CN213061731U - Support device for tensioning tooth block of cast-in-situ box girder of inter-city railway - Google Patents
Support device for tensioning tooth block of cast-in-situ box girder of inter-city railway Download PDFInfo
- Publication number
- CN213061731U CN213061731U CN202021613357.4U CN202021613357U CN213061731U CN 213061731 U CN213061731 U CN 213061731U CN 202021613357 U CN202021613357 U CN 202021613357U CN 213061731 U CN213061731 U CN 213061731U
- Authority
- CN
- China
- Prior art keywords
- screw
- upright post
- lead screw
- bracket
- screw rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a supporting device for tensioning tooth blocks of cast-in-place box girders of intercity railways, which comprises a first lead screw, a second lead screw, a bracket, a connecting rod and a plurality of bracket girders; the lower extreme of first lead screw and the lower extreme of second lead screw all insert in the top of support, the bottom of support is provided with directional wheel and universal wheel, the top of first lead screw is connected through the connecting rod with the top of second lead screw, the upper end of each bracket roof beam is connected on the connecting rod, the lower extreme of each bracket roof beam is located the top of support, the top of support is provided with screw jack, each bracket roof beam is located screw jack's both sides, the device can be convenient for move the jack, and work efficiency is high, the construction cost is low.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction, a strutting arrangement that is used for cast-in-place case roof beam tooth piece stretch-draw of intercity railway is related to.
Background
With the rapid development of bridge engineering in China, the continuous beam is widely applied, the span of the continuous beam is generally 30m-50m, and the height of the continuous beam is generally 1.8m-3.2 m. Because the clearance in the box girder is limited and the tensioning space is insufficient, the jack is difficult to install when the inverted tooth block in the box is tensioned. A plurality of steel strands on a continuous beam are tensioned one by adopting a jack, a support is erected in a continuous beam inner box, holes are reserved in a cast-in-place beam top plate, and tensioning equipment such as a chain block traction jack is adopted to stretch the support erected in the box. During field construction, a single-end tensioning mode is generally adopted, a jack is used for tensioning the steel strands one by one, the tensioning force friction loss is large, meanwhile, the steel strands are likely to be wound in a pipeline, the uniform stress of the steel strands cannot be guaranteed, the construction effect of the prestressed beams is influenced, and the quality is difficult to control; when the integral tensioning mode of the reserved hoisting hole is adopted for tensioning, the tensioning quality is limited by the position precision of the reserved hole, the jack is moved in a transition process, time and labor are wasted, the working efficiency is low, and the construction cost is high. Therefore, the problems existing in the prior art are integrated and improved, and the tooth block tensioning and supporting device suitable for the cast-in-place beam box of the intercity railway is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a strutting arrangement for cast-in-place case roof beam tooth piece stretch-draw of intercity railway, the device can be convenient for remove the jack, and work efficiency is high, and construction cost is low.
In order to achieve the purpose, the support device for tensioning the tooth block of the intercity railway cast-in-place box girder comprises a first lead screw, a second lead screw, a bracket, a connecting rod and a plurality of bracket girders;
the lower extreme of first lead screw and the lower extreme of second lead screw all insert in the top of support, and the bottom of support is provided with directional wheel and universal wheel, and the top of first lead screw is connected through the connecting rod with the top of second lead screw, and the upper end of each bracket roof beam is connected on the connecting rod, and the lower extreme of each bracket roof beam is located the top of support, and the top of support is provided with screw jack, and each bracket roof beam is located screw jack's both sides.
The support comprises four stand columns and four third screw rods, wherein one stand column corresponds to one third screw rod, the upper end of each third screw rod is inserted into and sleeved in the lower end of the stand column, the lower end of the stand column is provided with a first adjusting screw nut matched with the third screw rod, the number of the directional wheels is two, and the number of the universal wheels is two, wherein the first two fixed wheels are arranged at the lower end of the first third screw rod, the second directional wheel is arranged at the lower end of the second third screw rod, the first universal wheel is arranged at the lower end of the third screw rod, and the second universal wheel is arranged at the lower end of the fourth third screw rod;
the lower ends of the adjacent upright columns are connected through a first horizontal cross rod, and the upper ends of the adjacent upright columns are connected through a second horizontal cross rod;
the lower end of the bracket beam is fixed on a second horizontal cross rod between a first vertical rod and a second vertical rod, the lower end of a first lead screw is inserted into and sleeved with the upper end of a third stand column, the lower end of a second lead screw is inserted into and sleeved with the upper end of a fourth stand column, a second adjusting screw nut matched with the first lead screw is arranged at the upper end of the third stand column, and a third adjusting screw nut matched with the second lead screw is arranged at the upper end of the fourth stand column.
The screw jack is fixed on the second horizontal cross rod between the first upright post and the second upright post.
And the inclined rods are arranged between the first stand column and the second stand column and between the third stand column and the fourth stand column.
The middle parts of the second stand column and the third stand column as well as the middle part of the first stand column and the fourth stand column are connected through a third horizontal cross rod.
The utility model discloses following beneficial effect has:
a strutting arrangement for be used for cast-in-place case roof beam tooth piece stretch-draw of intercity railway when concrete operation, through the height of adjusting each third lead screw, adjust tensioning equipment's height to tooth piece stretch-draw on the different case roof beams of adaptation makes its free walking at continuous beam inner box, screw jack not only can be vertical spacing, and can be when installation tensioning equipment, in top push tensioning jack gets into its corresponding draw-in groove to the limiting plate, tooth piece stretch-draw is accomplished to quality assurance volume, the utility model discloses can be applicable to the strutting arrangement of tooth piece on the not enough continuous beam of bridge incasement stretch-draw headroom to simple structure, convenient operation, the efficiency of construction is high, and is with low costs, can effectively avoid the current various problems that move tensioning jack and bring.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a side view of the present invention.
Wherein, 1 is a universal wheel, 2 is a directional wheel, 31 is a first screw rod, 32 is a second screw rod, 33 is a third screw rod, 41 is a first adjusting screw nut, 42 is a second adjusting screw nut, 5 is a connecting rod, 6 is a vertical column, 7 is a diagonal rod, 81 is a first horizontal cross rod, 82 is a second horizontal cross rod, 83 is a third horizontal cross rod, 9 is a screw jack, and 10 is a bracket beam.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1 and 2, the support device for tensioning the tooth block of the cast-in-place box girder of the intercity railway of the present invention comprises a first lead screw 31, a second lead screw 32, a bracket, a connecting rod 5 and a plurality of bracket girders 10; the lower end of the first lead screw 31 and the lower end of the second lead screw 32 are inserted into the top of the support, the bottom of the support is provided with a directional wheel 2 and a universal wheel 1, the top of the first lead screw 31 is connected with the top of the second lead screw 32 through a connecting rod 5, the upper end of each bracket beam 10 is connected onto the connecting rod 5, the lower end of each bracket beam 10 is located at the top of the support, the top of the support is provided with a screw jack 9, and each bracket beam 10 is located on two sides of the screw jack 9.
The support comprises four upright posts 6 and four third screw rods 33, wherein one upright post 6 corresponds to one third screw rod 33, the upper end of each third screw rod 33 is inserted into and sleeved in the lower end of the upright post 6, the lower end of the upright post 6 is provided with a first adjusting screw nut 41 matched with the third screw rod 33, the number of the directional wheels 2 is two, and the number of the universal wheels 1 is two, wherein the first two fixed wheels are arranged at the lower end of the first third screw rod 33, the second directional wheel 2 is arranged at the lower end of the second third screw rod 33, the first universal wheel 1 is arranged at the lower end of the third screw rod 33, and the second universal wheel 1 is arranged at the lower end of the fourth third screw rod 33; the lower ends of the adjacent upright posts 6 are connected through a first horizontal cross bar 81, and the upper ends of the adjacent upright posts 6 are connected through a second horizontal cross bar 82; the lower end of the bracket beam 10 is fixed on a second horizontal cross rod 82 between a first vertical rod and a second vertical rod, the lower end of the first screw rod 31 is inserted into and sleeved on the upper end of a third upright post 6, the lower end of the second screw rod 32 is inserted into and sleeved on the upper end of a fourth upright post 6, the upper end of the third upright post 6 is provided with a second adjusting screw nut 42 matched with the first screw rod 31, and the upper end of the fourth upright post 6 is provided with a third adjusting screw nut matched with the second screw rod 32.
The screw jack 9 is fixed on the second horizontal cross bar 82 between the first upright post 6 and the second upright post 6; inclined rods 7 are arranged between the first upright post 6 and the second upright post 6 and between the third upright post 6 and the fourth upright post 6; the middle part of the second upright post 6 is connected with the middle part of the third upright post 6, and the middle part of the first upright post 6 is connected with the middle part of the fourth upright post 6 through a third horizontal cross bar 83.
The utility model discloses a concrete working process does:
the 400t jack is clamped on the bracket beam 10, the screw jack 9 is adopted to limit the jack to slide down the tensioning equipment when the jack runs, potential safety hazards are eliminated, the bracket is moved to a tensioning position, and the extending lengths of the first screw rod 31, the second screw rod 32 and the third screw rod 33 are adjusted according to the clearance in the beam body box.
The utility model discloses can realize the free walking of moving die carrier device at the continuous beam inner box, through the height of adjusting each third lead screw 33, adjust tensioning equipment's height to tooth piece stretch-draw on the different case roof beams of adaptation, screw jack 9 not only can vertically be spacing, can be when installation tensioning equipment moreover, in the top pushes away tensioning jack and gets into its corresponding draw-in groove to the limiting plate, tooth piece stretch-draw is accomplished to quality and quality assurance, the utility model discloses can be applicable to the strutting arrangement of tooth piece on the continuous beam that the bridge incasement stretch-draw headroom is not enough.
Claims (5)
1. A supporting device for tensioning a tooth block of a cast-in-place box beam of an intercity railway is characterized by comprising a first screw rod (31), a second screw rod (32), a bracket, a connecting rod (5) and a plurality of bracket beams (10);
the lower extreme of first lead screw (31) and the lower extreme of second lead screw (32) all insert in the top of support, the bottom of support is provided with directional wheel (2) and universal wheel (1), the top of first lead screw (31) is connected through connecting rod (5) with the top of second lead screw (32), the upper end of each bracket roof beam (10) is connected on connecting rod (5), the lower extreme of each bracket roof beam (10) is located the top of support, the top of support is provided with screw jack (9), each bracket roof beam (10) is located the both sides of screw jack (9).
2. The support device for tensioning the tooth block of the cast-in-place box girder of the intercity railway according to claim 1, it is characterized in that the bracket comprises four upright posts (6) and four third screw rods (33), wherein, one upright post (6) corresponds to one third screw rod (33), the upper end of each third screw rod (33) is inserted into and sleeved in the lower end of the upright post (6), the lower end of the upright post (6) is provided with a first adjusting screw nut (41) matched with the third screw rod (33), the number of the directional wheels (2) is two, the number of the universal wheels (1) is two, the first two fixed wheels are arranged at the lower end of a first third screw rod (33), the second two fixed wheels (2) are arranged at the lower end of a second third screw rod (33), the first universal wheel (1) is arranged at the lower end of a third screw rod (33), and the second universal wheel (1) is arranged at the lower end of a fourth third screw rod (33);
the lower ends of the adjacent upright posts (6) are connected through a first horizontal cross bar (81), and the upper ends of the adjacent upright posts (6) are connected through a second horizontal cross bar (82);
the lower extreme of bracket roof beam (10) is fixed in on second horizontal pole (82) between first montant and the second montant, the lower extreme of first lead screw (31) inserts and cup joints in the upper end of third stand (6), the lower extreme of second lead screw (32) inserts and cup joints in the upper end of fourth stand (6), the upper end of third stand (6) is provided with and adjusts silk mouthful nut (42) with first lead screw (31) matched with second, the upper end of fourth stand (6) is provided with and adjusts silk mouthful nut with second lead screw (32) matched with third.
3. A support device for tensioning a tooth block of a cast-in-place box beam of an intercity railway according to claim 2, characterized in that a screw jack (9) is fixed on the second horizontal cross bar (82) between the first upright post (6) and the second upright post (6).
4. The supporting device for tensioning the tooth block of the intercity railway cast-in-place box girder according to claim 2, wherein inclined rods (7) are arranged between the first upright post (6) and the second upright post (6) and between the third upright post (6) and the fourth upright post (6).
5. The supporting device for tensioning the tooth block of the intercity railway cast-in-place box girder according to claim 3, wherein the middle part of the second upright post (6) is connected with the middle part of the third upright post (6), and the middle part of the first upright post (6) is connected with the middle part of the fourth upright post (6) through a third horizontal cross rod (83).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021613357.4U CN213061731U (en) | 2020-08-05 | 2020-08-05 | Support device for tensioning tooth block of cast-in-situ box girder of inter-city railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021613357.4U CN213061731U (en) | 2020-08-05 | 2020-08-05 | Support device for tensioning tooth block of cast-in-situ box girder of inter-city railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213061731U true CN213061731U (en) | 2021-04-27 |
Family
ID=75580324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021613357.4U Active CN213061731U (en) | 2020-08-05 | 2020-08-05 | Support device for tensioning tooth block of cast-in-situ box girder of inter-city railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213061731U (en) |
-
2020
- 2020-08-05 CN CN202021613357.4U patent/CN213061731U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103452052B (en) | Movable mold hanging equipment for closing swivel bridges and closure section construction method | |
| CN110722318A (en) | Precise adjustable steel truss assembling jig frame and assembling method | |
| CN113152166B (en) | Straddle type monorail track beam sliding erection tool | |
| CN112095476B (en) | Superposition construction device for I-shaped steel-concrete composite beam concrete | |
| CN213061731U (en) | Support device for tensioning tooth block of cast-in-situ box girder of inter-city railway | |
| CN211947993U (en) | Support for large-span cast-in-situ bridge construction | |
| CN212835011U (en) | Supporting structure for transporting beam to pass station | |
| CN108316156B (en) | Movable formwork and construction method thereof | |
| CN201330365Y (en) | Bench formwork trolley for construction of two-course pavement structure in tunnel | |
| CN216068013U (en) | Positioning support steel frame of tensioning and bundling machine | |
| CN214871544U (en) | Device for preventing end part from stretching and cracking for precast beam | |
| CN212867563U (en) | Tunnel super-large section two-lining trolley capable of being widened for multiple times | |
| CN210217757U (en) | Overlength lining cutting platform truck | |
| CN211472188U (en) | Tool for assembling medium-low speed magnetic floating track beam | |
| CN210975555U (en) | Construction work platform | |
| CN217174385U (en) | Longitudinal prestress tensioning frame after die change of whole-hole prefabricated box girder of highway | |
| CN113186840A (en) | Combined bracket-based high pier zero-number block counter-force pre-pressing method | |
| CN213143119U (en) | Gantry type movable formwork structure for construction of road retaining wall | |
| CN216040737U (en) | Variable width hanging basket | |
| CN217678646U (en) | Tie rod arch bridge middle beam installation device | |
| CN220336420U (en) | Adjustable supporting device for building outer elevation frame body | |
| CN212077655U (en) | High-speed railway highway gate-type bridging machine | |
| CN210049114U (en) | Capping beam prestress tensioning trolley capable of moving longitudinally and transversely | |
| CN215801072U (en) | Trackless walking hanging basket | |
| CN219080340U (en) | Integral lining rack for deep foundation pit wall construction and large template connecting structure thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |