CN216553922U - Shield cutter head - Google Patents
Shield cutter head Download PDFInfo
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- CN216553922U CN216553922U CN202122707470.XU CN202122707470U CN216553922U CN 216553922 U CN216553922 U CN 216553922U CN 202122707470 U CN202122707470 U CN 202122707470U CN 216553922 U CN216553922 U CN 216553922U
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Abstract
The utility model provides a shield cutter head, which comprises: a cutter head ring; the cutter beam is arranged in the cutter disc circular ring and is connected with the cutter disc circular ring; the shield hobbing cutter comprises a cutter body, a cutter shaft and a sliding bearing, wherein the cutter shaft penetrates through the sliding bearing, the cutter body is sleeved on the outer wall of the sliding bearing, and the inner wall of the sliding bearing is in clearance fit with the outer wall of the cutter shaft; the side wall of the sliding bearing is provided with a plurality of mounting holes which are arranged at intervals along the circumferential direction of the sliding bearing, the plurality of mounting holes are internally provided with antifriction parts, and the end surfaces of the antifriction parts are flush with the inner wall of the sliding bearing or the end surfaces of the antifriction parts protrude out of the inner wall of the sliding bearing. Through the technical scheme provided by the application, the problem that the number of the shield hobbing cutters on the shield cutterhead in the related technology is small can be solved.
Description
Technical Field
The utility model relates to the technical field of shield devices, in particular to a shield cutter head.
Background
The shield machine is provided with a shield cutter head, and a shield hob is arranged on the shield cutter head and used as a cutting tool to break rock and rock slag. The shield constructs hobbing cutter includes arbor, cutter body and bearing, and the bearing housing is established on the arbor and provides the bearing capacity for the cutter body, and the cutter body directly contacts and broken rock with the rock.
In the related art, the shield hobbing cutter adopts a rolling bearing to contact with the cutter body and provide bearing capacity, however, the rolling bearing is large in size, so that the distance between adjacent shield hobbing cutters is increased, and the number of the shield hobbing cutters on the shield cutter head is small.
SUMMERY OF THE UTILITY MODEL
The utility model provides a shield cutter head, which aims to solve the problem that the number of shield hobs on the shield cutter head in the related technology is small.
The utility model provides a shield cutter head, which comprises: a cutter head ring; the cutter beam is arranged in the cutter disc circular ring and is connected with the cutter disc circular ring; the shield hobbing cutter comprises a cutter body, a cutter shaft and a sliding bearing, wherein the cutter shaft penetrates through the sliding bearing, the cutter body is sleeved on the outer wall of the sliding bearing, and the inner wall of the sliding bearing is in clearance fit with the outer wall of the cutter shaft; the side wall of the sliding bearing is provided with a plurality of mounting holes which are arranged at intervals along the circumferential direction of the sliding bearing, the plurality of mounting holes are internally provided with antifriction parts, and the end surfaces of the antifriction parts are flush with the inner wall of the sliding bearing or the end surfaces of the antifriction parts protrude out of the inner wall of the sliding bearing.
Furthermore, the sliding bearing comprises a circular ring section and a cylindrical section, the inner edge of the circular ring section is connected with one end of the cylindrical section, and the plurality of mounting holes extend along the radial direction of the cylindrical section and penetrate through the side wall of the cylindrical section.
Furthermore, the circular section is located outside the cutter body, the circular section penetrates between the cutter body and the cutter shaft, the side wall of the circular section is abutted to the side wall of the cutter body, and the outer wall of the circular section is abutted to the inner wall of the cutter body and is in interference fit with the inner wall of the cutter body.
Furthermore, one side of the circular ring section facing the circular ring section is provided with a plurality of chip storage grooves which are arranged at intervals along the circumferential direction of the circular ring section, and the plurality of chip storage grooves extend along the radial direction of the circular ring section and penetrate through the outer edge of the circular ring section.
Furthermore, the shield hobbing cutter also comprises a first end cover and a second end cover, wherein the first end cover and the second end cover are respectively arranged on two sides of the cutter body; the shield constructs the hobbing cutter and includes the slide bearing that two symmetries set up, and first end cover lid is established in the outside of cutter body and one of them slide bearing, and the second end cover lid is established in the outside of cutter body and another slide bearing, and first end cover and second end cover all with the lateral wall clearance fit of ring segment.
Further, the cutter body comprises a cutter body, a cutter ring and a retaining ring, the cutter ring is sleeved on the cutter body, the cutter body is sleeved on the outer wall of the sliding bearing, the cutter ring is in interference fit with the cutter body, and the cutter body is in interference fit with the sliding bearing;
the cutter body has annular groove and the step of interval setting, and annular groove and step all extend along the circumference of cutter body, and the retaining ring sets up in the annular groove, and the cutter ring clamp is established between retaining ring and step.
Furthermore, the cutter beams comprise a plurality of main cutter beams and a plurality of auxiliary cutter beams, the main cutter beams and the auxiliary cutter beams are arranged at intervals along the circumferential direction of the shield cutter head, and the shield hob is arranged on the main cutter beams.
Furthermore, the shield cutter head also comprises a slag guide plate, the slag guide plate is arranged on the main cutter beam, and the slag guide plate is positioned on the side part of the shield hob and extends along the circumferential direction of the shield cutter head.
Further, the shield cutter head further comprises wear-resisting plates, and the wear-resisting plates are arranged on the outer surfaces of the main cutter beam and the auxiliary cutter beam.
Furthermore, the shield cutter head further comprises rib plates, the rib plates are arranged between the adjacent main cutter beam and the adjacent auxiliary cutter beam, and the rib plates are respectively connected with the main cutter beam and the auxiliary cutter beam.
By applying the technical scheme of the utility model, the shield hobbing cutter is arranged on the cutter beam of the shield cutter head, the shield hobbing cutter comprises a cutter body, a cutter shaft and a sliding bearing, the cutter body is sleeved on the outer wall of the sliding bearing, the cutter shaft is arranged on the sliding bearing in a penetrating way, the sliding bearing provides bearing capacity for the cutter body, the cutter body rotates and contacts with rocks to crush the rocks when the shield cutter head rotates, and the sliding bearing can shorten the distance between the shield hobbing cutters as compared with the rolling bearing in the related technology, so that the aperture opening ratio of the shield cutter head can be increased, and the number of the shield hobbing cutters in the cutter head with a certain size is increased. And, a plurality of mounting holes are provided on the side wall of the sliding bearing along the circumferential direction of the sliding bearing, and an antifriction member is provided in the mounting hole, which has an advantage that the abrasion of the inner wall of the sliding bearing can be reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic structural diagram of a shield cutterhead provided by an embodiment of the present invention;
FIG. 2 shows a cross-sectional view of the shield hob of FIG. 1;
fig. 3 shows a schematic structural view of the plain bearing in fig. 2.
Wherein the figures include the following reference numerals:
10. a cutter head ring; 20. a knife beam; 21. a main cutter beam; 22. a secondary knife beam; 30. a shield hob; 31. a cutter body; 311. a cutter body; 3111. an annular groove; 3112. a step; 312. a cutter ring; 313. a retainer ring; 32. a cutter shaft; 33. a sliding bearing; 331. Mounting holes; 332. a circular ring section; 3321. a chip storage groove; 333. a cylinder section; 34. a first end cap; 35. a second end cap; 40. A slag guide plate; 50. a rib plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
As shown in fig. 1 to 3, an embodiment of the present invention provides a shield cutter head, which includes a cutter head ring 10, a cutter beam 20 and a shield hob 30, wherein the cutter beam 20 is disposed in the cutter head ring 10 and connected to the cutter head ring 10, the shield hob 30 is disposed on the cutter beam 20, the shield hob 30 includes a cutter body 31, a cutter shaft 32 and a sliding bearing 33, the cutter shaft 32 is disposed through the sliding bearing 33, the cutter body 31 is disposed on an outer wall of the sliding bearing 33, and an inner wall of the sliding bearing 33 is in clearance fit with an outer wall of the cutter shaft 32. The side wall of the sliding bearing 33 is provided with a plurality of mounting holes 331, the mounting holes 331 are arranged at intervals along the circumferential direction of the sliding bearing 33, wear reducing members are arranged in the mounting holes 331, and the end surfaces of the wear reducing members are flush with the inner wall of the sliding bearing 33, or the end surfaces of the wear reducing members protrude out of the inner wall of the sliding bearing 33.
By applying the technical scheme of the utility model, the shield hob 30 is arranged on the cutter beam 20 of the shield cutter head, the shield hob 30 comprises a cutter body 31, a cutter shaft 32 and a sliding bearing 33, the cutter body 31 is sleeved on the outer wall of the sliding bearing 33, the cutter shaft 32 is arranged on the sliding bearing 33 in a penetrating manner, the sliding bearing 33 provides bearing capacity for the cutter body 31, the cutter body 31 rotates and contacts with rocks to crush the rocks while the shield cutter head rotates, and the sliding bearing 33 can shorten the distance between the shield hobs as compared with the rolling bearing in the related technology, so that the aperture opening ratio of the shield cutter head can be increased, and the number of the shield hobs 30 in the cutter head with a certain size is increased. Further, a plurality of mounting holes 331 are provided in the side wall of the sliding bearing 33 along the circumferential direction of the sliding bearing 33, and a wear reducing member is provided in the mounting holes 331, which has an advantage that wear of the inner wall of the sliding bearing 33 can be reduced.
In the present embodiment, and an oil film is formed in the gap between the inner wall of the sliding bearing 33 and the outer wall of the cutter shaft 32, the oil film plays a role of lubrication in the rotation of the cutter body 31 and the sliding bearing 33 around the cutter shaft 32.
Specifically, in the present embodiment, the end surface of the wear reducing member is flush with the inner wall of the sliding bearing 33, and the wear reducing member does not excessively rub against the arbor 32.
In the present embodiment, the side wall of the sliding bearing 33 is provided with a plurality of mounting holes 331, the plurality of mounting holes 331 are arranged at intervals in the circumferential direction of the sliding bearing 33, that is, the plurality of mounting holes 331 are arranged in a plurality of turns in order on the side wall of the sliding bearing 33, the plurality of mounting holes 331 are arranged in each turn at intervals in the circumferential direction of the sliding bearing 33, and the plurality of mounting holes 331 are arranged in a row in order in the radial direction of the sliding bearing 33, and the plurality of mounting holes 331 are arranged in each row at intervals.
In this embodiment, the oil film between the inner wall of the sliding bearing 33 and the outer wall of the cutter shaft 32 has high continuous forming capability and pressure maintaining capability, so that the cutter body 31 can obtain higher bearing capacity, and the problem of eccentric wear of the shield hob, even breakage of the cutter shaft 32, caused by the phenomena of premature wear of the sliding bearing 33, breakage, rotation and failure of the sliding bearing 33, and the like in the working process of the shield hob is solved.
As shown in fig. 2 and 3, the sliding bearing 33 includes a ring section 332 and a cylinder section 333, an inner edge of the ring section 332 is connected to one end of the cylinder section 333, and a plurality of mounting holes 331 extend in a radial direction of the cylinder section 333 and penetrate through a sidewall of the cylinder section 333. The circular ring section 332 and the cylindrical section 333 are connected, so that the connecting structure is simple.
As shown in fig. 2 and 3, the circular ring section 332 is located outside the cutter body 31, the cylindrical section 333 is inserted between the cutter body 31 and the cutter shaft 32, and a side wall of the circular ring section 332 abuts against a side wall of the cutter body 31. The ring segment 332 can position the sliding bearing 33, the outer wall of the cylinder segment 333 abuts against and is in interference fit with the inner wall of the cutter body 31, the cylinder segment 333 is connected with the cutter body 31 and provides bearing capacity for the cutter body 31, and the cylinder segment 333 and the cutter body 31 rotate around the cutter shaft 32 together to crush rocks.
As shown in fig. 3, a plurality of chip storage slots 3321 are provided on a side of the circular ring segment 332 facing the cylindrical segment 333, the plurality of chip storage slots 3321 are spaced along the circumferential direction of the circular ring segment 332, and the plurality of chip storage slots 3321 extend along the radial direction of the circular ring segment 332 and penetrate through the outer edge of the circular ring segment 332. The sliding bearing 33 and the cutter shaft 32 can generate metal chips in the relative rotation process, the metal chips can be collected by the chip storage grooves 3321, the metal chips are prevented from entering an oil film formed by the sliding bearing 33 and the cutter shaft 32, and the performance of the shield hob is improved.
As shown in fig. 2, the shield hob 30 further includes a first end cover 34 and a second end cover 35, and the first end cover 34 and the second end cover 35 are respectively disposed at two sides of the cutter body 31. The first end cover 34 and the second end cover 35 can be used for pressing the corresponding sliding bearing 33, so that the sliding bearing 33 is prevented from being separated from the shield hobbing cutter 30.
Specifically, the shield hobbing cutter 30 comprises two sliding bearings 33 which are symmetrically arranged, a first end cover 34 is arranged on the outer side of the cutter body 31 and one of the sliding bearings 33 in a covering manner, a second end cover 35 is arranged on the outer side of the cutter body 31 and the other sliding bearing 33 in a covering manner, and the first end cover 34 and the second end cover 35 are in clearance fit with the side wall of the annular section 332. By adopting the structure, in the process that the sliding bearing 33 rotates relative to the first end cover 34 and the second end cover 35, oil films can be formed between the first end cover 34 and the side wall gap of the annular section 332 and between the second end cover 35 and the side wall gap of the annular section 332, and the oil films can play a role in lubrication.
In this embodiment, the cutter shaft 32 includes a first section and a second section that are connected to each other, the second section sequentially penetrates through two sliding bearings 33 that are symmetrically arranged, the second section is in clearance fit with the cylinder section 333, a first center hole is formed in the first end cover 34, the first section is inserted into the first center hole, the side walls of the second section and the circular ring section 332 are in clearance fit with the first end cover 34, the side wall of the second end cover 35 is in clearance fit with the side wall of the circular ring section 332, a second center hole is formed in the second end cover 35, the second section is inserted into the second center hole, a mounting seat is arranged on the cutter beam 20, an opening is formed in the side plate of the cutter beam 20, the mounting seat is located in the opening, the first end cover 34 and the second end cover 35 are both assembled to the mounting seat, and the cutter body 31 is exposed from the opening and protrudes out of the opening.
It should be noted that, by providing an oil seal, such as a floating oil seal, on the side surface of the cutter body 31, the sealing performance of the shield hob can be improved, and the leakage of the lubricating oil can be prevented, and the floating oil seal can automatically compensate after the end surface thereof is worn, so that the sealing reliability is enhanced. Meanwhile, an O-ring seal is provided between the cutter shaft 32 and the first end cap 34 to further prevent leakage of the lubricating oil.
Specifically, a protruding section is arranged on the second section of the cutter shaft 32, a circular sinking platform is arranged on the second end cover 35, the protruding section and the circular sinking platform are arranged in a penetrating mode to form limiting fit, a plurality of threaded holes are formed in the side wall, facing the first section, of the second section, a plurality of through holes are formed in the first end cover 34 corresponding to the threaded holes, bolts penetrate through the through holes in the first end cover 34 to be connected with the threaded holes, and the first end cover 34 and the second end cover 35 are connected with the cutter shaft 32.
As shown in fig. 2, the cutter body 31 includes a cutter body 311, a cutter ring 312 and a retaining ring 313, the cutter ring 312 is sleeved on the cutter body 311, the cutter body 311 is sleeved on the outer wall of the sliding bearing 33, the cutter ring 312 is in interference fit with the cutter body 311, and the cutter body 311 is in interference fit with the sliding bearing 33. The cutter body 311 is in interference fit with the cutter ring 312 and the sliding bearing 33 respectively, the cutter body 311, the cutter ring 312 and the sliding bearing 33 are connected into a whole, and the cutter body has the advantage of simple connection structure.
In this embodiment, the cutter body 311 is provided with a through hole communicating with both sides of the cutter body 311, through which the lubricant can flow, thereby balancing the amount of the lubricant on both sides of the cutter body 311.
As shown in fig. 2, the cutter body 311 has an annular groove 3111 and a step 3112 arranged at intervals, the annular groove 3111 and the step 3112 both extend in the circumferential direction of the cutter body 311, the retaining ring 313 is arranged in the annular groove 3111, and the cutter ring 312 is sandwiched between the retaining ring 313 and the step 3112. The mode that the cutter ring 312 is clamped between the retainer ring 313 and the step 3112 to fix the cutter ring 312 has the advantages of simple structure and convenience in assembly.
Specifically, the step 3112 includes a vertical connecting surface, one side of the cutter ring 312 abuts against the retaining ring 313, and the other side of the cutter ring 312 abuts against the vertical connecting surface.
As shown in fig. 1, the cutter bar 20 includes a plurality of main cutter bars 21 and a plurality of sub cutter bars 22, the plurality of main cutter bars 21 and the plurality of sub cutter bars 22 are arranged at intervals in the circumferential direction of the shield cutter head, and the shield hob 30 is arranged on the main cutter bars 21. By adopting the structure, the shield hobbing cutters 30 are uniformly distributed on the main cutter beam 21, so that the main cutter beam 21 can crush rocks in the same way, and the crushing capacity is enhanced.
In the present embodiment, the tool beam 20 includes four main tool beams 21 and four sub tool beams 22.
Specifically, the main blade beam 21 is a box-type structure, an opening is provided in a side plate of the main blade beam 21, the cutter ring 312 of the shield hob 30 protrudes through the opening, the sub blade beam 22 is a spoke-type structure, and another type of shield cutter, such as a cutter, is provided on the sub blade beam 22.
As shown in fig. 1, the shield cutterhead further includes a slag guide 40, the slag guide 40 is disposed on the main cutter beam 21, and the slag guide 40 is located at the side of the shield hobbing cutter 30 and extends along the circumferential direction of the shield cutterhead. The slag guide plate 40 can be used for discharging broken rock slag out of the shield cutter head along the slag guide plate 40, so that a large amount of rock slag is prevented from being attached to the shield cutter head.
In this embodiment, the shield cutterhead further comprises wear-resistant plates, the wear-resistant plates are arranged on the outer surfaces of the main knife beam 21 and the auxiliary knife beam 22, and the wear-resistant plates are adopted, so that the wear resistance of the shield cutterhead can be enhanced, and the service life of the shield cutterhead is prolonged. And the edge of the shield cutter head is provided with an arc area, and a wear-resistant alloy block is connected between the arc area and the cutter head ring 10, so that the wear resistance of the shield cutter head is further enhanced.
In particular, the wear-resistant plate can be a wear-resistant composite titanium steel plate.
As shown in fig. 1, the shield cutterhead further includes rib plates 50, the rib plates 50 are disposed between the adjacent main knife beam 21 and the adjacent auxiliary knife beam 22, the rib plates 50 are respectively connected with the main knife beam 21 and the auxiliary knife beam 22, and the rib plates 50 can enhance the connection strength of the main knife beam 21 and the auxiliary knife beam 22.
In the embodiment, a slag inlet size limiting grid is arranged between the main cutter beam 21 and the auxiliary cutter beam 22, and the slag inlet size limiting grid can prevent broken stones with larger diameters from entering the shield cutterhead.
It should be noted that the size of the sliding bearing shield hob can increase as the diameter of the shield cutterhead increases.
The shield cutter head provided by the embodiment has the following beneficial effects:
1) compared with the rolling bearing in the related art, the sliding bearing 33 has the advantages that the size is reduced, the space between the shield hobbing cutters is shortened, the opening rate of the shield cutterhead can be increased, and the number of the shield hobbing cutters 30 in the cutterhead with a certain size is increased;
2) a wear reducing member is provided in the mounting hole 331 of the sliding bearing 33, and has an advantage that wear of the inner wall of the sliding bearing 33 can be reduced;
3) the oil film between the inner wall of the sliding bearing 33 and the outer wall of the cutter shaft 32 has higher continuous forming capability and pressure maintaining capability, so that the cutter body 31 can obtain higher bearing capacity, and the problems of eccentric wear of the shield hob and even breakage of the cutter shaft 32 caused by the phenomena of premature wear of the sliding bearing 33, breakage, rotation and failure of the sliding bearing 33 and the like in the working process of the shield hob are solved;
4) the circular ring segment 332 is provided with a plurality of chip storage grooves 3321, and metal chips can be collected by adopting the chip storage grooves 3321, so that the metal chips are prevented from entering an oil film formed by the sliding bearing 33 and the cutter shaft 32, and the performance of the shield hobbing cutter is improved;
5) in the process that the sliding bearing 33 rotates relative to the first end cover 34 and the second end cover 35, oil films can be formed between the first end cover 34 and the side wall gap of the annular section 332 and between the second end cover 35 and the side wall gap of the annular section 332, and the oil films can play a role in lubrication;
6) the cutter body 311, the cutter ring 312 and the sliding bearing 33 are connected into a whole in a mode that the cutter body 311 is in interference fit with the cutter ring 312 and the sliding bearing 33 respectively, so that the cutter has the advantage of simple connection structure;
7) the broken rock slag can be discharged out of the shield cutter head along the slag guide plate 40 by adopting the slag guide plate 40, so that a large amount of rock slag is not attached to the shield cutter head;
8) a slag inlet size limiting grid is arranged between the main cutter beam 21 and the auxiliary cutter beam 22, and can prevent broken stones with larger diameters from entering the shield cutter head;
9) the rib plate 50 is arranged between the adjacent main cutter beam 21 and the adjacent auxiliary cutter beam 22, the rib plate 50 is respectively connected with the main cutter beam 21 and the auxiliary cutter beam 22, and the rib plate 50 can enhance the connection strength of the main cutter beam 21 and the auxiliary cutter beam 22;
10) the shield cutter head further comprises wear-resistant plates, the wear-resistant plates are arranged on the outer surfaces of the main cutter beam 21 and the auxiliary cutter beam 22, the wear-resistant plates are adopted, the wear resistance of the shield cutter head can be enhanced, and the service life of the shield cutter head is prolonged.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a shield constructs blade disc, its characterized in that, the shield constructs the blade disc and includes:
a cutter head ring (10);
the cutter beam (20) is arranged in the cutter head circular ring (10) and connected with the cutter head circular ring (10);
the shield hob (30) is arranged on the cutter beam (20), the shield hob (30) comprises a hob body (31), a hob shaft (32) and a sliding bearing (33), the hob shaft (32) penetrates through the sliding bearing (33), the hob body (31) is sleeved on the outer wall of the sliding bearing (33), and the inner wall of the sliding bearing (33) is in clearance fit with the outer wall of the hob shaft (32);
the side wall of the sliding bearing (33) is provided with a plurality of mounting holes (331), the mounting holes (331) are arranged at intervals along the circumferential direction of the sliding bearing (33), antifriction parts are arranged in the mounting holes (331), the end faces of the antifriction parts are flush with the inner wall of the sliding bearing (33), or the end faces of the antifriction parts protrude out of the inner wall of the sliding bearing (33).
2. A shield cutterhead according to claim 1, characterized in that the sliding bearing (33) comprises a circular ring section (332) and a cylindrical section (333), the inner edge of the circular ring section (332) being connected to one end of the cylindrical section (333), and a plurality of mounting holes (331) extending in the radial direction of the cylindrical section (333) and penetrating through the side wall of the cylindrical section (333).
3. The shield cutterhead according to claim 2, wherein the circular ring segment (332) is located outside the cutter body (31), the cylindrical segment (333) is inserted between the cutter body (31) and the cutter shaft (32), the side wall of the circular ring segment (332) abuts against the side wall of the cutter body (31), and the outer wall of the cylindrical segment (333) abuts against and is in interference fit with the inner wall of the cutter body (31).
4. The shield cutterhead according to claim 2, wherein a side of the circular ring section (332) facing the cylindrical section (333) is provided with a plurality of chip storage slots (3321), the plurality of chip storage slots (3321) are arranged at intervals along the circumferential direction of the circular ring section (332), and the plurality of chip storage slots (3321) extend along the radial direction of the circular ring section (332) and penetrate through the outer edge of the circular ring section (332).
5. The shield cutterhead of claim 2,
the shield hobbing cutter (30) further comprises a first end cover (34) and a second end cover (35), wherein the first end cover (34) and the second end cover (35) are respectively arranged on two sides of the cutter body (31);
the shield constructs hobbing cutter (30) and includes that two symmetries set up slide bearing (33), first end cover (34) lid is established cutter body (31) and one of them the outside of slide bearing (33), second end cover (35) lid is established cutter body (31) and another the outside of slide bearing (33), first end cover (34) with second end cover (35) all with the lateral wall clearance fit of ring section (332).
6. The shield cutterhead of claim 1,
the cutter body (31) comprises a cutter body (311), a cutter ring (312) and a retainer ring (313), the cutter ring (312) is sleeved on the cutter body (311), the cutter body (311) is sleeved on the outer wall of the sliding bearing (33), the cutter ring (312) is in interference fit with the cutter body (311), and the cutter body (311) is in interference fit with the sliding bearing (33);
cutter body (311) have annular groove (3111) and step (3112) that the interval set up, annular groove (3111) with step (3112) all follow the circumference of cutter body (311) extends, retaining ring (313) set up in annular groove (3111), cutter ring (312) press from both sides and establish retaining ring (313) with between step (3112).
7. The shield cutterhead according to claim 1, wherein said cutter beams (20) include a plurality of main cutter beams (21) and a plurality of auxiliary cutter beams (22), said plurality of main cutter beams (21) and said plurality of auxiliary cutter beams (22) being spaced circumferentially of said shield cutterhead, said shield hobbing cutters (30) being disposed on said main cutter beams (21).
8. The shield cutterhead of claim 7, further comprising a slag deflector (40), wherein the slag deflector (40) is disposed on the main cutter beam (21), and the slag deflector (40) is located on the side of the shield hob (30) and extends in the circumferential direction of the shield cutterhead.
9. The shield cutterhead according to claim 7, further comprising wear plates disposed on the outer surfaces of the main cutter beam (21) and the auxiliary cutter beam (22).
10. The shield cutterhead according to claim 7, further comprising a rib plate (50), wherein the rib plate (50) is arranged between the adjacent main cutter beam (21) and the auxiliary cutter beam (22), and the rib plate (50) is connected with the main cutter beam (21) and the auxiliary cutter beam (22) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122707470.XU CN216553922U (en) | 2021-11-05 | 2021-11-05 | Shield cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122707470.XU CN216553922U (en) | 2021-11-05 | 2021-11-05 | Shield cutter head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216553922U true CN216553922U (en) | 2022-05-17 |
Family
ID=81572011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122707470.XU Active CN216553922U (en) | 2021-11-05 | 2021-11-05 | Shield cutter head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216553922U (en) |
-
2021
- 2021-11-05 CN CN202122707470.XU patent/CN216553922U/en active Active
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