Foundation pit anchor rod tension detection device for civil engineering supervision

Abstract

The utility model discloses a foundation pit anchor rod tension detection device for civil engineering supervision, which comprises a positioning seat (1), a lifting assembly (2) is arranged on the positioning seat (1), and a seat body (3) for carrying a dynamometer is arranged at the moving end of the lifting assembly (2); a main body frame (4) is arranged at the tail end of the seat body (3), an air cylinder (5) is arranged at one end of the main body frame (4), a through groove (6) is formed in the main body frame (4), a longitudinal frame (7) is arranged in the through groove (6), and the extending end of the air cylinder (5) is connected with the longitudinal frame (7). The device is convenient and fast to use, the anchor rod is clamped stably and firmly, and the stability of the anchor rod during tension detection is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of foundation pit detection, especially a foundation pit anchor rod tension detection device for civil engineering supervision. BACKGROUND

[0002] Temporary foundation pits are usually excavated in the construction process, and in order to ensure that the foundation pit does not collapse, the foundation pit slope needs to be supported. Steel pipe soil nailing is one of the support methods. It is suitable for soft and loose strata such as viscous soil and loose sand in a plastic state to use driven anchor rods. Engineering supervision personnel need to detect the tension of the anchor rod. For example, the Chinese utility model patent with the announcement number CN218911545U discloses a foundation pit slope support steel pipe soil nailing tension detection clamp, which includes a clamping frame clamping a steel pipe soil nailing, a fastening block is embedded in the clamping frame, a lifting ring is rotatably connected to the top end of the clamping frame, a tension meter is hooked by the lifting ring, and a pulling mechanism is hooked by the top of the tension meter. Further, the clamping frame is arched, and the clamping frame is provided with two mutually symmetrical clamping frames. Each clamping frame is provided with a connecting part at both ends. In this type of detection device, the following problems exist: 1. Manual installation of the clamping frame is required, which increases the installation time and reduces the pipe body tension detection efficiency; 2. The top end of the clamping frame is a lifting ring structure, which has poor stability during tension detection. SUMMARY

[0003] The utility model aims at providing a foundation pit anchor rod tension detection device for civil engineering supervision. The utility model is convenient and fast to use, firmly clamps the anchor rod, and can improve the stability during anchor rod tension detection.

[0004] The technical scheme of the utility model: a foundation pit anchor rod tension detection device for civil engineering supervision, which comprises a positioning seat, a lifting assembly is arranged on the positioning seat, a seat body carrying a tension meter is arranged at the moving end of the lifting assembly; a main body frame is arranged at the tail end of the seat body, a cylinder is arranged at one end of the main body frame, a through groove is arranged in the main body frame, a longitudinal frame is arranged in the through groove, and the extension end of the cylinder is connected with the longitudinal frame; supporting pieces that fit the anchor rod are arranged at the upper and lower ends of the longitudinal frame, and a clamping jaw piece for clamping the anchor rod is arranged in the middle part of the longitudinal frame in the main body frame.

[0005] In the foundation pit anchor rod tension detection device for civil engineering supervision, the clamping jaw piece comprises an intermediate rod arranged in the main body frame and connected with the middle part of the longitudinal frame, and rotatable side rods are arranged at both sides of the intermediate rod; the end parts of the intermediate rod and the side rods jointly embrace the anchor rod; a group of symmetrically arranged transverse limiting grooves and a group of guide limiting grooves are arranged on the main body frame; a rotating shaft that fits the transverse limiting grooves and a guide shaft that fits the guide limiting grooves are arranged on the rotating part of the side rod,

[0006] The supporting piece comprises two arc-shaped pieces arranged at the longitudinal frame ends, the arc-shaped pieces are connected by bolts, and the arc-shaped surfaces of the arc-shaped pieces are in contact with the anchor rod.

[0007] The middle part of the longitudinal frame is connected with a right-angle piece by bolts, and one end of the right-angle piece is connected with the middle rod.

[0008] The inner sides of the clamping ends of the middle rod and the side rod are provided with rubber anti-skid layers.

[0009] The main body frame comprises two plate bodies arranged in a vertical mode, and a spacing block is arranged between the plate bodies; one end of each plate body is provided with a fixed plate, and the cylinder is arranged on one side of the fixed plate; the spacing block passes through the plate body at the end part, and the end part of the spacing block is connected with the fixed plate by bolts; and the clamping claw piece is arranged between the two plate bodies.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1、The positioning seat is installed at the corresponding position of the anchor rod, the cylinder is started, the extending end pushes the longitudinal frame to move stably in the through slot, the supporting pieces at the upper and lower ends of the longitudinal frame are quickly attached to the surface of the anchor rod, and the clamping claw piece accurately clamps the circumferential surface of the anchor rod.

[0012] 2、In the clamping claw piece, the side rod adopts a guide limiting groove to realize swinging opening and closing, so that the side rod always remains stable during movement, effectively prevents the side rod from shaking or deviating, ensures the continuous and stable clamping of the anchor rod, and provides a solid guarantee for the accuracy of the detection result.

[0013] 3、The main body frame adopts a splicing structure, which is not only convenient to assemble, but also can be easily disassembled when maintaining or replacing parts, effectively reduces the maintenance difficulty of the equipment, and saves maintenance time and cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a schematic view of the longitudinal frame;

[0016] Figure 3 This is a schematic diagram of the clamping claw component;

[0017] Figure 4 This is a schematic diagram of the main frame.

[0018] The markings in the attached diagram are as follows: 1-Positioning seat, 2-Lifting assembly, 3-Seat body, 4-Main frame, 5-Cylinder, 6-Through groove, 7-Longitudinal frame, 8-Supporting component, 9-Clamping claw component, 10-Intermediate rod, 11-Side rod, 12-Transverse limiting groove, 13-Guide limiting groove, 14-Rotating shaft, 15-Guide shaft, 16-Arc-shaped piece, 17-Right-angle component, 18-Plate body, 19-Spacer block, 20-Fixing plate. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0020] Example: A foundation pit anchor bolt tension testing device for civil engineering supervision, including a positioning base 1, as shown in the attached diagram. Figure 1 As shown, the bottom of the positioning seat has a connecting end, which allows the positioning seat to be installed on the slope of the foundation pit. The connecting end is mainly a flange connecting plate. After installation, the anchor rods pass through the through groove of the positioning seat. The anchor rods are installed in the foundation pit at certain intervals. The positioning seat has a rectangular narrow structure, so it will not interfere with other anchor rods during installation. A lifting assembly 2 is installed on the positioning seat 1. The lifting assembly mainly consists of a motor, a screw, and a guide rod. The moving end of the lifting assembly 2 is provided with a seat 3 connected to a force gauge. A sleeve that cooperates with the screw is provided inside the seat. The motor drives the screw to rotate, causing the seat to move. The guide rod limits the position of the seat. A main frame 4 is installed at the end of the seat 3. A cylinder 5 is installed at one end of the main frame 4. The main frame 4 has a through groove 6, and a longitudinal frame 7 is installed in the through groove 6, as shown in the attached figure. Figure 2 As shown, the extended end of cylinder 5 is connected to the longitudinal frame 7; both the upper and lower ends of the longitudinal frame 7 are connected to support members 8 that fit against the anchor rod. The support member 8 includes two arc-shaped pieces 16 disposed at the ends of the longitudinal frame 7, which are connected by bolts. The arc-shaped surfaces of the arc-shaped pieces 16 are in contact with the anchor rod. The structure is simple and easy to install. The support of the arc-shaped pieces provides stable support for the anchor rod. A clamping claw 9 for clamping the anchor rod is installed in the middle part of the longitudinal frame 7 and inside the main frame 4, as shown in the attached figure. Figure 3 As shown.

[0021] The clamping claw 9 includes a central rod 10 disposed within the main frame 4 and connected to the middle of the longitudinal frame 7. Rotatable side rods 11 are mounted on both sides of the central rod 10. The ends of the central rod 10 and the side rods 11 together encircle the anchor rod. The main frame 4 is provided with a set of symmetrically arranged transverse limiting grooves 12 and a set of guide limiting grooves 13. The rotating part of the side rod 11 is provided with a rotating shaft 14 that engages with the transverse limiting groove 12 and a guide shaft 15 that engages with the guide limiting groove 13. The limiting groove is mainly used to limit the rotation shaft. To ensure the stable lateral movement of the intermediate rod, a shaft is also provided on the intermediate rod, and a groove is provided on the main frame. The guide shaft on the side rod matches the guide limiting groove. Through this guide structure, the longitudinal frame can open and close the two side rods during lateral movement. The side rods clamp the anchor rod. The inner side of the clamping end of the intermediate rod 10 and the side rod 11 has a rubber anti-slip layer. The rubber anti-slip layer can increase the friction and improve the stability of clamping. The middle part of the longitudinal frame 7 is bolted with a right-angle piece 17. One end of the right-angle piece 17 is connected to the intermediate rod 10. The right-angle piece facilitates the disassembly and installation of the longitudinal frame and the intermediate rod. The side rod uses the guide limiting groove to realize the swing opening and closing, so that the side rod remains stable during movement, effectively preventing the side rod from shaking or deviating, ensuring the continuous and stable clamping of the anchor rod, and providing a solid guarantee for the accuracy of the test results.

[0022] The main frame 4 includes two plates 18, as shown in the attached figure. Figure 4 As shown, spacer blocks 19 are installed between the plates 18; a fixing plate 20 is installed at one end of the plate 18, and a cylinder 5 is set on one side of the fixing plate 20; the end of the spacer block 19 passes through the plate 18, and the end of the spacer block 19 is connected to the fixing plate 20 by bolts; the clamping claw 9 is set between the two plates 18; the main frame adopts a splicing structure, which is not only easy to assemble, but also easy to disassemble when maintaining or replacing parts, effectively reducing the maintenance difficulty of the equipment and saving maintenance time and cost.

[0023] The utility model discloses a working principle: before detecting anchor rod tension, the operator needs to install the positioning seat accurately on the corresponding position of anchor rod, lays the foundation for the subsequent detection work. The correct installation of positioning seat can ensure that the detection device and anchor rod are in the suitable relative position, and guarantees the smooth progress of the detection process; start cylinder 5, and cylinder 5 extension end promotes longitudinal frame 7 to move steadily in the through slot 6 of main body frame 4, along with the movement of longitudinal frame 7, its upper and lower end support 8 is close to anchor rod rapidly, and is closely combined with anchor rod surface, and at the same time, the synchronous action of clamping claw piece 9, the movement of longitudinal frame 7 drives the synchronous movement of the intermediate rod 10 connected with it, and the movement of intermediate rod 10 promotes both sides side pole 11 to rotate around pivot 14, and the guiding shaft 15 of side pole 11 moves along the guide limit groove 13, realizes the opening and closing action of side pole 11, makes intermediate rod 10 and side pole 11 end together embrace anchor rod, and support 8 and clamping claw piece 9 cooperate, and from multiple directions, anchor rod is stably clamped, avoids the anchor rod to appear to shake or shift in the detection process, when anchor rod is stably clamped, start lifting assembly 2 seat body 3 movement, drive the synchronous movement of main body frame 4, longitudinal frame 7 and the anchor rod clamped with it. At this moment, the force meter installed in seat body 3 can measure and record the tension that anchor rod bears in real time, and through the analysis of force meter data, the anchoring condition of anchor rod can be evaluated.

Claims

1. A foundation pit anchor bolt tension testing device for civil engineering supervision, comprising a positioning seat (1), a lifting assembly (2) on the positioning seat (1), and a seat (3) for mounting a force gauge on the moving end of the lifting assembly (2); characterized in that: The end of the seat (3) is provided with a main frame (4), one end of the main frame (4) is provided with a cylinder (5), the main frame (4) is provided with a through groove (6), the through groove (6) is provided with a longitudinal frame (7), the extended end of the cylinder (5) is connected to the longitudinal frame (7); the upper and lower ends of the longitudinal frame (7) are provided with support members (8) that fit with the anchor rod, and the middle part of the longitudinal frame (7) and the main frame (4) are provided with clamping claws (9) for clamping the anchor rod.

2. The foundation pit anchor bolt tension testing device for civil engineering supervision according to claim 1, characterized in that: The clamping claw (9) includes an intermediate rod (10) disposed inside the main frame (4) and connected to the middle of the longitudinal frame (7), and rotatable side rods (11) on both sides of the intermediate rod (10); the ends of the intermediate rod (10) and the side rods (11) together encircle the anchor rod; the main frame (4) is provided with a set of symmetrically arranged transverse limiting grooves (12) and a set of guide limiting grooves (13); the rotating part of the side rod (11) is provided with a rotating shaft (14) that matches the transverse limiting groove (12) and a guide shaft (15) that matches the guide limiting groove (13).

3. The foundation pit anchor bolt tension testing device for civil engineering supervision according to claim 1, characterized in that: The support component (8) includes two arc-shaped pieces (16) set at the end of the longitudinal frame (7), which are connected by bolts, and the arc-shaped surface of the arc-shaped pieces (16) is in contact with the anchor rod.

4. The foundation pit anchor bolt tension testing device for civil engineering supervision according to claim 2, characterized in that: The middle part of the longitudinal frame (7) is bolted to a right-angle piece (17), one end of which is connected to the middle rod (10).

5. The foundation pit anchor bolt tension testing device for civil engineering supervision according to claim 2, characterized in that: The clamping ends of the middle rod (10) and the side rod (11) have a rubber anti-slip layer on the inside.

6. The foundation pit anchor bolt tension testing device for civil engineering supervision according to claim 1, characterized in that: The main frame (4) includes two plates (18) with a spacer (19) between them. One end of the plate (18) is provided with a fixing plate (20), and the cylinder (5) is located on one side of the fixing plate (20). The end of the spacer (19) passes through the plate (18), and the end of the spacer (19) is connected to the fixing plate (20) by bolts. The clamping claw (9) is located between the two plates (18).

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