Extended service ground wall reinforcing structure for ultra-deep foundation pit supporting and construction method

Abstract

The invention relates to the technical field of overdue service ground wall reinforcing structures for ultra-deep foundation pit supporting and construction methods, in particular to an overdue service ground wall reinforcing structure for ultra-deep foundation pit supporting and a construction method. The overdue service ground wall reinforcing structure for ultra-deep foundation pit supporting comprises a reinforcing bottom wall, a base is arranged at the bottom of the reinforcing bottom wall, and telescopic grooves are formed in the bottoms of the two sides of the base; a first spring is arranged in the telescopic groove, the bottom of the first spring is connected with a shifting groove, a limiting groove is formed in the inner side of the bottom end of the shifting groove, and a roller is arranged at the bottom of the shifting groove; a sliding block is connected in the sliding groove in a sliding mode, the two sides of the sliding block extend out of the sliding groove, and the two sides of the sliding block are connected with a fixed bottom plate; the overdue service ground wall reinforcing structure for supporting the ultra-deep foundation pit and the construction method have the beneficial effects that the reinforcing structure is firstly placed on the side of the ground wall of the foundation pit, the inner side surfaces of the reinforcing bottom wall and the reinforcing top wall are tightly attached to the ground wall, and then the rotary knob is screwed according to the height of the ground wall.

Description

Technical Field

[0001] The present invention relates to the technical field of an over-service ground wall reinforcement structure and a construction method for ultra-deep foundation pit support, and in particular to an over-service ground wall reinforcement structure and a construction method for ultra-deep foundation pit support. Background Art

[0002] When the ultra-deep foundation pit support structure exceeds its service life, it needs to be reinforced to ensure construction safety. According to the requirements of the "Technical Specifications for Deep Foundation Pit Support in Shenzhen" (SJG05-96), deep foundation pit support structures are usually designed as temporary structures with a service life of no more than one year. However, in actual use, many deep foundation pit support structures have a service life of more than one year, which requires some reinforcement measures to ensure safety.

[0003] In the prior art, when reinforcing the over-service ground wall for supporting the ultra-deep foundation pit, a hole is usually opened in the wall, and then one end of the support rod is fixed to the wall by expansion screws or fastening screws, so that the support rod reinforces and supports the wall.

[0004] However, in this installation method, the support rod can only reinforce part of the wall, and the reinforcement of the wall is not comprehensive. The support cannot be fine-tuned when the support rod is installed, and the support rod will inevitably have position deviation during installation. Summary of the invention

[0005] The object of the present invention is to provide an over-service ground wall reinforcement structure and a construction method for ultra-deep foundation pit support, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a reinforced bottom wall, a base is arranged at the bottom of the reinforced bottom wall, telescopic grooves are provided at the bottom of both sides of the base, a first spring is provided in the telescopic groove, the bottom of the first spring is connected to the toggle groove, a limiting groove is provided on the inner side of the bottom end of the toggle groove, and a roller is provided at the bottom of the toggle groove; and a sliding groove, a sliding block is slidably connected in the sliding groove, both sides of the sliding block extend from the sliding groove, and both sides of the sliding block are connected to the fixed bottom plate.

[0007] Preferably, a telescopic groove is opened in the middle of the top of the reinforced bottom wall, a lifting column is arranged in the telescopic groove, the top of the lifting column is connected to the reinforced top wall, and a knob is arranged on the outside of the telescopic groove of the reinforced bottom wall, a rotating shaft is inserted at the bottom of the knob, the rotating shaft is inserted in the telescopic, a gear is arranged on the rotating shaft, and teeth are arranged on one side of the lifting column, and turning the knob can make the gear and the teeth core engage, so that the lifting column drives the reinforced top wall to lift.

[0008] Preferably, a plurality of groups of auxiliary support columns are connected between the reinforced top wall and the reinforced bottom wall at the same time. The auxiliary support columns provide auxiliary support to the reinforced top wall to prevent the reinforced top wall from tilting. Screw holes are provided on the outer sides of the auxiliary support columns on both sides and on the outer side of the reinforced bottom wall. Inserting fixing bolts into the screw holes aligned with the auxiliary support columns and the reinforced bottom wall can fix the support of the auxiliary support columns to the reinforced top wall.

[0009] Preferably, the reinforced bottom wall is provided with a toggle groove on the side of the telescopic groove, and the outer side of the telescopic block is connected to a toggle plate, which extends from the toggle groove. By toggling the toggle plate downward, the telescopic block can be lowered so that the limit groove on the inner side of the telescopic block is parallel to the sliding groove.

[0010] Preferably, the sliding block can slide in the sliding groove, so that the sliding block is inserted into the limiting groove on the inner side of the telescopic block, the telescopic block is fixed, and the roller set at the bottom of the telescopic block is held on the ground, so that the reinforced bottom wall can slide on the ground.

[0011] Preferably, the top of the toggle plate is connected to multiple groups of second springs, the top of the second spring is connected to a pressure plate, the inner side of the pressure plate is inserted in the limiting groove, a fixing column is provided on the top of the pressure plate, a card slot is provided in the middle of the bottom of the sliding block, and a fixing groove is provided on the top of the card slot. The pressure plate can use the tension of the toggle plate to make the fixing column on the inner side of the pressure plate inserted into the fixing groove at the bottom of the sliding block, thereby fixing the sliding of the sliding block.

[0012] Preferably, both sides of the sliding block extend from the sliding groove, and both sides of the sliding groove are connected to a fixed base plate, on which a plurality of groups of threaded holes are provided, and screws are nailed into the threaded holes so that the sliding groove can fix the reinforced bottom wall.

[0013] Preferably, the outer surface of the reinforced top wall is provided with a hinge shaft, the hinge shaft is hingedly connected to the telescopic diagonal brace, the bottom of the telescopic diagonal brace is connected to the diagonal brace, and the telescopic diagonal brace can be extended and retracted in the diagonal brace according to the height of the reinforced top wall, so that the fixed foot at the bottom of the diagonal brace is always in contact with the ground, and the telescopic diagonal brace, the diagonal brace and the reinforced bottom wall and the reinforced top wall are always kept at a 45 degree angle. 0 Angle.

[0014] A construction method for an over-service ground wall reinforcement structure for ultra-deep foundation pit support, comprising the following steps:

[0015] Step 1: fine-tuning, by lifting the two feet of the bottom base of the reinforced bottom wall, then pulling the toggle plate and pressing the pressure plate on the top of the toggle plate, so that the toggle plate drives the roller at the bottom of the telescopic block in the telescopic slot to extend from the bottom of the telescopic slot, then pulling the sliding block to slide in the sliding slot, so that the sliding block is inserted into the limiting slot on the inner side of the telescopic block, and the telescopic block is fixed, and at the same time, the pressure on the pressure plate is released, and the second spring rebounds the pressure plate upward through tension, so that the fixed column connected to the inner side of the pressure plate is inserted into the fixed slot at the bottom of the sliding block, and the sliding of the sliding block is fixed, and then the reinforced bottom wall is pushed to make the roller drive the reinforced bottom wall to move, and the reinforcement position is fine-tuned;

[0016] Step 2: Fixing, by pressing the pressure plate to make the fixed column on the inner side of the pressure plate disengage from the pressure plate, and then toggle the sliding block to make the sliding block disengage from the limit slot, canceling the limit on the telescopic block, and the first spring drives the roller at the bottom of the telescopic block to retract into the telescopic slot through the contraction force, and then screws are nailed into the threaded holes opened on the connected rollers on both sides of the sliding slot, so that the reinforced bottom wall is fixed to one side of the ground wall through the sliding block, and finally, by pulling the telescopic diagonal brace, the telescopic diagonal brace is extended and retracted in the diagonal brace according to the telescopic height of the reinforced top wall, and then it is swung through the hinge shaft connected to the top of the telescopic diagonal brace, so that the angle between the telescopic diagonal brace, the diagonal brace and the reinforced bottom wall and the reinforced top wall is maintained, and the fixed foot at the bottom of the diagonal brace is in contact with the ground, and then screws are nailed into the threaded holes on the fixed foot to fix the swing of the diagonal brace.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention proposes an over-service ground wall reinforcement structure and construction method for ultra-deep foundation pit support. The reinforcement structure is first placed on the side of the foundation pit ground wall, and the inner surfaces of the reinforced bottom wall and the reinforced top wall are made close to the ground wall. Then, the knob is screwed according to the height of the ground wall, so that the rotating shaft connected to the inner side of the knob drives the gear to rotate, so that the gear and the tooth inner core on the side of the lifting column drive the reinforcement top wall to expand and contract according to the height of the ground wall. After the height adjustment of the reinforcement top wall is completed, the fixing bolts are inserted into the screw holes on the outer sides of the auxiliary support columns on both sides that coincide with the outer side of the reinforced bottom wall to fix the expansion and contraction of the reinforcement top wall, prevent the meshing of the gear and the tooth from loosening, and make the auxiliary support column drive the reinforcement top wall to descend; when the reinforcement is added, the gear and the tooth inner core are rotated to rotate, so that the gear and the tooth inner core are rotated to rotate, so that the gear and the tooth inner core are rotated to rotate, so that the auxiliary support column drives the reinforcement top wall to extend and contract according to the height of the ground wall. After the top wall is fixed, if the reinforcement position deviates, the two feet of the bottom base of the reinforced bottom wall can be lifted, and then the toggle plate can be pulled and the pressure plate on the top of the toggle plate can be pressed to make the toggle plate drive the roller at the bottom of the telescopic block in the telescopic groove to extend from the bottom of the telescopic groove, and then the sliding block can be pulled to slide in the sliding groove to make the sliding block inserted into the limiting groove on the inside of the telescopic block to fix the telescopic block, and at the same time, the pressure on the pressure plate can be released, and the second spring can rebound the pressure plate upward through tension, so that the fixed column connected to the inside of the pressure plate is inserted into the fixed groove at the bottom of the sliding block to fix the sliding of the sliding block, and then the reinforced bottom wall can be pushed to make the roller drive the reinforced bottom wall to move, and the reinforcement position can be fine-tuned. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0022] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the sliding block of the present invention.

[0024] In the figure: reinforced bottom wall 1, base 2, lifting column 3, auxiliary support column 4, reinforced top wall 5, screw hole 6, fixing bolt 7, hinge shaft 8, telescopic diagonal brace 9, diagonal brace 10, fixed foot 11, telescopic slot 12, first spring 13, telescopic block 14, toggle slot 15, limit slot 16, sliding slot 17, sliding block 18, toggle plate 19, second spring 20, pressure plate 21, fixing slot 22, roller 23, fixed bottom plate 24, knob 25, gear 26, teeth 27, fixed column 28. DETAILED DESCRIPTION

[0025] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 5 The present invention provides a technical solution: a reinforced bottom wall 1, a base 2 is arranged at the bottom of the reinforced bottom wall 1, telescopic grooves 12 are provided at the bottom of both sides of the base 2, a first spring 13 is provided in the telescopic groove 12, the bottom of the first spring 13 is connected to a toggle groove 15, a limiting groove 16 is provided on the inner side of the bottom end of the toggle groove 15, and a roller 23 is provided at the bottom of the toggle groove 15; and a sliding groove 17, a sliding block 18 is slidably connected in the sliding groove 17, and both sides of the sliding block 18 extend from the sliding groove 17, and the sliding The two sides of the block 18 are connected to the fixed bottom plate 24; a telescopic groove is provided in the middle of the top of the reinforced bottom wall 1, a lifting column 3 is provided in the telescopic groove, the top of the lifting column 3 is connected to the reinforced top wall 5, and the reinforced bottom wall 1 is provided with a knob 25 on the outside of the telescopic groove, a rotating shaft is plugged into the bottom of the knob 25, and the rotating shaft is plugged into the telescopic center, a gear 26 is provided on the rotating shaft, and a tooth 27 is provided on one side of the lifting column 3. Screwing the knob 25 can make the gear 26 and the tooth 27 interlock, so that the lifting column 3 drives the reinforced top wall 5 to lift;

[0027] A plurality of auxiliary support columns 4 are connected between the reinforced top wall 5 and the reinforced bottom wall 1 at the same time. The auxiliary support columns 4 provide auxiliary support to the reinforced top wall 5 to prevent the reinforced top wall 5 from tilting. Screw holes 6 are provided on the outer sides of the auxiliary support columns 4 on both sides and on the outer side of the reinforced bottom wall 1. Inserting fixing bolts 7 into the screw holes 6 aligned with the auxiliary support columns 4 and the reinforced bottom wall 1 can fix the support of the auxiliary support columns 4 to the reinforced top wall 5. The reinforced bottom wall 1 is provided with a toggle groove 15 on the side of the telescopic groove 12. A toggle plate 19 is connected to the outer side of the telescopic block 14. The toggle plate 19 extends out from the toggle groove 15. By toggling the toggle plate 19 downward, the telescopic block 14 can be lowered so that the limit groove 16 on the inner side of the telescopic block 14 is parallel to the sliding groove 17. The sliding block 18 can The sliding block 18 can slide in the sliding groove 17, so that the sliding block 18 is inserted into the limiting groove 16 on the inner side of the telescopic block 14, and the telescopic block 14 is fixed, so that the roller 23 set at the bottom of the telescopic block 14 is supported on the ground, so that the reinforced bottom wall 1 can slide on the ground; the top of the toggle plate 19 is connected to multiple groups of second springs 20, and the top of the second spring 20 is connected to the pressing plate 21, the inner side of the pressing plate 21 is inserted into the limiting groove 16, and the top of the pressing plate 21 is provided with a fixing column 28, and a card slot is provided in the middle of the bottom of the sliding block 18, and a fixing slot 22 is provided at the top of the card slot. The pressing plate 21 can make the fixing column 28 on the inner side of the pressing plate 21 inserted into the fixing slot 22 at the bottom of the sliding block 18 through the tension of the toggle plate 19, so as to fix the sliding of the sliding block 18;

[0028] The two sides of the sliding block 18 extend out from the sliding groove 17, and the two sides of the sliding groove 17 are connected to the fixed bottom plate 24. The fixed bottom plate 24 is provided with a plurality of threaded holes. Screws are nailed into the threaded holes so that the sliding groove 17 can fix the reinforced bottom wall 1; the outer surface of the reinforced top wall 5 is provided with a hinge shaft 8, and the hinge shaft 8 is hinged to the telescopic diagonal brace 9. The bottom of the telescopic diagonal brace 9 is connected to the diagonal brace 10. The telescopic diagonal brace 9 can be extended and retracted in the diagonal brace 10 according to the height of the reinforced top wall 5, so that the fixed foot 11 at the bottom of the diagonal brace 10 is always in contact with the ground, and the telescopic diagonal brace 9, the diagonal brace 10 and the reinforced bottom wall 1 and the reinforced top wall 5 are always kept at 45 0 Angle.

[0029] In actual use, the reinforcement structure is first placed on the side of the foundation pit ground wall, and the inner surfaces of the reinforced bottom wall 1 and the reinforced top wall 5 are made close to the ground wall. Then, the knob 25 is screwed according to the height of the ground wall, so that the shaft connected to the inner side of the knob 25 drives the gear 26 to rotate, so that the gear 26 and the teeth 27 on the side of the lifting column 3 are interlocked, so that the lifting column 3 drives the reinforced top wall 5 to be extended and retracted according to the height of the ground wall. After the height adjustment of the reinforced top wall 5 is completed, the fixing bolts 7 are inserted into the screw holes 6 on the outer sides of the auxiliary support columns 4 on both sides that coincide with the outer side of the reinforced bottom wall 1, so as to fix the extension of the reinforced top wall 5. Prevent the meshing of the gear 26 and the teeth 27 from loosening, so that the auxiliary support column 4 drives the reinforced top wall 5 to descend; when the reinforced top wall 5 is fixed, if the reinforcement position deviates, the two feet of the bottom base 2 of the reinforced bottom wall 1 can be lifted, and then the toggle plate 19 can be pulled and the pressure plate 21 on the top of the toggle plate 19 can be pressed to make the toggle plate 19 drive the roller 23 at the bottom of the telescopic block 14 in the telescopic groove 12 to extend from the bottom of the telescopic groove 12, and then the sliding block 18 can be pulled to slide in the sliding groove 17, so that the sliding block 18 is inserted into the limiting groove 16 on the inner side of the telescopic block 14, and the telescopic The telescopic block 14 is telescopically fixed, and the pressure on the pressure plate 21 is released at the same time. The second spring 20 rebounds the pressure plate 21 upward through tension, so that the fixed column 28 connected to the inner side of the pressure plate 21 is inserted into the fixed groove 22 at the bottom of the sliding block 18, and the sliding of the sliding block 18 is fixed. Then, by pushing the reinforced bottom wall 1, the roller 23 drives the reinforced bottom wall 1 to move, and the reinforcement position is fine-tuned; when the position adjustment is completed, the pressure plate 21 is pressed again, so that the fixed column 28 on the inner side of the pressure plate 21 is disengaged from the pressure plate 21, and then the sliding block 18 is moved to disengage the sliding block 18 from the limiting groove 16 , cancel the limit of the telescopic block 14, the first spring 13 drives the roller 23 at the bottom of the telescopic block 14 to retract into the telescopic groove 12 through the contraction force, and then screws are nailed into the threaded holes opened on the rollers 23 connected on both sides of the sliding groove 17, so that the reinforced bottom wall 1 is fixed to one side of the ground wall through the sliding block 18, and finally the telescopic diagonal brace 9 is pulled to make the telescopic diagonal brace 9 retract in the diagonal brace 10 according to the telescopic height of the reinforced top wall 5, and then the hinge shaft 8 connected to the top of the telescopic diagonal brace 9 is swung, so that the telescopic diagonal brace 9, the diagonal brace 10 and the reinforced bottom wall 1 and the reinforced top wall 5 maintain a distance of 45 0 The angle of the diagonal brace 10 is set, and the fixed foot 11 at the bottom of the diagonal brace 10 is in contact with the ground, and then screws are nailed into the threaded holes on the fixed foot 11 to fix the swing of the diagonal brace 10.

[0030] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. An over-service ground wall reinforcement structure for ultra-deep foundation pit support, characterized by: include: A reinforced bottom wall (1), wherein a base (2) is provided at the bottom of the reinforced bottom wall (1), telescopic grooves (12) are provided at the bottoms of both sides of the base (2), a first spring (13) is provided in the telescopic groove (12), the bottom of the first spring (13) is connected to a toggle groove (15), a limiting groove (16) is provided at the inner side of the bottom end of the toggle groove (15), and a roller (23) is provided at the bottom of the toggle groove (15); and The sliding groove (17) is slidably connected to a sliding block (18), two sides of the sliding block (18) extend out of the sliding groove (17), and two sides of the sliding block (18) are connected to a fixed bottom plate (24).

2. The over-service ground wall reinforcement structure for ultra-deep foundation pit support according to claim 1 is characterized by: A telescopic groove is provided in the middle of the top of the reinforced bottom wall (1), a lifting column (3) is provided in the telescopic groove, the top of the lifting column (3) is connected to the reinforced top wall (5), a knob (25) is provided on the outer side of the telescopic groove of the reinforced bottom wall (1), a rotating shaft is inserted at the bottom of the knob (25), the rotating shaft is inserted in the telescopic groove, a gear (26) is provided on the rotating shaft, and teeth (27) are provided on one side of the lifting column (3), and screwing the knob (25) can make the gear (26) and the teeth (27) interlock, so that the lifting column (3) drives the reinforced top wall (5) to lift.

3. The over-service ground wall reinforcement structure for ultra-deep foundation pit support according to claim 2 is characterized by: A plurality of groups of auxiliary support columns (4) are simultaneously connected between the reinforced top wall (5) and the reinforced bottom wall (1). The auxiliary support columns (4) provide auxiliary support to the reinforced top wall (5) to prevent the reinforced top wall (5) from tilting. Screw holes (6) are provided on the outer sides of the auxiliary support columns (4) on both sides and on the outer side of the reinforced bottom wall (1). By inserting fixing bolts (7) into the screw holes (6) aligned with the auxiliary support columns (4) and the reinforced bottom wall (1), the auxiliary support columns (4) can fix the support to the reinforced top wall (5).

4. The over-service ground wall reinforcement structure for ultra-deep foundation pit support according to claim 3 is characterized by: The reinforced bottom wall (1) is provided with a toggle groove (15) on the side of the telescopic groove (12); the outer side of the telescopic block (14) is connected to a toggle plate (19); the toggle plate (19) extends from the toggle groove (15); by toggling the toggle plate (19) downward, the telescopic block (14) can be lowered, so that the limiting groove (16) on the inner side of the telescopic block (14) is parallel to the sliding groove (17).

5. The over-service ground wall reinforcement structure for ultra-deep foundation pit support according to claim 4 is characterized by: The sliding block (18) can slide in the sliding groove (17), so that the sliding block (18) is inserted into the limiting groove (16) on the inner side of the telescopic block (14), the telescopic movement of the telescopic block (14) is fixed, and the roller (23) arranged at the bottom of the telescopic block (14) is supported on the ground, so that the reinforced bottom wall (1) can slide on the ground.

6. The over-service ground wall reinforcement structure for ultra-deep foundation pit support according to claim 5 is characterized by: The top of the toggle plate (19) is connected to a plurality of groups of second springs (20), the top of the second springs (20) is connected to a pressure plate (21), the inner side of the pressure plate (21) is inserted into the limiting groove (16), a fixing column (28) is arranged on the top of the pressure plate (21), a slot is provided in the middle of the bottom of the sliding block (18), a fixing groove (22) is provided on the top of the slot, and the pressure plate (21) can, through the tension of the toggle plate (19), make the fixing column (28) on the inner side of the pressure plate (21) inserted into the fixing groove (22) at the bottom of the sliding block (18), thereby fixing the sliding of the sliding block (18).

7. The over-service ground wall reinforcement structure for ultra-deep foundation pit support according to claim 6 is characterized by: The two sides of the sliding block (18) extend out from the sliding groove (17), and the two sides of the sliding groove (17) are connected to the fixed bottom plate (24). The fixed bottom plate (24) is provided with a plurality of groups of threaded holes. Screws are screwed into the threaded holes so that the sliding groove (17) can fix the reinforced bottom wall (1).

8. The over-service ground wall reinforcement structure for ultra-deep foundation pit support according to claim 7 is characterized by: The outer surface of the reinforced top wall (5) is provided with a hinge shaft (8), and a telescopic diagonal brace (9) is hingedly connected to the hinge shaft (8). The bottom of the telescopic diagonal brace (9) is connected to the diagonal brace (10). The telescopic diagonal brace (9) can be extended and retracted in the diagonal brace (10) according to the height of the reinforced top wall (5), so that the fixed foot (11) at the bottom of the diagonal brace (10) is always in contact with the ground, and the telescopic diagonal brace (9), the diagonal brace (10) and the reinforced bottom wall (1) and the reinforced top wall (5) are always kept at a 45° angle. 0 Angle.

9. A construction method for an over-service ground wall reinforcement structure for ultra-deep foundation pit support according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: fine-tuning, by lifting the two feet of the bottom base (2) of the reinforced bottom wall (1), then pulling the toggle plate (19) and pressing the pressure plate (21) on the top of the toggle plate (19), so that the toggle plate (19) drives the roller (23) at the bottom of the telescopic block (14) in the telescopic groove (12) to extend from the bottom of the telescopic groove (12), and then pulling the sliding block (18) to slide in the sliding groove (17), so that the sliding block (18) is inserted into the inner side of the telescopic block (14) In the limiting groove (16), the telescopic block (14) is fixed, and the pressure on the pressure plate (21) is released. The second spring (20) rebounds the pressure plate (21) upward through tension, so that the fixed column (28) connected to the inner side of the pressure plate (21) is inserted into the fixed groove (22) at the bottom of the sliding block (18), and the sliding of the sliding block (18) is fixed. Then, by pushing the reinforced bottom wall (1), the roller (23) drives the reinforced bottom wall (1) to move, and the reinforcement position is fine-tuned; Step 2: Fixing, by pressing the pressing plate (21), the fixing column (28) on the inner side of the pressing plate (21) is disengaged from the pressing plate (21), and then the sliding block (18) is moved to disengage the sliding block (18) from the limiting groove (16), thereby canceling the limiting of the telescopic block (14), and the first spring (13) drives the roller (23) at the bottom of the telescopic block (14) to shrink into the telescopic groove (12) through the contraction force, and then moves to the rollers connected on both sides of the sliding groove (17) Screws are screwed into the threaded holes on the top wall (23) to fix the reinforced bottom wall (1) to one side of the ground wall through the sliding block (18). Finally, the telescopic diagonal brace (9) is pulled to extend and retract in the diagonal brace (10) according to the extension and retraction height of the reinforced top wall (5). The telescopic diagonal brace (9) is then swung through the hinge shaft (8) connected to the top of the telescopic diagonal brace (9) to maintain a 45° angle between the telescopic diagonal brace (9), the diagonal brace (10) and the reinforced bottom wall (1) and the reinforced top wall (5). 0 The angle of the diagonal brace (10) is set, and the fixed foot (11) at the bottom of the diagonal brace (10) is brought into contact with the ground, and screws are then screwed into the threaded holes on the fixed foot (11) to fix the swing of the diagonal brace (10).

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