CN205466711U - Portable straining means of prestressing force ballastless track board opens in two -way elder generation - Google Patents
Portable straining means of prestressing force ballastless track board opens in two -way elder generation Download PDFInfo
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- CN205466711U CN205466711U CN201620113159.9U CN201620113159U CN205466711U CN 205466711 U CN205466711 U CN 205466711U CN 201620113159 U CN201620113159 U CN 201620113159U CN 205466711 U CN205466711 U CN 205466711U
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- stretch
- draw
- crane
- lock bridge
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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Abstract
The utility model provides a portable straining means of prestressing force ballastless track board opens in two -way elder generation, including the lock bridge that inclines in advance, side stretch -draw roof beam, hold lock bridge and end stretch -draw roof beam in advance, incline in advance lock bridge and side stretch -draw roof beam respectively through the assembly of a pair of curb girder linear guide on two walking beam, walking beam be equipped with with orbit complex wheel, walking direction wheelset, wheel gear motor and curb girder advance and retreat hydro -cylinder, walking beam's both ends are equipped with the portal frame respectively, assemble crane, crane lift cylinder and crane lift guider on two portal frames respectively, the end in advance the lock bridge be in through the assembly of a pair of end beam linear guide respectively with end stretch -draw roof beam the following of crane, be equipped with end beam advance and retreat hydro -cylinder on the crane. The utility model discloses can effectively shorten the production preparation cycle, reduce project cost avoids causing industrial pollution, and steel mould fixed mounting production form is favorable to simplifying mould structure, reduce cost, improvement precision simultaneously, and reduce production equipment area and working energy consume.
Description
Technical field
This utility model relates to high speed railway fragments-free track slab and produces equipment, is specifically related to a kind of bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment.
Background technology
At present, two dimension prestressing stretch-draw many employings foundation ditch operating type that CRTS III type bidirectional pre-tensioned prestressing force fragment-free track slab produces, need to build foundation ditch facility pre-buried tensioning equipment, not only Operational preparation cycle length, construction costs height, and owing to pre-buried tensioning equipment can not migrate recycling, industrial pollution also can be caused.Prior art discloses the track plates production line that mould moves, its prestress tensioning equipment is still without the prestressing force pull-mode completely disengaging from former foundation ditch operating type, and whole production equipment is linked to be a production line by transportation system, floor space and operating power consumption are big, the movable-die type mode of production simultaneously, the factor causing die deformation is many, adds complexity and the cost of manufacture of Design of Dies.It addition, the locking of the deformed bar of the existing pre-lock bridge produced for fragment-free track slab and stretch-draw beam and stretch-draw mechanism behaviour work order point operation format, labor intensity is big, inefficiency, each deformed bar discontinuity.
Summary of the invention
The purpose of this utility model is to provide a kind of bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment, the Operational preparation cycle that the two dimension prestressing tensioning equipment produced to solve the track plates of existing foundation ditch operating type exists is long, construction costs is high, the problem causing industrial pollution, and the floor space of the two dimension prestressing tensioning equipment existence of the track plates production of movable-die type and operating power consumption are greatly, the problem that mould structure is complicated and cost of manufacture is high.The purpose of this utility model also resides in by pre-lock bridge and the locking of the deformed bar of stretch-draw beam and the improvement of stretch-draw mechanism, improve locking and the mechanization degree of stretch-draw mechanism, and then solve the troublesome poeration that the most artificial single-point operation deformed bar stretch-draw locking exists.Labor intensity is big, inefficiency and the problem of each deformed bar discontinuity.
The technical scheme realizing above-mentioned purpose is: a kind of bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment, include the pre-lock bridge in side, side stretch-draw beam, hold pre-lock bridge and end stretch-draw beam, the pre-lock bridge in described side and side stretch-draw beam are assemblied in above two walking beams by a pair curb girder line slideway respectively, and this walking beam is provided with and runs wheel, walking guiding wheels, the wheel reducing motor driving vehicle wheel rotation and the curb girder advance and retreat oil cylinder that track coordinates；Described walking beam be respectively arranged at two ends with portal frame, the crane hoist cylinder assemble crane on this two portal frame respectively, being vertically arranged and crane lifting and guiding device, described hold pre-lock bridge and end stretch-draw beam are assemblied in below described crane by a pair end carriage line slideway respectively, and described crane is provided with end carriage advance and retreat oil cylinder.
Further, this bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment is provided with operating console, and this operating console is fixed on the outside of described walking beam.
Further, described lifting and guiding device is made up of spacing guide wheel, the spacing guide wheel in left and right before and after being vertically arranged square tube and be placed in this square tube of one side opening；Described each spacing guide wheel is connected by axle and axle bed are fixing with described crane respectively.
Further, the pre-lock bridge in described side, side stretch-draw beam, pre-lock bridge and end stretch-draw beam is held to be respectively equipped with deformed bar locking device, this deformed bar locking device has the casing being distributed in beam body, be provided with in each casing worm-and-wheel gear and with the worm gear of this worm-and-wheel gear the most hard-wired driving gear；Described casing is also equipped with the sleeve parallel with the axle of described worm gear and overcoat, and described sleeve rotatably coordinates with the sleeve pilot hole on described casing antetheca, and described overcoat is fixing with the overcoat pilot hole on described casing rear wall to be connected；Described sleeve is equipped with driven gear, drive sleeve, drive sleeve spring and adjusting nut, described driven gear and drive sleeve the most successively install with described sleeve matched in clearance, the external diameter of described drive sleeve and the endoporus matched in clearance of described overcoat；Setting gradually sliding sleeve, sliding sleeve spring in described overcoat from front to back, the front end face of described sliding sleeve coordinates with the rear end in contact of described sleeve, the rear end assembling sliding sleeve spring baffle ring of described sliding sleeve spring；Described driving gear engages with described driven gear；The worm screw of described each worm-and-wheel gear is connected by shaft coupling coaxial line respectively and assembles the worm speed-down motor driving worm screw to rotate.
Further, described side stretch-draw beam and end stretch-draw beam are respectively equipped with deformed bar tensioning equipment, this deformed bar tensioning equipment includes stretch-draw beam beam body, bearing in channel-section steel shape is distributed in this stretch-draw beam beam body, two supporting legs of described bearing pass the front panel of described stretch-draw beam beam body and are supported on the lateral surface of track plates mould limit mould, horizontal stretch-draw oil cylinder is fixed outside the back of described bearing, the piston of this stretch-draw oil cylinder is fixing with the rear board of described stretch-draw beam beam body to be connected, the pull bar baffle plate installing tension rod runs through the baffle orifice of each bearing, the pull bar perforation coordinated with tension rod on this pull bar baffle plate is the combination bore being made up of the circular hole combination that the relatively large circular hole of a diameter and a diameter are relatively small, floor is distributed in described stretch-draw beam beam body, each floor and described pull bar baffle fit.
The beneficial effects of the utility model are:
1, this utility model is while abandoning foundation ditch operating type, employing equipment moves, railway plate die from load punching block fixed installation form bidirectional pre-tensioned prestressing force non-fragment orbit board production technology, can effectively shorten the Operational preparation cycle, construction costs is greatly lowered, it is to avoid cause industrial pollution, the production form of punching block fixed installation simultaneously, be conducive to simplifying mould structure, reduce manufacturing cost, improve rigidity and the precision of mould, reduce and produce occupation area of equipment and operating power consumption.
2, this utility model is by pre-lock bridge and the locking of the deformed bar of stretch-draw beam and the improvement of stretch-draw mechanism, substantially increase locking and the mechanization degree of stretch-draw mechanism, and then solve the troublesome poeration that the most artificial single-point operation deformed bar stretch-draw locking exists, labor intensity is big, inefficiency and the problem of each deformed bar discontinuity.
3, compared with the bidirectional pre-tensioned prestressing force non-fragment orbit board assembly line of prior art, equipment is simple, manufacture and operation cost is low, unit fault does not interferes with and produces completely, practical reliable, production Technology goes a step further to standardization, automatization, information-based stepping, it is possible to farthest ensure product quality.
Accompanying drawing explanation
Fig. 1 is this bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment main TV structure schematic diagram.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the right view of Fig. 1.
Fig. 4 is the lifting and guiding device structural representation of this bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment.
Fig. 5 is the main sectional view of deformed bar locking device of this bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the deformed bar tensioning equipment structural representation of this bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment.
Fig. 8 is the pull bar baffle plate front view of this bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment.
Detailed description of the invention
In conjunction with the accompanying drawings and embodiments detailed description of the invention of the present utility model is illustrated.
As shown in Figure 1, Figure 2 and Fig. 3, this bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment, includes for carrying out the pre-lock bridge in side 1 of CRTS III type bidirectional pre-tensioned prestressing force fragment-free track slab two dimension prestressing reinforced bar stretching in length and breadth, side stretch-draw beam 2, holding pre-lock bridge 3 and end stretch-draw beam 4.The pre-lock bridge in described side 1 and side stretch-draw beam 2 are assemblied in above two walking beams 6 by a pair curb girder line slideway 5 respectively, the pre-lock bridge in side 1 and side stretch-draw beam 2 and the two opposing parallel settings of walking beam 6, each walking beam 6 a pair curb girder line slideway 5 above be arranged in parallel, and the axis of curb girder line slideway 5 is vertical with the axis of walking beam 6.Each walking beam 6 is respectively equipped with and runs the wheel 8 that track 7 coordinates, walking guides wheels 9, drive wheel reducing motor 10 and the curb girder advance and retreat oil cylinder 11 of vehicle wheel rotation, wherein, run track 7 and use two one steel rails, wheel 8 assembles two on each walking beam 6, one of them is as adhesion wheel, another is as driven wheel, walking guides wheels 9 and is formed from a pair directive wheel with relative rail head side of rail, same assembling two walking guiding wheels 9 on each walking beam 6, wheel reducing motor 10 coordinates with the wheel 8 as adhesion wheel, each walking beam 6 assembles a pair horizontal and that its axis is vertical with walking beam 6 axis curb girder advance and retreat oil cylinder 11 respectively.nullIt is respectively provided with portal frame 12 at the two ends of two walking beams 6，Crane 13 is assembled respectively on two portal frames 12、The crane hoist cylinder 14 being vertically arranged and crane lifting and guiding device 15，Crane 13 is by the crane entablature running through four root posts of described portal frame 12 entablature and be connected to this four root posts upper end and is connected to the crane base of this four root posts lower end and forms，Crane hoist cylinder 14 on each crane 13 vertically arranged a pair，The upper end of crane hoist cylinder 14 is connected with the entablature of crane 13 by hinged seat，Lower end is connected to below portal frame 12 crossbeam by hinged seat，Crane lifting and guiding device 15 is specifically given by Fig. 4: the square tube 19 that is vertically arranged of four one side openings is fixedly installed on above portal frame 12 entablature，Connecting cross beam is added four upper ends being vertically arranged square tube 19，For increasing by four rigidity being vertically arranged square tube 19、Strength and stability，Spacing guide wheel 20 before and after being respectively provided with in each square tube 19、The spacing guide wheel in left and right 21，Each spacing guide wheel is connected by axle and axle bed are fixing with described crane 13 respectively.The described pre-lock bridge of end 3 and end stretch-draw beam 4 are assemblied in below the base of described crane 13 by a pair end carriage line slideway 16 respectively, and the lower end of described crane 13 arranges the end carriage advance and retreat oil cylinder 17 that axis is vertical with relative end carriage axis.Operating console 18 has the control station base plate being fixed on outside a walking beam 6, and on this base plate, setting has image, data show, voice message, fault alarm, it is provided that semiautomatic control and full auto-programs control operation bench and the seat that mode of operation selects.
Such as Fig. 5, Fig. 6, the pre-lock bridge in side 1, the side stretch-draw beam 2 of this bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment, pre-lock bridge 3 and end stretch-draw beam 4 is held to be respectively equipped with deformed bar locking device, this deformed bar locking device has the casing 22 being distributed in beam body, be provided with in each casing 22 worm-and-wheel gear 23 and with the worm gear of this worm-and-wheel gear 23 the most hard-wired driving gear 24；Each casing 22 is also equipped with the sleeve 25 parallel with the axle of relative worm gear and overcoat 26, and sleeve 25 rotatably coordinates with the sleeve pilot hole on casing 22 antetheca, and overcoat 26 is fixing with the overcoat pilot hole on casing 22 rear wall to be connected；Sleeve 25 is equipped with driven gear 27, drive sleeve 28, drive sleeve spring 29 and adjusting nut 30, driven gear 27 and drive sleeve 28 the most successively install with sleeve 25 matched in clearance, the external diameter of drive sleeve 28 and the endoporus matched in clearance of overcoat 26；Setting gradually sliding sleeve 31, sliding sleeve spring 32 in overcoat 26 from front to back, the front end face of sliding sleeve 31 coordinates with the rear end in contact of sleeve 25, the rear end assembling sliding sleeve spring baffle ring 33 of sliding sleeve spring 32；Described driving gear 24 engages with described driven gear 27；The worm screw of described each worm-and-wheel gear 23 is connected by shaft coupling 34 coaxial line respectively and assembles the worm speed-down motor 35 driving worm screw to rotate.nullDuring the work of above-mentioned deformed bar locking device，Relative deformed bar tension rod is through sleeve 25 endoporus of this device，Worm speed-down motor 35 drives worm-and-wheel gear 23，Driven gear 27 is driven to rotate by driving gear 24，And rotated by the axial compressive force band moving sleeve 25 of drive sleeve spring 29 applying，When sleeve 25 be rotationally advancing be obstructed time，Oppressing sliding sleeve spring 32 by sliding sleeve 31 can make sleeve 25 be moved rearwards by，When the plum blossom-jaw of the sleeve 25 rotated and the locking nut position of deformed bar tension rod are to timing，Sliding sleeve spring 32 promotes sleeve 25 to move forward，Drive locking nut rotation to tighten to put in place simultaneously，After locking nut screwing puts in place，The rotary resistance being subject to due to sleeve 25 is more than the rotation friction that drive sleeve spring 29 applies，Sleeve 25 stops operating，Driven gear 27 dallies，Deformed bar has been locked.
nullSuch as Fig. 7、Fig. 8，Side stretch-draw beam 2 and the end stretch-draw beam 4 of this bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment are respectively equipped with deformed bar tensioning equipment，This deformed bar tensioning equipment includes stretch-draw beam beam body 36，Bearing 37 in channel-section steel shape is distributed in this stretch-draw beam beam body 36，Two supporting legs of each bearing 37 pass the front panel of stretch-draw beam beam body 36 and are supported on the lateral surface of track plates mould limit mould，Horizontal stretch-draw oil cylinder 38 is fixed outside the back of each bearing 37，The piston of this stretch-draw oil cylinder 38 is fixing with the rear board of stretch-draw beam beam body 36 to be connected，The pull bar baffle plate 39 installing tension rod runs through the baffle orifice of each bearing 37，The pull bar perforation coordinated with tension rod on this pull bar baffle plate 39 is the combination bore being made up of the circular hole combination that the relatively large circular hole of a diameter and a diameter are relatively small，Floor 40 is distributed in stretch-draw beam beam body 36，Each floor 40 coordinates with pull bar baffle plate 39.Above-mentioned deformed bar tensioning equipment, uses the structure that the counteracting force of reinforced bar stretching puts on punching block itself, the simple in construction of tensioning equipment own, and work efficiency is high, and stability is good.
This utility model is for the production of CRTS III type bidirectional pre-tensioned prestressing force fragment-free track slab, and tensioning equipment along track 7 length travel, and can be accurately positioned with the track slab steel mould being fixedly mounted in concrete foundation.The pre-lock bridge in side, side stretch-draw beam move forward and backward along curb girder line slideway 5 axis respectively under the driving of curb girder advance and retreat oil cylinder 11.Hold pre-lock bridge, end stretch-draw beam to move forward and backward along end carriage line slideway 16 axis under the driving of end carriage advance and retreat oil cylinder 17 respectively, and make moving up and down of vertical direction with crane 13 under the driving of crane hoist cylinder 14.The pre-lock bridge in side 1 and the pre-lock bridge 3 of end are provided with deformed bar locking device, rotate the locknut on tension rod can be driven to rotate under worm speed-down motor 35 drives, by deformed bar pretension simultaneously.Side stretch-draw beam, end stretch-draw beam are provided with deformed bar tensioning equipment, under stretch-draw oil cylinder 38 drives, by pull bar baffle plate 39, deformed bar are equalized applying stretching force simultaneously, and pull bar baffle plate 39 moves axially and can realize the clutch to tension rod.Side stretch-draw beam 2 and end stretch-draw beam 4 are provided with deformed bar locking device, rotate and the locknut on tension rod can be driven to rotate, locked by the deformed bar after stretch-draw simultaneously under worm speed-down motor 35 drives.
Claims (5)
1. a bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment, include the pre-lock bridge in side (1), side stretch-draw beam (2), hold pre-lock bridge (3) and end stretch-draw beam (4), it is characterized in that: the pre-lock bridge in described side (1) and side stretch-draw beam (2) are assemblied in above two walking beams (6) by a pair curb girder line slideway (5) respectively, this walking beam (6) is provided with and runs wheel (8), walking guiding wheels (9), the wheel reducing motor (10) driving vehicle wheel rotation and curb girder advance and retreat oil cylinder (11) that track (7) coordinates；Described walking beam (6) be respectively arranged at two ends with portal frame (12), the crane hoist cylinder (14) assemble crane (13) on this two portal frame (12) respectively, being vertically arranged and crane lifting and guiding device (15), the pre-lock bridge of described end (3) and end stretch-draw beam (4) are assemblied in below described crane (13) by a pair end carriage line slideway (16) respectively, and described crane (13) is provided with end carriage advance and retreat oil cylinder (17).
Bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment the most according to claim 1, is characterized in that: be provided with operating console (18), this operating console (18) is fixed on the outside of described walking beam (6).
Bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment the most according to claim 1, is characterized in that: described lifting and guiding device (15) is made up of spacing guide wheel (20), the spacing guide wheel in left and right (21) before and after being vertically arranged square tube (19) and be placed in this square tube (19) of one side opening；Described each spacing guide wheel is connected by axle and axle bed are fixing with described crane (13) respectively.
Bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment the most according to claim 1, it is characterized in that: the pre-lock bridge in described side (1), side stretch-draw beam (2), hold pre-lock bridge (3) and end stretch-draw beam (4) be respectively equipped with deformed bar locking device, this deformed bar locking device has the casing (22) being distributed in beam body, is provided with worm-and-wheel gear (23) and the most hard-wired driving gear of the worm gear (24) with this worm-and-wheel gear (23) in each casing (22)；Described casing (22) is also equipped with the sleeve (25) parallel with the axle of described worm gear and overcoat (26), described sleeve (25) rotatably coordinates with the sleeve pilot hole on described casing (22) antetheca, and described overcoat (26) is fixing with the overcoat pilot hole on described casing (22) rear wall to be connected；Described sleeve (25) is equipped with driven gear (27), drive sleeve (28), drive sleeve spring (29) and adjusting nut (30) the most successively, described driven gear (27) and drive sleeve (28) are installed with described sleeve (25) matched in clearance, the external diameter of described drive sleeve (28) and the endoporus matched in clearance of described overcoat (26)；Sliding sleeve (31), sliding sleeve spring (32) is set gradually from front to back in described overcoat (26), the front end face of described sliding sleeve (31) coordinates with the rear end in contact of described sleeve (25), rear end assembling sliding sleeve spring baffle ring (33) of described sliding sleeve spring (32)；Described driving gear (24) engages with described driven gear (27)；The worm screw of described each worm-and-wheel gear (23) is connected by shaft coupling (34) coaxial line respectively and assembles the worm speed-down motor (35) driving worm screw to rotate.
nullBidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment the most according to claim 1，It is characterized in that: described side stretch-draw beam (2) and end stretch-draw beam (4) are respectively equipped with deformed bar tensioning equipment，This deformed bar tensioning equipment includes stretch-draw beam beam body (36)，Bearing (37) in channel-section steel shape is distributed in this stretch-draw beam beam body (36)，Two supporting legs of described bearing (37) pass the front panel of described stretch-draw beam beam body (36) and are supported on the lateral surface of track plates mould limit mould，Horizontal stretch-draw oil cylinder (38) is fixed outside the back of described bearing (37)，The piston of this stretch-draw oil cylinder (38) is fixing with the rear board of described stretch-draw beam beam body (36) to be connected，The pull bar baffle plate (39) installing tension rod runs through the baffle orifice of each bearing (37)，The combination bore that the pull bar perforation that this pull bar baffle plate (39) is upper to be coordinated with tension rod is the circular hole relatively large by a diameter and the relatively small circular hole combination of a diameter is constituted，Floor (40) is distributed in described stretch-draw beam beam body (36)，Each floor (40) coordinates with described pull bar baffle plate (39).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620113159.9U CN205466711U (en) | 2016-02-04 | 2016-02-04 | Portable straining means of prestressing force ballastless track board opens in two -way elder generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620113159.9U CN205466711U (en) | 2016-02-04 | 2016-02-04 | Portable straining means of prestressing force ballastless track board opens in two -way elder generation |
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| CN205466711U true CN205466711U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620113159.9U Expired - Fee Related CN205466711U (en) | 2016-02-04 | 2016-02-04 | Portable straining means of prestressing force ballastless track board opens in two -way elder generation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643792A (en) * | 2016-02-04 | 2016-06-08 | 秦皇岛老虎重工有限公司 | Two-direction pre-tensioned prestressing ballastless track slab movable tensioning equipment |
| CN106166796A (en) * | 2016-08-26 | 2016-11-30 | 中铁局集团物资工贸有限公司 | A kind of stretching bed seat for producing without tiny fragments of stone, coal, etc. formula high-speed railway track plate |
-
2016
- 2016-02-04 CN CN201620113159.9U patent/CN205466711U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643792A (en) * | 2016-02-04 | 2016-06-08 | 秦皇岛老虎重工有限公司 | Two-direction pre-tensioned prestressing ballastless track slab movable tensioning equipment |
| CN105643792B (en) * | 2016-02-04 | 2017-12-05 | 秦皇岛老虎重工有限公司 | Bidirectional pre-tensioned prestressing force fragment-free track slab movable type tensioning equipment |
| CN106166796A (en) * | 2016-08-26 | 2016-11-30 | 中铁局集团物资工贸有限公司 | A kind of stretching bed seat for producing without tiny fragments of stone, coal, etc. formula high-speed railway track plate |
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