A quick detection locking force assembly type lock foot anchor rod and support steel frame connector

Abstract

This application discloses a prefabricated anchor bolt and support frame connector for rapid detection of locking force, relating to the technical field of engineering support connection structures. It includes an outer frame fixed to the support frame, two clamping plates slidably disposed within the outer frame for clamping the anchor bolt, and a locking module disposed on the outer frame for pressing the two clamping plates against the anchor bolt. The locking module is equipped with a deformation unit for feedback of the clamping force of the corresponding clamping plates against the anchor bolt, and the deformation unit has a specific deformation force value. This application transforms the complex force problem into a simple shape observation problem, reducing reliance on worker skills, ensuring a single operating standard, and guaranteeing uniform and compliant locking force for each anchor bolt.

Description

Technical Field

[0001] This application relates to the technical field of engineering support connection structures, and in particular to a prefabricated locking foot anchor rod and support steel frame connector for rapid detection of locking force. Background Technology

[0002] In underground engineering projects such as mine roadways and tunnels, support structures play a crucial role in ensuring project safety. The connection between anchor bolts and the support steel frame is a key component of the support structure, and the reliability of this connection directly affects the entire support system's ability to withstand loads from the surrounding rock.

[0003] Currently, the conventional method for connecting anchor bolts to the support frame is to weld the anchor bolts and the support frame on-site using U-shaped or L-shaped steel bars, making them a single unit to transfer the internal load of the surrounding rock borne by the anchor bolts. This connection method has long been widely used in the field of underground engineering and is a relatively traditional and common technical approach.

[0004] However, this conventional connection method requires a high level of skill from workers, and the welding quality can vary significantly between different workers, easily leading to unstable project quality. Moreover, this method makes it difficult to visually inspect whether the locking force between the anchor bolt and the support frame meets the standard; it usually relies on the worker's feel and experience to estimate, making it impossible to guarantee that the locking force of each anchor bolt is uniform and meets the standard. Utility Model Content

[0005] To address the problems existing in the prior art, this application provides an assembled locking foot anchor rod and support steel frame connector for rapid detection of locking force.

[0006] This application provides a prefabricated anchor bolt and support steel frame connector for rapid detection of locking force, employing the following technical solution:

[0007] A prefabricated anchor bolt and support steel frame connector for rapid detection of locking force includes an outer frame fixed to the support steel frame, two clamping plates slidably disposed within the outer frame for clamping the anchor bolt, and a locking module disposed on the outer frame for pressing the two clamping plates against the anchor bolt; the locking module is provided with a deformation unit for feedback of the clamping force of the corresponding clamping plates against the anchor bolt, and the deformation unit has a specific deformation force value.

[0008] Optionally, the locking module includes a screw and a screw sleeve. The screw is fixedly connected to a corresponding clamping piece, and the screw sleeve is sleeved on the screw and threaded with the screw. The outer frame has an installation hole, and the screw sleeve passes through the installation hole. The screw sleeve has a boss.

[0009] Optionally, the deformation unit includes a deformation spring sheet, which is disposed at the mounting hole position and located inside the outer frame. The deformation spring sheet has a through hole, the threaded sleeve passes through the through hole, and the boss is disposed on the side of the deformation spring sheet near the clamping piece.

[0010] Optionally, the deformable spring sheet is disc-shaped, abuts against the inner wall of the outer frame, and the middle of the deformable spring sheet arches towards the inner side of the outer frame, with the through hole located in the middle of the deformable spring sheet.

[0011] Optionally, the threaded sleeve is provided with a limiting structure to prevent the threaded sleeve from disengaging from the mounting hole.

[0012] Optionally, the limiting structure includes a retaining ring, the side wall of the threaded sleeve is provided with an annular groove, and the retaining ring is engaged in the annular groove.

[0013] Optionally, the mounting hole is elongated, and the width of the mounting hole is adapted to the diameter of the outer wall of the threaded sleeve.

[0014] Optionally, the clamp is configured to be arc-shaped and adapted to the anchor rod.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. This application uses an outer frame fixed to the support steel frame for load bearing and positioning. Two clamping plates are slidably set inside the outer frame to clamp the anchor rod. A locking module is set on the outer frame to make the clamping plates press against the anchor rod. A deformation unit is set on the locking module to provide feedback on the clamping force of the clamping plates against the anchor rod. This can transform the complex force problem into a simple shape observation problem, reduce the dependence on worker skills, ensure a single operating standard, and ensure that the locking force of each anchor rod is uniform and meets the standard.

[0017] 2. This application, by setting the deformable spring sheet at the mounting hole position and located inside the outer frame, with the threaded sleeve passing through the through hole of the deformable spring sheet and the boss set on the side of the deformable spring sheet near the clamping plate, allows the clamping plate and the deformable spring sheet to form mutually opposing forces during the tightening process of the nut. The force acts on the deformable spring sheet through the boss, causing it to undergo elastic deformation. This transforms the complex problem of "force value" into a simple problem of "shape" observation, reducing the dependence on worker skills and simplifying the operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0019] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of this application.

[0020] Explanation of reference numerals in the attached drawings: 1. Outer frame; 11. Mounting hole; 2. Clamping piece; 3. Locking module; 31. Screw; 32. Screw sleeve; 321. Boss; 322. Snap ring; 323. Annular groove; 4. Deformation unit; 41. Deformation spring sheet; 411. Through hole. Detailed Implementation

[0021] The following will be combined with the appendix Figure 1-2 The technical solutions in the embodiments of this utility model are described in further detail below. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Those skilled in the art can combine the embodiments of this utility model to obtain other embodiments without creative effort, which are also within the protection scope of this utility model.

[0022] This application discloses an assembly-type locking foot anchor rod and support steel frame connector for rapid detection of locking force. (Refer to...) Figure 1 The system includes an outer frame 1 fixed to the support steel frame, two clamping plates 2 slidably disposed within the outer frame 1 for clamping the anchor rods, and a locking module 3 disposed on the outer frame 1 for tightening the two clamping plates 2 against the anchor rods. The outer frame 1 serves as a load-bearing and positioning element. The locking module 3 ensures that the clamping plates 2 can press against the anchor rods, achieving a reliable connection between the anchor rods and the support steel frame. The locking module 3 is equipped with a deformation unit 4 for feedback of the clamping force of the corresponding clamping plate 2 against the anchor rod. The deformation unit 4 has a specific deformation force value, transforming the complex force problem into a simple shape observation problem, reducing reliance on worker skills, ensuring a single operating standard, and guaranteeing uniform and compliant locking force for each anchor rod.

[0023] Specifically, the outer frame 1 is a square frame structure, which can be made of metal, such as carbon steel, and has good strength and rigidity. It is fixed to the flange of the supporting steel frame (such as U-shaped steel) by bolts. Of course, the outer frame 1 can also be designed into other shapes according to actual needs.

[0024] Reference Figure 1 and Figure 2 The clamping piece 2 is arc-shaped and adapted to the anchor bolt. It is generally made of a wear-resistant and somewhat elastic metal material, such as alloy steel. The arc-shaped or specifically shaped claw at the lower end of the clamping piece 2 can better fit the surface of the anchor bolt, increasing friction and ensuring reliable clamping of the tail of the anchor bolt. In addition to the arc shape, the clamping piece 2 can also be designed in other shapes to clamp the anchor bolt, such as a claw shape with serrations, to further enhance the clamping effect.

[0025] Reference Figure 1 and Figure 2The locking module 3 includes a screw 31 and a screw sleeve 32. The screw 31 is fixedly connected to the corresponding clamping piece 2, which can be achieved by welding or threaded connection to ensure a firm connection. The screw 31 is generally made of high-strength alloy steel to withstand greater pressure and effectively transmit load. The screw sleeve 32 is sleeved on the screw 31 and threaded with it. The outer frame 1 has a mounting hole 11, and the screw sleeve 32 passes through the mounting hole 11. The screw sleeve 32 is provided with a boss 321. The screw sleeve 32 can be made of stainless steel, which has good corrosion resistance.

[0026] Reference Figure 1 and Figure 2 The mounting hole 11 is elongated, and its width matches the diameter of the outer wall of the threaded sleeve 32. This design allows the threaded sleeve 32 to move flexibly within the mounting hole 11 while ensuring a certain degree of stability. The elongated mounting hole 11 can also be designed into other shapes such as circles or ovals according to actual needs.

[0027] Reference Figure 1 and Figure 2 The deformation unit 4 includes a deformable spring plate 41, which is located at the mounting hole 11 and inside the outer frame 1. The deformable spring plate 41 is disc-shaped and made of special spring steel. The deformable spring plate 41 abuts against the inner wall of the outer frame 1, and the middle of the deformable spring plate 41 arches inward toward the outer frame 1. A through hole 411 is provided in the middle of the deformable spring plate 41, and a threaded sleeve 32 passes through the through hole 411. A boss 321 is provided on the side of the deformable spring plate 41 near the clamping plate 2. This design allows the clamping plate 2 and the deformable spring plate 41 to form opposing forces during the tightening process of the nut. As the nut is tightened, the force acts on the deformable spring plate 41 through the boss 321, causing it to undergo elastic deformation.

[0028] Specifically, the deformable spring sheet 41 undergoes a precise heat treatment process to give it specific stiffness and elasticity, thereby achieving a specific deformation force value. That is, the degree of deformation of the deformable spring sheet 41 is determined by the magnitude of the applied force, and the proportional relationship between the magnitude of the applied force and the degree of deformation of the deformable spring sheet 41 is established. This transforms the complex problem of "force value" into a simple problem of observing "shape," reducing reliance on worker skills and simplifying operation.

[0029] Furthermore, the deformable spring sheet 41 can also be designed in other shapes. For example, it can be bow-shaped or other polygonal shapes, as long as it can achieve similar elastic deformation and force feedback functions.

[0030] Reference Figure 2Furthermore, the threaded sleeve 32 is also provided with a limiting structure to prevent it from disengaging from the mounting hole 11. The limiting structure includes a retaining spring 322, and the side wall of the threaded sleeve 32 has an annular groove 323, within which the retaining spring 322 engages. The retaining spring 322 is generally made of highly elastic steel wire, and by engaging within the annular groove 323, it effectively restricts the axial movement of the threaded sleeve 32. In the unused state of the connector, i.e., when the deformable spring sheet 41 is in an unforced state, the retaining spring 322 abuts against the outer side wall of the outer frame 1, ensuring the structural stability of the entire locking module 3 and facilitating installation. Besides the retaining spring 322, other limiting structures can also be used, such as a limiting nut, which prevents the threaded sleeve 32 from disengaging from the mounting hole 11 by tightening the limiting nut.

[0031] The implementation principle of the prefabricated anchor bolt and support steel frame connector for rapid detection of locking force in this application embodiment is as follows: During initial installation, the outer frame 1 is fixed on the support steel frame, and the anchor bolt is located in the middle of the upper and lower clamping plates 2, but no clamping force is generated. At this time, the deformable spring plate 41 is in a natural, unforced state. The worker uses a tool to tighten the threaded sleeve 32. Since the outer frame 1 is connected to the support steel frame and the threaded rod 31 and clamping plates 2 are clamped by the anchor bolt, the two clamping plates 2 will move towards the center of the anchor bolt, eventually clamping the anchor bolt. The downward pressure of the threaded sleeve 32 is entirely applied to the deformable spring plate 41, causing it to undergo elastic deformation. The deformable spring plate 41 is gradually compressed and gradually adheres to the inner wall of the outer frame 1. The stiffness of the deformable spring plate 41 is precisely calculated and designed. When the worker continues to tighten until the deformable spring plate 41 is completely flattened and "flattened" against the surface of the outer frame 1, the rebound force generated by the deformable spring plate 41 at this time is exactly equal to the standard preload force of the anchor bolt required by the design. By observing the shape changes of the deformable spring plate 41, workers can quickly determine whether the clamping force of the clamp plate 2 on the anchor rod meets the standard. The operation is simple and intuitive, reducing the dependence on worker skills and ensuring that the locking force of each anchor rod is uniform and meets the standard. This represents a significant improvement and enhancement compared to traditional connection methods.

[0032] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated anchor bolt and support steel frame connector for rapid detection of locking force, characterized in that, include: The outer frame (1) is fixed to the support steel frame. Two clamping pieces (2) are slidably set inside the outer frame (1) and are used to clamp the anchor rods respectively. Locking modules (3) are installed on the outer frame (1) and are used to clamp the two clips (2) against the anchor rod respectively; The locking module (3) is provided with a deformation unit (4) for feeding back the clamping force of the corresponding clamp (2) on the anchor rod. The deformation unit (4) has a specific deformation force value.

2. The prefabricated locking foot anchor rod and support steel frame connector for rapid detection of locking force as described in claim 1, characterized in that: The locking module (3) includes a screw (31) and a screw sleeve (32). The screw (31) is fixedly connected to the corresponding clamp (2). The screw sleeve (32) is sleeved on the screw (31) and threadedly engaged with the screw (31). The outer frame (1) has an installation hole (11). The screw sleeve (32) passes through the installation hole (11). The screw sleeve (32) has a boss (321).

3. The prefabricated locking foot anchor rod and support steel frame connector for rapid detection of locking force according to claim 2, characterized in that: The deformation unit (4) includes a deformation spring sheet (41), which is located at the mounting hole (11) and inside the outer frame (1). The deformation spring sheet (41) has a through hole (411), the threaded sleeve (32) passes through the through hole (411), and the boss (321) is located on the side of the deformation spring sheet (41) near the clamping piece (2).

4. The prefabricated locking foot anchor rod and support steel frame connector for rapid detection of locking force as described in claim 3, characterized in that: The deformable spring sheet (41) is disc-shaped and abuts against the inner wall of the outer frame (1). The middle of the deformable spring sheet (41) arches towards the inner side of the outer frame (1). The through hole (411) is located in the middle of the deformable spring sheet (41).

5. The prefabricated locking foot anchor rod and support steel frame connector for rapid detection of locking force according to claim 3, characterized in that: The threaded sleeve (32) is provided with a limiting structure to prevent the threaded sleeve (32) from coming out of the mounting hole (11).

6. The prefabricated locking foot anchor rod and support steel frame connector for rapid detection of locking force according to claim 5, characterized in that: The limiting structure includes a retaining ring (322), and the side wall of the threaded sleeve (32) is provided with an annular groove (323), and the retaining ring (322) is engaged in the annular groove (323).

7. The prefabricated locking foot anchor rod and support steel frame connector for rapid detection of locking force according to claim 2, characterized in that: The mounting hole (11) is elongated, and the width of the mounting hole (11) is adapted to the outer diameter of the threaded sleeve (32).

8. The prefabricated locking foot anchor rod and support steel frame connector for rapid detection of locking force according to claim 1, characterized in that: The clamp (2) is set in an arc shape and is adapted to the anchor rod.

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