CN102628515A

CN102628515A - Mortar box stirring-shaft sealing device for shield equipment

Info

Publication number: CN102628515A
Application number: CN2012101261029A
Authority: CN
Inventors: 赵芳; 王幸福; 张丽华; 王晓; 曲明月; 潘景敖
Original assignee: Dalian Huarui Heavy Industry Group Co Ltd
Current assignee: Dalian Huarui Heavy Industry Group Co Ltd
Priority date: 2012-04-26
Filing date: 2012-04-26
Publication date: 2012-08-08

Abstract

The invention discloses a mortar box stirring-shaft sealing device for shield equipment.The mortar box stirring-shaft sealing device comprises a support, a compaction mechanism, a support mechanism and a seal assembly and is characterized in that an end plate of the mortar box body is fixed with the support sheathed on the outside of the stirring shaft; a corner seal is fixed at a support end portion close to a mortar box body side through a corner seal gland; compaction equipment II is arranged at an inner side of the support, and is sleeved and fixed on a stirring shaft; compaction equipment I is further sleeved and fixed on the stirring shaft; a support mechanism is fixed between the compaction equipment II and the compaction equipment I; two floating seals are arranged at both bearing pedestal ends in the support mechanism and compacted tight through the compaction equipment II and the compaction equipment I; the stirring shaft is sleeved and fixed with a circular nut, and the circular nut is fixed at a lateral side of the compaction equipment I. The mortar-box agitating-shaft sealing device for shield equipment provided in the invention can effectively prevent slurry leakage from end portions of the stirring shaft to the outside of the mortar box. Service life of the device is lengthened, and the device is easy to be replaced and can greatly reduce manufacture cost.

Description

Shield equipment is with mortar box stirring shaft seal arrangement

Technical field

The present invention relates to the mortar box of tunnel piercing with shield equipment, can also be used on the cement stirring device in the construction industry, specifically a kind of shield equipment is with mortar box stirring shaft seal arrangement.

Background technique

At present, the existing tunnel driving is with the mortar box of shield equipment filling system, and traditional Stuffing box packing gland formula sealing is adopted in the sealing of stirring shaft usually; The sealing effect of conventional seals is relatively poor, is prone to problems such as leakage or seepage take place, because medium is a mortar; So in case take place to leak or the seepage phenomenon; Cause stirring shaft to damage easily, cause more gross leak, the repair difficulty.

Summary of the invention

According to the technical problem of above-mentioned proposition, and provide a kind of shield equipment with mortar box stirring shaft seal arrangement.The present invention mainly utilizes the sealing means of angle sealing and floating seal combination, prevents that slurries from draining to the situation of mortar box outside from the stirring shaft end thereby play.Seal life after the improvement increases, and it is convenient to change, and has reduced manufacture cost significantly.The technological means that the present invention adopts is following:

A kind of shield equipment comprises support, hold-down mechanism, supporting mechanism and black box with mortar box stirring shaft seal arrangement, it is characterized in that: said hold-down mechanism comprises hold down gag I and hold down gag II, and said hold down gag I is provided with plug screw; Said black box comprises angle sealing, angle sealing gland, floating seal, O RunddichtringO I, O RunddichtringO II, O RunddichtringO III and O RunddichtringO IV; Said support is nested with at the end plate of the outside of stirring shaft and mortar box casing and fixes; Be provided with said O RunddichtringO III between said support and the said mortar box casing, the sealing of said angle is fixed on the end face of support near said mortar box casing one side through said angle sealing gland; Inboard and the socket that said hold down gag II is arranged on said support is fixed on the said stirring shaft; Be provided with said O RunddichtringO II between said hold down gag II and the said stirring shaft, said hold down gag II is pressed on the part of the said bracket end face of said angle sealing protrusion; Said hold down gag I also socket is fixed on the said stirring shaft; Be provided with said O RunddichtringO IV between said hold down gag I and the said stirring shaft; Be fixed with supporting mechanism between said hold down gag II and the said hold down gag I; Said supporting mechanism comprises bearing support, rolling bearing, inner split ring and outer spacer ring; Said bearing support comprise main body be arranged on the stationary platen on the main body, said bearing support is nested with the outside at said stirring shaft, stationary platen on the said bearing support and said support are fixed; Be provided with said O RunddichtringO I between stationary platen on the said bearing support and the said support; Two said rolling bearings are arranged in the main body of said bearing support, and two said rolling bearings socket respectively are fixed on the said stirring shaft, are separated by said inner split ring and said outer spacer ring between two said rolling bearings; Two said floating seals are separately positioned on the main body two ends of said bearing support, and said hold down gag I and said hold down gag II are pressed to said floating seal respectively in main body two ends and the said hold down gag I of said bearing support and the Seal cage that said hold down gag II forms; Go back socket on the said stirring shaft and be fixed with round nut, said round nut is fixed on the outside of said hold down gag I.

The present invention has the following advantages:

1, adopt the angle sealing to play the effect of the first road barrier, the life-span of greatly having improved floating seal;

2, floating seal has superpower wear resistance, and can compensate automatically behind the end wear;

3, simple in structure, easy for installation, good sealing effect, long service life, the maintenance maintenance cost is low.

The present invention can be used on the mortar box of all shield equipment equipment or on the cement stirring device of construction industry for the foregoing reasons.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.

Fig. 1 is a structural representation of the present invention.

Fig. 2 is a side view of the present invention.

Among the figure: 1. support 2. bearing supports 3. rolling bearings 4. inner split rings 5. outer spacer ring 6. floating seals 7. hold down gag I 8. plug screws 9. round nut 10.O RunddichtringO I seal 12. jiaos of sealing gland 13.O RunddichtringO II14. stirring shafts, 15. hold down gag II16.O RunddichtringO III17.O RunddichtringO IV18. mortar box casings for 11. jiaos

Embodiment

Like Fig. 1, shown in Figure 2, a kind of shield equipment is made up of support 1, hold-down mechanism, supporting mechanism and black box with mortar box stirring shaft seal arrangement, and hold-down mechanism comprises hold down gag I 7 and hold down gag II15, and hold down gag I 7 is provided with plug screw 8.Black box comprises angle sealing 11, angle sealing gland 12, floating seal 6, O RunddichtringO I 10, O RunddichtringO II13, O RunddichtringO III16 and O RunddichtringO IV17; It is nitrile butadiene rubber (NBR) that the angle seals 11 materials; The angle sealing belongs to end face seal; Produce amount of deformation through axial compression, form sealing, hinder mortar and ooze out; Floating seal is a kind of special shape mechanical seal, claims mechanical end face seal again; Form by two identical antifriction metal (AFM) seal ring and O-ring seals of profile,, have superpower sealability under the abominable operating conditions such as aqueous vapor at silt; Have wear-resisting; The characteristics that can compensate automatically behind the end wear have reliability height, advantages of simple structure and simple, and floating seal both can guarantee that the lubricant oil in the bearing support did not drain to the outside; Can intercept outside mortar again and get into bearing support inside, play the effect of protection bearing.The end plate that support 1 is nested with at the outside of stirring shaft 14 and mortar box casing 18 passes through bolt; Be provided with O RunddichtringO III16 between support 1 and the mortar box casing 18; Angle sealing 11 is fixed on the end face of support 1 near mortar box casing 18 1 sides through angle sealing gland 12, and angle sealing gland 12, angle sealing 11 and support 1 pass through bolt; Inboard and the socket that hold down gag II15 is arranged on support 1 is fixed on the stirring shaft 14; Hold down gag II15 is connected on the shaft shoulder of stirring shaft 14, and the shaft shoulder through stirring shaft 14 carries out axially locating, is provided with O RunddichtringO II13 between the shaft shoulder of hold down gag II15 and stirring shaft 14; Hold down gag II15 is pressed on the angle and seals on the part of 11 protruding brackets, 1 end face; Hold down gag II15 produces axial deflection with angle sealing 11 jack-up vertically, forms sealing configuration; Hold down gag I 7 also socket is fixed on the stirring shaft 14; Be provided with O RunddichtringO IV17 between hold down gag I 7 and the stirring shaft 14; Be fixed with supporting mechanism between hold down gag II15 and the hold down gag I 7, supporting mechanism comprises bearing support 2, rolling bearing 3, inner split ring 4 and outer spacer ring 5, and bearing support 2 comprises main body and is arranged on the stationary platen on the main body; Bearing support 2 is nested with the outside at stirring shaft 14; Stationary platen on the bearing support 2 and support 1 are provided with 10, two rolling bearings 3 of O RunddichtringO I and are arranged in the main body of bearing support 2 through bolt between stationary platen on the bearing support 2 and the support 1; Two rolling bearings 3 socket respectively are fixed on the stirring shaft 14; Separated by inner split ring 4 and outer spacer ring 5 between two rolling bearings 3, two floating seals 6 are separately positioned on the main body two ends of bearing support 2, in the main body two ends that hold down gag I 7 and hold down gag II15 are pressed to floating seal 6 respectively bearing support 2 and the Seal cage of hold down gag I 7 and hold down gag II15 formation; Go back socket on the stirring shaft 14 and be fixed with round nut 9, round nut 9 is fixed on the outside of hold down gag I 7, and hold down gag I 7 is through round nut 9 axial lockings.Shield equipment of the present invention is installed with mortar box stirring shaft seal arrangement respectively at stirring shaft 14 two ends, the installation back is good turns on plug screw 8, in Seal cage, injects moderate lubrication oil, after injection finishes plug screw 8 is tightened; Stirring shaft 14 two ends adopt flange to connect, and convenient disassembly is convenient to seal and the maintenance maintenance of bearing.

The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technician who is familiar with the present technique field is equal to replacement or change according to technological scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.

Claims

1. a shield equipment is with mortar box stirring shaft seal arrangement; Comprise support (1), hold-down mechanism, supporting mechanism and black box; It is characterized in that: said hold-down mechanism comprises hold down gag I (7) and hold down gag II (15), and said hold down gag I (7) is provided with plug screw (8); Said black box comprises angle sealing (11), angle sealing gland (12), floating seal (6), O RunddichtringO I (10), O RunddichtringO II (13), O RunddichtringO III (16) and O RunddichtringO IV (17); Said support (1) is nested with at the end plate of the outside of stirring shaft (14) and mortar box casing (18) and fixes; Be provided with said O RunddichtringO III (16) between said support (1) and the said mortar box casing (18), said angle sealing (11) is fixed on the end face of support (1) near said mortar box casing (18) one sides through said angle sealing gland (12); Inboard and the socket that said hold down gag II (15) is arranged on said support (1) is fixed on the said stirring shaft (14); Be provided with said O RunddichtringO II (13) between said hold down gag II (15) and the said stirring shaft (14), said hold down gag II (15) is pressed on said angle sealing (11) and protrudes on the part of said support (1) end face; Said hold down gag I (7) also socket is fixed on the said stirring shaft (14); Be provided with said O RunddichtringO IV (17) between said hold down gag I (7) and the said stirring shaft (14); Be fixed with supporting mechanism between said hold down gag II (15) and the said hold down gag I (7); Said supporting mechanism comprises bearing support (2), rolling bearing (3), inner split ring (4) and outer spacer ring (5); Said bearing support (2) comprises main body and is arranged on the stationary platen on the main body; Said bearing support (2) is nested with the outside in said stirring shaft (14); Stationary platen on the said bearing support (2) and said support (1) are fixing, are provided with said O RunddichtringO I (10) between stationary platen on the said bearing support (2) and the said support (1), and two said rolling bearings (3) are arranged in the main body of said bearing support (2); Two said rolling bearings (3) socket respectively are fixed on the said stirring shaft (14); Separated by said inner split ring (4) and said outer spacer ring (5) between two said rolling bearings (3), two said floating seals (6) are separately positioned on the main body two ends of said bearing support (2), and said hold down gag I (7) and said hold down gag II (15) are pressed to said floating seal (6) respectively in main body two ends and the said hold down gag I (7) of said bearing support (2) and the Seal cage that said hold down gag II (15) forms; Said stirring shaft (14) is upward gone back socket and is fixed with round nut (9), and said round nut (9) is fixed on the outside of said hold down gag I (7).