Filling type adjustable end

Abstract

The utility model discloses a filling type adjustable end, which belongs to the technical field of steel structure foundation pit support, and comprises a fixed part and a movable part, the fixed part comprises a mounting plate, the mounting plate is used for connecting a steel support, the mounting plate is fixedly connected with a fixed column, a filling bin is arranged in the fixed column, one side of the fixed column close to the mounting plate is provided with a liquid injection pipe, and the liquid injection pipe is communicated with the inside and the outside of the filling bin; the movable part comprises a flange plate, a movable column is fixedly connected to the flange plate, the outer diameter of the movable column is matched with the inner diameter of the filling bin, the movable column can be inserted into the filling bin, and a space formed between the bottom surface of the movable column and the bottom surface of the filling bin is filled with solidifiable slurry. The adjustable end is fixed by filling the solidifiable slurry, so that the adjustable end is convenient to erect in the construction process, the erecting efficiency of the steel support is effectively improved, the problem of eccentric compression of the steel wedge type adjustable end is solved, and the adjustable end has more excellent pre-applied axial force retaining performance and bending resistance; and the stability and the reliability of the steel support structure are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to steel structure foundation pit support technical field especially relates to a filling type adjustable end. BACKGROUND

[0002] Steel support system is widely applied in the inner support and protection system because of its light weight, easy hoisting, quick and efficient assembly type installation, easy removal and reusability, low single cost and many other advantages. Moreover, the application and maintenance of pre-axial force in the subway foundation pit are mainly completed by the steel wedge type adjustable end. The steel wedge type adjustable end is arranged at the end of the steel support and is an important node connecting the enclosure structure and the support structure. The steel wedge type adjustable end is widely applied because of a series of advantages, but its defects are also very obvious. Since the steel wedge and the adjustable end are completely separated, the integrity of the steel wedge type adjustable end is poor, and the stress is concentrated, mainly at the steel wedge, and the stress area of the steel wedge is smaller than that of the steel support. At the same time, since each adjustable end is equipped with multiple steel wedges, the steel wedges often appear point stress and cannot be fully wedged during the combination process. Since the steel wedges are concentrated in the middle, the bending resistance of the steel wedge type adjustable end is low. These deficiencies reduce the performance of the steel wedge type adjustable end.

[0003] The existing steel wedge type adjustable end is obviously lower than the steel support in the pre-axial force maintaining performance, the bearing capacity and the bending resistance, causing the local weakening of the support rod, which will inevitably cause the performance deficiency of the support rod or the material waste, having optimization space. Therefore, it is necessary to propose a new type of adjustable end with good pre-axial force maintaining performance, bearing capacity and bending resistance. SUMMARY

[0004] To solve the above technical problems, the utility model provides a filling type adjustable end.

[0005] To achieve the above purpose, the utility model provides a filling type adjustable end, which comprises:

[0006] The fixed part comprises a mounting plate, the mounting plate is used for connecting a steel support, a fixed column is fixedly connected to the mounting plate, a filling bin is formed in the fixed column, a liquid injection pipe is formed on one side of the fixed column close to the mounting plate, and the liquid injection pipe is in communication with the inside and outside of the filling bin;

[0007] The movable part comprises a flange plate, a movable column is fixedly connected to the flange plate, the outer diameter of the movable column matches the inner diameter of the filling bin, so that the movable column can be inserted into the filling bin, and a space formed between the bottom surface of the movable column and the bottom surface of the filling bin is filled with coagulable slurry.

[0008] Preferably, a support plate is circumferentially fixed to the top of the fixed column, and is used to abut against the jack during installation.

[0009] Preferably, a plurality of installation holes are circumferentially formed in the edge of the installation plate for installing bolts.

[0010] Preferably, a plurality of rib plates are fixed to the connection between the installation plate and the fixed column and the connection between the support plate and the fixed column.

[0011] Preferably, a sealing ring is arranged outside the end of the movable column close to the fixed column, and seals the gap between the outer wall of the movable column and the inner wall of the filling bin.

[0012] Preferably, a rib is fixed to the outside of the movable column.

[0013] Preferably, a chamfer is formed in the edge of the filling bin close to the movable column.

[0014] Preferably, a cavity is formed in the movable column.

[0015] Compared with the prior art, the present application has the following advantages and technical effects:

[0016] During use, the jack can be used to apply a pre-applied axial force between the movable part and the fixed part, so that the movable part is separated from the fixed part, and a slurry pouring space is formed between the bottom surface of the movable column and the bottom surface of the filling bin. When the pre-applied axial force design value is reached, the slurry pouring space can be injected with coagulable slurry through the liquid injection pipe, and after the coagulable slurry is coagulated and stable, the jack can be removed, so as to achieve the effects of adjusting the length of the steel support and applying the pre-applied axial force. Compared with the traditional steel wedge type movable end, the movable end is fixed by filling coagulable slurry, which not only facilitates the erection of the movable end during construction, effectively improves the erection efficiency of the steel support, but also solves the problem of eccentric compression of the steel wedge type movable end, has more excellent pre-applied axial force retention performance and bending resistance, and greatly improves the stability and reliability of the steel support structure. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0018] Fig. 1 is a filling type movable end structure schematic view of the present application;

[0019] Fig. 2 is a filling type movable end fixed part and movable part insertion state structure schematic view of the present application;

[0020] Fig. 3The utility model discloses a filling type articulated end.

[0021] In the figure: 1, mounting plate; 2, fixed column; 3, filling bin; 4, liquid injection pipe; 5, flange plate; 6, movable column; 8, support plate; 9, mounting hole; 10, rib plate; 11, sealing ring; 12, rib; 13, cavity. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative work belong to the protection scope of the utility model.

[0023] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail with reference to the drawings and specific embodiments.

[0024] Referring to Figs. 1 to 3 The embodiment provides a filling type articulated end, which comprises:

[0025] The fixed part comprises a mounting plate 1, and the mounting plate 1 is used for connecting a steel support; a fixed column 2 is fixedly connected to the mounting plate 1; a filling bin 3 is formed in the fixed column 2; a liquid injection pipe 4 is formed in one side of the fixed column 2 close to the mounting plate 1; and the liquid injection pipe 4 is communicated with the inside and outside of the filling bin 3.

[0026] The movable part comprises a flange plate 5, and a movable column 6 is fixedly connected to the flange plate 5; the outer diameter of the movable column 6 is matched with the inner diameter of the filling bin 3, so that the movable column 6 can be inserted into the filling bin 3; and the space formed between the bottom surface of the movable column 6 and the bottom surface of the filling bin 3 is filled with coagulable slurry.

[0027] The coagulable slurry can be mixed two-component polyurethane material, cement-based slurry and the like.

[0028] During use, the jack can be used to apply a pre-axial force between the movable part and the fixed part, so that the movable part is separated from the fixed part, and at this time, a slurry filling space is formed between the bottom surface of the movable column 6 and the bottom surface of the filling bin 3. When the pre-axial force design value is reached, the slurry filling space can be injected with coagulable slurry through the liquid injection pipe 4, and after the coagulable slurry is coagulated and stable, the jack can be removed, thereby achieving the functions of adjusting the length of the steel support and applying the pre-axial force. Compared with the traditional steel wedge type movable end, the movable end is fixed in this way, which not only facilitates the erection of the movable end during construction and effectively improves the erection efficiency of the steel support, but also solves the problem of eccentric compression of the steel wedge type movable end, has more excellent pre-axial force retention performance and bending resistance, and greatly improves the stability and reliability of the steel support structure.

[0029] Further optimization scheme, the top of the fixed column 2 is circumferentially fixed with a support plate 8, and the support plate 8 is used for abutting against the jack during installation.

[0030] The support plate 8 circumferentially fixed on the top of the fixed column 2, during construction, one end of the jack abuts against the support plate 8, and the other end abuts against the flange plate 5. This design provides a stable force point for the jack, so that the jack can more conveniently and effectively apply a pre-axial force to separate the fixed part and the movable part, ensuring the smooth progress of the pre-axial force application process and improving the construction efficiency and accuracy.

[0031] Further optimization scheme, the edge of the mounting plate 1 is circumferentially provided with a plurality of mounting holes 9 for mounting bolts.

[0032] The mounting plate 1 is mounted on the steel support by bolts.

[0033] Further optimization scheme, the connection between the mounting plate 1 and the fixed column 2 and the connection between the support plate 8 and the fixed column 2 are both fixed with a plurality of rib plates 10.

[0034] The plurality of rib plates 10 fixed at the connection between the mounting plate 1 and the fixed column 2 and the connection between the support plate 8 and the fixed column 2 effectively enhance the structural strength of these connection parts. When subjected to external force, the rib plates 10 can disperse stress and prevent deformation and fracture at the connection, making the entire structure more stable and reliable, prolonging the service life of the movable end and improving its adaptability in complex engineering environments.

[0035] Further optimization scheme, the end of the movable column 6 close to the fixed column 2 is provided with a sealing ring 11 outside, and the sealing ring 11 seals the gap between the outer wall of the movable column 6 and the inner wall of the filling bin 3.

[0036] The sealing ring 11 arranged outside the end of the fixed column 2 close to the movable column 6 tightly fits the gap between the outer wall of the movable column 6 and the inner wall of the filling bin 3. After the coagulable slurry is injected, the sealing ring 11 can effectively prevent the slurry from flowing out of the gap, ensure that the slurry is filled in the predetermined space, guarantee the filling effect of the slurry, and further guarantee the reliability and stability of the movable end fixation, thereby avoiding the influence of slurry leakage on the performance of the steel support structure.

[0037] Further optimization scheme, the rib 12 is fixedly connected outside the movable column 6.

[0038] The rib 12 fixedly connected outside the movable column 6 significantly enhances the strength of the side wall of the movable column 6. When external force is borne, the rib 12 can share the pressure borne by the side wall of the movable column 6, prevent the side wall from being deformed, improve the carrying capacity of the movable column 6, guarantee the stability and reliability of the movable column 6 in the use process, and make the movable column 6 better adapt to various complex engineering conditions.

[0039] Further optimization scheme, the edge close to the movable column 6 of the filling bin 3 is provided with a chamfer.

[0040] The chamfer provided at the edge close to the movable column 6 of the filling bin 3 can play a good guiding role when the movable column 6 is inserted into the filling bin 3. It guides the movable column 6 to accurately enter the filling bin 3, reduces the butt joint difficulty, improves the construction efficiency, reduces the collision and friction between the movable column 6 and the filling bin 3, protects the structural integrity of the two, and is beneficial to the smooth installation and use of the movable end.

[0041] Further optimization scheme, the cavity 13 is arranged in the movable column 6.

[0042] The cavity 13 arranged in the movable column 6 effectively reduces the material of the movable column 6 on the premise that the normal function of the movable column 6 is not affected. This not only reduces the production cost, but also reduces the overall weight of the movable column 6, makes the construction process more convenient, and improves the economy and practicability of the steel support structure.

[0043] The details of the utility model are conventional technical means known to those skilled in the art.

[0044] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0045] The above-described embodiments are merely preferred modes of the present application, and are not intended to limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those of ordinary skill in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A filled living end characterized in that, The utility model relates to a kind of steel support filling device, including: Fixed part, including mounting plate (1), the mounting plate (1) is used to connect steel support, fixed column (2) is fixedly connected on the mounting plate (1), filling bin (3) is opened in the fixed column (2), liquid injection pipe (4) is opened in the side of the fixed column (2) close to the mounting plate (1), the liquid injection pipe (4) is communicated inside and outside the filling bin (3); Movable part, including flange plate (5), movable column (6) is fixedly connected on the flange plate (5), the outer diameter of the movable column (6) matches the inner diameter of the filling bin (3), so that the movable column (6) can be inserted into the filling bin (3), and the space formed between the bottom surface of the movable column (6) and the bottom surface of the filling bin (3) is filled with coagulable slurry.

2. The filled living end of claim 1, wherein: The top of the fixed column (2) is circumferentially fixed with a support plate (8), which is used to abut against a jack during installation.

3. The filled living end of claim 1, wherein: A plurality of mounting holes (9) are circumferentially formed around the edge of the mounting plate (1) for mounting bolts.

4. The filled living end of claim 2, wherein: A plurality of rib plates (10) are fixedly connected at the connection between the mounting plate (1) and the fixed column (2) and the connection between the support plate (8) and the fixed column (2).

5. The filled living end of claim 1, wherein: A sealing ring (11) is provided on the outer side of the end of the movable column (6) close to the fixed column (2), which seals the gap between the outer wall of the movable column (6) and the inner wall of the filling bin (3).

6. The filled living end of claim 1, wherein: A rib (12) is fixedly connected outside the movable column (6).

7. The filled living end of claim 1, wherein: A chamfer is formed around the edge of the filling bin (3) close to the movable column (6).

8. The filled living end of claim 1, wherein: A cavity (13) is formed inside the movable column (6).

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