Fixing device of profile steel inclinometer

Abstract

The utility model discloses a fixing device for a section steel inclinometer, which comprises an inclinometer fixed at the joint of a flange plate and a web plate of section steel, extending along the height direction and extending out of the top end face of the section steel, a sinking-assisting shoe arranged at the lower end of the inclinometer, and a plurality of steel pressing rods arranged at intervals up and down and used for pressing the inclinometer. Two ends are respectively welded with a flange plate and a web plate of the profile steel; the inclinometer pipe is provided with a plurality of axial limiting structures which abut against the lower surface of the steel pressing rod to prevent the inclinometer pipe from floating upwards. The sinking assisting shoe comprises a steel sleeve sleeved at the lower end of the inclinometer pipe and a big-end-up steel conical head fixed at the bottom end of the steel sleeve, and an axial limiting structure for preventing the steel sleeve from moving upwards is arranged on the profile steel; the middle section of the steel pressing rod is a steel straight rod, two symmetrical welding sections are arranged at the two ends of the steel straight rod, one welding section is attached to and welded to the flange plate, and the other welding section is attached to and welded to the web plate. The fixing device is relatively simple in structure, convenient and rapid to install, good in floating limiting effect on the side inclined pipe and good in synchronous sinking performance of the sinking assisting shoe at the lower end and the profile steel.

Description

Fixing device for steel inclinometer tubes Technical Field

[0001] This utility model relates to the field of foundation pit retaining pile construction technology, specifically a fixing device for a steel inclinometer tube. Background Technology

[0002] Pre-installing inclinometer tubes to monitor the lateral horizontal displacement of the foundation pit retaining wall is a very common technique.

[0003] In the construction of SMW or TRD method piles, early inclinometers were typically installed by drilling into the cement-soil mixing pile after pile completion. However, this method is gradually being phased out due to its drawbacks, such as the need for additional drilling and installation equipment and the long installation time.

[0004] In recent years, a common application is inserting a vertically mounted inclinometer tube, fixed to an H-beam or I-beam, into the predetermined elevation of the cement-soil before it has hardened, such as within half an hour after mixing. To ensure a secure fixation, various structural methods have been employed. Some use multiple spaced fixing seats and screws; others use multiple arc-shaped clamps and screws matching the inclinometer tube's shape; still others use multiple sleeves spaced at intervals around the inclinometer tube, which are then fixed to the steel section. While these fixing devices are relatively complex and time-consuming to install, they overlook a crucial point: the inclinometer tube only needs to be inserted to the predetermined depth without detaching during the insertion process, within 30 minutes of the cement-soil hardening process (e.g., during SMW or TRD pile construction). Once the cement-soil has hardened, even the most robust fixing structure becomes redundant. However, the load-bearing focus of the fixing device for the steel inclinometer tube in the above-mentioned existing technologies is not on the structural robustness and axial limiting reliability of the sinking aid shoe at the bottom of the inclinometer tube itself. Instead, the structures of the upper and lower fixing devices are the same, and the density of their installation is also the same. The upper and middle parts waste a lot of materials and installation manpower, while the fixing effect of the lower part is not good. In addition, in order to prevent the inclinometer tube from floating up during the sinking process with the steel section, some use a pressure plate at the top to press down the inclinometer tube, so that the inclinometer tube cannot extend above the top of the steel section. This is not practical to use in construction. Some use clamps with soft pads to hold the inclinometer tube tightly, but the effect is not significant, and the inclinometer tube still floats up. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a fixing device for a steel inclinometer tube that is relatively simple in structure, convenient and quick to install, has a good buoyancy limiting effect on the inclinometer tube, and has good synchronous sinking ability between the lower sinking shoe and the steel section.

[0006] The technical solution of this utility model is to provide a fixing device for a steel inclinometer tube, including an inclinometer tube fixed at the junction of the flange and web of an H-beam or I-beam and extending along the height direction to protrude from the top surface of the steel section. The lower end of the inclinometer tube has a sinking shoe. Multiple steel pressure rods are arranged at intervals along the top and bottom to press the inclinometer tube, and the two ends of the steel pressure rods are welded to the flange and web of the steel section, respectively. The inclinometer tube has multiple axial limiting structures that abut against the lower surface of the steel pressure rods to prevent the inclinometer tube from floating. The sinking shoe includes a steel sleeve fitted on the lower end of the inclinometer tube and a steel conical head that is larger at the top and smaller at the bottom fixed on the bottom end of the steel sleeve. The fixing device for the steel inclinometer tube also includes an axial limiting structure to prevent the steel sleeve from moving upward.

[0007] With the above structure, the fixing device for the steel inclinometer tube of this utility model has the following advantages: the structure is relatively simple and the installation is convenient and quick, such as only needing to weld the two ends of each steel pressure rod; because there are multiple axial limiting structures on the inclinometer tube that abut against the lower surface of the steel pressure rod to prevent the inclinometer tube from floating, the buoyancy limiting effect on the inclinometer tube is good; and because the sinking aid shoe is a steel sleeve fitted onto the lower end of the inclinometer tube and has a steel conical head that is larger at the top and smaller at the bottom, and has an axial limiting structure to prevent the steel sleeve from moving upward, the sinking aid shoe at the lower end sinks well synchronously with the steel section. It can ensure that within 30 minutes of construction of SMW or TRD method piles before cement soil solidification, the inclinometer tube can be inserted to the predetermined depth with the steel section without detaching during the insertion process, and it also saves time and effort, material costs, and labor costs during the installation process.

[0008] Furthermore, the middle section of the steel compression member is a straight steel rod, with two symmetrical welded sections at both ends. One welded section is attached to and welded to the flange plate, and the other welded section is attached to and welded to the web plate. This structure ensures strong welds, good pressure on the circumferential surface of the inclinometer tube, and further guarantees the technical benefits of saving time and effort in the welding process, as well as reducing material and labor installation costs.

[0009] Furthermore, multiple vertical reinforcing ribs are provided on the outer circumference of the steel sleeve. This structure further improves the robustness of the sinking aid shoe itself, such as the strength, rigidity, and guiding performance of the steel sleeve, and further ensures the technical effect of good synchronous sinking of the sinking aid shoe and the structural steel.

[0010] Furthermore, there are multiple steel pressure bars welded to the flange plate and web plate, pressing against the outer surface of the steel sleeve. With the above structure, the steel pressure bars are spaced more closely together at different intervals along the vertical direction, and more spaced out at different intervals in the upper middle part of the steel section. There are multiple steel pressure bars in this area, such as two bars at the top and two at the bottom, pressing against the outer surface of the steel sleeve. Combined with the axial limiting structure to prevent the steel sleeve from moving upward as described above and below, the connection between the sinking aid shoe and the steel section is made more robust and reliable, further ensuring the technical effect of good synchronous sinking of the sinking aid shoe and the steel section, while the upper middle part saves on material costs.

[0011] Furthermore, the axial limiting structure for preventing the steel sleeve from moving upward is as follows: the diameter of the steel sleeve is larger than the diameter of the lower end of the inclinometer tube; a steel pressure bar welded to the flange plate and web plate presses against both the outer surface of the inclinometer tube and the upper end face of the steel sleeve to prevent the steel sleeve from moving upward axially. With this structure, the steel pressure bar serves a dual purpose: pressing against the inclinometer tube at this location and restricting the steel sleeve from moving upward axially relative to the steel section. Its structure is simple, its operation is convenient, and it further ensures the technical effect of good synchronous sinking of the sinking aid shoe and the steel section.

[0012] Furthermore, the steel sleeve is fixed to the lower end of the inclinometer tube. With the above structure, the steel sleeve is fixed to the lower end of the inclinometer tube with an interference fit and glued, which improves the effect of preventing the inclinometer tube from floating and preventing the sinking aid shoe from moving upward axially, and further ensures the technical effect of good synchronous sinking of the sinking aid shoe and the steel section.

[0013] Furthermore, the axial limiting structure on the inclinometer tube consists of multiple convex circular limiting rings, spaced vertically and integrally formed with the inclinometer tube, with the top surface of each ring abutting against the lower surface of the steel pressure rod. This structure effectively prevents the inclinometer tube from floating and ensures it extends beyond the top surface of the steel profile, guaranteeing its normal inclinometer function. This axial limiting structure is simple, stable, and reliable. Attached Figure Description

[0014] Figure 1 is a structural schematic diagram of a preferred embodiment of the fixing device for the steel inclinometer tube of this utility model.

[0015] Figure 2 is an enlarged structural diagram of A in Figure 1.

[0016] Figure 3 is a magnified schematic diagram of structure B in Figure 1.

[0017] Figure 4 is a front enlarged structural schematic diagram of the steel compression bar in Figures 2 and 3.

[0018] As shown in the figure:

[0019] 1. Section steel; 11. Flange plate; 12. Web plate; 13. Joint; 14. Top surface of section steel.

[0020] 2. Inclinometer tube; 21. Circular limiting ring; 211. Top surface of the limiting ring;

[0021] 3. Sinking aid boot; 31. Steel sleeve; 32. Steel conical head; 33. Vertical reinforcing rib; 34. Top end face;

[0022] 4. Steel compression bar; 41. Steel straight bar; 411. Bow back; 412. Lower surface; 42. Welded section. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions of specific embodiments are intended to aid in understanding this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various specific embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] As shown in Figures 1, 2, 3 and 4.

[0025] A preferred embodiment of the fixing device for the steel inclinometer tube of this utility model includes an inclinometer tube 2 fixed at the junction 13 of the flange plate 11 and web plate 12 of the steel section 1, such as an H-beam or an I-beam, extending along the height direction and extending out of the top surface 14 of the steel section. The lower end of the inclinometer tube 2 is equipped with a sinker 3.

[0026] Multiple steel pressure rods 4 are arranged at intervals along the top and bottom to press the inclinometer tube 2. The two ends of the steel pressure rods 4 are welded to the flange plate 11 and the web plate 12 of the steel profile 1, respectively. The inclinometer tube 2 has multiple axial limiting structures that abut against the lower surface 412 of the steel straight rods 41 of the steel pressure rods 4 to prevent the inclinometer tube 2 from floating upward. The sinking shoe 3 includes a steel sleeve 31 that fits onto the lower end of the inclinometer tube 2 and a steel conical head 32 that is larger at the top and smaller at the bottom and fixed to the bottom end of the steel sleeve 31. In a preferred embodiment of the fixing device for the steel inclinometer tube of this utility model, an axial limiting structure is also included to prevent the steel sleeve 31 from moving upward.

[0027] The middle section of the steel pressure rod 4 is a straight steel rod 41. At both ends of the straight steel rod 41 are two symmetrical welded sections 42. One welded section 42 is attached to and welded to the flange plate 11, and the other welded section 42 is attached to and welded to the web plate 12. The two steel rods, the straight steel rod 41 in the middle section and the welded sections 42 at both ends, can be bent in one step. The two steel rods, i.e., the two welded sections 42, have the same length and the same angle with the straight steel rod 41 in the middle section, such as 20°-30°. Graphically, the steel pressure rod 4 can be shaped like a "︺", with the side of the straight steel rod 41 away from the two welded sections 42, i.e., the bow back 411, pressed against the outer circumference of the inclinometer tube 2. The steel pressure rod 4 can also be considered as an arc shape, with its bow back 411 pressed against the outer circumference of the inclinometer tube 2.

[0028] The outer circumference of the steel sleeve 31 is provided with multiple vertical reinforcing ribs 33. The multiple vertical reinforcing ribs 33 are arranged at intervals along the outer circumference, such as being evenly distributed along the outer circumference.

[0029] There are multiple steel pressure rods 4, such as two rods welded to the flange plate 11 and the web plate 12 at both ends, pressing against the outer surface of the steel sleeve 31. It is easy to understand that, as shown in the figure, the outer surface of the steel sleeve 31 with vertical reinforcing ribs 33 refers to the outer surface of the vertical reinforcing ribs 33, while the outer surface of the steel sleeve itself (not shown in the figure) without vertical reinforcing ribs refers to the outer surface of the steel sleeve itself. Furthermore, the shape of the steel pressure rods 4 used to press against the steel sleeve 31 is the same as that of the steel pressure rods 4 used to press against the inclinometer tube 2, except that the length of the steel pressure rods 4 used to press against the steel sleeve 31 is longer than that used to press against the inclinometer tube 2, because, as described below, the diameter of the steel sleeve 31 is larger than the diameter of the lower end of the inclinometer tube 2. Of course, the diameter of the lower end of the inclinometer tube 2 is the same as the diameter of the other sections of the inclinometer tube 2, since the diameter of the inclinometer tube 2 is the same throughout its length. The steel pressure bar used to clamp the steel sleeve 31 and the steel pressure bar used to clamp the inclinometer tube 2 are both designated by the same number, i.e., both are referred to as steel pressure bar 4.

[0030] The preferred axial limiting structure for preventing the steel sleeve 31 from moving upward is as follows: the diameter of the steel sleeve 31 is larger than the diameter of the lower end of the inclinometer tube 2, and a steel pressure rod 4 welded to the flange plate 11 and web plate 12 of the steel section 1 presses against both the outer surface of the inclinometer tube 2 and the upper end face 34 of the steel sleeve 31 to prevent the steel sleeve 31 from moving upward axially relative to the steel section 1. It is easy to understand that because the upper end face of the steel sleeve 31 and the upper end face of the vertical reinforcing rib 33 are on the same horizontal plane, the upper end face 34 is both the upper end face 34 of the steel sleeve 31 and the upper end face 34 of the vertical reinforcing rib. Of course, the axial limiting structure for preventing the steel sleeve from moving upward can also be directly welded and fixed to the flange plate and web plate of the steel section, or the steel sleeve can be fixed to the steel section by screws, etc. The steel section 1 generally includes H-beams and I-beams.

[0031] The steel sleeve 31 can be fixed to the lower end of the inclinometer tube 2, preferably by interference fit and adhesive bonding, or by interference fit alone, adhesive bonding alone, or by set screws, etc.

[0032] The preferred axial limiting structure on the inclinometer tube 2 is a plurality of vertically spaced, integrally formed with the inclinometer tube 2 and convex outwardly shaped circular limiting rings 21. The top surface of the circular limiting ring 21, i.e., the top surface 211 of the limiting ring, abuts against the lower surface 412 of the steel pressure rod 4. It is easy to understand that each axial limiting structure on the inclinometer tube 2, such as each circular limiting ring, corresponds one-to-one with each steel pressure rod 4. Of course, the axial limiting structure on the inclinometer tube can also be a plurality of vertically spaced, integrally formed with the inclinometer tube and convex outwardly shaped limiting blocks. Each group of limiting blocks can be a plurality of blocks distributed along the circumference, and the top surface of each limiting block abuts against the lower surface of the steel pressure rod. The axial limiting structure on the inclinometer tube can also be a plurality of vertically spaced, integrally formed with the inclinometer tube and convex outwardly shaped limiting posts. Each group of limiting posts can be a plurality of posts corresponding to the flange plate and the web plate. Each limiting post is embedded in a pre-set recess on the flange plate and the web plate and corresponding to its respective limiting post to prevent the inclinometer tube from floating. The lower surface 412 is also called the bottom surface.

[0033] Components, structures, or quantities not marked above are not shown in the drawings, and some components are not marked in the drawings. The drawings are for illustrative purposes only. In case of any inconsistency between the drawings and the text description, or between the drawings themselves, the text description shall prevail.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixing device for a steel inclinometer tube, comprising an inclinometer tube fixed at the junction of the flange and web of an H-beam or I-beam, extending along the height direction and protruding from the top surface of the steel section, wherein the lower end of the inclinometer tube has a sinker; characterized in that: Multiple steel pressure rods are arranged at intervals along the top and bottom to press the inclinometer tube. The two ends of the steel pressure rods are welded to the flange plate and web plate of the steel section, respectively. The inclinometer tube has multiple axial limiting structures that abut against the lower surface of the steel pressure rods to prevent the inclinometer tube from floating. The sinking shoe includes a steel sleeve that fits on the lower end of the inclinometer tube and a steel cone head that is larger at the top and smaller at the bottom and fixed to the bottom of the steel sleeve. It also includes an axial limiting structure to prevent the steel sleeve from moving upward.

2. The fixing device for the steel inclinometer tube according to claim 1, characterized in that: The middle section of the steel compression member is a straight steel bar. At both ends of the straight steel bar are two symmetrical welded sections. One welded section is attached to and welded to the flange plate, and the other welded section is attached to and welded to the web plate.

3. A device for securing a inclinometer casing to a section of reinforcing steel according to claim 2, wherein: The outer circumference of the steel sleeve is provided with multiple vertical reinforcing ribs.

4. A device for securing a inclinometer casing according to claim 3, characterised in that: There are multiple steel pressure bars welded to the flange and web and pressing against the outer surface of the steel sleeve.

5. The device for fixing the inclinometer casing according to claim 1, characterized in that: The axial limiting structure for preventing the steel sleeve from moving upward is as follows: the diameter of the steel sleeve is larger than the diameter of the lower end of the inclinometer tube, and a steel pressure bar welded to the flange plate and the web plate presses against both the outer surface of the inclinometer tube and the upper end face of the steel sleeve to prevent the steel sleeve from moving upward axially.

6. The fixing device for the steel inclinometer tube according to claim 5, characterized in that: The steel sleeve is fixed to the lower end of the inclinometer tube.

7. The fixing device for the steel inclinometer tube according to claim 1, characterized in that: The axial limiting structure on the inclinometer tube consists of multiple convex circular limiting rings that are spaced vertically and integrally formed with the inclinometer tube. The top surface of the circular limiting rings abuts against the lower surface of the steel pressure rod.

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