Steel bar drawing equipment for bridge monitoring

Abstract

The utility model discloses steel bar drawing equipment for bridge monitoring in the technical field of bridge monitoring, which comprises a bottom plate and an operating frame, the operating frame is fixedly mounted at the upper end of the bottom plate, and a lifting detection structure is mounted at the upper end of the operating frame. The lifting detection structure comprises a bearing plate, a threaded sleeve, a threaded rod, a motor, two gears, a moving plate, a tension sensor, an operation plate and four clamping plates. A matching mode of the first clamping block and the two second clamping blocks is adopted, when steel bars of different specifications are detected, the distance between the two second clamping blocks and the first clamping block is changed through the adjusting screw rod, the specifications of gaps between the multiple clamping grooves are changed, the steel bars can be fully adjusted and fixed, and the clamp does not need to be replaced.

Description

Technical Field

[0001] This utility model relates to the field of bridge monitoring technology, specifically to a steel bar pulling device for bridge monitoring. Background Technology

[0002] Bridge monitoring requires testing the tensile strength of the steel reinforcement used in bridges; however, the tensile testing machines currently used for this purpose have the following problems:

[0003] Currently, the clamps used to fix reinforcing bars on tensile testing machines are mostly directly fixed to the pulling end of the machine. The inner wall size of the clamp is adapted to the size of the reinforcing bar to ensure a tight grip on the end of the reinforcing bar. However, reinforcing bars come in different diameters, and different clamps need to be changed repeatedly when testing reinforcing bars of different diameters. This repeated disassembly and assembly is very inconvenient. In addition, current tensile testing machines are relatively large, and during monitoring, personnel usually need to transport the reinforcing bars to the designated location before testing can be carried out. This operation is cumbersome and cannot achieve on-site monitoring. Therefore, a new technical solution needs to be designed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to provide a rebar pulling device for bridge monitoring, in order to solve the problems mentioned in the background art. In the existing rebar pulling device for bridge monitoring, the clamps for fixing the rebar are mostly directly fixed to the pulling end of the tensile testing machine. The inner wall size of the clamp is adapted to the size of the rebar to ensure tight grip on the stiff end. However, rebars have different diameters, and different clamps need to be changed back and forth when testing rebars of different diameters. The repeated disassembly and assembly is very inconvenient. In addition, the current tensile testing machines are large in size, and personnel usually need to transport the rebar to the designated location before testing can be carried out. The operation is cumbersome and cannot realize on-site monitoring.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steel bar pulling device for bridge monitoring, comprising a base plate and an operating frame, wherein the operating frame is fixedly installed on the upper end of the base plate, and a lifting detection structure is installed on the upper end of the operating frame, wherein the lifting detection structure comprises a bearing plate, a threaded sleeve, a threaded rod, a motor, two gears, a moving plate, a tension sensor, an operating plate, and four clamping plates;

[0006] The bearing plate is mounted on the upper end of the operating frame. The threaded sleeve is embedded in the bearing plate. The threaded rod is movably embedded in the threaded sleeve. The motor is embedded on one side of the bearing plate. The two gears are respectively mounted on the motor drive end and the outside of the threaded sleeve. The movable plate is movably mounted on the upper end of the operating frame, and its upper center is fixedly connected to the bottom end of the threaded rod. The tension sensor is fixedly mounted on the lower end of the movable plate. The operating plate is fixedly mounted on the lower end of the tension sensor and movably mounted on the upper end of the operating frame. The four clamping plates are respectively mounted on both sides of the lower end of the operating plate and both sides of the upper end of the base plate.

[0007] As a preferred embodiment of the steel bar pulling device for bridge monitoring according to this utility model, a clamping structure is movably embedded in the four clamping plates. The clamping structure includes four adjusting screws, four moving blocks, several guide rods, two first clamping blocks, and four second clamping blocks.

[0008] The four adjusting screws are respectively movably embedded in the center of the four clamping plates. One side of each of the four moving blocks is movably connected to one end of the four adjusting screws. One end of each of the several guide rods is installed on both sides of the four moving blocks, and the other end is movably inserted through both sides of the four clamping plates. Two first clamping blocks are respectively installed on one side of two of the moving blocks, and four second clamping blocks are respectively installed on one side of the other two moving blocks.

[0009] As a preferred embodiment of the steel bar pulling device for bridge monitoring according to this utility model, clamping grooves are provided at the center of the side walls of both the first clamping block and the second clamping block.

[0010] In a preferred embodiment of the steel bar pulling device for bridge monitoring according to this utility model, the two gears mesh with each other.

[0011] As a preferred embodiment of the steel bar pulling device for bridge monitoring according to this utility model, two limiting rings are installed on the outer side of the threaded sleeve.

[0012] As a preferred embodiment of the steel bar pulling device for bridge monitoring according to this utility model, a movable connecting seat is provided at the connection between the adjusting screw and the moving block.

[0013] As a preferred embodiment of the steel bar pulling device for bridge monitoring according to this utility model, the clamping plate and the adjusting screw are connected by internal threads.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the design of this bridge monitoring steel bar pull-out device is reasonable;

[0015] 1. The method of using one first clamping block and two second clamping blocks allows for the adjustment and fixing of the steel bars when inspecting steel bars of different specifications. By adjusting the screw, the distance between the two second clamping blocks and the first clamping block can be changed, and the gap between the multiple clamping grooves can be changed, thus ensuring that the steel bars can be properly adjusted and fixed without the need to replace the clamps.

[0016] 2. Furthermore, the drive mechanism of the threaded sleeve and threaded rod effectively reduces the size of the device. Therefore, the device can be moved to the construction site for on-site measurement, which can effectively reduce measurement time and inspection time, and significantly reduce monitoring costs. Attached Figure Description

[0017] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below;

[0019] Figure 3 This is a schematic diagram of the main sectional view of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure at point A of this utility model.

[0021] In the diagram: 1. Base plate, 2. Operating frame, 3. Bearing plate, 4. Threaded sleeve, 5. Threaded rod, 6. Motor, 7. Gear, 8. Moving plate, 9. Tension sensor, 10. Operating plate, 11. Clamping plate, 12. Adjusting screw, 13. Moving block, 14. Guide rod, 15. First clamping block, 16. Second clamping block, 17. Clamping groove, 18. Limiting ring, 19. Movable connecting seat. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] In this technical solution, a steel bar pulling device for bridge monitoring includes a base plate 1 and an operating frame 2. The operating frame 2 is fixedly installed on the upper end of the base plate 1. A lifting detection structure is installed on the upper end of the operating frame 2. The lifting detection structure includes a bearing plate 3, a threaded sleeve 4, a threaded rod 5, a motor 6, two gears 7, a moving plate 8, a tension sensor 9, an operating plate 10, and four clamping plates 11.

[0025] Bearing plate 3 is installed on the upper end of operating frame 2. Threaded sleeve 4 is embedded in bearing plate 3. Threaded rod 5 is movably embedded in threaded sleeve 4. Motor 6 is embedded on one side of bearing plate 3. Two gears 7 are respectively installed on the drive end of motor 6 and the outside of threaded sleeve 4. Movable plate 8 is movably mounted on the upper end of operating frame 2, and its upper center is fixedly connected to the bottom end of threaded rod 5. Tension sensor 9 is fixedly installed on the lower end of movable plate 8. Operating plate 10 is fixedly installed on the lower end of tension sensor 9 and movably mounted on the upper end of operating frame 2. Four clamping plates 11 are respectively installed on both sides of the lower end of operating plate 10 and both sides of the upper end of base plate 1.

[0026] In this technical solution, when performing pull-out testing on reinforcing bars, the operator first moves the device to a designated position and connects it to a power source. The device is then supported by a base plate 1. The two ends of the reinforcing bar to be tested are placed between four clamping plates 11, and the clamping structure secures the ends of the reinforcing bar. Then, a motor 6 on one side of the bearing plate 3 is driven. Under the meshing action of two gears 7, the threaded sleeve 4 rotates within the bearing plate 3. Since the bottom end of the screw is fixedly connected to the upper end of the moving plate 8, the threaded rod 5 moves upward within the threaded sleeve 4 under the rotation of the threaded sleeve 4, lifting the moving plate 8, the tension sensor 9, and the operating plate 10. The distance between the operating plate 10 and the base plate 1 increases, allowing for pull-out testing of the reinforcing bar. The tension sensor 9, located between the moving plate 8 and the operating plate 10, is subjected to force. The overall pull-out value of the reinforcing bar can be obtained through the tension sensor 9 and compared with the qualified values ​​of reinforcing bars of different specifications, thus achieving pull-out testing of the reinforcing bar.

[0027] In some technical solutions, reference Figure 1 The four clamping plates 11 are movably fitted with clamping structures, which include four adjusting screws 12, four moving blocks 13, several guide rods 14, two first clamping blocks 15 and four second clamping blocks 16.

[0028] Four adjusting screws 12 are respectively movably embedded in the center of four clamping plates 11. One side of each of the four moving blocks 13 is movably connected to one end of the four adjusting screws 12. One end of each of the several guide rods 14 is installed on both sides of the four moving blocks 13, and the other end is movably inserted through both sides of the four clamping plates 11. Two first clamping blocks 15 are respectively installed on one side of two of the moving blocks 13, and four second clamping blocks 16 are respectively installed on one side of the other two moving blocks 13.

[0029] In this technical solution, when clamping and fixing the reinforcing bars, the workers place both ends of the reinforcing bars between four moving blocks 13, and then turn the four adjusting screws 12 in the four clamping plates 11 respectively. With the internal threads of the adjusting screws 12 and the clamping plates 11 engaged, the four moving blocks 13 are pushed towards the center. Several guide rods 14 are provided to ensure the stability and strength of the movement of the four moving blocks 13, until the four second clamping blocks 16 move to both sides of the two first clamping blocks 15 respectively. The clamping grooves 17 on the side walls of the first clamping blocks 15 and the second clamping blocks 16 are in full contact with the outer wall of the reinforcing bars, thus clamping and fixing the reinforcing bars. The adjustable fixing method can fix reinforcing bars of different specifications without changing the clamps, reducing the difficulty of operation.

[0030] In some technical solutions, reference Figure 1 The first clamping block 15 and the second clamping block 16 are both provided with clamping grooves 17 at the center of their side walls. The two gears 7 mesh with each other. Two limit rings 18 are installed on the outside of the threaded sleeve 4. A movable connecting seat 19 is provided at the connection between the adjusting screw 12 and the moving block 13. The clamping plate 11 and the adjusting screw 12 are connected with internal threads.

[0031] By setting two limiting rings 18, the threaded sleeve 4 can be axially limited in the bearing plate 3, so as to prevent the threaded sleeve 4 from falling out in the bearing plate 3 due to force. By setting the movable connecting seat 19, the moving block 13 can follow the adjusting screw 12 to move without affecting the overall rotation effect of the adjusting screw 12.

[0032] Working Principle: When performing pull-out testing on reinforcing bars, the operator first moves the device to the designated position and connects it to the power supply. The device is supported by the base plate 1. Then, the two ends of the reinforcing bar to be tested are placed between the four clamping plates 11. Next, the four adjusting screws 12 inside the four clamping plates 11 are turned. With the internal threads of the adjusting screws 12 and the clamping plates 11 engaged, the four moving blocks 13 are pushed towards the center. Several guide rods 14 are provided to ensure the stability and strength of the movement of the four moving blocks 13 until the four second clamping blocks 16 move to the sides of the two first clamping blocks 15. The clamping grooves 17 on the side walls of the first clamping blocks 15 and the second clamping blocks 16 are in full contact with the outer wall of the reinforcing bar, clamping and fixing the reinforcing bar. Then, the drive bearing plate 3 is activated. The motor 6 on the inner side operates, and under the action of the meshing of the two gears 7, the threaded sleeve 4 rotates within the bearing plate 3. Since the bottom end of the screw is fixedly connected to the upper end of the moving plate 8, the threaded rod 5 moves upward within the threaded sleeve 4 under the rotation of the threaded sleeve 4, lifting the moving plate 8, the tension sensor 9, and the operating plate 10. The distance between the operating plate 10 and the base plate 1 increases, and the pull-out test of the steel bar is performed. The tension sensor 9 located between the moving plate 8 and the operating plate 10 is subjected to force. The overall pull-out value of the steel bar can be obtained through the set tension sensor 9, and compared with the qualified value of steel bars of different specifications, thus realizing the pull-out test of the steel bar. The adjustable fixing method can realize the fixing of steel bars of different specifications without changing the clamps, reducing the difficulty of operation.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A reinforcing steel bar drawing apparatus for bridge monitoring comprising a base plate (1) and an operating frame (2), characterized in that, The operating frame (2) is fixedly installed on the upper end of the base plate (1). The upper end of the operating frame (2) is equipped with a lifting detection structure, which includes a bearing plate (3), a threaded sleeve (4), a threaded rod (5), a motor (6), two gears (7), a moving plate (8), a tension sensor (9), an operating plate (10), and four clamping plates (11). The bearing plate (3) is installed on the upper end of the operating frame (2), the threaded sleeve (4) is embedded in the bearing plate (3), the threaded rod (5) is movably embedded in the threaded sleeve (4), the motor (6) is embedded on one side of the bearing plate (3), the two gears (7) are respectively installed on the driving end of the motor (6) and the outside of the threaded sleeve (4), the moving plate (8) is movably fitted on the upper end of the operating frame (2), and the center of the upper end is fixedly connected to the bottom end of the threaded rod (5), the tension sensor (9) is fixedly installed on the lower end of the moving plate (8), the operating plate (10) is fixedly installed on the lower end of the tension sensor (9), and is movably fitted on the upper end of the operating frame (2), and the four clamping plates (11) are respectively installed on both sides of the lower end of the operating plate (10) and both sides of the upper end of the base plate (1).

2. The reinforcing steel bar drawing apparatus for bridge monitoring according to claim 1, wherein The four clamping plates (11) are movably fitted with clamping structures, which include four adjusting screws (12), four moving blocks (13), several guide rods (14), two first clamping blocks (15) and four second clamping blocks (16); The four adjusting screws (12) are respectively movably embedded in the center of the four clamping plates (11). One side of each of the four moving blocks (13) is movably connected to one end of each of the four adjusting screws (12). One end of each of the several guide rods (14) is respectively installed on both sides of the four moving blocks (13), and the other end is respectively movably inserted through both sides of the four clamping plates (11). Two first clamping blocks (15) are respectively installed on one side of two of the moving blocks (13), and four second clamping blocks (16) are respectively installed on one side of the other two moving blocks (13).

3. The reinforcing steel bar drawing apparatus for bridge monitoring according to claim 2, wherein Both the first clamping block (15) and the second clamping block (16) have clamping grooves (17) at the center of their sidewalls.

4. The reinforcing steel bar drawing apparatus for bridge monitoring according to claim 1, wherein The two gears (7) mesh with each other.

5. The reinforcing steel bar drawing apparatus for bridge monitoring according to claim 1, wherein Two limiting rings (18) are installed on the outside of the threaded sleeve (4).

6. The reinforcing steel bar drawing apparatus for bridge monitoring according to claim 2, wherein A movable connecting seat (19) is provided at the connection between the adjusting screw (12) and the moving block (13).

7. The reinforcing steel bar drawing apparatus for bridge monitoring according to claim 2, wherein The clamping plate (11) and the adjusting screw (12) are connected by internal threads.

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