Steel support adjustable head stress maintaining device

Abstract

The utility model relates to the technical field of steel supports, and particularly discloses a steel support adjustable head stress retaining device which comprises a fixed seat, a guide plate and a force bearing plate, an iron wedge is inserted between the guide plate and the fixed seat, the force bearing plate is fixedly connected to the side, away from the iron wedge, of the guide plate, and a prestressed column is fixedly arranged on the side, close to the guide plate, of the force bearing plate. The prestressed column is provided with a driving piece used for driving the prestressed column to be away from the fixing base. The driving part is controlled to drive the prestressed column to be far away from the fixing seat, the prestressed column can apply prestress far away from the fixing seat to the bearing plate, when the pressure borne by the fixing plate is reduced, the prestressed column can drive the fixing plate and the guide plate to be far away from the fixing seat, the iron wedge is not prone to falling off, and stable supporting of the foundation pit is guaranteed; the problem that a steel support is difficult to stably support is solved on the whole.

Description

Technical Field

[0001] The present application relates to the technical field of steel supports, and in particular to a stress maintaining device for a steel support active head. Background Art

[0002] During the construction of the subway, it is often necessary to build a foundation pit. In order to maintain the stability of the foundation pit, it is often necessary to use steel support joints to support the foundation pit.

[0003] A common steel support movable head includes a fixed seat and a movable end. The movable end includes a guide plate and a load-bearing plate. The guide plate is slidably installed on the fixed seat. Both the guide plate and the fixed seat are provided with corresponding sockets. Iron wedges are inserted into the sockets to fix and lock the guide plate and the fixed seat.

[0004] Regarding the above-mentioned related technologies, after the steel support is erected, due to deformation of the foundation pit retaining structure or collision and other reasons, the prestressing of the steel support may be lost, the iron wedges may easily fall off, the guide plate may slide close to the fixed seat, and the steel support may be difficult to support stably. Utility Model Content

[0005] In order to improve the problem that steel supports are difficult to stably support, the present application provides a stress maintaining device for a steel support active head.

[0006] The present application provides a steel support joint head stress maintaining device adopts the following technical solution:

[0007] A stress maintaining device for a steel support active head comprises a fixed seat, a guide plate and a load-bearing plate, an iron wedge is inserted between the guide plate and the fixed seat, the load-bearing plate is fixedly connected to the side of the guide plate away from the iron wedge, a prestressed column is fixedly arranged on the side of the load-bearing plate close to the guide plate, the prestressed column is provided with a driving member for driving the prestressed column away from the fixed seat, the prestressed column is a bolt column, the driving member is a nut, the nut is threadedly sleeved on the bolt column, the nut is abutted against the fixed seat, and an inclined support plate is arranged between the prestressed column and the load-bearing plate.

[0008] By adopting the above technical solution, the driving member is controlled to drive the prestressed column away from the fixed seat, and the prestressed column can apply a prestress away from the fixed seat to the load-bearing plate. When the pressure on the fixed plate is reduced, the prestressed column can drive the fixed plate and the guide plate away from the fixed seat, and the iron wedge is not easy to fall off, which is conducive to ensuring the stable support of the foundation pit and improves the problem of the difficulty of stable support of the steel support as a whole. Turning the nut can make the nut and the fixed seat collide, and continuing to tighten the nut can apply a pressure away from the fixed seat to the bolt column. With the help of the inclined support plate, the reinforcing effect of the prestressed column on the load-bearing plate can be enhanced.

[0009] Optionally, a plurality of bolt columns are provided.

[0010] By adopting the above technical solution, multiple bolt columns cooperate with each other, which can reduce the slippage of nuts on bolts, and is conducive to enabling the prestressed column to stably support the bearing plate.

[0011] Optionally, a plurality of nuts are provided on the bolt column.

[0012] By adopting the above technical solution, multiple nuts are matched together to enhance the firmness of the nuts.

[0013] Optionally, the fixing seat has a mounting plate, on which a rotating disk is rotatably mounted, and a rotating axis of the rotating disk is coaxial with the bolt column.

[0014] By adopting the above technical solution, when the nut is tightened and the nut is abutted against the rotating disk, the rotating disk can rotate with the nut, which is convenient for the operator to rotate the nut.

[0015] Optionally, a limiting groove is provided on the rotating disk, and the nut is located in the limiting groove.

[0016] By adopting the above technical solution, the limiting groove can limit the nut.

[0017] Optionally, a locking member for locking the rotation of the rotating disk is provided on the mounting plate.

[0018] By adopting the above technical solution, after tightening the nut, the locking member is controlled to lock the rotation of the rotating disk, which is beneficial to reducing the rotation of the nut.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. The control driving member drives the prestressed column away from the fixed seat. The prestressed column can apply a prestress away from the fixed seat to the bearing plate. When the pressure on the fixed plate is reduced, the prestressed column can drive the fixed plate and the guide plate away from the fixed seat. The iron wedge is not easy to fall off, which is conducive to ensuring the stable support of the foundation pit and improving the problem of the difficulty of stable support of the steel support as a whole;

[0021] 2. Turn the nut until it contacts the fixing seat. Continue tightening the nut. The nut will apply pressure to the bolt column away from the fixing seat.

[0022] 3. The combination of multiple bolt columns and nuts can reduce the slippage of nuts on the bolts, which is conducive to the prestressed column to stably support the bearing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0025] Figure 2 It is a schematic diagram of the overall structure of another perspective of the embodiment of the present application;

[0026] Figure 3 This is a partial structural diagram for demonstrating the installation of the rotating disk.

[0027] Figure numerals: 1, fixing seat; 11, mounting plate; 111, threaded hole; 2, guide plate; 3, load-bearing plate; 4, iron wedge; 5, prestressed column; 51, inclined support plate; 6, driving member; 7, rotating disk; 71, limiting groove; 72, mounting hole; 8, locking member. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] The present application embodiment discloses a stress maintaining device for a steel support joint. Figure 1 and Figure 2 The stress maintaining device of the steel support active head includes a fixed seat 1, a guide plate 2 and a bearing plate 3. An iron wedge 4 is inserted between the guide plate 2 and the fixed seat 1. The bearing plate 3 is vertically fixedly connected to the side of the guide plate 2 away from the iron wedge 4. A prestressed column 5 is fixedly arranged on the side of the bearing plate 3 close to the guide plate 2. A driving member 6 for driving the prestressed column 5 away from the fixed seat 1 is arranged on the prestressed column 5. The driving member 6 is controlled to drive the prestressed column 5 away from the fixed seat 1. The prestressed column 5 can apply a prestress away from the fixed seat 1 to the bearing plate 3. When the pressure on the fixed plate is reduced, the prestressed column 5 can drive the fixed plate and the guide plate 2 away from the fixed seat 1. The iron wedge 4 is not easy to fall off, which is conducive to ensuring the stable support of the foundation pit and improves the problem of the difficulty of stable support of the steel support as a whole.

[0030] The prestressed column 5 can be detachably fixedly connected to the bearing plate 3; the prestressed column 5 is a bolt column, and further, the bolt column is an M36 high-strength bolt, a section of the bolt column is fixedly connected to the bearing plate 3, and further, the bolt column is vertically welded to the bearing plate 3, and the driving member 6 is a nut, the nut is threadedly sleeved on the bolt column, and the nut is against the fixing seat 1. The operator rotates the nut to make the nut against the fixing seat 1, and the operator continues to tighten the nut, and the nut can apply a pressure to the bolt column away from the fixing seat 1.

[0031] Reference Figure 1 and Figure 2 In order to improve the stability of the bearing plate 3, multiple bolt columns are provided. In the embodiment of the present application, two bolt columns are provided, and the guide plate 2 is located between the two bolt columns. The two bolt columns cooperate to support the bearing plate 3 more stably.

[0032] In order to improve the stability of the nut, multiple nuts are arranged on the bolt column. In this embodiment, two nuts can be arranged. Multiple nuts cooperate to enhance the firmness of the nut.

[0033] An oblique support plate 51 is welded between the prestressed column 5 and the bearing plate 3. With the help of the oblique support plate 51, the reinforcing effect of the prestressed column 5 on the bearing plate 3 can be enhanced.

[0034] Reference Figure 1 and Figure 3 In another embodiment, a mounting plate 11 is integrally cast on the fixing seat 1, and a rotating disk 7 is rotatably mounted on the mounting plate 11, and the rotating axis of the rotating disk 7 is coaxial with the bolt column. When the nut is tightened and the nut is abutted against the rotating disk 7, the rotating disk 7 can rotate with the nut, which is convenient for the operator to rotate the nut.

[0035] A limiting groove 71 is provided on one side of the rotating disk 7 close to the prestressed column 5 , and a portion of a nut is located in the limiting groove 71 . The limiting groove 71 can limit the nut, thereby ensuring the abutment between the nut and the rotating disk 7 .

[0036] The opening cross section of the limiting groove 71 can be adapted to the nut, so as to ensure that the rotating disk 7 rotates with the nut, and when the rotating disk 7 is locked, the rotation of the nut can be firmly locked. The groove depth of the limiting groove 71 is less than the length of the nut.

[0037] The mounting plate 11 is provided with a locking member 8 for locking the rotation of the rotating disk 7. After tightening the nut, the locking member 8 is controlled to lock the rotation of the rotating disk 7, which helps to reduce the rotation of the nut.

[0038] Reference Figure 1 and Figure 3The mounting plate 11 is provided with a threaded hole 111, and a plurality of threaded holes 111 are sequentially provided around the axis of the rotating disk 7. A mounting hole 72 is provided on the rotating disk 7 corresponding to any threaded hole 111. The locking member 8 is a screw rod inserted into the mounting hole 72, and the screw rod and the threaded hole 111 are thread-matched. When the rotating disk 7 is rotated and the mounting hole 72 is aligned with one of the threaded holes 111, the screw rod is rotated to be inserted into the mounting hole 72, thereby realizing a firm locking of the rotating disk 7.

[0039] Ball bearings may be provided between the rotating disk 7 and the mounting plate 11 , and by means of the ball bearings, the rotating disk 7 and the mounting plate 11 can be supported, while reducing friction between the rotating disk 7 and the mounting plate 11 .

[0040] The implementation principle of the steel support active head stress maintaining device of the embodiment of the present application is: controlling the driving member 6 to drive the prestressed column 5 away from the fixed seat 1, the prestressed column 5 can apply a prestress away from the fixed seat 1 to the load-bearing plate 3, when the pressure on the fixed plate is reduced, the prestressed column 5 can drive the fixed plate and the guide plate 2 away from the fixed seat 1, the iron wedge 4 is not easy to fall off, which is beneficial to ensuring the stable support of the foundation pit and improving the problem of the difficulty in stable support of the steel support as a whole.

[0041] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The above are all optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stress maintaining device for a steel support joint, comprising a fixing seat (1), a guide plate (2) and a bearing plate (3), wherein an iron wedge (4) is inserted between the guide plate (2) and the fixing seat (1), and the bearing plate (3) is fixedly connected to a side of the guide plate (2) away from the iron wedge (4), characterized in that: A prestressed column (5) is fixedly arranged on one side of the bearing plate (3) close to the guide plate (2); a driving member (6) is arranged on the prestressed column (5) for driving the prestressed column (5) away from the fixing seat (1); the prestressed column (5) is a bolt column; the driving member (6) is a nut; the nut is threadedly sleeved on the bolt column; the nut abuts against the fixing seat (1); and an inclined support plate (51) is arranged between the prestressed column (5) and the bearing plate (3).

2. A steel support joint stress maintaining device according to claim 1, characterized in that: A plurality of bolt columns are provided.

3. A steel support joint stress maintaining device according to claim 2, characterized in that: A plurality of nuts are arranged on the bolt column.

4. A steel support joint stress maintaining device according to claim 3, characterized in that: The fixing seat (1) has a mounting plate (11), on which a rotating disk (7) is rotatably mounted, and the rotating axis of the rotating disk (7) is coaxial with the bolt column.

5. A steel support joint stress maintaining device according to claim 4, characterized in that: The rotating disk (7) is provided with a limiting groove (71), and the nut is located in the limiting groove (71).

6. A steel support joint stress maintaining device according to claim 5, characterized in that: The mounting plate (11) is provided with a locking member (8) for locking the rotation of the rotating disk (7).

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