CN203702158U - Cutterhead auxiliary supporting wheel device - Google Patents
Cutterhead auxiliary supporting wheel device Download PDFInfo
- Publication number
- CN203702158U CN203702158U CN201420034216.5U CN201420034216U CN203702158U CN 203702158 U CN203702158 U CN 203702158U CN 201420034216 U CN201420034216 U CN 201420034216U CN 203702158 U CN203702158 U CN 203702158U
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- CN
- China
- Prior art keywords
- cutterhead
- support wheel
- force
- mount pad
- installation base
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a cutterhead auxiliary supporting wheel device which comprises an installation base and a supporting wheel which is fixed in the installation base. The installation base is fixed to the periphery of a rear face plate of a cutterhead through a supporting base fixing bolt and symmetrically arranged. The installation base is formed with wear-resistant steel in a welded mode, and a supporting wheel installation hole is formed in the middle of the installation base. Shovels which are formed with wear-resistant metal in a welded mode are arranged on the two sides of the installation base. In the process of tunneling a stratum with the non-uniform hardness, through analysis from the view of the device, on one hand, great deformation, tool eccentric wear and other problems happen to one side of the cutterhead due to the fact that force is unevenly exerted on the cutterhead; on the other hand, the problems that force is unevenly exerted on a main bearing and sealing of the main bearing fails occur certainly due to the fact that force is unevenly exerted on the cutterhead; thus, shield normal tunneling is influenced, and seriously, the main bearing needs to be replaced. By adding the cutterhead auxiliary supporting wheel device, the force bearing state of the cutterhead is improved, the force bearing state of the main bearing is changed as well, force is evenly exerted on the cutterhead and a main driving part, and therefore shield safe tunneling is ensured.
Description
Technical field
The utility model relates to shield cutter driving servicing unit, be specially and a kind ofly design for shield structure cutterhead unbalance stress problem in hard-soft heterogeneous ground, effectively solve cutterhead unbalance stress phenomenon by increasing cutterhead auxiliary support wheel, guaranteed the cutterhead supplemental support wheel apparatus that shield structure tunnels safely.
Background technology
Along with continuous progress and development, the especially manufacturing industry of society and the fast development of transportation, increasing for the demand property of shield structure, the technical requirements simultaneously proposing is also more and more higher.
Along with river, tunnel over strait are crossed in the increase of tunnel cross-section, particularly super-large diameter, upper soft lower hard formation is the most common.Be deposition sandy soil above, and be hard rock below; Due to reasons such as manufacture, transportation, installation accuracies, shield structure base bearing maximum gauge is limited, and JB/T2300-1999 regulation revolution is at present supported maximum gauge and is no more than 4.7 meters.For meeting the demand of economic construction, communications and transportation, tunnel cross-section is increasing, and limited by various factors on the one hand, and shield structure base bearing diameter can not infinitely increase.Therefore, complicated geology causes cutterhead unbalance stress and cutterhead cantilever is long causes main driving unbalance stress and occur that the problem such as seal failure, base bearing damage is current large-diameter shield one of the problem of core the most of constructing.
At present the main solution of upper soft lower hard formation running in major diameter tunnel excavation process is had to soft sandy soil artificial reinforced method with to methods such as lower floor's hard rock human-generated explosives.Very limited to soft sandy soil artificial reinforced method range of application, can only be applied to the relatively static or riverbank of the water surface, seashore edge, and manually not only cost is high to hard rock blasting, does not meet again the requirement of environmental protection.Therefore, from construction angle, tunnel is built safely in upper soft lower hard stratum does not still have good solution at present.
For the complicated geological situation of soft or hard inequality, by cutterhead stress model is analyzed, start with from shield cutter structure design, solve large-diameter shield construction cutterhead unbalance stress problem under hard-soft heterogeneous ground condition, be a good problem to study.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art, it is a kind of simple in structure that the utility model provides, easy for installation, improve cutterhead force-bearing situation by increasing cutterhead auxiliary support wheel, make cutterhead and main drive part reach stressed even, thereby guarantee the cutterhead supplemental support wheel apparatus that shield structure tunnels safely.
The purpose of this utility model is achieved in that
Cutterhead supplemental support wheel apparatus, comprises mount pad 7 and support wheel 9, and described support wheel 9 is fixed in mount pad 7, and mount pad 7 is fixed on cutterhead rear board 6 peripheries and is arranged symmetrically by supporting seat set bolt 10;
Described mount pad 7 is welded by abrasion-resistant stee, and centre is provided with support wheel installing hole; The both sides of mount pad 7 are provided with the scoop 8 that adopts antifriction metal (AFM) to be welded;
Described support wheel 9 is fixed together by briquetting and bolt and mount pad 7.
Described support wheel comprises wheel shaft 1, be positioned at wheel body 3 both sides for the protection of be positioned at wheel body 3 settings bearing 5 end cap 2 and be positioned at the support ring 4 outside wheel body 3;
On described cutterhead rear board 6, be milled with groove, be provided with force bearing ring 11 in groove, supporting seat 7 is arranged on the inner side of force bearing ring 11, and mount pad 7 is fixed together by supporting seat set bolt 10 and force bearing ring 11 and cutterhead rear board 6;
On described scoop 8, be provided with wear-resisting layer 12.
actively beneficial effect:in hard-soft heterogeneous ground tunneling process, from equipment angle analysis, cutterhead unbalance stress causes cutterhead one side to occur the problem such as large deformation, cutter eccentric wear on the one hand, on the other hand, because must causing base bearing, cutterhead unbalance stress is subject to force unbalance, and then cause the problems such as main shaft seals inefficacy, and affecting shield structure normally to tunnel, serious situation can be changed base bearing.The utility model has not only improved cutterhead force-bearing situation by increasing cutterhead auxiliary support wheel, has also changed the stress of base bearing simultaneously, makes cutterhead and main drive part reach stressed even, thereby guarantees that shield structure tunnels safely.
Accompanying drawing explanation
Fig. 1 is structural representation one of the present utility model;
Fig. 2 is structural representation two of the present utility model;
Fig. 3 is I portion structure for amplifying schematic diagram in Fig. 2;
Fig. 4 be in Fig. 2 A to structural representation;
In figure, be: wheel shaft 1, end cap 2, wheel body 3, support ring 4, bearing 5, cutterhead rear board 6, supporting seat 7, scoop 8, support wheel 9, supporting seat set bolt 10, force bearing ring 11, mill layer 12.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 2 and Figure 3, cutterhead supplemental support wheel apparatus, comprise mount pad 7 and support wheel 9, described support wheel 9 is fixed in mount pad 7, mount pad 7 is fixed on cutterhead rear board 6 peripheries and is arranged symmetrically by supporting seat set bolt 10, rotates with cutterhead, supports cutterhead periphery, guarantee that cutterhead is stressed evenly, avoided damaging because the soft or hard uneven cutterhead causing in stratum causes large deformation and base bearing;
Described mount pad 7 is welded by abrasion-resistant stee, and centre is provided with support wheel installing hole; The both sides of mount pad 7 are provided with the scoop 8 that adopts antifriction metal (AFM) to be welded;
Described support wheel 9 is fixed together by briquetting and bolt and mount pad 7.
As shown in Figure 1, described support wheel comprise wheel shaft 1, be positioned at wheel body 3 both sides for the protection of be positioned at wheel body 3 settings bearing 5 end cap 2 and be positioned at the support ring 4 outside wheel body 3;
On described cutterhead rear board 6, be milled with groove, be provided with force bearing ring 11 in groove, supporting seat 7 is arranged on the inner side of force bearing ring 11, and mount pad 7 is fixed together by supporting seat set bolt 10 and force bearing ring 11 and cutterhead rear board 6;
As shown in Figure 4, be provided with wear-resisting layer 12 on described scoop 8, scoop 8 is mainly used in removing the dregs of support wheel 9 roller tracks, guarantees that support wheel is pressed on the track of appointment.
Support wheel is distributed in around cutterhead rear board, is symmetrical uniform state arrangement; The concrete quantity that support wheel is installed is determined according to the diameter of stratum actual conditions and cutterhead; Stratum soft or hard uneven phenomenon is more serious, and cutter diameter is larger, and the quantity of support wheel is corresponding more; Normal situation lower support wheel is along with cutterhead is in fixing track rotation, but because the dregs in cutterhead cabin is many, easily form in orbit mud cake, be therefore respectively arranged with a scoop in the both sides of wheel seat, dregs on track can be removed, guarantee that support wheel is pressed on roller track completely.
Be mud up, in the stratum that below is hard rock, the cutterhead that diameter is 6.3 meters increases to be installed after 4 auxiliary support wheels, contrasts by finite element analysis, increases the front cutterhead maximum stress 178Mpa of auxiliary support wheel, maximum strain 9.64mm.Increase after auxiliary support wheel maximum stress 152Mpa, maximum strain 3.22mm.Know from two kinds of situation analysis comparing results, cutterhead increase after auxiliary support wheel stressed effect be improved significantly.
In hard-soft heterogeneous ground tunneling process, from equipment angle analysis, cutterhead unbalance stress causes cutterhead one side to occur the problem such as large deformation, cutter eccentric wear on the one hand, on the other hand, because must causing base bearing, cutterhead unbalance stress is subject to force unbalance, and then cause the problems such as main shaft seals inefficacy, and affecting shield structure normally to tunnel, serious situation can be changed base bearing.The utility model has not only improved cutterhead force-bearing situation by increasing cutterhead auxiliary support wheel, has also changed the stress of base bearing simultaneously, makes cutterhead and main drive part reach stressed even, thereby guarantees that shield structure tunnels safely.
Above case study on implementation is only for illustrating preferred embodiment of the present utility model, but the utility model is not limited to above-mentioned embodiment, in the ken possessing at described field those of ordinary skill, any modification of doing within spirit of the present utility model and principle, be equal to and substitute and improvement etc.
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Claims (6)
1. cutterhead supplemental support wheel apparatus, comprise mount pad (7) and support wheel (9), it is characterized in that: described support wheel (9) is fixed in mount pad (7), and mount pad (7) is fixed on cutterhead rear board (6) periphery and is arranged symmetrically by supporting seat set bolt (10).
2. cutterhead supplemental support wheel apparatus according to claim 1, is characterized in that: described mount pad (7) is welded by abrasion-resistant stee, and centre is provided with support wheel installing hole; The both sides of mount pad (7) are provided with the scoop (8) that adopts antifriction metal (AFM) to be welded.
3. cutterhead supplemental support wheel apparatus according to claim 1, is characterized in that: described support wheel (9) is fixed together by briquetting and bolt and mount pad (7).
4. according to the cutterhead supplemental support wheel apparatus described in claim 1 or 3, it is characterized in that: described support wheel (9) comprises wheel shaft (1), be positioned at wheel body (3) both sides for the protection of being positioned at the end cap (2) of the bearing (5) that wheel body (3) arranges and being positioned at the outer support ring (4) of wheel body (3).
5. cutterhead supplemental support wheel apparatus according to claim 1, it is characterized in that: on described cutterhead rear board (6), be milled with groove, in groove, be provided with force bearing ring (11), supporting seat (7) is arranged on the inner side of force bearing ring (11), and mount pad (7) is fixed together by supporting seat set bolt (10) and force bearing ring (11) and cutterhead rear board (6).
6. cutterhead supplemental support wheel apparatus according to claim 2, is characterized in that: on described scoop (8), be provided with wear-resisting layer (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420034216.5U CN203702158U (en) | 2014-01-21 | 2014-01-21 | Cutterhead auxiliary supporting wheel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420034216.5U CN203702158U (en) | 2014-01-21 | 2014-01-21 | Cutterhead auxiliary supporting wheel device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702158U true CN203702158U (en) | 2014-07-09 |
Family
ID=51052613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420034216.5U Withdrawn - After Issue CN203702158U (en) | 2014-01-21 | 2014-01-21 | Cutterhead auxiliary supporting wheel device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702158U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726854A (en) * | 2014-01-21 | 2014-04-16 | 中铁隧道集团有限公司 | Auxiliary support wheel device of cutter head |
| CN104132140A (en) * | 2014-07-17 | 2014-11-05 | 中铁工程装备集团有限公司 | Rolling supporting type sealing device for intermediate jacking station of rectangular shield tube jacking machine |
| CN104632237A (en) * | 2014-12-29 | 2015-05-20 | 上海市基础工程集团有限公司 | Detachable slewing bearing fixing device of shield heading machine cutter head driving mechanism |
-
2014
- 2014-01-21 CN CN201420034216.5U patent/CN203702158U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726854A (en) * | 2014-01-21 | 2014-04-16 | 中铁隧道集团有限公司 | Auxiliary support wheel device of cutter head |
| CN104132140A (en) * | 2014-07-17 | 2014-11-05 | 中铁工程装备集团有限公司 | Rolling supporting type sealing device for intermediate jacking station of rectangular shield tube jacking machine |
| CN104632237A (en) * | 2014-12-29 | 2015-05-20 | 上海市基础工程集团有限公司 | Detachable slewing bearing fixing device of shield heading machine cutter head driving mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20160406 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |