CN208441845U - A kind of sliding bearing formula shield machine roller cutter - Google Patents
A kind of sliding bearing formula shield machine roller cutter Download PDFInfo
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- CN208441845U CN208441845U CN201821016738.7U CN201821016738U CN208441845U CN 208441845 U CN208441845 U CN 208441845U CN 201821016738 U CN201821016738 U CN 201821016738U CN 208441845 U CN208441845 U CN 208441845U
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- sliding bearing
- end cap
- knife hub
- cutter shaft
- cutter
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Abstract
The utility model discloses a kind of sliding bearing formula shield machine roller cutter, solve the problems, such as that hobboing cutter discontinuity, service life are short, ineffective in the prior art.The utility model includes knife hub, cutter shaft and cutter ring, the cutter ring is fixed on the excircle of knife hub, the inside of knife hub is equipped with left sliding bearing and right sliding bearing, cutter shaft is located inside left sliding bearing and right sliding bearing, the two sides of knife hub are stretched out at the both ends of cutter shaft respectively, the left end of cutter shaft is connected by left end cap with knife hub, the right end of cutter shaft is connected by right end cap with knife hub, pressure relief opening is equipped on left end cap and right end cap, it is equipped with pressure in pressure relief opening and discharges plug cock, seal assembly is equipped between left end cap and knife hub and between right end cap and knife hub.The utility model carries out cure process by the surface matched to cutter shaft and knife hub with sliding bearing, improves the intensity and hardness of cutter shaft and knife hub, improves reusability, reduces the use cost of cutter shaft and knife hub.
Description
Technical field
The utility model relates to shield machine cutter technical fields, particularly relate to a kind of sliding bearing formula shield machine roller cutter.
Background technique
In underground engineering field, shield construction using more and more extensive.Tunnel piercing of the shield method in hard rock section
It is widely used.Main cutting element of the flange-type hob as full face rock tunnel boring machine is directly to contact with rock, landwaste
Component, it is easy to wear under strong impact and the operating condition of high abrasion and need replacement in time.
Traditional shield machine roller cutter mostly uses rolling bearing, and strong impact and vibration are subjected in rock break-off process, causes
The phenomenon that displacement of hobboing cutter cutter hub, bearing damage frequent occurrence, the phenomenon that being easy to appear hobboing cutter premature failure, to need frequently more
The shield hobboing cutter renewed.China Patent No. 201310211543.3, a kind of patent name: center bigeminal hobs of heading machine design side
Method and China Patent No. 201410089333.6, a kind of patent name: completely new type sliding bearing formula hob cutter for shield machine revolution knot
It is proposed the technical solution for replacing existing rolling bearing using sliding bearing in structure, reduces cutter bearing and seal failure
Probability and the use cost for reducing hobboing cutter, but do not consider in above-mentioned patent sliding bearing by hobboing cutter cutter shaft after greater impact and
Knife hub problem easy to damage, while hobboing cutter knife hub internal pressure caused by the raising of sliding bearing hobboing cutter internal temperature is not considered yet
The problem of changing, causing hobboing cutter premature failure.
Utility model content
For the deficiency in above-mentioned background technique, the utility model proposes a kind of sliding bearing formula shield machine roller cutters, solve
Hobboing cutter discontinuity, service life is short in the prior art, ineffective problem.
The technical solution of the utility model is achieved in that a kind of sliding bearing formula shield machine roller cutter, including knife hub, knife
Axis and cutter ring, the cutter ring are fixed on the excircle of knife hub, and the inside of knife hub is equipped with left sliding bearing and right sliding axle
Hold, left sliding bearing and right sliding bearing are symmetrical arranged, cutter shaft be located at left sliding bearing and right sliding bearing inside and respectively with
Left sliding bearing and right sliding bearing match, and the two sides of knife hub are stretched out at the both ends of cutter shaft respectively, and the left end of cutter shaft passes through left end
Lid is connected with knife hub, and the right end of cutter shaft is connected by right end cap with knife hub, is equipped with pressure on left end cap and right end cap and is released
Discharge hole, the interior pressure that is equipped with of pressure relief opening discharge plug cock, are equipped between left end cap and knife hub and between right end cap and knife hub close
Sealing assembly.
The cutter shaft is equipped with axially extending bore and radial through-hole, and axially extending bore is connected with radial through-hole, radial through-hole
Outer end is equipped with regulating valve.
Anti-rotation fixture block, cutter shaft and left sliding bearing are equipped between the cutter shaft and left end cap and between cutter shaft and right end cap
Between be equipped with O-ring seal, O-ring seal also is provided between cutter shaft and right end cap.
The left sliding bearing and right sliding bearing are external flanging type sliding bearing, and the flanging of left sliding bearing passes through
Left holding screw is connected with knife hub, and the flanging of right sliding bearing is connected by right holding screw with knife hub.
Left gasket, the flanging and right end of right sliding bearing are equipped between the flanging and left end cap of the left sliding bearing
Right gasket is equipped between lid.
The left gasket and right gasket are copper alloy gasket.
The right end of the left end cap is tapered surface, and cavity, cavity and pressure relief opening phase are formed between left end cap and knife hub
Connection.
The left end of the right end cap is tapered surface, and cavity, cavity and pressure relief opening phase are formed between right end cap and knife hub
Connection.
The utility model carries out cure process by the surface matched to cutter shaft and knife hub with sliding bearing, improves cutter shaft
With the intensity and hardness of knife hub, reusability is improved, reduces the use cost of cutter shaft and knife hub.Using the sliding of grease lubrication mode
Cutter hub internal temperature increases bearing hobboing cutter in use, and pressure increases, and passes through setting axially extending bore, radial through-hole and pressure
Plug cock is discharged to reduce pressure, is improved the service life of sliding bearing, and then reduce construction cost, is reduced cutter changing number,
Improve working efficiency.
Detailed description of the invention
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of the utility model embodiment
It is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the utility model whole interior structural schematic diagram.
Fig. 2 is A direction view in Fig. 1.
Fig. 3 is partial enlarged view at C in Fig. 1.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are under that premise of not paying creative labor
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1-3, embodiment 1, a kind of sliding bearing formula shield machine roller cutter, including knife hub 3, cutter shaft 1 and cutter ring 4,
The surface of cutter shaft 1 carries out Carburization Treatment, it is desirable that surface hardness is in HRC56 or more；The inner surface of knife hub 3 carries out Nitrizing Treatment,
Ask surface hardness in HV500 or more.The cutter ring 4 is fixed on the excircle of knife hub 3, and the inside of knife hub 3 is equipped with left cunning
Dynamic bearing 13 and right sliding bearing 9, left sliding bearing 13 and right sliding bearing 9 are symmetrical arranged, left sliding bearing 13 and right sliding
Bearing 9 and knife hub synchronize movement, cutter shaft 1 be located inside left sliding bearing 13 and right sliding bearing 9 and respectively with left sliding
Bearing 13 and right sliding bearing 9 match, and the two sides of knife hub 3 are stretched out at the both ends of cutter shaft 1 respectively, and the left end of cutter shaft 1 passes through left end
Lid 2 is connected with knife hub 3, and the right end of cutter shaft 1 is connected by right end cap 6 with knife hub 3, left end cap 2 and right end cap 6 respectively with knife
Hub is connected through a screw thread.It is equipped with pressure relief opening 17 on left end cap 2 and right end cap 3, is released in pressure relief opening 17 equipped with pressure
Bleeder plug 7 opens pressure and discharges plug cock, discharge to the pressure in cutter shaft, play the role of decompression when pressure is excessive.
It is equipped with seal assembly 5 between left end cap 2 and knife hub 3 and between right end cap 6 and knife hub 3, seal assembly 5 can float setting, mention
Its high leakproofness.
Further, the cutter shaft 1 is equipped with axially extending bore 18 and radial through-hole 19, axially extending bore 18 and sliding bearing and knife
Gap between axis is connected, and radial through-hole 19 is communicated with the outside, and axially extending bore 18 is connected with radial through-hole 19, radial logical
The outer end in hole 19 is equipped with regulating valve 14, when the hypertonia between cutter shaft and sliding bearing, opens regulating valve, plays decompression
Purpose.Pressure regulation spectrum is 2bar, and when being greater than 2bar with external pressure difference inside hobboing cutter, regulating valve is opened.The knife
It is equipped with anti-rotation fixture block 12 between axis 1 and left end cap 2 and between 1 right end cap 6 of cutter shaft, is set between cutter shaft 1 and left sliding bearing 13
There is O-ring seal 8, O-ring seal 8 also is provided between cutter shaft 1 and right end cap 6, improves the leakproofness of device entirety.
Embodiment 2, a kind of sliding bearing formula shield machine roller cutter, the left sliding bearing 13 and right sliding bearing 9 are outer
The flanging of flanging type sliding bearing, left sliding bearing 13 is connected by left holding screw 15 with knife hub 3, right sliding bearing 9
Flanging be connected with knife hub 3 by right holding screw 10；It can bear biggish radial load but also bear axial load,
Right sliding bearing 9, left sliding bearing 13 can be moved synchronously with knife hub.The flanging and left end cap 2 of the left sliding bearing 13
Between be equipped with left gasket 16, between the flanging and right end cap 6 of right sliding bearing 9 be equipped with right gasket 11.16 He of left gasket
Right gasket 11 is copper alloy gasket.Left end cap 2 and left sliding bearing 13 and right end cap 6 and right sliding bearing can be effectively prevented
Relative friction between 9, protection left end cap 2, right end cap 6, left sliding bearing 13 and right sliding bearing 9.
Further, the right end of the left end cap 2 is tapered surface, and cavity, cavity and pressure are formed between left end cap 2 and knife hub 3
Power relief hole 17 is connected.The left end of the right end cap 6 is tapered surface, forms cavity between right end cap 6 and knife hub 3, cavity with
Pressure relief opening 17 is connected.Using the sliding bearing hobboing cutter cutter hub internal temperature liter in use of grease lubrication mode
Height, pressure increase, and influence sliding bearing hobboing cutter service life, by the pressure relief opening and axially extending bore that are connected with cavity and
Radial through-hole is depressured in real time, improves the service life of sliding bearing, reduces cutter changing number, and then reduce and be constructed into
This.
Other structures are same as Example 1.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (8)
1. a kind of sliding bearing formula shield machine roller cutter, including knife hub (3), cutter shaft (1) and cutter ring (4), it is characterised in that: the knife
Circle (4) is fixed on the excircle of knife hub (3), and the inside of knife hub (3) is equipped with left sliding bearing (13) and right sliding bearing
(9), left sliding bearing (13) and right sliding bearing (9) are symmetrical arranged, and cutter shaft (1) is located at left sliding bearing (13) and right sliding axle
It holds (9) inside and is matched respectively with left sliding bearing (13) and right sliding bearing (9), knife is stretched out at the both ends of cutter shaft (1) respectively
The left end of the two sides of hub (3), cutter shaft (1) is connected by left end cap (2) with knife hub (3), and the right end of cutter shaft (1) passes through right end cap
(6) it is connected with knife hub (3), is equipped with pressure relief opening (17) on left end cap (2) and right end cap (6), pressure relief opening (17)
It is interior to be equipped with pressure release plug cock (7), it is equipped between left end cap (2) and knife hub (3) and between right end cap (6) and knife hub (3) close
Sealing assembly (5).
2. sliding bearing formula shield machine roller cutter according to claim 1, it is characterised in that: the cutter shaft (1) is equipped with axis
To through-hole (18) and radial through-hole (19), axially extending bore (18) is connected with radial through-hole (19), the outer end of radial through-hole (19)
Portion is equipped with regulating valve (14).
3. sliding bearing formula shield machine roller cutter according to claim 2, it is characterised in that: the cutter shaft (1) and left end cap
(2) it is equipped with anti-rotation fixture block (12) between and between cutter shaft (1) and right end cap (6), between cutter shaft (1) and left sliding bearing (13)
Equipped with O-ring seal (8), O-ring seal (8) also are provided between cutter shaft (1) and right end cap (6).
4. sliding bearing formula shield machine roller cutter according to claim 1, it is characterised in that: the left sliding bearing (13) and
Right sliding bearing (9) is external flanging type sliding bearing, the flanging of left sliding bearing (13) by left holding screw (15) with
Knife hub (3) is connected, and the flanging of right sliding bearing (9) is connected by right holding screw (10) with knife hub (3).
5. sliding bearing formula shield machine roller cutter according to claim 4, it is characterised in that: the left sliding bearing (13)
Left gasket (16) are equipped between flanging and left end cap (2), are equipped between the flanging and right end cap (6) of right sliding bearing (9)
Right gasket (11).
6. sliding bearing formula shield machine roller cutter according to claim 5, it is characterised in that: the left gasket (16) and right pad
Piece (11) is copper alloy gasket.
7. sliding bearing formula shield machine roller cutter according to claim 1, it is characterised in that: the right end of the left end cap (2)
For tapered surface, cavity is formed between left end cap (2) and knife hub (3), cavity is connected with pressure relief opening (17).
8. sliding bearing formula shield machine roller cutter according to claim 7, it is characterised in that: the left end of the right end cap (6)
For tapered surface, cavity is formed between right end cap (6) and knife hub (3), cavity is connected with pressure relief opening (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821016738.7U CN208441845U (en) | 2018-06-29 | 2018-06-29 | A kind of sliding bearing formula shield machine roller cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821016738.7U CN208441845U (en) | 2018-06-29 | 2018-06-29 | A kind of sliding bearing formula shield machine roller cutter |
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| Publication Number | Publication Date |
|---|---|
| CN208441845U true CN208441845U (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821016738.7U Active CN208441845U (en) | 2018-06-29 | 2018-06-29 | A kind of sliding bearing formula shield machine roller cutter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278321A (en) * | 2021-12-31 | 2022-04-05 | 株洲硬质合金集团有限公司 | TBM hob pressure release device, TBM hob and assembling process |
-
2018
- 2018-06-29 CN CN201821016738.7U patent/CN208441845U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278321A (en) * | 2021-12-31 | 2022-04-05 | 株洲硬质合金集团有限公司 | TBM hob pressure release device, TBM hob and assembling process |
| CN114278321B (en) * | 2021-12-31 | 2023-08-22 | 株洲硬质合金集团有限公司 | TBM hob pressure release device, TBM hob and assembly process |
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