Axial force pre-applying device for steel support

Abstract

The utility model relates to the technical field of steel support preloading shafts, in particular to a steel support preloading axial force device which comprises a steel support preloading shaft body, a flange plate is fixedly installed at one end of a movable head of the steel support preloading shaft body, and two fixing bolts are installed on the surface of the flange plate in a screwed mode. The flange plate is fixedly provided with a connecting plate through two fixing bolts, and one side of the connecting plate is fixedly provided with an axial force meter; according to the utility model, the first-stage contact plate is manually rotated, the first-stage contact plate rotates to drive the first-stage force bearing arm to rotate, the first-stage force bearing arm drives the second-stage force bearing arm to rotate, the second-stage force bearing arm drives the second-stage contact plate to rotate, the second-stage contact plate is rotated at the same time, and the two positioning rods are respectively inserted into the two sliding holes, so that the first-stage contact plate and the second-stage contact plate are fixed. And the first-stage force bearing arm and the second-stage force bearing arm are positioned and fixed, so that the device can be attached to an enclosure steel plate in an included angle area, and the adaptability of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel support pre-axle force, in particular to a steel support pre-axle force device. Background Art

[0002] In engineering construction, it is usually necessary to dig deep foundation pits for the construction of pile foundations. During the excavation of the foundation pit, in order to prevent the soil layer around the foundation pit from falling, it is necessary to add enclosures around the foundation pit (such as underground continuous walls, steel sheet piles, etc.). The enclosures are subject to the lateral pressure of the surrounding soil and are prone to displacement and deformation. In order to prevent this from happening, it is necessary to use steel support pre-axles to exert a certain reaction force on the retaining structure, balance the lateral pressure of the soil, reduce the horizontal displacement of the retaining structure and the deformation of the foundation pit, and protect the surrounding buildings and underground facilities.

[0003] Chinese utility model patent: CN220888753U, discloses a steel support axial force meter fixing device, wherein an axial force meter is arranged between the end of a steel pipe and a steel purlin, an end plate is arranged on the side end face of the steel pipe end relative to the axial force meter, and a forced centering plate and a bearing plate are respectively connected at both ends of the axial force meter, and a first limiting hole and a second limiting hole matching the axial force meter are respectively arranged in the end faces of the forced centering plate and the bearing plate; the forced centering plate is opposite to the end plate and the diameter of the end portion on the fitting side is larger than the diameter of the axial force meter, and the forced centering plate and the end plate are connected by a connecting piece, and the bearing plate is opposite to the steel purlin and the diameter of the end portion on the fitting side is larger than the diameter of the axial force meter. The utility model can make the axial force meter expand its contact area accordingly under the action of its large diameter end through the forced centering plate and the bearing plate, so as to better contact with the end plate of the steel pipe end and the steel purlin or the steel plate embedded in the enclosure structure, thereby effectively avoiding the deformation of the steel plate at the contact position of the axial force meter after the axial prestress is applied.

[0004] However, the device still has some problems. For example, by forcibly aligning the centering disk and the bearing plate, the axial force gauge can expand its contact area accordingly under the action of its large diameter end, so as to better contact with the end plate of the steel pipe and the steel plate embedded in the enclosure structure by the steel purlin, thereby effectively avoiding the deformation of the steel plate at the contact position of the axial force gauge after the axial prestress is applied. In actual use, when the steel support shaft is fixedly installed, the stress points of the foundation pit to be supported are different, and the installation areas are also different. When the steel support is fixedly installed in the corner area of ​​the enclosure, the use of a flat bearing plate will not be able to fit well with the corner area, which leads to uneven stress points, small stress areas in some areas, and high stress intensity, resulting in deformation of the steel plate. There is a problem of poor adaptability of the device. Utility Model Content

[0005] The utility model aims to provide a steel support pre-axial force device to solve the problems raised in the above background technology.

[0006] The technical solution of the utility model is: a steel support pre-loaded axial force device, comprising a steel support pre-loaded axial body, a flange is fixedly installed at one end of the active head of the steel support pre-loaded axial body, two fixing bolts are screwed on the surface of the flange, a connecting plate is fixedly installed on the flange through the two fixing bolts, an axial force meter is fixedly installed on one side of the connecting plate, a mounting block is slidably installed on the inspection end of the axial force meter, and a fitting mechanism is fixedly installed on one side of the mounting block;

[0007] The bonding mechanism includes two clamping plates, one side of each of the clamping plates is provided with a primary mounting opening, and a primary reinforcing shaft is rotatably mounted in each of the two primary mounting openings, a secondary load-bearing arm is fixedly mounted on the surface of one of the primary reinforcing shafts, and a secondary contact plate is fixedly mounted on one end of the secondary load-bearing arm, and a primary load-bearing arm is fixedly mounted on the surface of the other primary reinforcing shaft, and a primary contact plate is fixedly mounted on one end of the primary load-bearing arm, a protective steel plate is bonded to the surface of the protective steel plate, and one side of the secondary contact plate is bonded to the surface of the protective steel plate, and a reinforcing component is fixedly mounted on one side of the mounting block.

[0008] Preferably, one end of the primary load-bearing arm is provided with a half tooth, and one end of the secondary load-bearing arm is provided with a half tooth, and the adjacent ends of the primary load-bearing arm and the secondary load-bearing arm are meshed.

[0009] Preferably, the reinforcement component includes a plurality of mounting ears, a rotating hole is opened on one side of the plurality of mounting ears, a secondary reinforcement shaft is rotatably mounted in the rotating hole, a gear is fixedly mounted on the surface of the secondary reinforcement shaft, one of the gears is meshed with the secondary load-bearing arm, and the other gear is meshed with the primary load-bearing arm.

[0010] Preferably, a merging opening is provided on the surface of the secondary contact plate, and a merging block is provided on the surface of the primary contact plate.

[0011] Preferably, two sliding holes are opened on one side of the splint, and positioning rods are slidably installed in the two sliding holes. A plurality of positioning holes are opened on one side of the primary load-bearing arm, and a plurality of positioning holes are opened on one side of the secondary load-bearing arm.

[0012] Preferably, a splicing groove is provided on one side of the mounting block, and the detection end of the axial force meter is fixedly mounted with the splicing block.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model manually rotates the primary contact plate, which drives the primary load-bearing arm to rotate, which drives the secondary load-bearing arm to rotate, which drives the secondary contact plate to rotate, and the secondary contact plates are rotated simultaneously, thereby adjusting the angle between the two load-bearing arms to be consistent with the angle between the foundation pit retaining steel plates that need to be fitted, and inserting two positioning rods into two sliding holes respectively to position and fix the primary load-bearing arm and the secondary load-bearing arm, so that the device can fit the retaining steel plates in the angle area, thereby enhancing the adaptability of the device.

[0015] 2. The utility model uses two primary reinforcement shafts to bear the load on the primary load-bearing arm and the secondary load-bearing arm respectively, and uses two secondary reinforcement shafts in conjunction with two gears to assist in bearing the load on the primary load-bearing arm and the secondary load-bearing arm, thereby improving the structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the central axis force gauge and its related structures of the utility model;

[0019] Figure 3 It is a schematic diagram of the cutaway structure of the mounting block in the utility model;

[0020] Figure 4 It is a schematic diagram of the relevant structure of the laminating mechanism in the utility model.

[0021] Description of reference numerals:

[0022] 1. Steel support pre-loaded shaft body; 2. Flange; 3. Fixing bolts; 4. Shaft force gauge; 5. Mounting block; 6. Enclosing steel plate; 7. Connecting plate; 8. Splicing groove; 9. Clamp; 10. Primary contact plate; 11. Splicing block; 12. Primary reinforced shaft; 13. Primary load-bearing arm; 14. Secondary contact plate; 15. Merging mouth; 16. Secondary load-bearing arm; 17. Merging block; 18. Positioning hole; 19. Positioning rod; 20. Mounting ear; 21. Secondary reinforced shaft; 22. Gear. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0024] Figure 1~Figure 4 It is the best embodiment of the utility model, and the following Figure 1~Figure 4 The utility model is further described.

[0025] like Figure 1~Figure 4 As shown, a steel support preload axial force device comprises a steel support preload axial body 1, a flange 2 is fixedly installed at one end of the movable head of the steel support preload axial body 1, two fixing bolts 3 are screwed on the surface of the flange 2, a connecting plate 7 is fixedly installed on the flange 2 through the two fixing bolts 3, an axial force meter 4 is fixedly installed on one side of the connecting plate 7, a mounting block 5 is slidably installed on the inspection end of the axial force meter 4, and a fitting mechanism is fixedly installed on one side of the mounting block 5;

[0026] The bonding mechanism includes two clamping plates 9, one side of each clamping plate 9 is provided with a primary installation opening, and a primary strengthening shaft 12 is rotatably installed in each of the two primary installation openings, a secondary load-bearing arm 16 is fixedly installed on the surface of one of the primary strengthening shafts 12, and a secondary contact plate 14 is fixedly installed on one end of the secondary load-bearing arm 16, and a primary load-bearing arm 13 is fixedly installed on the surface of the other primary strengthening shaft 12, and a primary contact plate 10 is fixedly installed on one end of the primary load-bearing arm 13, the surface of the primary contact plate 10 is bonded with a surrounding steel plate 6, and one side of the secondary contact plate 14 is bonded to the surface of the surrounding steel plate 6, and a strengthening component is fixedly installed on one side of the mounting block 5, and two secondary strengthening shafts 21 respectively bear force on the primary load-bearing arm 13 and the secondary load-bearing arm 16, and the primary strengthening shaft 12 and the secondary strengthening shaft 21 are made of high-strength steel, which can ensure that no deformation occurs when the pre-axial force is subjected to the maximum degree.

[0027] By means of the above structure, the steel support pre-axle body 1 is consistent with that used in the prior art, including existing structures such as the steel support body, hydraulic components, and active heads. The active heads are adjusted by the hydraulic components, so that the steel support body can effectively support the enclosure steel plate 6 in the foundation pit. The axial force meter 4 can detect the axial force, and its working principle is consistent with that in the above-mentioned reference document (publication number: CN220888753U), which will not be described in detail here. By plugging the axial force meter 4 into the mounting block 5, the fitting mechanism can achieve the fitting of the angle area, thereby avoiding damage to the enclosure steel plate 6 caused by uneven force.

[0028] Furthermore, one end of the primary load-bearing arm 13 is provided with a half tooth, and one end of the secondary load-bearing arm 16 is provided with a half tooth, and the adjacent ends of the primary load-bearing arm 13 and the secondary load-bearing arm 16 are meshed.

[0029] By means of the above structure, the first load-bearing arm 13 and the second load-bearing arm 16 are both provided with the same half teeth at their close ends, and the relative angle of the second load-bearing arm 16 can be adjusted while the first load-bearing arm 13 is adjusted through meshing.

[0030] Furthermore, the reinforcement component includes a plurality of mounting ears 20, a rotating hole is opened on one side of the plurality of mounting ears 20, a secondary reinforcement shaft 21 is rotatably installed in the rotating hole, and a gear 22 is fixedly installed on the surface of the secondary reinforcement shaft 21, one of the gears 22 is meshed with the secondary load-bearing arm 16, and the other gear 22 is meshed with the primary load-bearing arm 13.

[0031] By means of the above structure, the secondary reinforcement shaft 21 provides support force for the primary load-bearing arm 13 and the secondary load-bearing arm 16 respectively, so as to maintain the stability of their operation.

[0032] Furthermore, a merging port 15 is provided on the surface of the secondary contact plate 14 , and a merging block 17 is provided on the surface of the primary contact plate 10 .

[0033] With the above structure, the merging opening 15 is in the shape of a toothed opening and can be assembled with the merging block 17. When the primary load-bearing arm 13 and the secondary load-bearing arm 16 are perpendicular, the primary contact plate 10 and the secondary contact plate 14 can be assembled into one body so as to be used on a plane.

[0034] Furthermore, two sliding holes are opened on one side of the splint 9, and positioning rods 19 are slidably installed in the two sliding holes. A plurality of positioning holes 18 are opened on one side of the primary load-bearing arm 13, and a plurality of positioning holes 18 are opened on one side of the secondary load-bearing arm 16.

[0035] By means of the above structure, the number of positioning holes 18 can be increased or decreased according to actual conditions. The figure only shows the opening of five equally spaced positioning holes 18. In actual use, in order to ensure the adjustment accuracy and avoid angle mismatch, the number of positioning holes 18 can be increased and the spacing can be reduced.

[0036] Furthermore, a splicing groove 8 is provided on one side of the mounting block 5 , and a splicing block 11 is fixedly mounted on the detection end of the axial force meter 4 .

[0037] With the above structure, the splicing block 11 is hexagonal and fits into the splicing groove 8. The size of the splicing groove 8 is smaller than the detection end of the axial force meter 4. On the one hand, the detection end of the axial force meter 4 can be positioned, and on the other hand, the detection end of the axial force meter 4 can be limited.

[0038] Working principle: When the device is in use, first install one end of the steel support pre-loaded shaft body 1 on one side of the foundation pit enclosure, then insert the splicing block 11 on the output end of the axial force meter 4 body into the splicing groove 8 in the mounting block 5 to complete the splicing, and then manually rotate the primary contact plate 10 according to the angle of the corner steel plate of the foundation pit enclosure that needs to be pre-supported. When the primary contact plate 10 rotates, it drives the primary load-bearing arm 13 to rotate, and the rotation of the primary load-bearing arm 13 will drive the secondary load-bearing arm 16 to rotate, and the rotation of the secondary load-bearing arm 16 will drive the secondary contact plate 14 to rotate, so that the primary contact plate 10 and the secondary contact plate 14 rotate at the same time, thereby adjusting the angle between the primary load-bearing arm 13 and the secondary load-bearing arm 16 to make it fit the foundation that needs to be fitted. The angle of the pit enclosure steel plate 6 remains consistent. When adjusted to a suitable angle, the sliding hole is aligned with the positioning hole 18, and then the two positioning rods 19 are respectively inserted into the two sliding holes to position and fix the primary load-bearing arm 13 and the secondary load-bearing arm 16. After the fixation is completed, the steel support pre-loaded shaft body 1 is started to make its flexible end push the flange 2, the flange 2 drives the axial force gauge 4 to move, the axial force gauge 4 drives the mounting block 5 to move, the mounting block 5 drives the splint 9 to move, the splint 9 drives the primary load-bearing arm 13 and the secondary load-bearing arm 16 to move, and respectively drives the primary contact plate 10 and the secondary contact plate 14 to gradually approach the target enclosure steel plate 6, and apply axial force in a close fit, so that the device can fit the enclosure steel plate 6 in the angle area, thereby enhancing the adaptability of the device.

[0039] When axial force is applied, the first-level load-bearing arm 13 and the second-level load-bearing arm 16 are respectively supported by two first-level reinforcement shafts 12, and the first-level load-bearing arm 13 and the second-level load-bearing arm 16 are supported by two second-level reinforcement shafts 21 in cooperation with two gears 22, thereby improving their load-bearing strength.

[0040] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A steel support preload axial force device, comprising a steel support preload axial force body (1), characterized in that: A flange (2) is fixedly mounted on one end of the movable head of the steel support preloaded shaft body (1); two fixing bolts (3) are screwed on the surface of the flange (2); a connecting plate (7) is fixedly mounted on the flange (2) via the two fixing bolts (3); an axial force gauge (4) is fixedly mounted on one side of the connecting plate (7); a mounting block (5) is slidably mounted on the inspection end of the axial force gauge (4); a fitting mechanism is fixedly mounted on one side of the mounting block (5); The bonding mechanism comprises two clamping plates (9), one side of each of the two clamping plates (9) is provided with a primary mounting opening, and a primary reinforcing shaft (12) is rotatably mounted in each of the two primary mounting openings, a secondary load-bearing arm (16) is fixedly mounted on the surface of one of the primary reinforcing shafts (12), and a secondary contact plate (14) is fixedly mounted on one end of the secondary load-bearing arm (16), and a primary load-bearing arm (13) is fixedly mounted on the surface of the other primary reinforcing shaft (12), and a primary contact plate (10) is fixedly mounted on one end of the primary load-bearing arm (13), a protective steel plate (6) is bonded to the surface of the primary contact plate (10), and one side of the secondary contact plate (14) is bonded to the surface of the protective steel plate (6), and a reinforcing component is fixedly mounted on one side of the mounting block (5).

2. A steel support preload axial force device according to claim 1, characterized in that: One end of the primary load-bearing arm (13) is provided with a half tooth, and one end of the secondary load-bearing arm (16) is provided with a half tooth, and the primary load-bearing arm (13) is meshed with the adjacent ends of the secondary load-bearing arm (16).

3. A steel support preload axial force device according to claim 2, characterized in that: The strengthening component comprises a plurality of mounting ears (20), one side of each of the plurality of mounting ears (20) is provided with a rotating hole, a secondary strengthening shaft (21) is rotatably mounted in the rotating hole, a gear (22) is fixedly mounted on the surface of the secondary strengthening shaft (21), one of the gears (22) is meshed with the secondary load-bearing arm (16), and another of the gears (22) is meshed with the primary load-bearing arm (13).

4. A steel support preload axial force device according to claim 1, characterized in that: The surface of the secondary contact plate (14) is provided with a merging opening (15), and the surface of the primary contact plate (10) is provided with a merging block (17).

5. The steel support pre-axial force device according to claim 1 is characterized in that: Two sliding holes are provided on one side of the clamping plate (9), and positioning rods (19) are slidably installed in the two sliding holes. A plurality of positioning holes (18) are provided on one side of the first load-bearing arm (13), and a plurality of positioning holes (18) are provided on one side of the second load-bearing arm (16).

6. The steel support preload axial force device according to claim 1, characterized in that: A splicing groove (8) is provided on one side of the mounting block (5), and a splicing block (11) is fixedly mounted on the detection end of the axial force meter (4).

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