CN211948467U - Steel support loose head with jack balance support - Google Patents
Steel support loose head with jack balance support Download PDFInfo
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- CN211948467U CN211948467U CN202020382519.1U CN202020382519U CN211948467U CN 211948467 U CN211948467 U CN 211948467U CN 202020382519 U CN202020382519 U CN 202020382519U CN 211948467 U CN211948467 U CN 211948467U
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Abstract
The utility model provides a steel shotcrete head of living with jack balance bracket. The steel support loose joint comprises a movable part and a fixed part, a connecting plate fixedly connected with a pipe section of a steel support system is arranged at the other end of the movable part, a stopper iron position is arranged at a part of the fixed part, which is embedded into the movable part, a bearing plate is arranged at one end of the movable part, which is far away from the fixed part, axial jack placing areas are respectively arranged at two sides of the movable part, and a jack balance support is arranged in each axial jack placing area; jack balance support includes two piece at least horizontal support bars that are parallel to each other, and two piece at least horizontal support bars weld perpendicularly and lay under the district at the axial jack the utility model discloses can avoid when carrying out the axial pressurization to the steel shotcrete, the slip of jack appears, jack and steel shotcrete can not in close contact with, lead to lifting surface area to reduce, the steel shotcrete prestressing force reduces, and the steel shotcrete adds the axial force not enough in advance to and jack power of leaking produces the problem of potential safety hazard.
Description
Technical Field
The utility model belongs to deep basal pit support field especially relates to a steel shotcrete head of living with steel shotcrete adds jack balance support.
Background
At present, in municipal deep foundation pit engineering construction, in order to guarantee the stability of the deep foundation pit, the steel support is very extensive in practical application, and in a foundation pit engineering support system, the steel support adopted is generally combined with a steel support moving head with a fixed length, wherein the length of the steel support moving head can be adjusted to a certain extent. When the steel support is installed, axial prestress needs to be applied to the steel support, and then a steel wedge block is driven between the end part of the steel support and the steel support moving head so as to keep the axial prestress of the steel support. When the steel support is stressed, a crane is used for lifting a jack to suspend and prop against the steel support loose head to pre-apply axial force. When adopting this mode afterburning, the jack often is not the horizontality, need lean on the manual work to support the jack, and pressure increases gradually, and jack face and steel support face can not closely paste tightly in the jack jacking in-process, cause following two kinds of adverse effects easily:
(1) when the pressure of the jack reaches more than 50mpa, the jack forms an angle with the steel supporting surface, the jack is easy to slide, and the jack is easy to release force to generate potential safety hazards;
(2) the jack is not tightly attached to the steel surface of the steel support, the stress area is reduced, after the steel support is pressurized to a design value, the prestress of the steel support is reduced, the axial force of the steel support is insufficient, and the stability of the foundation pit is affected.
Disclosure of Invention
The utility model discloses problem to prior art exists provides a steel shotcrete head of living with balanced support of steel shotcrete force jack, and this steel shotcrete head of living can ensure that the jack can not be unsettled when the pressurization, is in the horizontality, and the gold top surface is fine with the steel shotcrete closely pastes, guarantees operating personnel's safety and convenience.
In order to solve the technical problem, the utility model provides a technical scheme: the utility model provides a steel shotcrete head of living with jack balance support, includes movable part and fixed part, be equipped with the removal chamber in the movable part, the removal intracavity of one of them one end embedding movable part of fixed part to can remove its characterized in that at removal intracavity under the effect of external force: the other end of the movable part is provided with a connecting plate fixedly connected with a pipe section of the steel support system, a part of the fixed part embedded into the movable part is provided with a stopper iron position, one end of the movable part far away from the fixed part is provided with a bearing plate, two sides of the movable part are respectively provided with an axial jack placing area, and each axial jack placing area is internally provided with a jack balance support; the jack balance support comprises at least two parallel horizontal support rods, the at least two horizontal support rods are vertically welded on the same straight line at the lower part of the axial jack placing area, and the axial jack is horizontally supported after the axial jack is placed in place.
The utility model provides a technical scheme: a plurality of inclined supporting plates are arranged between the movable part and the bearing plate, and the axial jack placing area is arranged between the adjacent inclined supporting plates on the two sides of the movable part.
The utility model discloses better technical scheme: the jack balance support is composed of two horizontal support rods, the distance between the two horizontal support rods is larger than 10cm and smaller than the axial length of the axial jack, the horizontal extension length of the two horizontal support rods is larger than the diameter of the axial jack, and a stop block is arranged at the outer end of each horizontal support rod.
The utility model discloses better technical scheme: the fixed part consists of two square supporting plates, and a gap serving as a stopper iron position is arranged between the two supporting plates; the corresponding removal chamber that sets up in the movable part divide into two, and the cavity height and the width in two removal chambers all with two backup pads phase-matches of fixed part.
The axial jack balance frame is directly added on the steel support loose head, so that the bottom of the jack can be supported by the axial jack balance frame after the jack is lifted in place, the axial jack is guaranteed not to be suspended during pressurization, the horizontal state can be always kept, the top surface of the jack is well attached to the steel support, and the sliding of the jack is avoided, so that the potential safety hazard caused by jack release force is avoided; the problem that the stress area is reduced due to the fact that the jack cannot be in close contact with the steel support is also avoided, after the steel support is pressurized to a design value, the prestress of the steel support is reduced, the pre-axial force of the steel support is insufficient, and the influence on the stability of a foundation pit is avoided; and the utility model discloses a gimbal simple structure can adopt reinforcing bar direct welding, convenient operation, low cost on the scene.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a usage state diagram of the present invention.
In the figure: the steel support system comprises a movable part, a fixed part, a steel support system pipe section, a connecting plate, a force bearing plate, an axial jack placing area, a jack balance support, an axial jack, a plug iron position, a stop block, an inclined support plate and a wedge-shaped steel block, wherein the movable part is 1, the fixed part is 2, the steel support system pipe section is 3, the connecting plate is 4, the force bearing plate is 5, the axial jack placing area is 6, the jack balance support is 7, the axial jack is 8.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. Fig. 1 is a drawing of an embodiment, which is drawn in a simplified manner and is only used for the purpose of clearly and concisely illustrating an embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The steel support piston head with the jack balance support provided in the embodiment comprises a movable part 1 and a fixed part 2, wherein the movable part 1 is a square hollow structure formed by welding metal plates, two movable cavities are arranged in the movable part 1, the fixed part 2 is composed of two square metal support plates, a gap serving as a stopper iron position 9 is arranged between the two support plates, the heights and the widths of the two movable cavities in the movable part 1 are both matched with those of the two support plates of the fixed part 2, one ends of the two support plates of the movable part 1 are embedded into the movable cavity of the movable part and can be tightly clamped with the movable part, and the movable part can move along the movable cavity under the action of external force; the connection of the movable part 1 and the fixed part 2 can adopt the connection mode of the existing common steel support movable head, and the length adjustment can be carried out by displacement in the use process. The other end of the movable part 1 is provided with a connecting plate 4 fixedly connected with a pipe section 3 of a steel support system, one end of the movable part 1, which is far away from the fixed part 2, is provided with a bearing plate 5, a plurality of inclined supporting plates 11 are arranged between the movable part 1 and the bearing plate 5, an axial jack placing area 6 is formed between the adjacent inclined supporting plates 11 at two sides of the movable part 1, and a jack balance support 7 is arranged in each axial jack placing area 6.
In the embodiment, as shown in fig. 1 and 2, the jack balance support 7 is composed of two parallel horizontal support rods, the two horizontal support rods are vertically welded on the same straight line at the lower part of the axial jack placing area 6, the distance between the two horizontal support rods is greater than 10cm and smaller than the axial length of the axial jack 8, the horizontal extension length of the two horizontal support rods is greater than the diameter of the axial jack 8, and a stopper 10 is arranged at the outer end of each horizontal support rod, as shown in fig. 3, after the axial jack 8 is placed in place, the jack balance support 7 can horizontally support the axial jack 8.
The utility model discloses during the specific use, as shown in fig. 3, weld connecting plate 4 of steel shotcrete loose head fixed part 2 with the pipe section 3 of steel shotcrete system earlier, then weld bearing plate 5 and the foundation ditch steel purlin of steel shotcrete loose head movable part 1, when the steel shotcrete applys axial prestressing force, hoist jack with the crane and put in the axial jack of propping up the loose head and lay district 6, then as shown in fig. 3, axial jack 8 is horizontally arranged on jack balanced support 7, support axial jack 8 bottom through axial jack balanced support 7, when carrying out the thrust augmentation, axial jack 7 can not unsettled, can keep the horizontality always, make the top surface of jack and the fine close adhesion of steel shotcrete, avoided appearing the slip of jack, cause the jack to let out the power and produce the potential safety hazard; the problem that the stress area is reduced due to the fact that the jack cannot be in close contact with the steel support is also avoided, after the steel support is pressurized to a design value, the prestress of the steel support is reduced, the pre-axial force of the steel support is insufficient, and the influence on the stability of a foundation pit is avoided; after the axial jack is pressurized, a wedge-shaped steel block 12 is driven into a plug iron position 9 between the end part of the steel pipe support and the steel support piston head so as to maintain the axial prestress of the steel support.
To sum up, for the utility model discloses an embodiment of listing, nevertheless the utility model discloses not only be limited to above-mentioned embodiment, as long as reach with any same or similar means the technical effect of the utility model, all should belong to the scope of the protection of the utility model.
Claims (4)
1. The utility model provides a steel shotcrete head of living with jack balance support, includes movable part (1) and fixed part (2), be equipped with the removal chamber in movable part (1), the removal intracavity of one of them one end embedding movable part (1) of fixed part (2) to can remove its characterized in that at the removal intracavity under the effect of external force: a connecting plate (4) fixedly connected with a pipe section (3) of the steel support system is arranged at the other end of the movable part, a stopper iron position (9) is arranged at the part of the fixed part (2) embedded into the movable part (1), a bearing plate (5) is arranged at one end of the movable part (1) far away from the fixed part (2), axial jack placing areas (6) are respectively arranged at two sides of the movable part (1), and a jack balance support (7) is arranged in each axial jack placing area (6); the jack balance support (7) comprises at least two parallel horizontal supporting rods, the at least two horizontal supporting rods are vertically welded on the same straight line at the lower part of the axial jack placing area (6), and the axial jack (8) is horizontally supported after the axial jack (8) is placed in place.
2. The steel support swivel head with the jack balance bracket of claim 1, wherein: a plurality of inclined supporting plates (11) are arranged between the movable part (1) and the bearing plate (5), and the axial jack placing area (6) is arranged between the adjacent inclined supporting plates (11) on the two sides of the movable part (1).
3. The steel support swivel head with the jack balance bracket of claim 1, wherein: the jack balance support (7) is composed of two horizontal support rods, the distance between the two horizontal support rods is larger than 10cm and smaller than the axial length of the axial jack (8), the horizontal extension length of the two horizontal support rods is larger than the diameter of the axial jack (8), and a stop block (10) is arranged at the outer end of each horizontal support rod.
4. The steel support swivel head with the jack balance bracket of claim 1, wherein: the fixing part (2) consists of two square supporting plates, and a gap serving as a stopper iron position (9) is arranged between the two supporting plates; the corresponding removal chamber that sets up in movable part (1) divide into two, and the cavity height and the width in two removal chambers all with two backup pads phase-matches of fixed part (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020382519.1U CN211948467U (en) | 2020-03-24 | 2020-03-24 | Steel support loose head with jack balance support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020382519.1U CN211948467U (en) | 2020-03-24 | 2020-03-24 | Steel support loose head with jack balance support |
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| Publication Number | Publication Date |
|---|---|
| CN211948467U true CN211948467U (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020382519.1U Active CN211948467U (en) | 2020-03-24 | 2020-03-24 | Steel support loose head with jack balance support |
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| CN (1) | CN211948467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250788A (en) * | 2021-12-02 | 2022-03-29 | 江苏华东地质建设集团有限公司 | Assembly type square and rectangular tubular steel supporting beam system for foundation pit supporting |
-
2020
- 2020-03-24 CN CN202020382519.1U patent/CN211948467U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250788A (en) * | 2021-12-02 | 2022-03-29 | 江苏华东地质建设集团有限公司 | Assembly type square and rectangular tubular steel supporting beam system for foundation pit supporting |
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