CN211074042U - Prefabricated case roof beam centre form fixing device - Google Patents
Prefabricated case roof beam centre form fixing device Download PDFInfo
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- CN211074042U CN211074042U CN201921566550.4U CN201921566550U CN211074042U CN 211074042 U CN211074042 U CN 211074042U CN 201921566550 U CN201921566550 U CN 201921566550U CN 211074042 U CN211074042 U CN 211074042U
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Abstract
The utility model discloses a prefabricated box girder internal mold fixing device, which comprises an upper internal mold pressing mechanism and a lower external mold pressing mechanism, wherein the upper internal mold pressing mechanism comprises a first pull rod, a first sleeve is sleeved outside the first pull rod, the upper end part of the first pull rod is connected with a first supporting arm and a second supporting arm through a first shaft pin, and the upper end part of the first sleeve is connected with a third supporting arm and a fourth supporting arm through a second shaft pin; the lower end of the first pull rod is connected with a first stop block, and the lower end of the first sleeve is connected with a first flange ring; the lower outer mold jacking mechanism comprises a first jacking supporting plate, a first nut and a second nut are respectively connected to the left part and the right part of the first jacking supporting plate, a first screw rod is spirally connected in the first nut, and a second screw rod is spirally connected in the second nut; a first slotted hole is formed in the middle of the first jacking and supporting plate, and the fixing device can better position the inner template.
Description
Technical Field
The utility model relates to a construction technical field, concretely relates to prefabricated case roof beam centre form fixing device.
Background
The precast box girder is in the pouring process, and needs to be fixed in order to ensure that the position of the inner mold is not influenced by the poured concrete. The existing fixing mode is that a steel bar is welded in the middle of the upper portion of a box girder across an I-shaped steel, the lower end of the steel bar is connected with an inner mold, and two ends of the I-shaped steel are pulled on two sides of an outer mold through steel wire ropes so as to fix and compress the inner mold, thereby achieving the purpose of fixing. However, a series of operations such as external mold fixing, concrete pouring, manual operation and the like are required to be carried out on the upper edge surface of the prefabricated box girder, and if the internal mold is fixed, the originally complex upper surface is more crowded; and the section steel for fixing the inner die is required to be disassembled shortly after pouring, the tension force originally applied to the outer die with poor rigidity is removed, so that the outer die generates a certain amount of deformation, and the deformation of the outer die can influence the surface quality of the box girder, such as die sticking and the like, because the concrete is not completely solidified, so that a new method for fixing the inner die needs to be researched.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prefabricated case roof beam centre form fixing device, the location inner formword that this fixing device can be better.
The utility model discloses a realize above-mentioned purpose, the technical solution who adopts is:
a prefabricated box girder internal mold fixing device comprises an upper internal mold pressing mechanism and a lower external mold pressing mechanism, wherein the upper internal mold pressing mechanism comprises a first pull rod, a first sleeve is sleeved outside the first pull rod, the upper end of the first pull rod is connected with a first supporting arm and a second supporting arm through a first shaft pin, the upper end of the first sleeve is connected with a third supporting arm and a fourth supporting arm through a second shaft pin, the first supporting arm is rotatably connected with the third supporting arm, and the second supporting arm is rotatably connected with the fourth supporting arm; the lower end of the first pull rod is connected with a first stop block, and the lower end of the first sleeve is connected with a first flange ring;
the lower outer mold jacking mechanism comprises a first jacking supporting plate, a first nut and a second nut are respectively connected to the left part and the right part of the first jacking supporting plate, a first screw rod is spirally connected in the first nut, and a second screw rod is spirally connected in the second nut; a first slotted hole is formed in the middle of the first jacking and supporting plate, and the first stop block can penetrate through the first slotted hole and can be clamped to the lower end of the first jacking and supporting plate.
Preferably, the first support arm and the second support arm are both in a slotted plate shape, and the inner end part of the first support arm is in a narrow-mouth shape;
the first pivot pin can pass through the upper part of the first pull rod, and the inner end part of the first support arm is connected to the first pivot pin on two sides of the first pull rod; the inner end part of the second supporting arm is connected with the first shaft pin on the outer side of the first supporting arm, and the inner end part of the second supporting arm can be clamped on the outer side of the inner end part of the first supporting arm.
Preferably, the first jacking and supporting plate comprises a first middle circular plate, and two sides of the first middle circular plate are respectively connected with a first left side plate and a second right side plate;
the first slotted hole is located in the middle of the first middle circular plate, the first left side plate is provided with a first threaded hole, the second right side plate is provided with a second threaded hole, the first screw rod can pass through the first threaded hole and the first nut, and the second screw rod can pass through the second threaded hole and the second nut.
Preferably, the first pull rod comprises a first upper connecting rod and a first lower connecting rod, the first upper connecting rod is in a rectangular rod shape, and the first lower connecting rod is in a round rod shape; the first block is rectangular block-shaped, and the first slot hole is rectangular hole-shaped.
Preferably, the first sleeve is in a round tube shape, and the second shaft pin penetrates through the first sleeve; the first flange ring is in a circular ring shape, and the first flange ring is sleeved on the lower portion of the first sleeve and welded with the first sleeve.
Preferably, the third support arm and the fourth support arm are both in the shape of a slotted plate, two first extension plates are arranged at the outer end part of the third support arm, and the outer end part of the first support arm is connected with the two first extension plates through a third shaft pin; and two second extension plates are arranged at the outer end part of the fourth supporting arm, and the outer end part of the second supporting arm is connected with the two second extension plates through a fourth shaft pin.
Preferably, a first arc-shaped notch is formed in the inner end part of the third support arm, the inner end part of the third support arm is connected to a second shaft pin outside the first sleeve, and the upper end part of the first sleeve can be clamped into the first arc-shaped notch;
the inner end part of the fourth supporting arm is provided with a second arc-shaped notch, the inner end part of the fourth supporting arm is connected to a second shaft pin outside the third supporting arm, and the upper end part of the first sleeve can be clamped into the second arc-shaped notch.
Preferably, the length of the first slot is greater than the length of the first stopper, the length of the first stopper is greater than the width of the first slot, and the width of the first slot is greater than the width of the first stopper.
The utility model has the advantages that:
the prefabricated box girder internal mold fixing device is provided with an upper internal mold pressing mechanism and a lower external mold pressing mechanism which are used for positioning the internal mold plate and the external mold plate, and the upper internal mold pressing mechanism and the lower external mold pressing mechanism can realize positioning and pull-down of the internal mold plate through the external mold plate. After last centre form hold-down mechanism connects on interior masterplate, third support arm and fourth support arm press at the interior template, and the partial power that receives on third support arm and the fourth support arm transmits for first pull rod through first support arm and second support arm, and simultaneously under the pressure of first support arm and second support arm, third support arm and fourth support arm have compressed tightly first sleeve, have improved holistic stability.
The utility model provides a tight mechanism in lower external mold top can fix a position last centre form hold-down mechanism, through setting up first dog and first slotted hole, has improved convenience and the practicality of use, and the dismantlement installation is simple. The utility model provides a prefabricated case roof beam centre form fixing device can take-up the location to the inner formword, when pouring the concrete mortar between inner formword and the exterior sheathing, through the utility model provides an inner formword fixing device prevents that the inner formword from floating the removal, and this fixing device can not only better location inner formword, and holistic structure is simple and novel more moreover. And go up centre form hold-down mechanism and the tight mechanism in outer mould top repeatedly usable down, when last centre form hold-down mechanism and the tight mechanism in outer mould top wherein part takes place to damage down, can in time change some parts, avoid changing on the whole, reduced holistic maintenance cost, the practicality has obtained great improvement.
Drawings
In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of a prefabricated box girder inner mold fixing device.
Fig. 2 is an isometric view of the whole structure of the prefabricated box girder inner die fixing device.
Fig. 3 is a schematic view of the overall structure of the upper inner die pressing mechanism.
Fig. 4 is a schematic view of the overall structure of the lower outer die jacking mechanism.
Fig. 5 is a schematic view of the connection structure of the inner formwork, the outer formwork and the prefabricated box girder inner formwork fixing device.
Fig. 6 is a schematic view of a connection structure of the inner and outer formworks.
Detailed Description
The utility model provides a prefabricated case roof beam centre form fixing device, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, it is following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The present invention will be described in detail with reference to the accompanying drawings:
example 1:
with reference to fig. 1 to 6, a prefabricated box girder internal mold fixing device includes an upper internal mold pressing mechanism and a lower external mold pressing mechanism, the upper internal mold pressing mechanism includes a first pull rod 1, the first pull rod 1 is externally sleeved with a first sleeve 2, and the upper end of the first pull rod 1 is connected with a first support arm 12 and a second support arm 13 through a first shaft pin 11.
The upper end of the first sleeve 2 is connected with a third supporting arm 22 and a fourth supporting arm 23 through a second shaft pin 21, the first supporting arm 12 is rotatably connected with the third supporting arm 22, and the second supporting arm 13 is rotatably connected with the fourth supporting arm 23.
The lower end of the first pull rod 1 is connected with a first stop block 14, and the lower end of the first sleeve 2 is connected with a first flange ring 24.
The lower outer mold jacking mechanism comprises a first jacking support plate 3, a first nut 4 and a second nut 5 are respectively connected to the left part and the right part of the first jacking support plate 3, a first screw rod 41 is spirally connected to the inner part of the first nut 4, and a second screw rod 51 is spirally connected to the inner part of the second nut 5.
The middle part of the first supporting plate 3 is provided with a first slot 31, and the first stopper 14 can pass through the first slot 31 and can be clamped to the lower end of the first supporting plate 3.
The first support arm 12 and the second support arm 13 are both in the form of a slotted plate, and the inner end of the first support arm 12 is in the form of a narrow opening, that is, the inner end of the first support arm 12 is narrower relative to the outer end and the middle of the first support arm 12, and is in the form of a narrow opening.
The first shaft pin 11 can pass through the upper part of the first pull rod 1, and after the first shaft pin 11 passes through the upper part of the first pull rod 1, the inner end part of the first support arm 12 is connected to the first shaft pin 11 at two sides of the first pull rod 1.
The inner end part of the second supporting arm 13 is connected with the first shaft pin 11 at the outer side of the first supporting arm 12, and the inner end part of the second supporting arm 13 can be clamped at the outer side of the inner end part of the first supporting arm 12.
The first top support plate 3 comprises a first middle circular plate 32, and a first left side plate 33 and a second right side plate 34 are respectively connected to two sides of the first middle circular plate 32.
The first slot 31 is located in the middle of the first middle circular plate 32, the first left circular plate 33 has a first threaded hole 331, the second right circular plate 34 has a second threaded hole 341, the first screw 41 can pass through the first threaded hole 331 and the first nut 4, and the second screw 51 can pass through the second threaded hole 341 and the second nut 5.
The first pull rod 1 comprises a first upper connecting rod 101 and a first lower connecting rod 102, wherein the first upper connecting rod 101 is in a rectangular rod shape, and the first lower connecting rod 102 is in a round rod shape; the first stopper 14 has a rectangular block shape, and the first slot 31 has a rectangular hole shape.
The first sleeve 2 is in a circular tube shape, and the second shaft pin 21 penetrates through the first sleeve 2; the first flange ring 24 is annular, and the first flange ring 24 is fitted over the lower portion of the first sleeve 2 and welded to the first sleeve 2.
The third support arm 22 and the fourth support arm 23 are both in the shape of a slotted plate, two first extension plates 221 are arranged on the outer end portion of the third support arm 22, and the outer end portion of the first support arm 12 is connected with the two first extension plates 221 through a third shaft pin 222.
Two second extension plates 231 are disposed on outer ends of the fourth support arms 23, and the outer ends of the second support arms 13 are connected to the two second extension plates 231 by fourth shaft pins 232.
The inner end part of the third supporting arm 22 is provided with a first arc-shaped notch 223, the inner end part of the third supporting arm 22 is connected to the second shaft pin 21 outside the first sleeve 2, and the upper end part of the first sleeve 2 can be clamped into the first arc-shaped notch 223.
A second arc-shaped notch is formed in the inner end part of the fourth supporting arm 23, the inner end part of the fourth supporting arm 23 is connected to the second shaft pin 21 outside the third supporting arm 22, and the upper end part of the first sleeve 2 can be clamped into the second arc-shaped notch.
The length of the first slot 31 is greater than the length of the first stopper 14, the length of the first stopper 14 is greater than the width of the first slot 31, and the width of the first slot 31 is greater than the width of the first stopper 14.
Example 2:
the application method of the fixing device adopts the prefabricated box girder internal mold fixing device, and specifically comprises the following steps:
step one, an inner template 6 and an outer template 7 of the prefabricated box girder are installed in place, and the front end and the rear end of the inner template 6 are fixed through a template positioning frame. The bottom end surface of the inner template 6 is provided with a first inner template prefabricated hole 61, and the bottom end surface of the outer template 7 is provided with a first outer template prefabricated hole 71.
Step two, the first sleeve 2 is pulled down, so that the first supporting arm 12 and the second supporting arm 13 extend downwards, and the third supporting arm 22 and the fourth supporting arm 23 want to extend upwards; the four supporting arms are folded at two sides of the first pull rod 1 after being extended.
And step three, vertically holding the first sleeve 2 and the first pull rod 1, and enabling the first flange ring 24 connected to the lower end 2 of the first sleeve to be attached to the bottom of the outer template 7 after the four supporting arms sequentially penetrate through the first outer mold prefabricated hole 71 and the first inner mold prefabricated hole 61.
Step four: the first sleeve 2 is pressed, the first pull rod 1 is pulled downwards until the first pull rod is not pulled, the lower end faces of the third support arm 22 and the fourth support arm 23 are connected with the inner end face of the bottom of the inner template 6, then the first jacking support plate 3 is sleeved into the lower end of the first pull rod 1, and then the first jacking support plate 3 is rotated by 90 degrees, so that the first stop block 14 is clamped at the lower end of the first jacking support plate 3.
And step five, finally screwing the first screw 41 and the second screw 51 to tighten the first pull rod 1.
In the utility model, a plurality of first inner mold prefabricated holes 61 and a plurality of first outer mold prefabricated holes 71 are provided, a first outer mold prefabricated hole 71 is provided at the lower end of each first inner mold prefabricated hole 61, and the first inner mold prefabricated holes 61 and the first outer mold prefabricated holes 71 have the same aperture; the distance between every two adjacent first internal mold prefabricated holes 61 is 20-30 cm.
Step six, when the internal mold fixing device is disassembled, firstly disassembling the external mold jacking mechanism, then knocking the first sleeve 2 left and right by using a rubber hammer, after the first sleeve 2 is loosened, then pushing up the first pull rod 1 to enable the four supporting arms to be folded on two sides of the first pull rod 1, and at the moment, enabling the four supporting arms to pass through the first internal mold prefabricated hole 61 and the first external mold prefabricated hole 71; the upper inner die pressing mechanism is then taken out vertically from the first inner die pre-fabricated hole 61 and the first outer die pre-fabricated hole 71.
Example 3:
the prefabricated box girder internal mold fixing device is provided with an upper internal mold pressing mechanism and a lower external mold pressing mechanism which are used for positioning the internal mold plate 6 and the external mold plate 7, and the upper internal mold pressing mechanism and the lower external mold pressing mechanism can realize positioning and pull-down of the internal mold plate 6 through the external mold plate 7. After the upper inner die pressing mechanism is connected to the inner die plate, the third supporting arm 22 and the fourth supporting arm 23 are pressed on the inner die plate 6, partial force borne by the third supporting arm 22 and the fourth supporting arm 23 is transmitted to the first pull rod 1 through the first supporting arm 12 and the second supporting arm 13, and meanwhile, under the pressure of the first supporting arm 12 and the second supporting arm 13, the third supporting arm 22 and the fourth supporting arm 23 press the first sleeve 2, so that the overall stability is improved.
The utility model provides a tight mechanism in lower external mold top can fix a position last centre form hold-down mechanism, through setting up first dog 14 and first slotted hole 31, has improved convenience and the practicality of use, and the dismantlement installation is simple. The utility model provides a prefabricated case roof beam centre form fixing device can take-up the location to the inner formword, when pouring concrete mortar between inner formword and the exterior sheathing 7, through the utility model provides an inner formword fixing device prevents that 6 buoyantly of inner formword from removing, and this fixing device can not only be better the location inner formword, and holistic structure is simple and novel more moreover. And go up centre form hold-down mechanism and the tight mechanism in outer mould top repeatedly usable down, when last centre form hold-down mechanism and the tight mechanism in outer mould top wherein part takes place to damage down, can in time change some parts, avoid changing on the whole, reduced holistic maintenance cost, the practicality has obtained great improvement.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (8)
1. A prefabricated box girder internal mold fixing device is characterized by comprising an upper internal mold pressing mechanism and a lower external mold jacking mechanism, wherein the upper internal mold pressing mechanism comprises a first pull rod, a first sleeve is sleeved outside the first pull rod, the upper end part of the first pull rod is connected with a first supporting arm and a second supporting arm through a first shaft pin, the upper end part of the first sleeve is connected with a third supporting arm and a fourth supporting arm through a second shaft pin, the first supporting arm is rotatably connected with the third supporting arm, and the second supporting arm is rotatably connected with the fourth supporting arm; the lower end of the first pull rod is connected with a first stop block, and the lower end of the first sleeve is connected with a first flange ring;
the lower outer mold jacking mechanism comprises a first jacking supporting plate, a first nut and a second nut are respectively connected to the left part and the right part of the first jacking supporting plate, a first screw rod is spirally connected in the first nut, and a second screw rod is spirally connected in the second nut; a first slotted hole is formed in the middle of the first jacking and supporting plate, and the first stop block can penetrate through the first slotted hole and can be clamped to the lower end of the first jacking and supporting plate.
2. The precast box girder inner mold fixing device according to claim 1, wherein the first support arm and the second support arm are both in a shape of a slotted plate, and an inner end portion of the first support arm is in a shape of a narrow opening;
the first pivot pin can pass through the upper part of the first pull rod, and the inner end part of the first support arm is connected to the first pivot pin on two sides of the first pull rod; the inner end part of the second supporting arm is connected with the first shaft pin on the outer side of the first supporting arm, and the inner end part of the second supporting arm can be clamped on the outer side of the inner end part of the first supporting arm.
3. The precast box girder inner mold fixing device according to claim 1, wherein the first jacking and supporting plate comprises a first middle circular plate, and a first left side plate and a second right side plate are respectively connected to two sides of the first middle circular plate;
the first slotted hole is located in the middle of the first middle circular plate, the first left side plate is provided with a first threaded hole, the second right side plate is provided with a second threaded hole, the first screw rod can pass through the first threaded hole and the first nut, and the second screw rod can pass through the second threaded hole and the second nut.
4. The precast box girder inner mold fixing device according to claim 1, wherein the first tie bar comprises a first upper connecting bar and a first lower connecting bar, the first upper connecting bar has a rectangular bar shape, and the first lower connecting bar has a round bar shape; the first block is rectangular block-shaped, and the first slot hole is rectangular hole-shaped.
5. The precast box girder inner mold fixing device according to claim 1, wherein the first sleeve is in a shape of a circular tube, and the second shaft pin penetrates through the first sleeve; the first flange ring is in a circular ring shape, and the first flange ring is sleeved on the lower portion of the first sleeve and welded with the first sleeve.
6. The precast box girder inner mold fixing device according to claim 2, wherein the third support arm and the fourth support arm are both in a shape of a slotted plate, two first extension plates are provided on an outer end portion of the third support arm, and the outer end portion of the first support arm is connected with the two first extension plates through a third shaft pin; and two second extension plates are arranged at the outer end part of the fourth supporting arm, and the outer end part of the second supporting arm is connected with the two second extension plates through a fourth shaft pin.
7. The precast box girder inner mold fixing device is characterized in that a first arc-shaped notch is formed in the inner end part of the third supporting arm, the inner end part of the third supporting arm is connected to a second shaft pin outside the first sleeve, and the upper end part of the first sleeve can be clamped into the first arc-shaped notch;
the inner end part of the fourth supporting arm is provided with a second arc-shaped notch, the inner end part of the fourth supporting arm is connected to a second shaft pin outside the third supporting arm, and the upper end part of the first sleeve can be clamped into the second arc-shaped notch.
8. The precast box girder inner mold fixing device according to claim 3, wherein the length of the first slot hole is greater than that of the first stopper, the length of the first stopper is greater than that of the first slot hole, and the width of the first slot hole is greater than that of the first stopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921566550.4U CN211074042U (en) | 2019-09-19 | 2019-09-19 | Prefabricated case roof beam centre form fixing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921566550.4U CN211074042U (en) | 2019-09-19 | 2019-09-19 | Prefabricated case roof beam centre form fixing device |
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| CN211074042U true CN211074042U (en) | 2020-07-24 |
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| CN201921566550.4U Active CN211074042U (en) | 2019-09-19 | 2019-09-19 | Prefabricated case roof beam centre form fixing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466042A (en) * | 2019-09-19 | 2019-11-19 | 山东高速城投绕城高速公路有限公司 | A kind of fixed device of prefabricated box girder inner formwork and fixed setting method |
-
2019
- 2019-09-19 CN CN201921566550.4U patent/CN211074042U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466042A (en) * | 2019-09-19 | 2019-11-19 | 山东高速城投绕城高速公路有限公司 | A kind of fixed device of prefabricated box girder inner formwork and fixed setting method |
| CN110466042B (en) * | 2019-09-19 | 2024-03-15 | 山东高速城投绕城高速公路有限公司 | Fixing device and fixing installation method for prefabricated box girder inner mold |
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