CN215848857U - Prefabricated case roof beam steel strand wires unloading of urban rail transit post-tensioning method is worn to restraint frock - Google Patents
Prefabricated case roof beam steel strand wires unloading of urban rail transit post-tensioning method is worn to restraint frock Download PDFInfo
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- CN215848857U CN215848857U CN202122040719.6U CN202122040719U CN215848857U CN 215848857 U CN215848857 U CN 215848857U CN 202122040719 U CN202122040719 U CN 202122040719U CN 215848857 U CN215848857 U CN 215848857U
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Abstract
The utility model discloses a blanking and bundling tool for steel strand of a prefabricated box girder by a post-tensioning method of urban rail transit, belonging to the field of steel strand blanking and bundling tools; the device comprises a simulation pipeline arranged on a supporting leg; one end of the simulation pipeline is provided with a traction mechanism; one end of the steel strand penetrates through the simulation pipeline and then is connected with the traction mechanism, and a grinding wheel cutting machine is further arranged between the end part of the simulation pipeline and the traction mechanism; the simulation pipeline is also provided with a baffle plate capable of limiting the steel strand in the inner cavity of the pipeline; the utility model effectively solves the problems of large blanking error, winding in the pore channel, low efficiency and the like of the steel strand in the process of using the conventional technology.
Description
Technical Field
The utility model relates to the technical field of auxiliary steel bar processing devices, in particular to a blanking and bundling tool for steel strands of a post-tensioning prefabricated box girder of urban rail transit.
Background
In the whole prestress construction process, the most serious quality hidden trouble is prestress loss, and the increase of the channel friction resistance caused by the winding of the steel strand is one of the main reasons of the prestress loss; the urban rail transit precast beam yard is limited by sites and cost, the number of beam-making stations is limited, and the improvement of the construction efficiency of the prestress working procedure and the acceleration of the station turnover rate are of great importance on the basis of the concrete strength of the beam body. After the strength of the concrete of the urban rail transit post-tensioned pre-stressed precast box girder reaches over 60 percent of the design strength, the end mould is removed for pre-tensioning, the strength of the girder body reaches 80 percent of the design strength, the girder body can be moved and carried after the initial tensioning, the strength of the girder body reaches 100 percent of the design strength, and the girder body is not less than 10 days in age for final tensioning and grouting. The steel strand needs to be blanked and bundled before pretensioning.
The former blanking and bundling method mainly comprises the following steps: firstly, in the place between the beam-making stations, 150 x 150mm square timber is put as interim unloading storage platform according to longitudinal separation for 1.5m ~ 2m, and the needs length is dragged out to the manual work cooperation pay off rack, and after 50m steel tape recheck, adopt abrasive cut-off machine to cut off, single pore steel strand braid back, the whole bundle of hoist engine penetrates the roof beam body prestressing force pore canal. According to the method, the blanking length error is large due to natural sagging of the steel strands between the square timbers, and the problems that the steel strands are easy to pollute, the construction efficiency is low and the like exist; and secondly, hanging the steel strand pulling machine at the beam end, and feeding the single steel strand to the prestressed duct until the whole duct is designed with the number of steel strands. Although the method has high construction efficiency, the steel strand is easy to wind in the prestressed duct of the beam body, so that the prestress loss is caused, and the prestress construction quality is influenced.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the blanking and bundling tool for the steel strand of the prefabricated box girder in the post-tensioning method of the urban rail transit is provided, and the problems that the steel strand is large in blanking error, wound in a pore channel, low in efficiency and the like in the process of using the conventional technology are solved.
In order to solve the problems, the utility model provides the following technical scheme:
a blanking and bundling tool for steel strand of prefabricated box girder in urban rail transit post-tensioning method; the device comprises a simulation pipeline arranged on a supporting leg; one end of the simulation pipeline is provided with a traction mechanism; one end of the steel strand penetrates through the simulation pipeline and then is connected with the traction mechanism, and a grinding wheel cutting machine is further arranged between the end part of the simulation pipeline and the traction mechanism; and a baffle plate capable of limiting the steel strand in the pipeline is also arranged on the simulation pipeline.
Preferably, the simulation pipeline consists of a plurality of first steel pipe units and a plurality of second steel pipe units; the adjacent first steel pipe units and the second steel pipe units are connected end to end.
Furthermore, the adjacent first steel pipe unit and the second steel pipe unit are detachably connected.
Furthermore, the connecting side of the first steel pipe unit and the second steel pipe unit is of an end structure which is sleeved inside and outside, and the outer side parts of the end parts of the adjacent first steel pipe unit and the second steel pipe unit are also provided with paired fixing plates; the two opposite fixing plates are connected through bolts.
Preferably, the traction mechanism comprises a movable frame; a press roller for clamping the steel strand is arranged on the frame; the compression roller is connected with the output shaft of the speed reduction gearbox, and the input end of the speed reduction gearbox is connected with the motor.
Furthermore, the motor is a structure powered by an external power supply, and the motor is connected with the control switch through a lead
Preferably, the supporting legs are triangular structures arranged below the simulation pipeline; the baffle is detachably mounted on the simulation pipeline.
The utility model has the beneficial effects that:
the utility model breaks through the traditional blanking mode of the steel strand of the urban rail precast box girder, innovatively designs the steel pipe simulation pore channel and the traction cutting mechanism, prevents the steel strand from being wound by utilizing the low friction force of the simulation pore channel, avoids the pollution of the sand and the sand of the steel strand in rainy days, solves the problem of large blanking error of the traditional steel strand and improves the construction quality of the prestress working procedure; only two workers are needed for operation, the disassembly and the assembly are rapid, the conversion field is flexible, and the construction efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention in an embodiment;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
description of reference numerals: 1. the device comprises a first steel pipe unit, a second steel pipe unit, a grinding wheel cutting machine, a traction mechanism, a control switch, a baffle, a fixing plate, a pressing roller, a speed reduction gearbox, a motor, a simulation pipeline, a supporting leg and a grinding wheel cutting machine, wherein the first steel pipe unit 2, the second steel pipe unit 3, the grinding wheel cutting machine 4, the traction mechanism 5, the control switch 6, the baffle 7, the fixing plate 8, the pressing roller 9, the speed reduction gearbox 10, the motor 11, the simulation pipeline 12 and the supporting leg.
Detailed Description
The utility model will be further described with reference to the following drawings and specific embodiments:
example (b):
referring to fig. 1, the embodiment provides a blanking and bundling tool for a steel strand of a prefabricated box girder in an urban rail transit post-tensioning method; it comprises a simulation pipeline 11 arranged on a supporting leg 12; one end of the simulation pipeline 11 is provided with a traction mechanism 4; one end of the steel strand penetrates through the simulation pipeline 11 and then is connected with the traction mechanism 4, and a grinding wheel cutting machine 3 is arranged between the end part of the simulation pipeline 11 and the traction mechanism 4; and a baffle 6 capable of limiting the steel strand in the pipeline is also arranged on the simulation pipeline 11.
The simulation pipeline consists of a plurality of first steel pipe units 1 and a plurality of second steel pipe units 2; the adjacent first steel pipe units 1 and the second steel pipe units 2 are connected end to end. In this embodiment, the first steel pipe unit 1 is a 3m long steel pipe structure, the second steel pipe unit is a 5-6 m long steel pipe structure, the first steel pipe unit 1 is disposed at a position corresponding to the tail of the simulation pipeline 11, and the baffle 6 is installed on the first steel pipe unit 1.
The adjacent first steel pipe unit 1 and the second steel pipe unit 2 are detachably connected.
The connecting side of the first steel pipe unit 1 and the second steel pipe unit 2 is of an end structure which is sleeved inside and outside, and the outer side parts of the end parts of the adjacent first steel pipe unit 1 and the second steel pipe unit 2 are also provided with paired fixing plates 7; the two opposite fixing plates 7 are connected by bolts.
The traction mechanism 4 comprises a movable frame; a press roller 8 for clamping the steel strand is arranged on the frame; the compression roller 8 is connected with the output shaft of the reduction gearbox 9, and the input end of the reduction gearbox 9 is connected with the motor 10.
The motor 10 is a structure supplied with power from an external power source, and the motor 10 is connected with the control switch 5 through a wire
The supporting legs 12 are triangular structures arranged below the simulation pipeline 11; the baffle 6 is detachably mounted on the dummy duct 11.
When using the utility model discloses the device in this embodiment, the steel strand wires are inserted the back by 4 one ends of drive mechanism, and the compression roller 8 presss from both sides tight steel strand wires and provides the power that advances, gets into steel pipe simulation pore, supports to 6 backs to wooden baffle, cuts off by abrasive cutoff machine 3, gets into next circulation, and after satisfying single prestressing force pore steel strand wires radical, demolish 3 meters long steel pipe unit 1, the whole beam body that penetrates after fixed.
Claims (7)
1. The utility model provides a prefabricated case roof beam steel strand wires unloading of urban rail transit post-tensioning method is worn to restraint frock which characterized in that: it comprises a simulation pipeline (11) arranged on a supporting leg (12); one end of the simulation pipeline (11) is provided with a traction mechanism (4); one end of the steel strand penetrates through the simulation pipeline (11) and then is connected with the traction mechanism (4), and a grinding wheel cutting machine (3) is arranged between the end part of the simulation pipeline (11) and the traction mechanism (4); and a baffle (6) capable of limiting the steel strand in the pipeline is also arranged on the simulation pipeline (11).
2. The blanking and bundling tool for steel strand of urban rail transit post-tensioning precast box girder according to claim 1, characterized in that: the simulation pipeline consists of a plurality of first steel pipe units (1) and a plurality of second steel pipe units (2); the adjacent first steel pipe unit (1) and the second steel pipe unit (2) are connected end to end.
3. The blanking and bundling tool for steel strand of urban rail transit post-tensioning precast box girder according to claim 2, is characterized in that: the adjacent first steel pipe unit (1) and the second steel pipe unit (2) are detachably connected.
4. The blanking and bundling tool for steel strand of urban rail transit post-tensioning precast box girder according to claim 3, characterized in that: the connecting side of the first steel pipe unit (1) and the second steel pipe unit (2) is of an end structure which is sleeved inside and outside, and the outer side parts of the end parts of the adjacent first steel pipe unit (1) and the second steel pipe unit (2) are also provided with paired fixing plates (7); the two opposite fixing plates (7) are connected through bolts.
5. The blanking and bundling tool for steel strand of urban rail transit post-tensioning precast box girder according to claim 1, characterized in that: the traction mechanism (4) comprises a movable frame; a press roller (8) for clamping the steel strand is arranged on the frame; the compression roller (8) is connected with an output shaft of the speed reduction gearbox (9), and an input end of the speed reduction gearbox (9) is connected with the motor (10).
6. The blanking and bundling tool for steel strand of urban rail transit post-tensioning precast box girder according to claim 5, characterized in that: the motor (10) is a structure powered by an external power supply, and the motor (10) is connected with the control switch (5) through a lead.
7. The blanking and bundling tool for steel strand of urban rail transit post-tensioning precast box girder according to claim 1, characterized in that: the supporting legs (12) are of triangular structures arranged below the simulation pipeline (11); the baffle (6) is detachably mounted on the simulation pipeline (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122040719.6U CN215848857U (en) | 2021-08-27 | 2021-08-27 | Prefabricated case roof beam steel strand wires unloading of urban rail transit post-tensioning method is worn to restraint frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122040719.6U CN215848857U (en) | 2021-08-27 | 2021-08-27 | Prefabricated case roof beam steel strand wires unloading of urban rail transit post-tensioning method is worn to restraint frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215848857U true CN215848857U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122040719.6U Active CN215848857U (en) | 2021-08-27 | 2021-08-27 | Prefabricated case roof beam steel strand wires unloading of urban rail transit post-tensioning method is worn to restraint frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215848857U (en) |
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2021
- 2021-08-27 CN CN202122040719.6U patent/CN215848857U/en active Active
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