CN201794591U

CN201794591U - Single-disc central hob of shield machine

Info

Publication number: CN201794591U
Application number: CN2010205214023U
Authority: CN
Inventors: 晁焕清; 李伟; 魏俊伟; 马会超
Original assignee: LUOYANG JIUJIU TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: LUOYANG JIUJIU TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2010-09-08
Filing date: 2010-09-08
Publication date: 2011-04-13
Anticipated expiration: 2020-09-08

Abstract

The utility model discloses a single-disc central hob of a shield machine, which comprises a cutter shaft (1), a cutter cover (6), a connecting bolt (8), a bearing inner sleeve (2), a bearing outer sleeve (3), a cutter body (4), a cutter ring (5) and a floating sealing ring (7). The bearing inner sleeve and the bearing outer sleeve matched mutually, and the cutter body and the cutter ring supported by the matched bearing inner sleeve and bearing outer sleeve are arranged in turn in the radial enlarging direction of the outer ring of the cutter shaft; the floating sealing ring is arranged between the bearing outer sleeve and the cutter cover; and the cutter shaft and the cutter cover are fixed together by the connecting bolt. The central hob is characterized in that: one cutter shaft is only fixedly connected with one cutter cover; a sealing tape is arranged on one side of the bearing outer sleeve, and the sealing tape is paired with the floating sealing ring arranged on the cutter cover to form a sealing pair; the hob has enough strength and good abrasion resistance, and the single-disc hob can be arranged in parallel on a cutter head; and when one blade is damaged, only half of the blade is replaced, so the hob is convenient to replace and install and adaptive to wide geological conditions.

Description

Shield machine single-deck center hobboing cutter

Technical field

The utility model relates to the shield machine cutter technical field, is specifically related to be applied to the dish type center hobboing cutter on the cutter head of shield machine.

Background technology

High speed development along with China's modernization economic construction, the construction of tunnel building cause that with the subway is representative just is surging forward, as underground warehouse, water conservancy hole letter, large-scale tunnel engineering construction such as highway, railway tunnel, mine laneway are more and more, and just increasing towards diameter, mileage direction more and more longer, that quality requirement is more and more higher develops, and these actual national conditions that are China has a large population and a few land determine.The shield driving construction method is widely used in the tunnel construction, and not only efficient height, safety are good for it, and economic environmental protection, is the optimal selection of modern tunnel engineering construction, and the shield machine go-go professional equipment that is it.Disk cutter and scraper are the dedicated tools that is used for rock cutting and soil layer on the shield machine, they be installed on the cutterhead and when constructing tunnel the hobboing cutter cutter ring by in the injection rock soil layer, cutterhead drives disk cutter and realizes revolution and rotation under whirligig drives simultaneously, make hobboing cutter roll extrusion continuously on the rock soil layer, finish continuous cutting and fragmentation to the rock soil layer, scraper carries out continuous ditch dug with a plow and peels off the dregs rubble, therefore disk cutter and scraper are in shield machine and position, the contacted forefront of rock soil layer face, the length in its life-span and the compliance of geological conditions become one of key factor that influences shield machine construction efficient.

At present, adopt double plate center hobboing cutter both at home and abroad more than the hobboing cutter of shield machine dish type center, in conjunction with Fig. 3, because cutter spacing restriction, be generally 180 millimeters, use a cutter shaft always two cuttves lids and middle two-edged knife lid are penetrated from an end, running in bearings, cutter hub, cutter cover and cutter ring then, and promptly a plurality of cutter hubs, cutter ring are assemblied on the same cutter shaft; Hobboing cutter is very heavy like this, and difficulty is changed in artificial lift to move during construction; And it is narrow that this double plate center hobboing cutter also exists accommodation, runs into shortcomings such as bad ground causes easily cutter to lose efficacy in advance making that whole cutter is scrapped.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of single-deck center hobboing cutter, this hobboing cutter has enough intensity, abrasion resistance is good and the single-deck hobboing cutter can be installed in parallel on cutterhead, change when blade damages that half is just passable, change easy for installationly, adapt to wide in range geological conditions.

For achieving the above object, the utility model adopts technical scheme as described below:

Single-deck of the present utility model center hobboing cutter, comprise cutter shaft, cutter lid, connecting bolt, bearing inner sleeve, bearing outside, cutter hub, cutter ring and fluctuate hermetical ring, cutter shaft outer ring radially augment direction is provided with bearing inner sleeve, the bearing outside that cooperatively interacts successively, and the bearing inner sleeve that cooperates, the bearing outside cutter hub and the cutter ring that support; Be provided with fluctuate hermetical ring between described bearing outside and the cutter lid; Connecting bolt is secured together cutter shaft and cutter lid; Wherein, a cutter shaft only connects firmly with a cutter lid; Described bearing outside is provided with band on one side, this band be arranged on the fluctuate hermetical ring that cutter covers and be composed of sealing pair.

During use, be fixed on the knife block of cutterhead with the hobboing cutter two ends, single-deck center of connecting bolt, replacing original structure double plate center hobboing cutter, and meet the requirement of 180 millimeters of cutter spacings parallel connection by band angle voussoir and horizontal briquetting.

The bearing outside of band sealing and bearing inner sleeve is used for supporting cutter hub and cutter ring rotates it on cutter shaft, another purposes of the bearing outside of band sealing are and are arranged on fluctuate hermetical ring that cutter covers and form annular seal space and store lubrication oil bearing and fluctuate hermetical ring in the work are lubricated; Cutter hub is used for installing cutter ring.

Because the utility model is that a cutter hub only is installed on the cutter shaft with the structural change that a plurality of cutter hubs are installed on the cutter shaft, cover the mode that connects firmly with cutter shaft by a cutter; Be that single-deck of the present utility model center hobboing cutter is compared with the double plate center hobboing cutter of original structure, its advantage is: low cost of manufacture, and reliable in structure, bearing capacity is big, and monomer weight is light; And easy accessibility when changing in the tunnel, that single-deck center hobboing cutter that only need change loss gets final product, and can improve more than the working life twice.

Description of drawings

Fig. 1 is the structural representation of the utility model single-deck center hobboing cutter;

Fig. 2 is two structural representations that single-deck center hobboing cutter is installed in parallel;

Fig. 3 is the structural representation of existing double plate center hobboing cutter;

Fig. 4 is the split structural representation of the utility model cutter shaft and cutter lid;

Fig. 5 is the structural representation of the bearing outside of the utility model band sealing;

Fig. 6 is the structural representation of the utility model cutter hub;

Among the figure:

The 1-cutter shaft; The 2-bearing inner sleeve; The 3-bearing outside; The 4-cutter hub; The 5-cutter ring; 6-cutter lid; The 7-fluctuate hermetical ring; The 8-connecting bolt; The 9-band.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is explained further, be it should be noted that the utility model is not limited to following embodiment.

In conjunction with Fig. 1, single-deck of the present utility model center hobboing cutter, cutter shaft 1 width is 180mm, cutter shaft 1 outer ring radially augment direction is provided with bearing inner sleeve 2, the bearing outside 3 that two covers cooperatively interact successively, and the bearing inner sleeve 2 that cooperates, bearing outside 3 cutter hub 4 and the cutter ring 5 that support, cutter hub 4 is used for installing cutter ring 5 and carries out the cutting fragmentation of rock and soil layer by cutter ring; In conjunction with Fig. 5, described bearing outside 3 narrow limits are provided with band 9, and this band 9 is composed of sealing pair with a fluctuate hermetical ring 7 that is arranged on the cutter lid 6; Connecting bolt 8 is rigidly fixed to cutter shaft 1 and cutter lid 6 together.

In conjunction with Fig. 2, single-deck center hobboing cutter in parallel meets the requirement of 180 millimeters of cutter spacings.The hobboing cutter two ends are installed to connecting bolt by band angle voussoir and horizontal briquetting on the knife block of cutterhead of shield machine,, make dish type center hobboing cutter continuously cut face, realize continuous excavation operation by the continuous rotation of cutter head of shield machine.

In this enforcement, bearing inner sleeve selection standard spare.

In conjunction with Fig. 4, when cutter shaft, cutter lid is made, carbon chromium, molybdenum alloy steel in the material selection, earlier through forging make hair bad, then through mechanical roughing, again through Overheating Treatment, carry out machine finishing according to design drawing at last, to be assembled through being up to the standards.

In conjunction with Fig. 5, when band sealed bearing overcoat is made, material selection medium-Si, Mo vanadium alloy steel high-quality bearing material, earlier make blank through forging, then through mechanical roughing, heat treatment, through semifinishing and heat treatment, carry out machine finishing according to design drawing at last again, make band.

In conjunction with Fig. 6, when cutter hub is made, carbon chromium, molybdenum alloy steel in the material selection, earlier through forging make blank, then through mechanical roughing, again through Overheating Treatment, carry out machine finishing according to design drawing at last, to be assembled through being up to the standards.

During assembling, above each primary structure part processing is finished through after the assay was approved, and other part and outsourcing auxiliary equipment carry out assembling and setting on deck through after the assay was approved by the drawing technical requirements, through after the assay was approved, the hobboing cutter manufacturing of single-deck of the present utility model center is finished.

Claims

1. shield machine single-deck center hobboing cutter, comprise cutter shaft (1), cutter lid (6), connecting bolt (8), bearing inner sleeve (2), bearing outside (3), cutter hub (4), cutter ring (5) and fluctuate hermetical ring (7), cutter shaft (1) outer ring radially augment direction is provided with bearing inner sleeve (2), the bearing outside (3) that cooperatively interacts successively, and the bearing inner sleeve (2) that cooperates, bearing outside (3) cutter hub (4) and the cutter ring (5) that support; Be provided with fluctuate hermetical ring (7) between described bearing outside (3) and the cutter lid (6); Connecting bolt (8) is secured together cutter shaft (1) He Daogai (6); It is characterized in that: a cutter shaft (1) only connects firmly with a cutter lid (6); Described bearing outside (3) is provided with band on one side, and this band is composed of sealing pair with a fluctuate hermetical ring that is arranged on the cutter lid (6).