CN214660185U - Integrated shaft type duplex hobbing cutter - Google Patents
Integrated shaft type duplex hobbing cutter Download PDFInfo
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- CN214660185U CN214660185U CN202023177503.6U CN202023177503U CN214660185U CN 214660185 U CN214660185 U CN 214660185U CN 202023177503 U CN202023177503 U CN 202023177503U CN 214660185 U CN214660185 U CN 214660185U
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- cutter
- hub
- end cover
- shaft
- hob
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Abstract
The utility model belongs to the technical field of tunnel excavation construction equipment. An integrated shaft type duplex hob comprises a hob shaft, a left hob hub, a right hob hub, a middle gasket, a first floating seal, a first end cover and a second end cover, wherein the left hob hub is sleeved on the hob shaft through a first bearing; the right cutter hub is sleeved on the cutter shaft through a second bearing, the left cutter hub and the right cutter hub are arranged side by side, and cutter rings are arranged on the left cutter hub and the right cutter hub; the middle washer is sleeved on the cutter shaft in a matching manner, and two sides of the middle washer are respectively attached to the inner ring of the corresponding first bearing and the inner ring of the corresponding second bearing; the first floating seal is arranged between the left cutter hub and the right cutter hub; the first end cover is arranged on the outer side of the left cutter hub; the second end cover is arranged on the outer side of the right cutter hub, and second floating seals are arranged between the first end cover and the left cutter hub and between the second end cover and the right cutter hub. The double-hob cutter ring has smaller assembly distance, so that the crushing effect of the hob cutter ring is improved, the stress in the middle of the double hob cutter is optimized, and the service life is prolonged.
Description
Technical Field
The utility model belongs to the technical field of tunneling construction equipment, concretely relates to shaft type duplex hobbing cutter of an organic whole.
Background
At present, tunnel projects such as urban subway tunnels, diversion tunnels, cross-river and sea-crossing tunnels, railway tunnels, highway tunnels, municipal pipelines and the like in China need a large amount of shield and TBM related tunneling equipment. The shield method has the advantages of simple construction process, high speed, high tunneling quality, safety, environmental protection, no need of ground excavation in construction, no obstruction to traffic, no generation of excessive noise and vibration, little influence on the surrounding environment, great advantages in economic and environmental protection, tooth breaking of a hob of the heading machine, direct interaction with rock mass as the most critical part in the hob, and the most energy-consuming part in the hob.
The central hob currently used in shield or TBM is mainly an end cap type duplex hob, as shown in fig. 1. The hob is large in size and large in cutter spacing, two independent hobs are spliced together equivalently, the processing accuracy is guaranteed as far as possible, errors cannot be avoided, and the hob ring cannot be guaranteed to contact with rocks simultaneously. The middle part is stressed greatly, and the service life of the cutter shaft is greatly influenced.
The patent in the aspect of inquiring current center hobbing cutter, the form of current center hobbing cutter is end cover formula duplex hobbing cutter. The existing central hobbing cutters used for the shield/TBM are duplex hobbing cutters, the hobbing cutters are large in size, difficult to install and large in cutter spacing, and the requirement for smaller cutter spacing to achieve the optimal rock breaking specific energy cannot be met when the rock strength is higher. The end cover type center duplex hob is equivalent to two independent hobs which are spliced together, even if the processing is very accurate, errors can not be completely avoided, and the hob ring can not be ensured to contact with rocks simultaneously. The middle part is stressed greatly, and the service life of the cutter shaft is greatly influenced. In the tunneling process of the end cover type duplex hob, as the two relatively independent hobs are combined together, the vibration amplitude is large, and the risk of failure of the hob is increased.
Disclosure of Invention
The utility model discloses the purpose is to the problem that above-mentioned exists with not enough, provides a shaft type duplex hobbing cutter of an organic whole, its structural design is reasonable, has less assembly interval to improve the crushing effect of hobbing cutter sword circle, and optimize the atress at duplex hobbing cutter middle part, improve life.
In order to realize the purpose, the adopted technical scheme is as follows:
an integral shaft type duplex hob comprising:
a cutter shaft;
the left cutter hub is sleeved on the cutter shaft through a first bearing;
the right cutter hub is sleeved on the cutter shaft through a second bearing, the left cutter hub and the right cutter hub are arranged side by side, and cutter rings are arranged on the left cutter hub and the right cutter hub;
the middle gasket is sleeved on the cutter shaft in a matching manner, and two sides of the middle gasket are respectively attached to the corresponding inner ring of the first bearing and the inner ring of the second bearing;
a first floating seal disposed between the left hub and the right hub;
a first end cap disposed outside of the left hub; and
and the second end cover is arranged on the outer side of the right cutter hub, and second floating seals are arranged between the first end cover and the left cutter hub and between the second end cover and the right cutter hub.
According to the utility model discloses an axle type duplex hobbing cutter, preferably, be provided with two first bearings between left side sword hub and the arbor, be provided with two second bearings between right side sword hub and the arbor, be provided with first space ring between two first bearings, be provided with the second space ring between two second bearings.
According to the utility model discloses an axle type duplex hobbing cutter, preferably, first bearing with the second bearing is single-row tapered roller bearing.
According to the utility model discloses an axle type duplex hobbing cutter, preferably, the left end of arbor is provided with the assembly shaft shoulder, first end cover matches the laminating setting and is in on the first shaft shoulder, just be provided with the sealing washer between first end cover and the arbor.
According to the utility model discloses a shaft type duplex hobbing cutter, preferably, the second end cover sets up with the inner circle laminating of the second bearing that corresponds, just be provided with the sealing washer between the inner circle of second end cover and second bearing be provided with on the arbor in the second end cover outside and put the loose piece.
According to the utility model discloses an axle type duplex hobbing cutter, preferably, wherein one end of arbor is provided with the oiling passageway, form sealed chamber between left side sword hub, right sword hub, arbor, first end cover, the second end cover, the oiling passageway with sealed chamber intercommunication the outer tip of oiling passageway is provided with balanced valve and end cap, first end cover with be provided with oilhole and oil plug on the second end cover.
According to the utility model discloses an integrative shaft type duplex hobbing cutter, preferably, be provided with the sealing washer between balanced valve and the oiling passageway, the outer tip of oiling passageway is provided with the heavy platform of assembly that corresponds with the end cap, the interior tip of end cap and assembly are provided with gasket and wire net between heavy platform.
According to the utility model discloses an integrative shaft type duplex hobbing cutter, preferably, inboard and the inboard setting of staggering of right sword hub of left sword hub.
By adopting the technical scheme, the beneficial effects are as follows:
this application reaches the purpose of high life, high tunnelling efficiency through designing the integrative pair hobbing cutter of shaft type that shield constructs quick-witted/TBM used, through designing innovation center hobbing cutter overall structure.
The utility model provides an integrative pair hobbing cutter of shaft type, central pair hobbing cutter volume diminishes, and the function does not change. The sword interval reduces, and when faced the higher stratum of unipolar compressive strength, the less sword interval can form the penetrability crackle more easily, guarantees the high efficiency and the stability of construction. Through the design of the interacting cutter hub and the floating seal, the movement coordination of the hob is ensured, and the vibration amplitude is smaller. Through the design of the shaft type integrated duplex hob, the two hob bodies are combined, the structural strength of the hob bodies is increased, and the integrated duplex hob is more suitable for heavy-load construction working conditions. Through optimizing structural design, not only can improve the efficiency of construction, increased the tool changing cycle, reduced construction cost, the inner structure of while duplex hobbing cutter has reduced the accessory, has reduced the manufacturing cost and the energy loss of hobbing cutter.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.
Fig. 1 is a schematic structural diagram of a duplex hob in the prior art.
Fig. 2 is a schematic structural diagram of an integrated shaft type duplex hob according to the embodiment of the present invention.
Number in the figure:
101 is a cutter shaft, 102 is a left cutter hub, 103 is a right cutter hub, 104 is a cutter ring, 105 is a first bearing, 106 is a second bearing, 107 is a middle gasket, 108 is a first floating seal, 109 is a first end cover, 110 is a second end cover, 111 is a second floating seal, 112 is a first spacing ring, 113 is a second spacing ring, 114 is a sealing ring, 115 is a loosening block, 116 is an oil injection channel, 117 is a balance valve, 118 is a plug, 119 is an oil plug, 120 is a gasket, and 121 is a steel wire mesh.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art.
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for describing various elements of the present invention, and do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that intervening elements may be present therebetween; i.e., positional relationships encompassing both direct and indirect connections.
It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", and the like, are used only for indicating relative positional relationship, which is for convenience of describing the present invention, and not that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object to be described is changed, the relative positional relationship may also be changed accordingly.
Referring to fig. 2, the application discloses an integrated shaft type duplex hob, which comprises a hob shaft 101, a left cutter hub 102, a right cutter hub 103, a middle gasket 107, a first floating seal 108, a first end cover 109 and a second end cover 110, wherein the left cutter hub 102 is sleeved on the hob shaft 101 through a first bearing 105; the right cutter hub 103 is sleeved on the cutter shaft 101 through a second bearing 106, the left cutter hub 102 and the right cutter hub 103 are arranged side by side, and cutter rings 104 are arranged on the left cutter hub 102 and the right cutter hub 103; the middle gasket 107 is sleeved on the cutter shaft 101 in a matching manner, and two sides of the middle gasket 107 are respectively attached to the inner ring of the corresponding first bearing 105 and the inner ring of the corresponding second bearing 106; a first floating seal 108 is disposed between the left hub 102 and the right hub 103; the first end cap 109 is disposed outside the left hub 102; the second end cover 110 is arranged on the outer side of the right cutter hub 103, and second floating seals 111 are arranged between the first end cover 109 and the left cutter hub 102 and between the second end cover 110 and the right cutter hub 103.
Preferably, two first bearings 105 are arranged between the left tool hub 102 and the cutter shaft 101, two second bearings 106 are arranged between the right tool hub 103 and the cutter shaft 101, a first spacer 112 is arranged between the two first bearings 105, and a second spacer 113 is arranged between the two second bearings 106.
Further, the first bearing 105 and the second bearing 106 in the present embodiment each employ a single row tapered roller bearing.
For the convenience of assembly, in the present embodiment, an assembly shoulder is disposed at the left end of the cutter shaft 101, the first end cap 109 is disposed on the first shoulder in a matching and fitting manner, and a sealing ring 114 is disposed between the first end cap 109 and the cutter shaft 101. The second end cap 110 is attached to the inner ring of the corresponding second bearing 106, a seal ring 114 is disposed between the second end cap 110 and the inner ring of the second bearing 106, and a loosening block 115 is disposed on the cutter shaft 101 outside the second end cap 110.
In this embodiment, an oil injection channel 116 is further disposed at one end of the cutter shaft 101, a sealed cavity is formed between the left cutter hub 102, the right cutter hub 103, the cutter shaft 101, the first end cap 109 and the second end cap 110, the oil injection channel 116 is communicated with the sealed cavity, a balance valve 117 and a plug 118 are disposed at an outer end portion of the oil injection channel 116, and an oil hole and an oil plug 119 are disposed on the first end cap 109 and the second end cap 110. Further, in this embodiment, a sealing ring 114 is disposed between the balance valve 117 and the oil filling channel 116, an assembly sinking platform corresponding to the plug is disposed at an outer end of the oil filling channel, and a gasket 120 and a steel wire mesh 121 are disposed between an inner end of the plug 118 and the assembly sinking platform. Thereby realizing the assembly structure of the part.
As shown in the drawings, the inner side of the left cutter hub 102 and the inner side of the right cutter hub 103 of the present application are arranged in a staggered manner, that is, an annular sunken groove is arranged on one of the left cutter hub and the right cutter hub, and an annular boss is arranged on the other of the left cutter hub and the right cutter hub, so that the sunken groove and the boss are aligned, and a partial overlap is formed between the left cutter hub and the right cutter hub.
This application reaches the purpose of high life, high tunnelling efficiency through designing the integrative pair hobbing cutter of shaft type that shield constructs quick-witted/TBM used, through designing innovation center hobbing cutter overall structure.
The utility model provides an integrative pair hobbing cutter of shaft type, central pair hobbing cutter volume diminishes, and the function does not change. The sword interval reduces, and when faced the higher stratum of unipolar compressive strength, the less sword interval can form the penetrability crackle more easily, guarantees the high efficiency and the stability of construction. Through the design of the interacting cutter hub and the floating seal, the movement coordination of the hob is ensured, and the vibration amplitude is smaller. Through the design of the shaft type integrated duplex hob, the two hob bodies are combined, the structural strength of the hob bodies is increased, and the integrated duplex hob is more suitable for heavy-load construction working conditions. Through optimizing structural design, not only can improve the efficiency of construction, increased the tool changing cycle, reduced construction cost, the inner structure of while duplex hobbing cutter has reduced the accessory, has reduced the manufacturing cost and the energy loss of hobbing cutter.
While the above description has described in detail the preferred embodiments for carrying out the invention, it should be understood that these embodiments are presented by way of example only, and are not intended to limit the scope, applicability, or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many modifications may be made to the foregoing embodiments by those skilled in the art in light of the teachings of the present disclosure, and such modifications are intended to be within the scope of the present disclosure.
Claims (8)
1. An integral shaft type duplex hob, characterized in that, includes:
a cutter shaft;
the left cutter hub is sleeved on the cutter shaft through a first bearing;
the right cutter hub is sleeved on the cutter shaft through a second bearing, the left cutter hub and the right cutter hub are arranged side by side, and cutter rings are arranged on the left cutter hub and the right cutter hub;
the middle gasket is sleeved on the cutter shaft in a matching manner, and two sides of the middle gasket are respectively attached to the corresponding inner ring of the first bearing and the inner ring of the second bearing;
a first floating seal disposed between the left hub and the right hub;
a first end cap disposed outside of the left hub; and
and the second end cover is arranged on the outer side of the right cutter hub, and second floating seals are arranged between the first end cover and the left cutter hub and between the second end cover and the right cutter hub.
2. The integrated shaft type duplex hob according to claim 1, wherein two first bearings are arranged between the left cutter hub and the cutter shaft, two second bearings are arranged between the right cutter hub and the cutter shaft, a first space ring is arranged between the two first bearings, and a second space ring is arranged between the two second bearings.
3. The integrated shaft type duplex hob of claim 1 or 2, characterized in that the first bearing and the second bearing are both single row tapered roller bearings.
4. The integrated shaft type duplex hob according to claim 1, wherein a first shaft shoulder is provided at a left end of the hob shaft, the first end cover is fittingly attached to the first shaft shoulder, and a sealing ring is provided between the first end cover and the hob shaft.
5. The integrated shaft type duplex hob according to claim 1 or 4, wherein the second end cover is attached to the inner ring of the corresponding second bearing, a sealing ring is arranged between the second end cover and the inner ring of the second bearing, and a loosening block is arranged on the hob shaft outside the second end cover.
6. The integrated shaft type duplex hob according to claim 1, wherein an oil injection channel is provided at one end of the arbor, a sealing cavity is formed between the left hub, the right hub, the arbor, the first end cover and the second end cover, the oil injection channel is communicated with the sealing cavity, a balance valve and a plug are provided at an outer end of the oil injection channel, and an oil hole and an oil plug are provided on the first end cover and the second end cover.
7. The integrated shaft type duplex hob according to claim 6, wherein a sealing ring is arranged between the balance valve and the oil injection channel, an assembly sinking platform corresponding to the plug is arranged at the outer end of the oil injection channel, and a gasket and a steel wire mesh are arranged between the inner end of the plug and the assembly sinking platform.
8. The integrated shaft type duplex hob according to claim 1, wherein the inner sides of the left and right cutter hubs are arranged in a staggered manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023177503.6U CN214660185U (en) | 2020-12-25 | 2020-12-25 | Integrated shaft type duplex hobbing cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023177503.6U CN214660185U (en) | 2020-12-25 | 2020-12-25 | Integrated shaft type duplex hobbing cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660185U true CN214660185U (en) | 2021-11-09 |
Family
ID=78502731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023177503.6U Active CN214660185U (en) | 2020-12-25 | 2020-12-25 | Integrated shaft type duplex hobbing cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214660185U (en) |
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2020
- 2020-12-25 CN CN202023177503.6U patent/CN214660185U/en active Active
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