CN206668286U - A kind of needle beam type lining trolley - Google Patents
A kind of needle beam type lining trolley Download PDFInfo
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- CN206668286U CN206668286U CN201720441478.7U CN201720441478U CN206668286U CN 206668286 U CN206668286 U CN 206668286U CN 201720441478 U CN201720441478 U CN 201720441478U CN 206668286 U CN206668286 U CN 206668286U
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- needle beam
- backform
- bed die
- flange
- post
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Abstract
The utility model discloses a kind of needle beam type lining trolley, its structure includes：Backform flange post,Backform supporting plate,Backform flange pedestal,Top template,Backform adhesive piece,Backform run-through board,Rigidity backform connector,Backform connector pole,Side form flange post,Side form supporting plate,Side form flange pedestal,Side template,Side form connector pole,Logical beam is filled the span of a man's arms channel-section steel ring,Working window,Bed die flange post,Bed die supporting plate,Bed die flange pedestal,End template,Bed die connector pole,Band steel,Stress frame supporting steel,Stress frame channel-section steel,Stress frame inner panel,Hydraulic top,Movable telescopic bar,The utility model needle beam type lining trolley needle beam is provided with needle beam lining cutting platform bottom plate,Needle beam groove frame,Needle beam dividing plate,Needle beam lining cutting platform top plate,Needle beam lining cutting platform through post,Screw jack,Liquid presses piston pole,Mechanical activity bar,Hydraulic station block,Realize high with lining cutting surface smoothness,Lining cutting is fast,The advantages of effect is high,It is widely used in the construction of the engineerings such as railway.
Description
Technical field
The utility model is a kind of needle beam type lining trolley, belongs to lining trolley apparatus field.
Background technology
Chassis, full name lining trolley, it is mainly used in tunnel, diversion tunnel, two lining concrete cast use, and chassis is divided into two again
Kind structure one kind is that traveling type another kind is needle beam type, and chassis is mainly made up of portal frame and template, the main load-bearing of portal frame, mould
Plate is designed according to tunnel-shaped, and it has the advantages of automatically walk, hydraulic pressure is automatically positioned the demoulding.
Prior art discloses Application No.：A kind of CN201520644410.X tunnel lining trolley, including lining cutting platform
Car body, the bracket dress for bearing belt system weight and can roll is provided with the lateral wall of the lining trolley body
Put.The utility model has the advantages of simple in construction, easy to operate, can reduce the influence to belt slag-tapping system using it,
Substantially increase lining construction efficiency and belt holder walks precision, not only increase the security of operation, and people, thing are disappeared
Consumption is greatly reduced, and reduces construction cost, reduces the engineering time, but the lining cutting rough surface of prior art lining trolley,
Lining cutting is slow, effect is low.
Utility model content
In view of the deficienciess of the prior art, the utility model purpose is to provide a kind of needle beam type lining trolley, to solve
The lining cutting rough surface of lining trolley, the problem of lining cutting is slow, effect is low.
To achieve these goals, the utility model is to realize by the following technical solutions：A kind of needle beam type lining cutting
Chassis, its structure include：Backform flange post, backform supporting plate, backform flange pedestal, top template, backform adhesive piece, backform insertion
Plate, rigidity backform connector, backform connector pole, side form flange post, side form supporting plate, side form flange pedestal, side template, side
Mould connector pole, Tong Liang fill the span of a man's arms channel-section steel ring, working window, bed die flange post, bed die supporting plate, bed die flange pedestal, end template,
Bed die connector pole, band steel, stress frame supporting steel, stress frame channel-section steel, stress frame inner panel, hydraulic top, movable telescopic
Bar, the backform flange post are connected with backform flange pedestal by top template, and the rigidity backform connector is installed on backform
Above connector pole, the backform adhesive piece is connected with backform run-through board；
The backform supporting plate is connected with rigidity backform connector by backform flange post, the side form flange post and side
Side template is provided between modulus method orchid pedestal, the side form supporting plate is connected with side form connector pole by side form flange post,
Fill the span of a man's arms channel-section steel ring and working window of the logical beam is installed on side form flange post periphery, the bed die flange post and bed die flange pedestal it
Between be provided with end template, the bed die supporting plate is connected with bed die connector pole by bed die flange post, band steel installation
In bed die flange post bottommost, the stress frame supporting steel is installed on above stress frame channel-section steel, the stress frame inner panel
It is installed on inside stress frame supporting steel, the stress frame supporting steel is connected with hydraulic top by movable telescopic bar；
The needle beam type lining trolley needle beam is provided with needle beam lining cutting platform bottom plate, needle beam groove frame, needle beam dividing plate, needle beam lining cutting platform
Top plate, needle beam lining cutting platform through post, screw jack, liquid presses piston pole, mechanical activity bar, hydraulic station block, the needle beam lining cutting platform
Bottom plate is installed on below needle beam lining cutting platform top plate, and the needle beam groove frame is connected with needle beam dividing plate, the needle beam lining cutting platform through post
Needle beam groove frame is provided between screw jack, the liquid presses piston pole is connected with mechanical activity bar by hydraulic station block.
Further, the needle beam type lining trolley outrigger is by support needle beam plate 24, two-way silk top 25, lining cutting needle beam guide rail
26th, needle beam road wheel 27 forms.
Further, the support needle beam plate 24 is installed on the two-way lower section of silk top 25.
Further, the two-way silk top 25 is connected with lining cutting needle beam guide rail 26.
Further, the lining cutting needle beam guide rail 26 is flexibly connected with needle beam road wheel 27.
Further, the screw jack 34 is machine components, and loading functional is strong, and bounce-back top power is big.
Further, the liquid presses piston pole 35 is machine components, and flexibility ratio is high, facilitates mechanical movement.
The beneficial effects of the utility model：The utility model needle beam type lining trolley needle beam be provided with needle beam lining cutting platform bottom plate,
Needle beam groove frame, needle beam dividing plate, needle beam lining cutting platform top plate, needle beam lining cutting platform through post, screw jack, liquid presses piston pole, machinery are living
Lever, hydraulic station block, realize with the advantages of lining cutting surface smoothness is high, lining cutting is fast, effect is high, be widely used in railway etc.
In the construction of engineering.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, other spies of the present utility model
Sign, objects and advantages will become more apparent upon：
Fig. 1 is that a kind of the complete of diameter 5m needle beam trolleys of the utility model regards structural representation.
Fig. 2 is a kind of main structure diagram of needle beam type lining trolley of the utility model.
Fig. 3 is a kind of forward sight structural representation of needle beam type lining trolley of the utility model.
Fig. 4 is a kind of backsight structural representation of needle beam type lining trolley of the utility model.
Fig. 5 is a kind of cross section structure diagram of needle beam type lining trolley outrigger of the utility model.
Fig. 6 is a kind of side structure schematic view of needle beam type lining trolley needle beam of the utility model.
Fig. 7 is that a kind of backform of needle beam type lining trolley of the utility model makes structural representation one.
Fig. 8 is that a kind of backform of needle beam type lining trolley of the utility model makes structural representation two.
Fig. 9 is that a kind of side form of needle beam type lining trolley of the utility model makes structural representation one.
Figure 10 is that a kind of side form of needle beam type lining trolley of the utility model makes structural representation two.
Figure 11 is that a kind of bed die of needle beam type lining trolley of the utility model makes structural representation one.
Figure 12 is that a kind of bed die of needle beam type lining trolley of the utility model makes structural representation two.
In figure：Backform flange post -1, backform supporting plate -2, backform flange pedestal -3, top template -4, backform adhesive piece -5,
Backform run-through board -6, rigidity backform connector -7, backform connector pole -8, side form flange post -9, side form supporting plate -10, side
Modulus method orchid pedestal -11, side template -12, side form connector pole -13, Tong Liang are filled the span of a man's arms channel-section steel ring -14, working window -15, bed die method
Lan Zhu -16, bed die supporting plate -17, bed die flange pedestal -18, end template -19, bed die connector pole -20, band steel -21, by
Power skeletal support steel -22, stress frame channel-section steel -23, support needle beam plate -24, two-way silk top -25, lining cutting needle beam guide rail -26, pin
Beam road wheel -27, needle beam lining cutting platform bottom plate -28, needle beam groove frame -29, needle beam dividing plate -30, needle beam lining cutting platform top plate -31, stress
Skeleton inner panel -32, needle beam lining cutting platform through post -33, screw jack -34, liquid presses piston pole -35, mechanical activity bar -36, hydraulic pressure
Stand block -37, hydraulic top -38, movable telescopic bar -39.
Embodiment
Technological means, creation characteristic, reached purpose and effect to realize the utility model are easy to understand, below
With reference to embodiment, the utility model is expanded on further.
Fig. 1-Figure 12 is referred to, the utility model provides a kind of needle beam type lining trolley：Its structure includes：Backform flange post
1st, backform supporting plate 2, backform flange pedestal 3, top template 4, backform adhesive piece 5, backform run-through board 6, rigidity backform connector 7,
Backform connector pole 8, side form flange post 9, side form supporting plate 10, side form flange pedestal 11, side template 12, side form connector branch
Bar 13, Tong Liang fill the span of a man's arms channel-section steel ring 14, working window 15, bed die flange post 16, bed die supporting plate 17, bed die flange pedestal 18, bed die
Plate 19, bed die connector pole 20, band steel 21, stress frame supporting steel 22, stress frame channel-section steel 23, stress frame inner panel 32,
Hydraulic top 38, movable telescopic bar 39, the backform flange post 1 are connected with backform flange pedestal 3 by top template 4, the steel
Property backform connector 7 be installed on the top of backform connector pole 8, the backform adhesive piece 5 is connected with backform run-through board 6；
The backform supporting plate 2 is connected with rigidity backform connector 7 by backform flange post 1, the side form flange post 9
Side template 12 is provided between side form flange pedestal 11, the side form supporting plate 10 passes through side form method with side form connector pole 13
Blue post 9 is connected, and fill the span of a man's arms channel-section steel ring 14 and working window 15 of the logical beam is installed on the periphery of side form flange post 9, the bed die flange
End template 19 is provided between post 16 and bed die flange pedestal 18, the bed die supporting plate 17 passes through bottom with bed die connector pole 20
Modulus method orchid post 16 is connected, and the band steel 21 is installed on the bottommost of bed die flange post 16, and the stress frame supporting steel 22 is installed
Above stress frame channel-section steel 23, the stress frame inner panel 32 is installed on inside stress frame supporting steel 22, the stress bone
Frame supporting steel 22 is connected with hydraulic top 38 by movable telescopic bar 39；
The needle beam type lining trolley needle beam is provided with needle beam lining cutting platform bottom plate 28, needle beam groove frame 29, needle beam dividing plate 30, needle beam
Lining cutting platform top plate 31, needle beam lining cutting platform through post 33, screw jack 34, liquid presses piston pole 35, mechanical activity bar 36, hydraulic station block
37, the needle beam lining cutting platform bottom plate 28 is installed on the lower section of needle beam lining cutting platform top plate 31, the needle beam groove frame 29 and needle beam dividing plate 30
It is connected, needle beam groove frame 29, the liquid presses piston pole 35 is provided between the needle beam lining cutting platform through post 33 and screw jack 34
It is connected with mechanical activity bar 36 by hydraulic station block 37, the needle beam type lining trolley outrigger is by support needle beam plate 24, two-way
Silk top 25, lining cutting needle beam guide rail 26, needle beam road wheel 27 form, and the support needle beam plate 24 is installed on the two-way lower section of silk top 25,
The two-way silk top 25 is connected with lining cutting needle beam guide rail 26, and the lining cutting needle beam guide rail 26 connects with the activity of needle beam road wheel 27
Connect, the screw jack 34 is machine components, and loading functional is strong, and bounce-back top power is big, and the liquid presses piston pole 35 is machinery zero
Part, flexibility ratio is high, facilitates mechanical movement.
During the use of needle beam type lining trolley, during needle girder trolley lining cutting, bottom, side, top disposal molding, stand
Mould, form removal are completed by hydraulic jack, and positioning centering is performed by the vertical oil cylinder of base and leveling cyclinder, and chassis is needle beam type, installation
Hoist engine on chassis performs relative motion punching block and needle beam, and chassis can move forward, punching block operation principle, pacifies on punching block
Three groups of hydraulic jacks have been filled, formwork erection, form removal work can be completed, screw jack is installed on backform and Bian Mo correspondence position
34, oil cylinder stretches out, and after punching block positioning, screws screw jack 34, so ensures lining cutting accuracy of gauge, and mitigates oil cylinder load
Lotus, during the demoulding, first take off backform, then de- left and right Bian Mo, last needle beam with the vertical oil cylinder of supporting leg upwards jacking and rise, make whole platform
Car rises, and bed die departs from concrete, and carrying out practically step is as follows：Hydraulic system withdraws needle beam load-bearing supporting leg；Start hoist engine
Structure runs needle beam to next position in storehouse to be poured；Hydraulic system expenditure load-bearing supporting leg is in place；Locking plug template is removed；Hydraulic system collapses
Top template；Both sides cheek board and anti-floating frame are collapsed manually；Measurement correction needle beam and hydraulic system lifting end template 19；Hoisting mechanism
Template is drawn to position in storehouse to be poured and shovel ash, brush releasing agent are carried out to template；Adjust hydraulic system and jack expenditure template and
Anti-floating frame；Measure calibration template；Locking plug template construction, set up pump line；Position in storehouse checks and accepts casting concrete, principle of walking, is arranged on
Two steel wire ropes of hoist engine on needle beam, respectively around the pulley on needle beam end and beam frame, are fixed on needle beam both ends, needle beam
Chassis is advanced with punching block fulcrum relative motion each other, before the demoulding, shrink base oil cylinder, suspend base in midair, track below needle beam
Fall on bed die road wheel, starting hoist engine moves forward needle beam, puts down base afterwards in place, and oil cylinder is taken off after withstanding on needle beam
After film, the demoulding, starting hoist engine moves its opposite direction, and punching block moves forward, and so moves in circles, it is possible to achieve punching block platform
The integral forward lead of car, positioning principle, the upper and lower motion chassis of the vertical oil cylinder of ram can make longitudinally adjusted, the horizontal stroke on ram
Move oil cylinder can laterally adjust chassis, longitudinally, laterally stability principle solves the problems, such as longitudinal stability, under have the vertical oil cylinder branch of base
Support, above has anti-floating jack to fix, is bound tightly together needle beam and punching block, add the stability of whole chassis, horizontal
It is two pairs of orientable telescopic jacks to stabilising arrangement, on front and rear anti-floating frame, after chassis adjusts, screws jack
34, support needle beam plate 24 ensures chassis lateral stability, formwork erection, and chassis is in place:Utilize additional walking mechanism and chassis hoisting system
Lining cutting position is arrived into chassis walking, operates vertical oil cylinder, base support before and after chassis is firm, and meanwhile fixed bed die, fore side
To oil cylinder, backform oil cylinder, it is in place to adjust left and right side mould and backform, screws screw jack, and pattern board supporting is firm, by survey
Measuring appratus, operate vertical oil cylinder and laterally adjust oil cylinder, make template section consistent with tunnel section center superposition, block head:Adopt
Poured bed die with the wooden model formwork erection blocking concrete that falls apart and poured chassis after formwork erection determination, you can carried out bed die part and pour
Build, concrete pours operation window charging through bed die, completes to pour, need to ensure the smooth of concrete surface when pouring, reduces
Bubble, work of vibrating use form vibrator, and also can be cast in bed die by immersion vibrator side mould if necessary has poured
Cheng Hou, side mould pour beginning, and concrete charging aperture is still the operation window on the mould of side, in order to ensure the uniform force of chassis and
Pouring quality, the concreting of left and right mould should be adjusted when side mould pours, make the concrete surface difference in height on its both sides little
In 5cm, necessary work of vibrating will be carried out after certain altitude by pouring, and it is backform that backform, which is poured after immediately side bed die pours,
Process is poured, concrete is entered by the grouting port of backform, is poured, should observe the situation of pouring in casting process at any time, when
When concreting is full, the conveying of concrete placings pump should be stopped immediately, and promote backform sprue gate pinboard to seal and pour window, it is complete
Cheng Hou, carry out adhesion type and vibrate, after the completion of all die faces of concrete curing pour, 1 day or so mixed will be carried out before form removal
Solidifying soil maintenance, it is ensured that its pouring quality demoulding concrete pours maintenance completion, and (concrete strength and stability poured reaches
Regulation requires) after, you can form removal work is carried out, the basic step of the demoulding is substantially as follows：Each spiral supporting jack is unclamped, is started
Hydraulic system；Backform oil cylinder is shunk, backform departs from；Left side oil cylinder is shunk, left side mould departs from；Right side oil cylinder is shunk, the right mould takes off
From；Vertical oil cylinder is stretched out upwards, and bed die departs from.
Screw jack 34 described in the utility model is also known as mechanic jacks, is to pass through screw pair gear transmission, spiral shell by manpower
Bar or ut socket are as top lift part.Normal spiral jack supports weight, simple structure by screw thread self-locking effect, but is driven effect
Rate is low, and return is slow.
Backform flange post 1 of the present utility model, backform supporting plate 2, backform flange pedestal 3, top template 4, backform adhesive piece
5th, backform run-through board 6, rigidity backform connector 7, backform connector pole 8, side form flange post 9, side form supporting plate 10, side form method
Blue pedestal 11, side template 12, side form connector pole 13, Tong Liang are filled the span of a man's arms channel-section steel ring 14, working window 15, bed die flange post 16, bottom
Mould supporting plate 17, bed die flange pedestal 18, end template 19, bed die connector pole 20, band steel 21, stress frame supporting steel 22,
Stress frame channel-section steel 23, support needle beam plate 24, two-way silk top 25, lining cutting needle beam guide rail 26, needle beam road wheel 27, needle beam lining cutting platform
Bottom plate 28, needle beam groove frame 29, needle beam dividing plate 30, needle beam lining cutting platform top plate 31, stress frame inner panel 32, needle beam lining cutting platform through post
33rd, screw jack 34, liquid presses piston pole 35, mechanical activity bar 36, hydraulic station block 37, hydraulic top 38,39, movable telescopic bar
The part that part is universal standard part or those skilled in the art know, its structure and principle all can pass through for this technology personnel
Technical manual learns or known by normal experiment method, the utility model solve the problems, such as be lining trolley lining cutting surface it is thick
It is rough, lining cutting is slow, effect is low, the utility model is combined with each other by above-mentioned part, can be reached with lining cutting surface smoothness
High, the advantages of lining cutting is fast, effect is high, it is widely used in the construction of the engineerings such as railway, it is described in detail below：
The needle beam lining cutting platform bottom plate 28 is installed on the lower section of needle beam lining cutting platform top plate 31, the needle beam groove frame 29 and needle beam every
Plate 30 is connected, and needle beam groove frame 29, the hydraulic piston are provided between the needle beam lining cutting platform through post 33 and screw jack 34
Bar 35 is connected with mechanical activity bar 36 by hydraulic station block 37.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above, for
For those skilled in the art, it is clear that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and without departing substantially from this
In the case of the spirit or essential attributes of utility model, the utility model can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the utility model is by institute
Attached claim rather than described above limit, it is intended that will fall in the implication and scope of the equivalency of claim
All changes are included in the utility model.Any reference in claim should not be considered as to the involved right of limitation
It is required that.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (5)
1. a kind of needle beam type lining trolley, its structure include：Backform flange post (1), backform supporting plate (2), backform flange pedestal
(3), top template (4), backform adhesive piece (5), backform run-through board (6), rigidity backform connector (7), backform connector pole
(8), side form flange post (9), side form supporting plate (10), side form flange pedestal (11), side template (12), side form connector pole
(13), lead to beam to fill the span of a man's arms channel-section steel ring (14), working window (15), bed die flange post (16), bed die supporting plate (17), bed die flange pedestal
(18), end template (19), bed die connector pole (20), band steel (21), stress frame supporting steel (22), stress frame channel-section steel
(23), stress frame inner panel (32), hydraulic top (38), movable telescopic bar (39), the backform flange post (1) and backform flange base
Seat (3) is connected by top template (4), and the rigidity backform connector (7) is installed on above backform connector pole (8), institute
Backform adhesive piece (5) is stated with backform run-through board (6) to be connected, it is characterised in that：
The backform supporting plate (2) is connected with rigidity backform connector (7) by backform flange post (1), the side form flange
Side template (12), the side form supporting plate (10) and side form connector pole are provided between post (9) and side form flange pedestal (11)
(13) it is connected by side form flange post (9), fill the span of a man's arms channel-section steel ring (14) and working window (15) of the logical beam is installed on side form flange
Post (9) periphery, end template (19), the bed die support are provided between the bed die flange post (16) and bed die flange pedestal (18)
Plate (17) is connected with bed die connector pole (20) by bed die flange post (16), and the band steel (21) is installed on bed die flange
Post (16) bottommost, the stress frame supporting steel (22) are installed on above stress frame channel-section steel (23), in the stress frame
Plate (32) is installed on stress frame supporting steel (22) inside, and the stress frame supporting steel (22) passes through activity with hydraulic top (38)
Expansion link (39) is connected；
The needle beam type lining trolley needle beam is provided with needle beam lining cutting platform bottom plate (28), needle beam groove frame (29), needle beam dividing plate (30), pin
Beam lining cutting platform top plate (31), needle beam lining cutting platform through post (33), screw jack (34), liquid presses piston pole (35), mechanical activity bar
(36), hydraulic station block (37), the needle beam lining cutting platform bottom plate (28) are installed on below needle beam lining cutting platform top plate (31), the needle beam
Groove frame (29) is connected with needle beam dividing plate (30), and pin is provided between the needle beam lining cutting platform through post (33) and screw jack (34)
Beam groove frame (29), the liquid presses piston pole (35) are connected with mechanical activity bar (36) by hydraulic station block (37).
A kind of 2. needle beam type lining trolley according to claim 1, it is characterised in that：The needle beam type lining trolley outrigger
It is made up of support needle beam plate (24), two-way silk top (25), lining cutting needle beam guide rail (26), needle beam road wheel (27).
A kind of 3. needle beam type lining trolley according to claim 2, it is characterised in that：Support needle beam plate (24) installation
Below two-way silk top (25).
A kind of 4. needle beam type lining trolley according to claim 2, it is characterised in that：The two-way silk top (25) and lining cutting
Needle beam guide rail (26) is connected.
A kind of 5. needle beam type lining trolley according to claim 2, it is characterised in that：The lining cutting needle beam guide rail (26) with
Needle beam road wheel (27) is flexibly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720441478.7U CN206668286U (en) | 2017-04-25 | 2017-04-25 | A kind of needle beam type lining trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720441478.7U CN206668286U (en) | 2017-04-25 | 2017-04-25 | A kind of needle beam type lining trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668286U true CN206668286U (en) | 2017-11-24 |
Family
ID=60370133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720441478.7U Expired - Fee Related CN206668286U (en) | 2017-04-25 | 2017-04-25 | A kind of needle beam type lining trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206668286U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209388A (en) * | 2018-11-02 | 2019-01-15 | 中铁五局集团第四工程有限责任公司 | A kind of Construction of Silo plate device |
| CN112500192A (en) * | 2020-11-17 | 2021-03-16 | 中铁二十一局集团第三工程有限公司 | Tunnel self-propelled two-lining concrete timing maintenance trolley |
-
2017
- 2017-04-25 CN CN201720441478.7U patent/CN206668286U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209388A (en) * | 2018-11-02 | 2019-01-15 | 中铁五局集团第四工程有限责任公司 | A kind of Construction of Silo plate device |
| CN112500192A (en) * | 2020-11-17 | 2021-03-16 | 中铁二十一局集团第三工程有限公司 | Tunnel self-propelled two-lining concrete timing maintenance trolley |
| CN112500192B (en) * | 2020-11-17 | 2024-03-22 | 中铁二十一局集团第三工程有限公司 | Tunnel self-propelled secondary lining concrete timing maintenance trolley |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20180425 |
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| CF01 | Termination of patent right due to non-payment of annual fee |