Assembly type steel support rapid assembly and disassembly inclined strut support device

Abstract

The utility model belongs to the technical field of underground deep foundation pit construction, and particularly relates to an assembly type steel support rapid assembly and disassembly diagonal bracing support device which comprises a mother board, a steel support, a diagonal bracing support and a steel support. The bottom of the daughter board is detachably connected with the mother board; the inclined support is fixedly connected to the top of the daughter board, and the inclined support is used for being connected with the bottom end of a steel support; a mother board groove is formed in the top of the mother board, a daughter board protrusion is spliced in the mother board groove, the daughter board protrusion is arranged at the bottom of the daughter board, and the edges of the mother board and the daughter board are fixed after the mother board and the daughter board are spliced. The concave-convex effective mortises and tenons of the primary and secondary connecting plates are adopted, so that the inclined support is safe, simple and convenient to mount and demount, high in joint surface integrating degree, good in stability, low in material loss and high in work efficiency, and the defects existing in mounting and demounting of a traditional steel support inclined support can be effectively overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground deep foundation pit construction, in particular to an assembled steel support quick installation and removal diagonal brace support device. Background Art

[0002] With the development and construction of urban underground space, steel support is a common form of internal support structure during open excavation construction. At the corners of the foundation pit or between non-straight enclosures, diagonal bracing supports are required to adjust the angle to ensure that the two ends of the steel support are straightly supported by the enclosure.

[0003] In the existing technology, the inclined support is installed by welding and removed by gas welding cutting after being connected to the embedded steel plate. However, the connection between the inclined support and the embedded steel plate is inconvenient and the installation efficiency is low, resulting in a greater safety hazard during high-altitude operations. Therefore, there is an urgent need for an assembled steel support quick installation and disassembly inclined support device to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide an assembled steel support quick installation and removal diagonal support device to solve the above problems.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] An assembled steel support quick installation and removal diagonal support device, comprising:

[0007] A motherboard, the bottom end of which is anchored in the underground continuous wall;

[0008] A daughter board, the bottom of which is detachably connected to the mother board;

[0009] An oblique support, fixed to the top of the sub-plate, the oblique support being used to connect to the bottom end of the steel support;

[0010] A motherboard groove is provided on the top of the motherboard, a daughterboard protrusion is spliced ​​in the motherboard groove, and the daughterboard protrusion is opened on the bottom of the daughterboard. The motherboard and the daughterboard are fixed at their edges after splicing.

[0011] According to the above-mentioned assembled steel support quick installation and disassembly diagonal brace support device, the edge of the motherboard groove of the motherboard forms a motherboard step surface, and the motherboard step surface is spliced ​​in the sub-board step groove formed by the edge of the sub-board protrusion, the sub-board protrusion is fixed to the motherboard groove, and the motherboard step surface is fixed to the sub-board step groove.

[0012] According to the above-mentioned assembled steel support quick installation and disassembly diagonal brace support device, a number of motherboard bolt holes are provided on the motherboard groove and the motherboard stepped surface, and the motherboard bolt holes are correspondingly provided with sub-board bolt holes, and the sub-board bolt holes are provided on the sub-board protrusion and the sub-board stepped groove; high-strength bolts pass through the corresponding sub-board bolt holes and the motherboard bolt holes to fix the motherboard to the sub-board.

[0013] According to the above-mentioned assembled steel support quick installation and disassembly diagonal brace support device, a plurality of anchor bars arranged in a matrix are fixedly connected to the bottom surface of the mother plate groove, and the anchor bars are anchored in the underground continuous wall.

[0014] According to the above-mentioned assembled steel support quick installation and disassembly diagonal brace support device, one end of several anchor bars away from the mother plate is fixedly connected to an embedded steel plate, and the embedded steel plate is embedded in the underground continuous wall and fixed to the underground continuous wall.

[0015] According to the above-mentioned assembled steel support quick installation and disassembly diagonal support device, the cross-section of the diagonal support is a right-angled isosceles triangle structure, the oblique side of the oblique support is fixedly connected to the top of the sub-plate, and the plane where one of the right-angled sides of the oblique support is located is used to connect with the bottom end of the steel support.

[0016] According to the above-mentioned assembled steel support quick installation and removal diagonal brace support device, a plurality of stiffening ribs arranged at equal intervals are fixed to the bottom of the stepped surface of the mother plate.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects:

[0018] During the construction of the underground continuous wall, the motherboard is anchored within the underground continuous wall, and the oblique support is fixed to the sub-board. After the underground continuous wall is constructed, the sub-board protrusion of the sub-board is inserted into the motherboard groove provided at the top of the motherboard. The motherboard and the sub-board are then fixed to complete the installation of the oblique support. By using the effective mortise and tenon joints of the mother-child connecting plate, this device makes the installation and removal of the oblique support safe and simple, with a high degree of fit of the joint surface, good stability, low material loss, and high work efficiency, which can effectively solve the drawbacks of the traditional steel support oblique support installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work:

[0020] Figure 1This is a schematic diagram of the motherboard structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the sub-board structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the motherboard and daughterboard after splicing;

[0023] Among them, 1. Mother plate; 2. Mother plate groove; 3. Anchor bar; 4. Embedded steel plate; 5. Stiffening rib; 6. Oblique support; 7. Sub-plate; 8. Sub-plate stepped groove; 9. Sub-plate bolt hole; 10. Mother plate bolt hole; 11. Mother plate stepped surface; 12. Sub-plate protrusion; 13. Steel support. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] Reference Figures 1 to 3 The utility model discloses an assembled steel support quick installation and removal diagonal support device, comprising:

[0027] Motherboard 1, the bottom end of the motherboard 1 is anchored in the underground continuous wall;

[0028] The daughter board 7 is detachably connected to the mother board 1 at the bottom;

[0029] The oblique support 6 is fixed to the top of the sub-plate 7 and is used to connect to the bottom end of the steel support 13;

[0030] A motherboard groove 2 is provided on the top of the motherboard 1, and a daughterboard protrusion 12 is spliced ​​in the motherboard groove 2. The daughterboard protrusion 12 is opened at the bottom of the daughterboard 7. The edges of the motherboard 1 and the daughterboard 7 are fixed after splicing.

[0031] During use, during the construction of the underground continuous wall, the motherboard 1 is anchored in the underground continuous wall, and at the same time, the oblique support 6 is fixed to the sub-board 7. After the construction of the underground continuous wall is completed, the sub-board protrusion 12 of the sub-board 7 is inserted into the motherboard groove 2 provided on the top of the motherboard 1, and then the motherboard 1 and the sub-board 7 are fixed to complete the installation of the oblique support 6. By adopting the effective mortise and tenon joints of the mother-child connecting plate, the device makes the installation and removal of the oblique support 6 safe and simple, with high degree of fit of the joint surface, good stability, low material loss, and high work efficiency, which can effectively solve the disadvantages of the traditional steel support oblique support installation.

[0032] As an optional embodiment, the edge of the motherboard groove 2 of the motherboard 1 forms a motherboard step surface 11, and the motherboard step surface 11 is spliced ​​into the daughterboard step groove 8 formed at the edge of the daughterboard protrusion 12. The daughterboard protrusion 12 is fixed to the motherboard groove 2, and the motherboard step surface 11 is fixed to the daughterboard step groove 8.

[0033] As an optional embodiment, a number of motherboard bolt holes 10 are provided on the motherboard groove 2 and the motherboard stepped surface 11, and the motherboard bolt holes 10 are correspondingly provided with sub-board bolt holes 9, and the sub-board bolt holes 9 are provided through the sub-board protrusion 12 and the sub-board stepped groove 8; high-strength bolts pass through the corresponding sub-board bolt holes 9 and motherboard bolt holes 10 to fix the motherboard 1 and the sub-board 7.

[0034] As an optional embodiment, a plurality of anchoring bars 3 arranged in a matrix are fixedly connected to the bottom surface of the motherboard groove 2, and the anchoring bars 3 are anchored in the underground continuous wall.

[0035] As an optional embodiment, one end of the plurality of anchor bars 3 away from the motherboard 1 is fixedly connected to an embedded steel plate 4, and the embedded steel plate 4 is embedded in the underground continuous wall and fixed to the underground continuous wall.

[0036] As an optional embodiment, the cross-section of the inclined support 6 is a right-angled isosceles triangle structure, the hypotenuse of the inclined support 6 is fixed to the top of the sub-plate 7, and the plane where one of the right-angled sides of the inclined support 6 is located is used to connect to the bottom end of the steel support 13.

[0037] As an optional embodiment, a plurality of stiffening ribs 5 arranged at equal intervals are fixed to the bottom of the motherboard stepped surface 11 .

[0038] The main construction steps of this device are as follows:

[0039] During the excavation construction phase, find the location of the embedded motherboard 1;

[0040] During the construction of the underground continuous wall reinforcement cage, the mother plate 1 is pre-embedded in the corresponding position of the underground continuous wall steel support;

[0041] After the underground continuous wall is poured, the sub-slab 7 and the main slab 1 are fixed with high-strength bolts;

[0042] The edge of the oblique support 6 is welded with a steel bracket, which plays the role of edge limiter to prevent the steel support 13 from sliding excessively;

[0043] Install the steel support 13, which is placed on the inclined support 6 and fixed using an anti-falling device.

[0044] Currently, there are two main types of prefabricated oblique supports 6, corresponding to the two types of steel supports 13 of φ609 and φ800 respectively.

[0045] When corresponding to the φ609 steel support 13, the motherboard 1 and the sub-plate 7 use 1000×1000×20mm steel plates, and 18 φ25×500mm threaded steel bars are embedded in the back of the motherboard 1 as anchor bars 3, which are anchored into the inside of the ground wall; 12 φ25mm connectors are embedded in the upper and lower rows of the motherboard 1 as motherboard bolt holes 10, and the connectors are welded and fixed to the motherboard 1 and flush with the connection surface, and then connected to the sub-plate 7; φ25mm sub-plate bolt holes 9 are opened in the sub-plate 7 corresponding to the position where the connector is installed on the motherboard 1; the stiffening rib 5 is reinforced with 20mm thick ribs; the sub-plate 7 is fixed to the motherboard 1 with φ25mm high-strength bolts, and the bottom of the steel support 13 is placed on the steel bracket.

[0046] When corresponding to the φ800 steel support 13, the motherboard 1 and the sub-plate 7 use 1300×1000×20mm steel plates, and 24 φ25×500mm threaded steel bars are embedded in the back of the motherboard 1 as anchor bars 3 and anchored into the inside of the ground wall; 16 φ25mm connectors are embedded in the upper and lower rows of the motherboard 1 as motherboard bolt holes 10; the settings of other parts are the same as those when corresponding to the φ609 steel support 13.

[0047] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0048] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A prefabricated steel support quick installation and removal diagonal support device, characterized in that: include: A motherboard (1), the bottom end of which is anchored in the underground continuous wall; A daughter board (7), the bottom of which is detachably connected to the mother board (1); An oblique support (6) is fixed to the top of the sub-plate (7), and the oblique support (6) is used to connect with the bottom end of the steel support (13); A motherboard groove (2) is provided on the top of the motherboard (1), a sub-board protrusion (12) is spliced ​​in the motherboard groove (2), and the sub-board protrusion (12) is opened at the bottom of the sub-board (7). The motherboard (1) and the sub-board (7) are fixed at their edges after being spliced.

2. The assembly-type steel support quick installation and removal diagonal brace support device according to claim 1, characterized in that: The edge of the motherboard groove (2) of the motherboard (1) forms a motherboard stepped surface (11), and the motherboard stepped surface (11) is spliced ​​into the daughterboard stepped groove (8) formed at the edge of the daughterboard protrusion (12), the daughterboard protrusion (12) is fixed to the motherboard groove (2), and the motherboard stepped surface (11) is fixed to the daughterboard stepped groove (8).

3. The assembly-type steel support quick installation and removal diagonal brace support device according to claim 2, characterized in that: A plurality of through-set motherboard bolt holes (10) are provided on the motherboard groove (2) and the motherboard stepped surface (11); the motherboard bolt holes (10) are correspondingly provided with sub-board bolt holes (9); the sub-board bolt holes (9) are through-set on the sub-board protrusion (12) and the sub-board stepped groove (8); high-strength bolts pass through the corresponding sub-board bolt holes (9) and the motherboard bolt holes (10) to fix the motherboard (1) and the sub-board (7).

4. The assembly-type steel support quick installation and removal diagonal brace support device according to claim 1, characterized in that: A plurality of anchoring bars (3) arranged in a matrix are fixedly connected to the bottom surface of the motherboard groove (2), and the anchoring bars (3) are anchored in the underground continuous wall.

5. The assembly type steel support quick installation and removal diagonal brace support device according to claim 4, characterized in that: One end of a plurality of the anchor bars (3) away from the mother plate (1) is fixedly connected to an embedded steel plate (4), and the embedded steel plate (4) is embedded in the underground continuous wall and fixed to the underground continuous wall.

6. The assembly-type steel support quick installation and removal diagonal brace support device according to claim 1, characterized in that: The cross section of the inclined support (6) is a right-angled isosceles triangle structure, the hypotenuse of the inclined support (6) is fixedly connected to the top of the sub-plate (7), and the plane where one of the right-angled sides of the inclined support (6) is located is used to connect with the bottom end of the steel support (13).

7. The assembly-type steel support quick installation and removal diagonal brace support device according to claim 2, characterized in that: A plurality of stiffening ribs (5) arranged at equal intervals are fixedly connected to the bottom of the mother plate stepped surface (11).

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