CN215749906U - Box girder die pedestal adjusting device - Google Patents
Box girder die pedestal adjusting device Download PDFInfo
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- CN215749906U CN215749906U CN202122354831.7U CN202122354831U CN215749906U CN 215749906 U CN215749906 U CN 215749906U CN 202122354831 U CN202122354831 U CN 202122354831U CN 215749906 U CN215749906 U CN 215749906U
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- backing plate
- pedestal
- base
- box girder
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Abstract
The utility model discloses a box girder mould pedestal adjusting device, which belongs to the technical field of concrete prefabricated moulds and comprises a pedestal panel arranged on a concrete base, wherein the concrete base extends out of two sides of the pedestal panel, a panel backing plate is fixedly arranged below the pedestal panel extending out of the concrete base, the upper surface of the panel backing plate abuts against the lower surface of the pedestal panel, a fixed base is fixedly arranged below the panel backing plate, the fixed base and the panel backing plate are arranged at intervals, a compression spring is arranged between the fixed base and the panel backing plate, one end of the compression spring abuts against the fixed base, and the other end of the compression spring abuts against the panel backing plate. The utility model solves the technical problem that the quality and the appearance of the box girder are influenced by stress tension after the box girder is poured at present, and is widely applied to box girder prefabrication.
Description
Technical Field
The utility model belongs to the technical field of concrete prefabricated moulds, and particularly relates to a box girder mould pedestal adjusting device.
Background
The precast reinforced concrete box girder belongs to a single-hole statically determinate structure, has definite stress, simple structure and convenient construction, and is a bridge type which is most widely applied to small and medium-span bridges. The structure size of the prefabricated box girder is easy to design into serialization and standardization, which is beneficial to widely adopting industrialized construction in factories or on land, organizing large-scale prefabricated production, adopting an assembly type construction method and using modern hoisting equipment for installation. Therefore, in recent years, most of bridges with medium and small spans adopt fabricated precast box girders at home and abroad.
The general box girder pouring pedestal is of an integral type, and the pedestal is integrally fixed in height and cannot deform no matter in a fixed concrete structure or a movable steel structure during production, so that the quality of the box girder is guaranteed.
In the actual production process, when concrete is not solidified after a general box girder is poured, as shown in fig. 1, the bottom of the pedestal 1 is well attached to the concrete base with a small gap, but when the concrete base is solidified and loses plasticity, the box girder 2 is tensioned (anchored) to arch the box girder 2. As shown in fig. 2, since the support of the box girder 2 on the pedestal 1 after arching is concentrated on both ends of the box girder 2, stress is concentrated on both ends of the box girder 2, and the strength of the concrete of the box girder 2 is weak at this time, bottom portions of both ends of the box girder 2 are broken, which affects the quality and appearance of the box girder 2.
Therefore, in the technical field of concrete prefabricated moulds, research and improvement needs still exist for the box girder mould pedestal adjusting device, which is a research hotspot and focus in the technical field of concrete prefabricated moulds at present and is the starting point of the utility model.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the utility model is as follows: the utility model provides a box girder mould pedestal adjusting device to solve present box girder pouring back, because of stress stretch-draw influences the quality and the technical problem of outward appearance of box girder.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a case roof beam mould pedestal adjusting device, is including installing the pedestal panel on the concrete base, pedestal panel both sides all extend the concrete base extends the pedestal panel below fixed mounting of concrete base has the panel backing plate, the upper surface of panel backing plate with the lower surface of pedestal panel offsets and leans on, the below fixed mounting of panel backing plate has unable adjustment base, unable adjustment base with the panel backing plate interval sets up, unable adjustment base with be equipped with compression spring between the panel backing plate, compression spring one end top lean on in unable adjustment base is last, the other end top lean on in on the panel backing plate.
As an improvement, the compression spring is sleeved on a screw rod, one end of the screw rod is fixed on the panel base plate, and the other end of the screw rod extends out of the fixed base.
As a further improvement, one end of the screw rod, which extends out of the fixed base, is provided with a locking nut.
As a further improvement, a limiting rod used for limiting the maximum deformation distance of the panel base plate is arranged between the fixed base and the panel base plate.
As a further improvement, one end of the limiting rod is fixed on the fixed base, and the other end of the limiting rod extends to the panel base plate.
After the technical scheme is adopted, the utility model has the beneficial effects that:
(1) according to the embodiment of the utility model, the two sides of the concrete base are changed into the adjustable structures of the pedestal panels, and the pedestal panels are supported by the compression springs at the lower parts and always have supporting force on the box girder, so that the two ends of the box girder cannot be broken, and the quality and the appearance of the box girder are ensured.
(2) Because the limiting rod is arranged between the fixed base and the panel base plate, the sinking size of the pedestal panels on the two sides is ensured within the design range.
Drawings
In order to more 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. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope covered by the contents disclosed in the present invention.
FIG. 1 is a force diagram of the pedestal and concrete base when the concrete is not consolidated after the box girder is poured;
FIG. 2 is a force diagram of the pedestal and the concrete base when the concrete is solidified after the box girder is poured;
FIG. 3 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1. pedestal, 2, case roof beam, 3, concrete foundation, 4, pedestal panel, 5, panel backing plate, 6, unable adjustment base, 7, compression spring, 8, screw rod, 9, lock nut, 10, gag lever post.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present specification, the terms "front", "rear", "left", "right", "inner", "outer" and "middle" are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship between the terms and the corresponding parts are also regarded as the scope of the present invention without substantial changes in the technical contents.
As shown in fig. 3, a box girder mold pedestal adjusting device, including installing pedestal panel 4 on concrete base 3, concrete base 3 all extends to pedestal panel 4 both sides, the pedestal panel 4 below fixed mounting who extends concrete base 3 has panel backing plate 5, the upper surface of panel backing plate 5 offsets with the lower surface of pedestal panel 4 and leans on, the below fixed mounting of panel backing plate 5 has unable adjustment base 6, unable adjustment base 6 sets up with panel backing plate 5 interval, be equipped with compression spring 7 between unable adjustment base 6 and the panel backing plate 5, compression spring 7 one end is leaned on unable adjustment base 6, the other end is leaned on panel backing plate 5, technical personnel in the art can arrange the quantity of compression spring 7 according to the breadth size of pedestal panel 4 who stretches out concrete base 3, accomplish rationally distributed, here no longer give unnecessary details.
Compression spring 7 suit is on screw rod 8, and screw rod 8 one end is fixed in on panel backing plate 5 through welding or other technical means, and the other end passes the through-hole on unable adjustment base 6 and stretches out unable adjustment base 6, and lock nut 9 is installed to the one end that screw rod 8 stretches out unable adjustment base 6.
A limiting rod 10 used for limiting the maximum deformation distance of the panel backing plate 5 is arranged between the fixed base 6 and the panel backing plate 5. Specifically, one end of the limiting rod 10 is fixed on the fixed base 6, the other end extends to the panel backing plate 5, and the distance between the end of the limiting rod 10 extending to the panel backing plate 5 and the panel backing plate 5 is the maximum deformation distance.
Before using, adjusting lock nut 9 on the screw rod 8 earlier for whole pedestal panel 4 parallel and level, compression spring 7 is the compression state this moment, gives panel backing plate 5 and pedestal panel 4 holding power, ensures that pedestal panel 4 can not warp when the case roof beam is poured.
The pouring back begins concrete concretion, when the case roof beam receives stretch-draw, because the case roof beam arch camber, the weight of case roof beam can be concentrated on the case roof beam both ends, 4 both sides face atress of pedestal panel can increase, at this moment because 4 atresss of both sides pedestal panel exceed compression spring 7's holding power, pedestal panel 4 and panel backing plate 5 can be the atress together and remove and sink, pedestal panel 4 of guaranteeing the pedestal both sides like this is all supporting the case roof beam, the lifting surface area of case roof beam strong point has been guaranteed, reduce the pressure at case roof beam both ends, guarantee that the case roof beam both ends can not break.
In conclusion, the pedestal panel 4 adjustable structure is changed at two sides of the concrete base 3, and the pedestal panel 4 is supported by the compression spring 7 at the lower part and always has supporting force on the box girder, so that two ends of the box girder cannot be broken, and the quality and the appearance of the box girder are ensured.
Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (5)
1. The utility model provides a case roof beam mould pedestal adjusting device, is including installing the pedestal panel on the concrete base, its characterized in that, pedestal panel both sides all extend the concrete base extends the pedestal panel below fixed mounting of concrete base has the panel backing plate, the upper surface of panel backing plate with the lower surface of pedestal panel offsets and leans on, the below fixed mounting of panel backing plate has unable adjustment base, unable adjustment base with panel backing plate interval sets up, unable adjustment base with be equipped with compression spring between the panel backing plate, compression spring one end top lean on unable adjustment base is last, the other end top lean on the panel backing plate.
2. The box beam mold pedestal adjusting device according to claim 1, wherein the compression spring is sleeved on a screw, one end of the screw is fixed on the panel backing plate, and the other end of the screw extends out of the fixed base.
3. The box girder mold pedestal adjusting apparatus according to claim 2, wherein a lock nut is installed at an end of the screw rod protruding from the fixing base.
4. The box girder mold pedestal adjusting apparatus according to claim 1, 2 or 3, wherein a stopper rod for limiting a maximum deformation distance of the panel mat is provided between the fixing base and the panel mat.
5. The box beam mold pedestal adjusting apparatus according to claim 4, wherein one end of the limiting rod is fixed to the fixing base, and the other end thereof extends toward the panel mat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122354831.7U CN215749906U (en) | 2021-09-27 | 2021-09-27 | Box girder die pedestal adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122354831.7U CN215749906U (en) | 2021-09-27 | 2021-09-27 | Box girder die pedestal adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215749906U true CN215749906U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122354831.7U Active CN215749906U (en) | 2021-09-27 | 2021-09-27 | Box girder die pedestal adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215749906U (en) |
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2021
- 2021-09-27 CN CN202122354831.7U patent/CN215749906U/en active Active
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