolt 11 slides, only the sliding parts are needed to be replaced, the whole cutter box 1 is not needed to be replaced, and the cost for replacing the cutter can be greatly reduced.
Further, the inner side of the case 1 abuts against the center hob holder 4. The cutter box 1 is abutted with the central hob cutter rest 4, and the cutter box 1 limits the movement of the central hob cutter rest 4 in the horizontal position.
Furthermore, concave tables 12 are arranged on two sides in the tool box 1, bosses 13 are arranged on two ends of the central hob rest 4, and the concave tables 12 are in contact with the bosses 13. By providing the concave 12 in abutment with the convex 13, the operation of calibrating the center hob holder 4 can be reduced when the center hob holder 4 is replaced.
Further, a bevel 9 is arranged at the bottom end of one side of the center hob frame 4, a bevel pressing block 10 is placed in the bevel 9, one hexagon head bolt 11 penetrates through the bevel pressing block 10, the center hob frame 4 and the tool box seat plate 2 to be in threaded connection with the threaded pin shaft 8, and the other hexagon head bolt 11 penetrates through the center hob frame 4 and the tool box seat plate 2 to be in threaded connection with the threaded pin shaft 8. Because the structure of the tool box 1 adopts the installation method of the inclined pressing block 9, the inclined opening 9 is arranged at the bottom of the center hob cutter frame 4, the inclined pressing block 10 is installed in the inclined opening 9, the hexagon head bolt 11 is in threaded connection with the threaded pin shaft 8, after the inclined pressing block 10 moves towards the inclined surface direction of the inclined opening 9 under the downward force, the inclined pressing block 10 is abutted with the inner side wall of the tool box seat plate 2, so that the inclined pressing block 10, the center hob cutter frame 4 and the tool box seat plate 2 are kept fixed, when the shield tunneling machine advances in a stratum, the tool box 1 can bear higher impact frequency, the hexagon head bolt 11 is not subjected to shearing force, the cutter is simply born to bear the pulling force of the cutter, and the cutter is positioned through the wedge structure, so that the fracture risk of the hexagon head bolt 11 is greatly reduced.
Further, a double-stacked self-locking washer 14 is sleeved on the hexagon head bolt 11, and the double-stacked self-locking washer 14 is arranged between the bolt head of the hexagon head bolt 11 and the tool rest 4. By means of the double-stacked self-locking washers 14, the risk of slipping of the hexagon head bolt 11 under high frequency impact is prevented.
Further, adjacent tool box seat plates 2 and tool box rib plates 3 form the tool box 1 through welding. The tool case 1 is formed by welding, so that the structural strength of the tool case 1 is improved.
Further, the threaded pin shaft 8 is provided with an internally threaded hole 16. The hexagon head bolt 11 is in threaded connection with the internal threaded hole 16 of the threaded pin shaft 8.
Further, screw holes are respectively formed in two sides of the threaded pin shaft 8. The threaded pin shaft 8 or the hexagon head bolt 11 slides, only the sliding part is needed to be replaced, the threaded pin shaft 8 is pulled out to replace parts by screwing the bolt into the screw hole, and the cost of replacing the cutter can be greatly reduced.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a shield constructs center hobbing cutter case structure which characterized in that: comprises a tool box (1),
the tool box (1) comprises tool box seat plates (2) on the front side and the rear side and tool box rib plates (3) on the left side and the right side, and the adjacent tool box seat plates (2) are fixedly connected with the tool box rib plates (3); the central hob (15) is arranged in the hob frame (4);
a plurality of knife grooves (5) are formed in the inner side of the knife box seat plate (2), pin shaft holes (6) are formed in two sides of the knife grooves (5), screw through holes (7) are symmetrically formed in two ends of the center hob cutter rest (4), and a threaded pin shaft (8) is inserted into the pin shaft holes (6);
the hexagon head bolt (11) penetrates through the center hob cutter rest (4) and the cutter box seat board (2) to be in threaded connection with the threaded pin shaft (8).
2. The shield center hob case structure according to claim 1, wherein: the inner side of the tool box (1) is in contact with a central hob cutter rest (4).
3. The shield center hob case structure according to claim 2, wherein: concave tables (12) are arranged on two sides in the cutter box (1), bosses (13) are arranged at two ends of the central hob cutter rest (4), and the concave tables (12) are abutted with the bosses (13).
4. The shield center hob case structure according to claim 1, wherein: one side bottom of center hobbing cutter knife rest (4) sets up bevel connection (9), and oblique briquetting (10) are placed in bevel connection (9), and one hexagon head bolt (11) runs through oblique briquetting (10), center hobbing cutter knife rest (4) and toolbox bedplate (2) and screw pin axle (8) spiro union, and another hexagon head bolt (11) runs through center hobbing cutter knife rest (4) and toolbox bedplate (2) and screw pin axle (8) spiro union.
5. The shield center hob case structure according to claim 4, wherein: the hexagonal head bolt (11) is sleeved with a double-stacked self-locking washer (14), and the double-stacked self-locking washer (14) is arranged between the bolt head of the hexagonal head bolt (11) and the tool rest (4).
6. The shield center hob case structure according to claim 4, wherein: adjacent tool box seat boards (2) and tool box rib plates (3) form the tool box (1) through welding.
7. The shield center hob case structure according to claim 1, wherein: the threaded pin shaft (8) is provided with a through internal threaded hole (16).
8. The shield center hob case structure according to claim 4, wherein: screw holes are respectively arranged on two sides of the threaded pin shaft (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321645341.5U CN220036671U (en) | 2023-06-27 | 2023-06-27 | Shield constructs central hobbing cutter case structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321645341.5U CN220036671U (en) | 2023-06-27 | 2023-06-27 | Shield constructs central hobbing cutter case structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220036671U true CN220036671U (en) | 2023-11-17 |
Family
ID=88721089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321645341.5U Active CN220036671U (en) | 2023-06-27 | 2023-06-27 | Shield constructs central hobbing cutter case structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220036671U (en) |
-
2023
- 2023-06-27 CN CN202321645341.5U patent/CN220036671U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |