CN220888753U - Steel support axial force meter fixing device - Google Patents
Steel support axial force meter fixing device Download PDFInfo
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- CN220888753U CN220888753U CN202322366408.8U CN202322366408U CN220888753U CN 220888753 U CN220888753 U CN 220888753U CN 202322366408 U CN202322366408 U CN 202322366408U CN 220888753 U CN220888753 U CN 220888753U
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- axial force
- force meter
- hole
- steel
- forced centering
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 85
- 239000010959 steel Substances 0.000 title claims abstract description 85
- 230000009471 action Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
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Abstract
The utility model provides a steel support axial force meter fixing device, which is characterized in that an axial force meter is arranged between a steel pipe end and a section steel enclosing purlin, an end plate is arranged at the end face of the steel pipe end opposite to the axial force meter side, a forced centering disc and a bearing plate are respectively connected at two ends of the axial force meter, and a first limit hole and a second limit hole matched with the axial force meter are respectively arranged in the end faces of the forced centering disc and the bearing plate; the forced centering disc is opposite to the end plate and the diameter of the end part of the attaching side is larger than the diameter of the axial force meter, the forced centering disc is connected with the end plate through a connecting piece, and the bearing plate is opposite to the section steel purlin and the diameter of the end part of the attaching side is larger than the diameter of the axial force meter. The utility model can correspondingly enlarge the contact area of the axial force meter under the action of the large diameter end of the forced centering disc and the bearing plate, thereby better contacting with the end plate of the steel pipe end and the steel enclosing purlin or the steel plate embedded on the enclosing structure, and effectively avoiding the deformation of the steel plate at the contact position of the axial force meter after the axial prestress is applied.
Description
Technical Field
The utility model relates to the technical field of steel support for foundation pit excavation, in particular to a fixing device for a steel support axial force meter.
Background
The steel support is widely applied to building enclosures of projects such as subways, foundation pits and the like; according to the size and the excavation depth of the foundation pit, the steel support is applied with different prestressing force, a jack is generally adopted for prestressing force application, meanwhile, in order to ensure the effectiveness of the steel support and timely feed back the deformation condition of the foundation pit, an axial force meter is required to be arranged at one end of the steel support, the change condition of the axial force of the steel support in the construction period is monitored, so that constructors can be reminded of the deformation condition of the foundation pit and the axial force of the steel support can be timely added again.
In general, steel supports are steel pipes with diameters of 609mm or 800mm, the end parts are plugged by steel plates, however, the diameter of a general axial force meter is about 100mm, one end of the axial force meter is fixed on the steel plate at the end part of the steel pipe, and the other end of the axial force meter is supported on a steel plate of a profile steel enclosing purlin or embedded and fixed on an enclosing structure (underground continuous wall or bored pile and the like). Because the axial force meter diameter is smaller, the contact area with the steel plate at the end part of the rod, the steel purlin or the steel plate embedded on the enclosure structure is small, after the axial prestress is applied to the steel support, the axial force meter generates larger pressure on the steel plate at the end part of the steel tube, the steel purlin or the steel plate embedded on the enclosure structure, the deformation of the steel plate or the steel purlin is easy to cause prestress loss, or the prestress can not reach the design value, and the supporting effect of the steel support is reduced. In addition, the conventional axial force meter cannot be quickly and effectively positioned in the installation process, so that the axial force meter and the steel pipe have installation deviation, the measurement accuracy of the axial force meter is affected, and the fact that larger eccentricity is easy to generate danger in the axial pre-stressing process is required to be explained.
Disclosure of utility model
The utility model aims to provide an axial force meter fixing device which solves the problems that the contact area between an axial force meter and a steel support end plate and the contact area between the axial force meter and a section steel enclosing purlin are small and the axial force meter is easy to install eccentrically.
For this purpose, the utility model adopts the following technical scheme:
The steel support axial force meter fixing device is characterized in that an axial force meter is arranged between a steel pipe end and a section steel enclosing purlin, an end plate is arranged on the side end face of the steel pipe end opposite to the axial force meter, a forced centering disc and a bearing plate are respectively connected to two ends of the axial force meter, and a first limiting hole and a second limiting hole which are matched with the axial force meter are respectively arranged in the end faces of the forced centering disc and the bearing plate; the forced centering disc is opposite to the end plate, the diameter of the end part of the attaching side is larger than the diameter of the axial force meter, the forced centering disc is connected with the end plate through a connecting piece, and the bearing plate is opposite to the section steel purlin and the diameter of the end part of the attaching side is larger than the diameter of the axial force meter; the central axis of the first limiting hole is arranged in the axial direction of the steel pipe end by taking the axis of the steel pipe end as a reference.
Further: the diameter of the forced centering disc and/or the bearing plate relative to the axial force meter side end is smaller than the diameter of the forced centering disc and/or the bearing plate away from the axial force meter side end.
Further: and a limiting structure is connected between the end part of the axial force meter and the first limiting hole and the second limiting hole.
Further: the limiting structure comprises a first locating pin protruding from the end wall of the first limiting hole, a first end hole is formed in the end face of the opposite forced centering disc side of the axial force meter, and the first locating pin is matched with the first end hole.
Further: the first locating pin is externally provided with threads, and is connected with the first end hole through a thread pair.
Further: the limiting structure comprises a second locating pin protruding from the end wall of the second limiting hole, a second end hole is formed in the end face of the axial force meter opposite to the bearing plate side, and the second locating pin is matched with the second end hole.
Further: the second locating pin is externally provided with threads, and is connected with the second end hole through a thread pair.
Further: a spacing area is arranged between the forced centering disc and the bearing plate, and the axial force meter is provided with a data acquisition line extending to the outside in the spacing area.
Further: the end part of the forced centering disc, which is opposite to the end plate, is internally provided with a first through hole, a second through hole communicated with the first through hole is internally provided with the end plate, and the connecting piece penetrates through the first through hole and the second through hole to connect the forced centering disc with the end plate.
Compared with the prior art, the utility model has the following beneficial effects:
The utility model can correspondingly enlarge the contact area of the axial force gauge under the action of the large diameter end of the forced centering disc and the bearing plate, thereby better contacting with the end plate of the steel pipe end and the steel enclosing purlin or the steel plate embedded on the enclosing structure, effectively solving the problem that the direct contact area of the axial force gauge is smaller, and effectively avoiding the deformation of the steel plate at the contact position of the axial force gauge after the axial prestress is applied. Meanwhile, the axial direction of the axial force meter axis is consistent with the axial direction of the end head of the steel pipe through the forced centering disc, so that the eccentric installation of the axial force meter is avoided.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic structural view of the axial force meter of the present utility model;
FIG. 3 is a schematic view of the structure of the forced centering disc of the present utility model;
FIG. 4 is a schematic view of a carrier plate according to the present utility model;
fig. 5 is a schematic view of the structure of the steel pipe end of the steel support of the present utility model.
The marks in the drawings are: 1-the end of a steel pipe; 2-end plates; 3-forced centering plate; 4-a first limiting hole; 5-a first through hole; 6-a first locating pin; 7-an axial force meter; 8-a first end hole; 9-a second tip hole; 10-a carrier plate; 11-a second locating pin; 12-a second limiting hole; 13-section steel encloses purlin; 14-connecting piece; 15-a data acquisition line; 16-a second through hole.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.
As shown in fig. 1-5, a steel support axial force meter fixing device is provided, an axial force meter 7 is arranged between a steel pipe end head 1 and a steel section enclosing purlin 13, an end plate 2 is arranged on the side end face of the steel pipe end head 1 opposite to the axial force meter 7, two ends of the axial force meter 7 are respectively connected with a forced centering disc 3 and a bearing plate 10, and a first limiting hole 4 and a second limiting hole 12 matched with the axial force meter 7 are respectively arranged in the end faces of the forced centering disc 3 and the bearing plate 10; the end diameter of the pasting side of the bearing plate 10 opposite to the steel purlin 13 is larger than the diameter of the axial force meter 7, the bearing plate 10 contacts with the steel purlin 13 through the end part larger than the diameter of the end surface of the axial force meter 7, and the contact area between the original axial force meter 7 and the steel purlin 13 is enlarged, so that the deformation of the contact surface between the end plate 2 and the steel purlin 13 and the axial force meter 7 is avoided; the central axis of the first limiting hole 4 is arranged on the axial direction of the steel pipe end 1 by taking the axis of the steel pipe end 1 as a reference, so that the axial force meter 7 can realize forced centering during installation, and the axial force meter 7 can be rapidly and effectively ensured on the axial direction of the steel pipe end 1 without an additional adjusting mode.
Wherein the diameter of the end of the forced centering disc 3 and the bearing plate 10 on the side opposite to the axial force gauge 7 is smaller than the diameter of the end thereof on the side away from the axial force gauge 7, so that the forced centering disc 3 and the bearing plate 10 form a truncated cone shape with a large diameter at one end and a small diameter at the other end (as shown in fig. 3 and 4).
As shown in fig. 2-4, in particular, a limiting structure is connected between the end of the axial force meter 7 and the first limiting hole 4 and the second limiting hole 12, so that the axial force meter 7 can be better installed and fixed between the forced centering disc 3 and the bearing plate 10. And, the internal diameter of first spacing hole 4 and second spacing hole 12 is slightly greater than the external diameter of axial force meter 7 to ensure that axial force meter 7 just can pack into in the first spacing hole 4 and the second spacing hole 12.
The limiting structure comprises a first locating pin 6 protruding from the end wall of the first limiting hole 4, a first end hole 8 is formed in the end face of the side of the central disc 3 opposite to the forced centering disc 7, and the first locating pin 6 is matched with the first end hole 8. The shaft force gauge 7 extending into the first limiting hole 4 is limited in the external direction and the internal direction through the inner wall of the first limiting hole 4 and the first positioning pin 6 in the first limiting hole 4, so that the quick connection and positioning of the shaft force gauge 7 are further guaranteed.
At the same time, the first positioning pin 6 is externally provided with threads, and is connected with the first end head hole 8 through a thread pair. So that the forced pair first positioning pin 6 can be screwed after the axial force meter 7 is placed in the forced first limiting hole 4, and the functions and effects of centering and fixing the axial force meter 7 are further played and enhanced.
The connection and fixation modes of the axial force meter 7 and the bearing plate 10 are the same as those described above, and the second locating pin 11 is arranged on the end wall of the second limiting hole 12 in a protruding mode, the second end hole 9 is formed in the end face of the axial force meter 7 opposite to the side of the bearing plate 10, and the second locating pin 11 is matched with the second end hole 9. Meanwhile, threads are arranged outside the second positioning pin 11 and are connected with the second end hole 9 through a thread pair.
Specifically, a space region is provided between the forced centering plate 3 and the carrier plate 10, and the axial force gauge 7 is provided with a data acquisition line 15 extending to the outside in the space region. The axial force meter 7 is a conventional steel support axial force monitoring device, and a data acquisition line 15 is led out from the middle of the axial force meter 7 so that the measurement data of the axial force meter 7 can be transmitted to an external device.
Specifically, the forced centering disc 3 is fixedly provided with a connecting plate relative to the end part of the side of the end plate 2, first through holes 5 are formed in the connecting plate, the first through holes 5 are distributed on the periphery of the connecting plate and are symmetrically arranged between the adjacent first through holes 5, second through holes 16 communicated with the first through holes 5 are formed in the end plate 2, and the second through holes 16 on the end plate 2 are symmetrically arranged. In this embodiment, the connecting member 14 may be a bolt, and the diameters of the corresponding first through hole 5 and the second through hole 16 are slightly larger than the diameters of the threaded sections of the bolt, so that the centering disc 3 and the end plate 2 can be forcibly connected after the connecting member 14 passes through the first through hole 5 and the second through hole 16.
Referring to fig. 1 to 5, when the axial force meter fixing device is used, the following specific modes are as follows:
first, the first positioning pin 6 and the second positioning pin 11 are connected to the axial force gauge 7, and the forced centering plate 3 and the carrier plate 10 are connected to both ends of the axial force gauge 7, respectively. In this case, the forced centering disc 3 is connected to the end plate 2 via the joint 14, and the axial force gauge 7 is directly positioned in the axial direction of the steel pipe end 1. The axial force of the steel support is monitored by the axial force meter 7, and is fed back by the data acquisition line 15.
The above embodiment is only one preferred technical solution of the present utility model, and it should be understood by those skilled in the art that modifications and substitutions can be made to the technical solution or parameters in the embodiment without departing from the principle and essence of the present utility model, and all the modifications and substitutions are covered in the protection scope of the present utility model.
Claims (9)
1. A steel support axial force meter fixing device is characterized in that: an axial force meter (7) is arranged between a steel pipe end (1) and a profile steel enclosing purlin (13), an end plate (2) is arranged on the side end face of the steel pipe end (1) opposite to the axial force meter (7), a forced centering disc (3) and a bearing plate (10) are respectively connected and arranged at two ends of the axial force meter (7), and a first limiting hole (4) and a second limiting hole (12) which are matched with the axial force meter (7) are respectively arranged in the end faces of the forced centering disc (3) and the bearing plate (10); the forced centering disc (3) is opposite to the end plate (2) and the diameter of the end part of the attaching side is larger than that of the axial force meter (7), the forced centering disc (3) is connected with the end plate (2) through a connecting piece (14), and the bearing plate (10) is opposite to the section steel purlin (13) and the diameter of the end part of the attaching side is larger than that of the axial force meter (7);
The central axis of the first limiting hole (4) is arranged in the axial direction of the steel pipe end (1) by taking the axis of the steel pipe end (1) as a reference.
2. The steel support shaft dynamometer of claim 1 wherein: the diameter of the forced centering disc (3) and/or the bearing plate (10) relative to the axial force meter (7) side end is smaller than the diameter of the forced centering disc away from the axial force meter (7) side end.
3. The steel support shaft dynamometer of claim 1 wherein: and a limiting structure is connected between the end part of the axial force meter (7) and the first limiting hole (4) and the second limiting hole (12).
4. A steel support shaft magnetometer fixture according to claim 3 characterised in that: the limiting structure comprises a first locating pin (6) protruding from the end wall of the first limiting hole (4), a first end hole (8) is formed in the end face of the side of the axial force meter (7) opposite to the forced centering disc (3), and the first locating pin (6) is matched with the first end hole (8).
5. The steel support shaft dynamometer of claim 4 wherein: the first locating pin (6) is externally provided with threads, and is connected with the first end head hole (8) through a thread pair.
6. A steel support shaft magnetometer fixture according to claim 3 characterised in that: the limiting structure comprises a second locating pin (11) protruding from the end wall of the second limiting hole (12), a second end hole (9) is formed in the end face of the axial force meter (7) opposite to the bearing plate (10), and the second locating pin (11) is matched with the second end hole (9).
7. The steel support shaft dynamometer of claim 6 wherein: the second locating pin (11) is externally provided with threads, and is connected with the second end hole (9) through a thread pair.
8. The steel support shaft dynamometer of claim 1 wherein: a spacing area is arranged between the forced centering disc (3) and the bearing plate (10), and the axial force meter (7) is provided with a data acquisition line (15) extending to the outside in the spacing area.
9. The steel support shaft dynamometer of claim 1 wherein: the forced centering disc (3) is provided with a first through hole (5) in the end part of the side opposite to the end plate (2), the end plate (2) is provided with a second through hole (16) communicated with the first through hole (5), and the connecting piece (14) penetrates through the first through hole (5) and the second through hole (16) to connect the forced centering disc (3) with the end plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322366408.8U CN220888753U (en) | 2023-08-31 | 2023-08-31 | Steel support axial force meter fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322366408.8U CN220888753U (en) | 2023-08-31 | 2023-08-31 | Steel support axial force meter fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220888753U true CN220888753U (en) | 2024-05-03 |
Family
ID=90879194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322366408.8U Active CN220888753U (en) | 2023-08-31 | 2023-08-31 | Steel support axial force meter fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220888753U (en) |
-
2023
- 2023-08-31 CN CN202322366408.8U patent/CN220888753U/en active Active
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