CN202039867U - Auxiliary device for pavement of tunnel waterproof boards - Google Patents
Auxiliary device for pavement of tunnel waterproof boards Download PDFInfo
- Publication number
- CN202039867U CN202039867U CN2011201008924U CN201120100892U CN202039867U CN 202039867 U CN202039867 U CN 202039867U CN 2011201008924 U CN2011201008924 U CN 2011201008924U CN 201120100892 U CN201120100892 U CN 201120100892U CN 202039867 U CN202039867 U CN 202039867U
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- laying
- tunnel
- water proofing
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Abstract
The utility model discloses an auxiliary device for the pavement of tunnel waterproof boards, comprising an arch support, a guiderail which is arranged along the outside contour of the arch support, a plurality of guide rollers which are transversely arranged at the inner side of the guiderail in parallel and supported by the arch support and a traveling trolley which comprises a traveling wheel, a clamping part and a guide part. The traveling trolley also comprises a trolley bracket which comprises a first bracket group and a second bracket group; the guide part which is a turning roller is arranged at the upper part of the first bracket group; the other end of a strut of the turning roller is connected with the first bracket group; the clamping part is arranged on a connection rod; the clamping part comprises two clamping rollers which are rotatably connected on the connection rod; and a certain gap is retained between the two clamping rollers. The auxiliary device for the pavement of tunnel waterproof boards has the advantages of being convenient for pavement, reducing the construction difficulty and labor intensity, improving the work efficiency and ensuring the pavement quality.
Description
Technical field
The utility model belongs to the technical field of constructing tunnel, relates in particular to a kind of servicing unit that the tunnel water proofing plate is laid that is used for.
Background technology
At present, in underground engineering construction operations such as railway, highway, subway tunnel, adopt lining construction that tunnel structure is carried out supporting.The method that the lining cutting in tunnel is adopted usually is twice lining cutting, spray one layer concrete carries out preliminary bracing on the wall in tunnel, secondary lining and preliminary bracing are comparatively speaking, finger has carried out under the condition of preliminary bracing in the tunnel, the inner lining of building with materials such as concrete, reinforce supporting to reach, optimize the route waterproof and water drainage system, beautify outward appearance, the effect of facilities such as communication, illumination, monitoring conveniently be set, to adapt to Modern High-Speed roads and tunnels requirements on Construction.
And needing to lay tunnel water proofing plate (containing cushion coat) between supporting in the early stage and the secondary lining, the job practices of splash guard is to utilize manually splash guard to be fixed in tunnel concrete inwall side usually, to reach the purpose of the water seepage in the tunnel that prevents in the rock stratum.Existing splash guard mainly is divided into plastics waterproofing plate and rubber waterproof plate by employed material.The plastics waterproofing plate has advantage in light weight, that difficulty of construction is little, but because the plastics waterproofing plate is subjected to the restriction of the performance of material own, its fabric width is less, fabric width requirement in the time of can not adapting to construction, and the plastics waterproofing plate is perishable, application life is short, waterproof effect is not ideal enough.Therefore, the plastics waterproofing plate is substituted by the rubber waterproof plate gradually, and the maximum fabric width of existing rubber waterproof plate can reach 7 meters, can satisfy in the construction width and aspect requirement in application life, has the advantage of long service life, good water-proof effect.But existing rubber waterproof plate also has weak point in construction operation, because the size of rubber waterproof plate is increasing and weight is also more and more heavier, therefore when artificial the laying, exist complex process, difficulty of construction big, waste time and energy, many technical problems such as the work efficiency index is low, quality fluctuation is big.
Because the shortcoming that above-mentioned prior art exists, the design people is based on being engaged in relevant design and field experience and professional knowledge, actively improved and innovated, in the hope of realize a kind ofly being convenient to lay, difficulty of construction is low, time saving and energy saving and can improve the servicing unit and the method that the tunnel water proofing plate is laid that be used for of construction quality.
The utility model content
The purpose of this utility model provides a kind of difficulty of construction, time saving and energy saving and can improve the servicing unit that the tunnel water proofing plate is laid that is used for of construction quality of being convenient to lay, reduce.
For achieving the above object, the utility model proposes a kind of servicing unit that the tunnel water proofing plate is laid that is used for, comprising: arch support; Guide rail is provided with along described arch support lateral profile; A plurality of guide rollers, the laterally parallel described guide rail inboard of being located at; Walking dolly, vertically be arranged on the described guide rail, this walking dolly comprises the road wheel that matches with described guide rail at least, drive the driving mechanism that described walking dolly vertically moves along described guide rail, control the locking mechanism of described walking dolly location, the hold assembly of the described splash guard of clamping, and guide the guiding part that described splash guard extends to described tunnel inwall one side.
The aforesaid servicing unit that is used for the laying of tunnel water proofing plate, wherein, described walking dolly also comprises little kickstand, and described little kickstand comprises first groups of holders and second groups of holders vertically are set, and is provided with connecting rod between described first groups of holders and described second groups of holders; Bottom in described first groups of holders and described second groups of holders is respectively equipped with described road wheel, be provided with described guiding part on the top of described first groups of holders, described guiding part is slewing rollers, described slewing rollers can be positioned an end of slewing rollers pole rotationally, and the other end of described slewing rollers pole is connected with described first groups of holders; Be provided with described hold assembly on described connecting rod, described hold assembly comprises two nip rolls that can be rotationally connected with on the described connecting rod, has certain interval between described two nip rolls.
The aforesaid servicing unit that is used for the laying of tunnel water proofing plate wherein, is lifted with Working gantry respectively on the top of described first groups of holders and described second groups of holders.
The aforesaid servicing unit that is used for the laying of tunnel water proofing plate, wherein, described first groups of holders is connected by the suspension pole of extending laterally with described Working gantry.
The aforesaid servicing unit that is used for the laying of tunnel water proofing plate, wherein, described slewing rollers pole can be connected rotationally with described first groups of holders, and an end of a spring spacer bar is connected in the middle part of described slewing rollers pole, and its other end is connected with described first groups of holders.
The aforesaid servicing unit that is used for the laying of tunnel water proofing plate, wherein, the described servicing unit that is used for the laying of tunnel water proofing plate also comprises at least one magazine, described magazine comprises the material stock roller, be provided with the material stock support on described material stock roller, described material stock roller can be connected with the bottom of described arch support rotationally.
The aforesaid servicing unit that is used for the laying of tunnel water proofing plate, wherein, described arch support is cross-linked to form by many groups column and horizontally disposed many group crossbeams of vertical setting.
The aforesaid servicing unit that is used for the laying of tunnel water proofing plate wherein, is provided with a plurality of moving runners in the bottom surface of described arch support.
Compared with prior art, the utlity model has following characteristics and advantage:
1, because the structure design that the utility model adopts walking dolly to match with guide rail, splash guard transmits on the guide roller of guide rail inboard and extends to tunnel inwall one side by walking dolly, and splash guard is laid at the anchor ring of the tunnel, drive lower edge of walking dolly inwall, to realize the laying operation of splash guard.Therefore, the utility model compared with prior art has and is convenient to lay, reduce difficulty of construction, time saving and energy saving, advantage that construction quality is high.
2, the utility model utilizes the self gravitation of the Working gantry that lifts on the walking dolly, at any time adjust relative angle with walking dolly, guarantee that Working gantry is in vertical state all the time, thereby the operation of guaranteeing the constructor on the Working gantry is unaffected, has further guaranteed construction quality.
3, the utility model also is provided with self-regulation part between the slewing rollers pole and first groups of holders, promptly this self-regulation part is a spring spacer bar, one end of spring spacer bar is connected in the middle part of described slewing rollers pole, and its other end is connected with described first groups of holders; And described slewing rollers pole and described first groups of holders are hinged; Like this, when walking dolly moves, utilize the resilient force of spring spacer bar to slewing rollers, the height and position of slewing rollers can be adjusted automatically with the concavo-convex situation of tunnel inwall side surface, guarantee that the splash guard of winding on the slewing rollers can be close to tunnel inwall one side, thereby improved the laying construction quality of splash guard, reduced difficulty of construction.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is used for the structural representation of the servicing unit of tunnel water proofing plate laying for the utility model;
Fig. 2 is the structural representation of walking dolly of the present utility model;
The plan structure schematic diagram that Fig. 3 combines with guide roller for guide rail of the present utility model;
The side-looking structural representation that Fig. 4 combines with guide rail, guide roller for walking dolly of the present utility model.
Description of reference numerals:
The 100-splash guard; The 1-arch support; The 2-guide rail; The 3-walking dolly; The little kickstand of 31-; 311-first groups of holders; 312-second groups of holders; The 313-connecting rod; The 32-road wheel; The 33-nip rolls; The 34-slewing rollers; 35-slewing rollers pole; 36-hangs pole; The 37-spring spacer bar; The 4-guide roller; The 5-Working gantry; 6-material stock roller; 7-material stock support; The 10-tunnel; The 11-column; The 12-crossbeam.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, be respectively the utility model and be used for the side-looking structural representation that the structural representation of the structural representation of the servicing unit that the tunnel water proofing plate lays, walking dolly of the present utility model and plan structure schematic diagram that guide rail of the present utility model combines with guide roller and walking dolly of the present utility model combine with guide rail, guide roller.
As shown in the figure, the servicing unit that is used for the laying of tunnel water proofing plate of the present utility model comprises: arch support 1 that is used to support and guide rail 2, described guide rail 2 is laid along described arch support 1 lateral profile and is formed the dome-shaped that matches with tunnel 10 shape of cross sections, guide rail 2 is supported by arch support 1, as shown in Figure 3, walking dolly 3 vertically is arranged on the described guide rail 2, guide rail 2 can match with the road wheel 32 of walking dolly 3 bottoms, plays the effect of mobile guide.In guide rail 2 inboards, along perpendicular to the axial direction of guide rail 2 abreast (promptly laterally parallel) be provided with a plurality of guide rollers 4, guide roller 4 is supported by arch support 1, and guide roller 4 can rotate along separately central axis, and a plurality of parallel and guide rollers 4 that can rotate play the effect of the splash guard 100 after the expansion of leading.
In the utility model, described walking dolly 3 comprises dolly support 31, road wheel 32, nip rolls 33 and slewing rollers 34, and driving mechanism and locking mechanism, described driving mechanism can drive described walking dolly 3 and vertically move along described guide rail 2, and described locking mechanism can make described walking dolly 3 be locked in optional position on the guide rail 2.Described driving mechanism and locking mechanism are prior art, are not described in detail at this.Wherein, as shown in Figure 2, described dolly support 31 comprises first groups of holders 311 and second groups of holders 312 vertically is set, first groups of holders 311 is located at the side near splash guard 100, between described first groups of holders 311 and described second groups of holders 312, be fixed with connecting rod 313, make the groups of holders 311 of winning, described second groups of holders 312 and connecting rod 313 form integrative-structure.Be respectively equipped with described road wheel 32 in the bottom of described first groups of holders 311 and described second groups of holders 312, described road wheel 32 matches with guide rail 2, makes walking dolly 3 to move back and forth along arch guide rail 2.Road wheel 32 can be selected wheel track structure or known mode such as rail plate or rolling guide with guide rail 2 concrete connected modes.Road wheel 32 is across the two ends of guide roller 4, and independence is not disturbed mutually.Can be provided with described two nip rolls 33 rotationally at the middle part of described connecting rod 313, the axis of described two nip rolls 33 and guide roller 4 axially in the same way and parallel, have certain interval between described two nip rolls 33, make splash guard 100 extend to tunnel 10 inwall directions by this gap.In the utility model, the gap length between two nip rolls 33 is adjustable, thereby can adjust according to the actual job situation, and the concrete structure of adjustable nip rolls is a known technology, no longer describes in detail at this.Two nip rolls 33 are to drag the splash guard deployed device, and the tightness can adjust splash guard (containing cushion coat) and lay the time, also play steering-effecting.Promptly when walking dolly when guide rail moves, two nip rolls can by manually or mechanical system rotate, launch thereby drag splash guard (containing cushion coat).When walking dolly is fixed, when only rotating two nip rolls, just can adjust the splash guard tightness of (containing cushion coat). And splash guard changes 90 ° to the tunnel wall direction by being close to guide roller by two nip rolls the time.But the utility model also is not limited thereto, and the utility model can also adopt other known hold assemblies, as long as can guarantee splash guard 100 is played the effect of clamping and transmission.Be provided with slewing rollers 34 on the top of described first groups of holders 311, described slewing rollers 34 can be positioned an end of slewing rollers pole 35 rotationally by bearing pin, the other end of described slewing rollers pole 35 is connected with described first groups of holders 311, make splash guard 100 can be set around on the slewing rollers 34 like this, and then be directed to tunnel 10 inwall sides.But the utility model also is not limited thereto, and the utility model can also adopt other known guiding parts, and guide pulley etc. for example is as long as can make splash guard 100 be directed to tunnel inwall one side and can be engaged on the tunnel inwall.As shown in Figure 1, in the utility model, the height of described first groups of holders 311 equals the vertical distance of described guide rail 2 to the tunnel inner wall surface haply, be located at the top of first groups of holders 311 by slewing rollers 34, make slewing rollers 34 can be connected to the inwall side in tunnel like this, thereby slewing rollers 34 can be guided splash guard 100 to tunnel inwall one side, with the laying operation of splash guard.
From the above, the structure design that the utility model adopts walking dolly to match with guide rail, splash guard transmits on the guide roller of guide rail inboard and extends to tunnel inwall one side by walking dolly, and splash guard is laid at the anchor ring of the tunnel, drive lower edge of walking dolly inwall, to realize the laying operation of splash guard.Therefore, the utility model compared with prior art has to be convenient to lay, to reduce difficulty of construction and labour intensity, to have improved operating efficiency, has guaranteed the advantage of laying quality.
Further, as shown in Figure 2, be lifted with Working gantry 5 respectively, lay operation for the constructor on the top of described first groups of holders 311 and described second groups of holders 312.Be the top that Working gantry 5 can be arranged at described first groups of holders 311 and described second groups of holders 312 by pivot or hinge or other known suspension connected modes.Like this, when the guide rail 2 of walking dolly 3 on arch support 1 moves, the angle of walking dolly gradually changes, and Working gantry 5 can rely on the gravity of self to adjust relative angle with walking dolly at any time, guarantee that Working gantry 5 is in vertical state all the time, thereby the operation of guaranteeing the constructor on the Working gantry 5 is unaffected, has further guaranteed construction quality.In the present embodiment, described first groups of holders 311 is connected by the suspension pole 36 of extending laterally with described Working gantry 5, and Working gantry 5 is hung on and hangs on the pole 36, thereby guarantees that further Working gantry 5 is in vertical state.
Further, as shown in Figure 2, carry out operation, guarantee the stability of construction quality for walking dolly 3 is adapted to more on the out-of-flatness surface of tunnel 10 inwall sides.Between the slewing rollers pole 35 and first groups of holders 311, also be provided with self-regulation part, promptly this self-regulation part is a spring spacer bar 37, one end of spring spacer bar 37 is connected in the middle part of described slewing rollers pole 35, and its other end is connected with described first groups of holders 311; And described slewing rollers pole 35 is hinged with described first groups of holders 311 or other known rotating modes are connected; Like this, when walking dolly 3 moves, utilize the resilient force of 37 pairs of slewing rollers 34 of spring spacer bar, the height and position of slewing rollers 34 can be adjusted automatically with the concavo-convex situation of tunnel inwall side surface, thus, utilize the acting in conjunction of slewing rollers 34, slewing rollers pole 35 and spring spacer bar 37, guarantee that splash guard (containing cushion coat) and tunnel preliminary bracing basal plane are closely connected, and can manually adjust the splash guard tightness of (containing cushion coat), thereby improved the laying construction quality of splash guard, reduced difficulty of construction.But self-regulation part of the present utility model also is not limited to spring spacer bar, also can adopt the parts of other automatically retractables, can adjust automatically with the concavo-convex situation of tunnel inwall side surface as long as guarantee the height and position of slewing rollers.
Further, as shown in Figure 1, describedly be used for the servicing unit that the tunnel water proofing plate lays and also comprise two magazine, be respectively applied for deposit splash guard and be arranged at splash guard and tunnel preliminary bracing basal plane between cushion coat.Described magazine comprises material stock roller 6, is provided with the material stock support 7 that is used to support splash guard or cushion coat on described material stock roller 6, and described material stock roller 6 can be connected with the bottom of described arch support 1 rotationally.Like this, splash guard or cushion coat can be set around material stock roller 6 and be derived by material stock roller 6, thereby extend on the guide roller 4.
Further, as shown in Figure 1, described arch support 1 is cross-linked to form by many groups column 11 and horizontally disposed many group crossbeams 12 of vertical setting, and described column 11 and described crossbeam 12 are steel work, thereby guarantee that arch support 1 has enough support strengths.
Further, be provided with a plurality of moving runner (not shown)s in the bottom surface of described arch support 1, thereby make arch support 1 to move, guarantee that splash guard is layed in the whole tunnel along tunnel depth direction.
In use, comprise following method step:
Step 10: splash guard is wound on the material stock roller, and splash guard extends and is covered on the guide roller;
Step 20: twitch splash guard, make splash guard pass the gap between two nip rolls of little kickstand, be set around on the slewing rollers on described dolly support top, and fit tightly with internal layer surface, tunnel;
Step 30: colligation is splash guard fixedly;
Step 40: the dolly that is movably walking, two nip rolls clamping splash guards and rotation in opposite directions drag splash guard simultaneously and are deployed on the guide roller;
Step 50: adjust the splash guard tightness; This is a prior art, is not described in detail at this;
Step 60: repeating step 30 to 50, lay until the splash guard of finishing arched tunnel one anchor ring;
Step 70: the rollback walking dolly, the material stock roller that reverses simultaneously makes the splash guard backrush;
Step 80: another anchor ring of splash guard is not laid in mobile arch support to tunnel, repeats above-mentioned steps 30 to 60, finishes the laying of whole tunnel water proofing plate.
In addition, before laying splash guard, promptly before above-mentioned steps 10, also need to lay cushion coat on tunnel preliminary bracing basal plane, concrete steps comprise
Step 1: cushion coat is wound on the material stock roller, and cushion coat extends and is covered on the guide roller;
Step 2: twitch cushion coat, make cushion coat pass the gap between two nip rolls of little kickstand, be set around on the slewing rollers on described dolly support top, and fit tightly with tunnel preliminary bracing basal plane;
Step 3: thermoplasticity packing ring and cushion coat entirely are fixed on the tunnel preliminary bracing basal plane with nailing;
Step 4: the dolly that is movably walking, two nip rolls clamping cushion coats and rotation in opposite directions drag cushion coat simultaneously and are deployed on the guide roller;
Step 5: adjust the cushion coat tightness; This is a prior art, is not described in detail at this;
Step 6: repeating step 3 to 5, lay until the cushion coat of finishing arched tunnel one anchor ring;
Step 7: the rollback walking dolly, the material stock roller that reverses simultaneously makes the cushion coat backrush.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (8)
1. one kind is used for the servicing unit that the tunnel water proofing plate is laid, and it is characterized in that, the described servicing unit that is used for the laying of tunnel water proofing plate comprises:
Arch support;
Guide rail is provided with along described arch support lateral profile;
A plurality of guide rollers, the laterally parallel described guide rail inboard of being located at;
Walking dolly, vertically be arranged on the described guide rail, this walking dolly comprises the road wheel that matches with described guide rail at least, drive the driving mechanism that described walking dolly vertically moves along described guide rail, control the locking mechanism of described walking dolly location, the hold assembly of the described splash guard of clamping, and guide the guiding part that described splash guard extends to described tunnel inwall one side.
2. the servicing unit that is used for the laying of tunnel water proofing plate as claimed in claim 1, it is characterized in that, described walking dolly also comprises little kickstand, described little kickstand comprises first groups of holders and second groups of holders vertically is set, and is provided with connecting rod between described first groups of holders and described second groups of holders; Bottom in described first groups of holders and described second groups of holders is respectively equipped with described road wheel, be provided with described guiding part on the top of described first groups of holders, described guiding part is slewing rollers, described slewing rollers can be positioned an end of slewing rollers pole rotationally, and the other end of described slewing rollers pole is connected with described first groups of holders; Be provided with described hold assembly on described connecting rod, described hold assembly comprises two nip rolls that can be rotationally connected with on the described connecting rod, has certain interval between described two nip rolls.
3. the servicing unit that is used for the laying of tunnel water proofing plate as claimed in claim 2 is characterized in that, is lifted with Working gantry respectively on the top of described first groups of holders and described second groups of holders.
4. the servicing unit that is used for the laying of tunnel water proofing plate as claimed in claim 3 is characterized in that, described first groups of holders is connected by the suspension pole of extending laterally with described Working gantry.
5. as claim 2 or the 3 or 4 described servicing units that are used for the laying of tunnel water proofing plate, it is characterized in that, described slewing rollers pole can be connected rotationally with described first groups of holders, one end of one spring spacer bar is connected in the middle part of described slewing rollers pole, and its other end is connected with described first groups of holders.
6. the servicing unit that is used for the laying of tunnel water proofing plate as claimed in claim 1, it is characterized in that, the described servicing unit that is used for the laying of tunnel water proofing plate also comprises at least one magazine, described magazine comprises the material stock roller, be provided with the material stock support on described material stock roller, described material stock roller can be connected with the bottom of described arch support rotationally.
7. the servicing unit that is used for the laying of tunnel water proofing plate as claimed in claim 1 is characterized in that, described arch support is cross-linked to form by many groups column and horizontally disposed many group crossbeams of vertical setting.
8. the servicing unit that is used for the laying of tunnel water proofing plate as claimed in claim 7 is characterized in that, is provided with a plurality of moving runners in the bottom surface of described arch support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201008924U CN202039867U (en) | 2011-04-08 | 2011-04-08 | Auxiliary device for pavement of tunnel waterproof boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201008924U CN202039867U (en) | 2011-04-08 | 2011-04-08 | Auxiliary device for pavement of tunnel waterproof boards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202039867U true CN202039867U (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201008924U Expired - Fee Related CN202039867U (en) | 2011-04-08 | 2011-04-08 | Auxiliary device for pavement of tunnel waterproof boards |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202039867U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226402A (en) * | 2011-04-08 | 2011-10-26 | 中铁三局集团有限公司 | Auxiliary device and method used for laying tunnel waterproofing plates |
| CN102367735A (en) * | 2011-12-03 | 2012-03-07 | 长安大学 | Back-to-back waterstop installation equipment for tunnel construction joint |
| CN109578031A (en) * | 2018-12-26 | 2019-04-05 | 天地科技股份有限公司 | The active temporary support device of shield type speedy drivage system |
-
2011
- 2011-04-08 CN CN2011201008924U patent/CN202039867U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226402A (en) * | 2011-04-08 | 2011-10-26 | 中铁三局集团有限公司 | Auxiliary device and method used for laying tunnel waterproofing plates |
| CN102226402B (en) * | 2011-04-08 | 2014-02-12 | 中铁三局集团有限公司 | Auxiliary device and method used for laying tunnel waterproofing plates |
| CN102367735A (en) * | 2011-12-03 | 2012-03-07 | 长安大学 | Back-to-back waterstop installation equipment for tunnel construction joint |
| CN102367735B (en) * | 2011-12-03 | 2013-09-11 | 长安大学 | Back-to-back waterstop installation equipment for tunnel construction joint |
| CN109578031A (en) * | 2018-12-26 | 2019-04-05 | 天地科技股份有限公司 | The active temporary support device of shield type speedy drivage system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20120408 |