CN202580019U - Main shaft sealing structure of heading device - Google Patents
Main shaft sealing structure of heading device Download PDFInfo
- Publication number
- CN202580019U CN202580019U CN 201120485529 CN201120485529U CN202580019U CN 202580019 U CN202580019 U CN 202580019U CN 201120485529 CN201120485529 CN 201120485529 CN 201120485529 U CN201120485529 U CN 201120485529U CN 202580019 U CN202580019 U CN 202580019U
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- China
- Prior art keywords
- sealing
- main shaft
- ring
- heading equipment
- spacer shell
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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- Withdrawn - After Issue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 main shaft sealing structure of a heading device, comprising a cover-shaped connection taper reduction sleeve, covering the end part of a main shaft. The cover-shaped connection taper reduction sleeve is connected to the main shaft and a cutterhead through bolts. A cylindrical connection substrate sleeves a main shaft drive unit, and is connected to the main shaft drive unit through a bolt. The other end of the cylindrical connection substrate is provided with a sealing installation ring in a manner of butt joint, and two sides of the sealing installation ring are respectively provided with a front gland and a rear gland. The sealing installation ring and the front and rear glands form a sealing ring-shaped cavity at the outer side of the connection taper reduction sleeve. The ring-shaped cavity is provided with a first sealing member, and two sides of the sealing installation ring are respectively provided with a first sealing ring and a second sealing ring. When a sealing member needs to be replaced due to wearing, the main shaft and the main shaft drive unit will be integrally dismounted, and the rear gland will be dismounted, and thereby the sealing member can be replaced at any time. When the main shaft and the main shaft drive unit integrally separate from the heading device, the main shaft sealing structure will not be damaged, and thereby sealing normality of the heading device can be guaranteed, and pressure stabilization of a work surface can be maintained.
Description
Technical field
The utility model relates to the main shaft sealing construction of a kind of sealing configuration of heading equipment, particularly a kind of heading equipment.
Background technique
Development along with national economy and urban construction; Small-sized heading equipment is as the capital equipment of non-excavation pipeline construction, is widely used in the middle of the communications and transportation constructions such as infrastructure construction such as urban water supply and drainage, gas pipe line, electric power tunnel, telecommunication cable, generating plant circulation-water pipe laying and highway, railway, tunneling.
Push-bench is as a kind of small-sized heading equipment that generally uses, and push-bench drives the cutterhead rotation through main shaft the soil body is cut in the underground construction process; Push-bench tunnels in soil layer under the effect of main jack thrust, and the earth that excavates is discharged by the spoil disposal pipeline, and the pipeline of required laying is then immediately following at push-bench at the back; Main jack was return after push-bench tunneled a pipe joint road length; Lift a pipe joint road, push-bench continues jacking then, so back and forth accomplishes until pipe laying.
In the jacking construction process, because the particularity of non-excavating construction must keep working surface that certain pressure is arranged, if face pressure is unbalance, excessive variation takes place in outside stratum, may occur caving in or the risk of land subsidence, brings potential safety hazard to construction.Guarantee that at present the face pressure balance has three kinds of theories; Air pressure balance, mud-water balance and earth pressure balance are theoretical; Stable for guaranteeing face pressure; No matter between heading equipment and working surface, can inject muddy water or be full of certain air, be any method, guarantees that the sealing of working surface and push-bench internal body is a precondition; Inner for preventing that the liquid that injects in outside underground water of push-bench and the jacking construction process from getting into heading equipment simultaneously, guarantee that the sealing between internal body and the working surface also is necessary.
In work progress; It is the main action of heading equipment that main axis rotation drive cutterhead cuts the soil body; The main shaft seal position is the movable position of push-bench, and the problem of sealing part abrasion appears in regular meeting in the time of in work progress, and main shaft sealing construction is the key and the difficult point of push-bench sealing.
Provided a kind of main shaft sealing construction of existing push-bench like Fig. 1, Fig. 2; Main shaft 2` directly is connected with cutterhead 7`; Sealing installing ring 4` is connected with push-bench body 3` through bolt 5`, and Sealing 1` fixes through sealing installing ring 4` and the gland 8` that is installed on the sealing installing ring 4`, and forms sealing configuration between the main shaft 2`; For preventing that Sealing 1` from moving, sealing installing ring outside 6` and the welding of push-bench body are fixing.Like Fig. 2, because sealing installing ring 4` and gland 8` can only be after separating cutterhead 7`, remove after unclamping screw from the push-bench outside, and then the Sealing 1` that dismantles, and sealing installing ring outside 6` and body weld and fix and can't remove.Push-bench can not be retreated in the jacking construction process, and main shaft 2` can't break away from cutterhead 7`, causes Sealing 1` to be difficult to from overall structure, remove; Particularly the push-bench outside has been full of earth and liquid in work progress, and sealing installing ring 4` can't remove and cause Sealing 1` not change, because the situation of sealing configuration normal existence wearing and tearing in construction here; The risk that therefore just possibly cause Sealing to damage and can't change; Thereby can't proceed construction, can only take out whole heading equipment and change this Sealing through at the ground excavation vertical shaft; So both increase cost greatly, and can incur loss through delay the duration again.
In addition in the jacking construction process, when the main shaft drives parts damages are keeped in repair, by present main shaft sealing construction; Sealing is installed on the main shaft, removes main shaft and will destroy sealing configuration, destroys the isolation between push-bench internal body and the working surface; The earth of working surface and water etc. directly get in the heading equipment; Causing very burden to the later stage cleaning, mainly is can't keep face pressure stable, if the risk of face pressure unbalance meeting causing surface subsidence.
The model utility content
The utility model aims to provide a kind of Sealing that in work progress, is convenient for changing, and when removing main shaft, can guarantee the main shaft sealing construction of the heading equipment of heading equipment sealing.
The main shaft sealing construction of the said heading equipment of the utility model comprises that the lid shape of covering at spindle nose connects spacer shell, connects spacer shell and is connected with cutterhead with main shaft through bolt; Columnar connection matrix is enclosed within on the main shaft driving device; Be connected with main shaft driving device through bolt, connect matrix and the sealing installing ring is installed with being connected between the spacer shell, the end that seals installing ring be connected the matrix butt-end; Fix through screw; Gland and rear pressing cover before install through screw respectively its both sides, the sealing installing ring surrounds an annular housing with forward and backward gland in the outside that is connected spacer shell, the peace first dress Sealing in annular housing; Seal installing ring and be connected installation first seal ring between matrix, second seal ring is installed between sealing installing ring and preceding gland.
The main shaft sealing construction of the said heading equipment of the utility model; Jointly first Sealing is installed on the connection spacer shell by sealing installing ring, preceding gland, rear pressing cover; Form the axial seal structure, first, second seal ring is installed in sealing installing ring both sides respectively with preceding gland be connected and form radial seal structure between the matrix.In work progress, work as sealing part abrasion; When sealing configuration goes wrong, unclamp the connecting bolt that connects matrix and main shaft driving device, and be connected the bolt that spacer shell is connected with main shaft; Overall pulling down main shaft and main shaft driving device; Unclamp rear pressing cover then and remove rear pressing cover, can keep in repair or change first Sealing at any time, and need not heading equipment all be repaired or replaced sealing configuration from underground taking-up with the screw that the sealing installing ring is connected.
The main shaft sealing construction of the said heading equipment of the utility model is installed in to connect on the matrix with being connected and forms sealing configuration between the spacer shell; Connecting matrix is connected with main shaft driving device through bolt; Connect spacer shell and is connected the other end with cutterhead through bolt one end and is connected with main shaft, breaking down at the main shaft driving device component of heading equipment need the dismounting main shaft or main shaft driving device when keeping in repair, and unclamps the connecting bolt of connection matrix and main shaft driving device; With the connecting bolt that is connected spacer shell and main shaft; Just can be with main shaft and main shaft driving device and heading equipment overall separation, and can not destroy main shaft sealing construction, guarantee that the sealing of heading equipment is normal; The pressure stability that keeps working surface avoids causing because of face pressure is unbalance the risk of surface subsidence.
Description of drawings
Fig. 1 is the main shaft sealing construction sectional view of existing technology heading equipment.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the main shaft sealing construction sectional view of the utility model heading equipment.
Fig. 4 is the partial enlarged drawing of Fig. 3.
Embodiment
Like Fig. 3, Fig. 4 has provided a kind of main shaft sealing construction of heading equipment, comprises that the lid shape of covering in main shaft 20 ends connects spacer shell 1; Connect spacer shell 1 one ends and be connected with main shaft 20 through bolt 17, its other end is connected with cutterhead 16 through bolt 17,18; The cylindrical shape that is enclosed within on the main shaft driving device 14 connects matrix 11; Be respectively equipped with flange edge on one of which end and the main shaft driving device 14, will connect matrix 11 through bolt 19 and be connected, connect matrix 11 the other ends and seal installing ring 7 with being connected to be equipped with between the spacer shell 1 with main shaft driving device 14; The sealing installing ring 7 the end be connected matrix 11 butt-end; Be fixedly connected through screw 12, sealing installing ring 7 is enclosed within and connects on the spacer shell 1, gland 2 and rear pressing cover 9 before install through screw 13 and screw 10 respectively sealing installing ring 7 both sides; Sealing installing ring 7 and preceding gland 2, rear pressing cover 9 surround the annular housing that seals, installation first Sealing 4 in annular housing jointly being connected spacer shell 1 outside; Seal installing ring 7 and be connected installation first seal ring 8 between the matrix 11, second seal ring 5 is installed between sealing installing ring 7 and the preceding gland 2.
The main shaft sealing construction of the said heading equipment of the utility model; By sealing installing ring 7, preceding gland 2, rear pressing cover 9 first Sealing 4 is installed and is formed the axial seal structure; In sealing installing ring 7 both sides second seal ring 5 and first seal ring 8 are installed respectively, respectively with preceding gland 2 be connected between the matrix 11 and form radial seal structure.In work progress, work as 4 wearing and tearing of first Sealing; When sealing configuration goes wrong, unclamp the connecting bolt 19 that connects matrix 11 and main shaft driving device 14, with the connecting bolt 17 that is connected spacer shell 1 and main shaft 20; Overall pulling down main shaft 20 and main shaft driving device 14; Unclamp the screw 10 dismounting rear pressing covers 9 that rear pressing cover 9 is connected with sealing installing ring 7 then, can keep in repair or change first Sealing 4 at any time, and need not heading equipment all be repaired or replaced sealing configuration from underground taking-up.
The main shaft sealing construction of the said heading equipment of the utility model is installed to connect on the matrix 11 with being connected between the spacer shell 1 and is formed sealing configuration; Connecting matrix 11 is connected with main shaft driving device 14 through bolt 19; Connect spacer shell 1 and is connected the other end with cutterhead through bolt 17 1 ends and is connected, break down when needing dismounting main shaft 20 or main shaft driving device 14 to keep in repair, unclamp the connecting bolt 19 of connection matrix 11 and main shaft driving device 14 and be connected the connecting bolt 17 of spacer shell 1 and main shaft 20 at main shaft driving device 14 component of heading equipment with main shaft; Just can be with main shaft 20 and main shaft driving device 14 and heading equipment overall separation; And can not destroy main shaft sealing construction, sealing effect still exists, and guarantees the stability of heading equipment face pressure; Avoid the risk of working surface landslide or land subsidence, guarantee construction safety.
Narrow and small for its internal body of small-sized heading equipment, when damage of components, repair or replace parts difficulty usually at internal body, even can't change.The main shaft sealing construction that the utility model is disclosed; In the underground construction process, when main shaft driving device 14 breaks down or its component are damaged, but overall pulling down main shaft 20 and main shaft driving device 14; Be transported to ground maintenance or change component; After maintenance is accomplished again integral body be transported in the heading equipment body and install, having solved can't be from overall pulling down on the cutterhead 16 when main shaft driving device 14 damages, its maintenance or more change jobs and can only in the heading equipment body, carry out; Cause maintenance process difficult, even the problem that can't keep in repair.
Like Fig. 4,, be installed in first Sealing 4 in the annular housing in order to guarantee better sealability; Use packing seal element 41 and lip packing 42 to constitute, lip packing 42 is installed in the inboard, directly is enclosed within to connect on the spacer shell 1; Directly contact the formation sealing configuration with being connected spacer shell 1, packing seal element 41 is installed in the outside, is enclosed within on the lip packing 42; Extruding lip packing 42; Lip packing 42 relies on the pressure of sealing installing ring 7 and packing seal element 41, and its lip compresses and connects spacer shell 1, produces sealing effect better.
More than being installed in first Sealing 4 that connects in the spacer shell 1 exterior annular cavity is main sealed members of main shaft sealing construction, and it directly pushes the formation sealing with being connected spacer shell 1, is in the moving position of heading equipment; Also be the Sealing that damages easily, damage, stop construction with regard to needs and change Sealing 4 and incur loss through delay project progress for avoiding first Sealing 4; Another kind as the utility model improves, and the above first Sealing 4 is set to two, and two first Sealings 4 are arranged side by side; Be connected spacer shell 1 directly contact form sealing; Between two first Sealings 4 spacer 6 is set, when one of them first Sealing, 4 wearing and tearing, another first Sealing sealing is appointed right existence like this; Guarantee the sealing of heading equipment; Can continue construction and wait to construct when stopping, changing first Sealing of wearing and tearing again, project progress avoids delay.Simultaneously, two first Sealings 4 are set form two seals, make the sealing configuration better tightness.
Axial seal is the main sealing station of main shaft sealing construction; For making sealing configuration in the axial seal better effects if; At preceding gland 2 with connect and second Sealing 3 to be installed between the spacer shell 1 to form sealing configuration with being connected between the spacer shell 1, further guarantee the reliability of axial seal.
Like Fig. 4 gland 2 and connect two second Sealings 3 are installed between the spacer shell 1 in the past, it forms sealing configuration with being connected spacer shell 1 respectively, and when one of them second Sealing, 3 damage, another one second Sealing 3 sealabilities are unaffected.Preceding gland 2 is installed Sealings 3, and when changing first Sealing 4, second Sealing, 3 sealing effects also exist, and can guarantee sealing configuration in axial sealing, and heading equipment and external isolation state are unaffected.
Twice second Sealing 3 and two first Sealings 4 are the main sealed member of main shaft sealing construction, form sealing configuration between the spacer shell with being connected, the reliability that seals when guaranteeing main axis rotation.In sealing installing ring 7 both sides second seal ring 5 and first seal ring 8 are installed respectively; It is respectively with preceding gland 2 be connected between the matrix 11 and form sealing configuration; Guarantee the reliability of main shaft radial seal, radial seal is not the main sealing station of heading equipment, and installation is simple in order to make, installing/dismounting is more convenient; Second seal ring 5 and first seal ring 8 can use the O RunddichtringO, just can satisfy sealing configuration in radially sealing requirements.
Like Fig. 4; The main shaft sealing construction of above-described heading equipment, its preceding gland 2 is provided with step in opposite directions with rear pressing cover 9, and sealing installing ring 7 is seated on the step; Sealing installing ring 7 respectively and between preceding gland 2 and the rear pressing cover 9 two surface of contact form two seals, make sealing effect better.
The sealing configuration of the said heading equipment of the utility model is installed Sealing by connection matrix, connection spacer shell, sealing installing ring and is constituted; In the heading equipment work progress, when needing to change, remove main shaft and main shaft driving device from the heading equipment inner body as if Sealing appearance wearing and tearing; Remove rear pressing cover then; Can change Sealing easily, need not whole heading equipment is taken out the replacing Sealing, reduce unnecessary loss; Avoid whole heading equipment to be taken out the excavation vertical shaft, incur loss through delay project progress because of changing Sealing.When main shaft and main shaft driving device component break down when needing repairing; Can whole main shaft and main shaft driving device be separated with cutterhead; Keep in repair or be transported to ground maintenance in heading equipment inside; Make maintenance work more convenient, and sealing configuration was not destroyed this moment, guaranteed that the heading equipment sealing was normal.On the sealing installing ring, the O RunddichtringO is installed, is connected with preceding gland and heading equipment and forms sealing configuration between the matrix, guarantee main shaft diameter to sealing, the reliability of assurance main shaft sealing construction integral sealing.
Claims (7)
1. the main shaft sealing construction of a heading equipment; It is characterized in that, comprise that the lid shape of covering in main shaft (20) end connects spacer shell (1), connects spacer shell (1) and is connected with cutterhead (16) with main shaft (20) through bolt; Columnar connection matrix (11) is enclosed within on the main shaft driving device (14); Be connected with main shaft driving device (14) through bolt (19), connect matrix (11) and seal installing ring (7) with being connected to be equipped with between the spacer shell (1), the end that seals installing ring (7) be connected matrix (11) butt-end; Fix through screw; Gland (2) and rear pressing cover (9) before install through screw respectively its both sides, the sealing installing ring surrounds an annular housing with forward and backward gland in the outside that is connected spacer shell (1), and first Sealing (4) is installed in annular housing; Seal installing ring (7) and be connected installation first seal ring (8) between matrix (11), second seal ring (5) is installed between sealing installing ring (7) and preceding gland (2).
2. the main shaft sealing construction of heading equipment according to claim 1; It is characterized in that; Said first Sealing (4) that is installed in the annular housing is made up of packing seal element (41) and lip packing (42); Lip packing (42) is enclosed within and connects on the spacer shell (1), and packing seal element (41) is enclosed within lip packing (42) outside.
3. the main shaft sealing construction of heading equipment according to claim 2 is characterized in that, said first Sealing (4) that is installed in the annular housing is two, is provided with spacer (6) between two first Sealings (4).
4. the main shaft sealing construction of heading equipment according to claim 3 is characterized in that, second Sealing (3) is installed at preceding gland (2) with being connected between the spacer shell (1).
5. the main shaft sealing construction of heading equipment according to claim 4 is characterized in that, being installed in preceding gland (2) is two with second Sealing (3) that is connected between the spacer shell (1), and it forms sealing configuration with being connected between the spacer shell (1) respectively.
6. the main shaft sealing construction of heading equipment according to claim 1 is characterized in that, said second seal ring (5), and first seal ring (8) is the O RunddichtringO.
7. the main shaft sealing construction of heading equipment according to claim 1 is characterized in that, said preceding gland (2) and rear pressing cover (9) opposite sides are respectively equipped with step, and sealing installing ring (7) is seated on the step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120485529 CN202580019U (en) | 2011-11-30 | 2011-11-30 | Main shaft sealing structure of heading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120485529 CN202580019U (en) | 2011-11-30 | 2011-11-30 | Main shaft sealing structure of heading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202580019U true CN202580019U (en) | 2012-12-05 |
Family
ID=47249432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120485529 Withdrawn - After Issue CN202580019U (en) | 2011-11-30 | 2011-11-30 | Main shaft sealing structure of heading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202580019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494136A (en) * | 2011-11-30 | 2012-06-13 | 广州广船国际股份有限公司 | Seal structure of main shaft of excavating equipment |
| CN108979657A (en) * | 2018-08-10 | 2018-12-11 | 淮南中泰矿山装备制造有限公司 | Axis proof mechanism of water |
-
2011
- 2011-11-30 CN CN 201120485529 patent/CN202580019U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494136A (en) * | 2011-11-30 | 2012-06-13 | 广州广船国际股份有限公司 | Seal structure of main shaft of excavating equipment |
| CN102494136B (en) * | 2011-11-30 | 2015-02-04 | 广州广船国际股份有限公司 | Seal structure of main shaft of excavating equipment |
| CN108979657A (en) * | 2018-08-10 | 2018-12-11 | 淮南中泰矿山装备制造有限公司 | Axis proof mechanism of water |
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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: 20121205 Effective date of abandoning: 20150204 |
|
| RGAV | Abandon patent right to avoid regrant |