Anti-break thread pressure anchor

Abstract

The present invention discloses an anti-breakage threaded pressure anchor rod, comprising an anchor rod, a reinforcing rod, a pressure-bearing assembly and an elastic assembly, wherein the reinforcing rod is fixedly connected to the anchor rod, the first nut of the pressure-bearing assembly is connected to the reinforcing rod by a large pitch thread, the tray and the first nut are rotatably connected, the second nut of the elastic assembly is threadedly connected to the reinforcing rod by a common thread, and is located on one side of the first nut, and a spring is installed between the first nut and the second nut. The pressure of the surrounding rock is transmitted to the reinforcing rod and the spring through the tray and the first nut, and the relationship between the spring compression amount and the spring radial pressure, and the spring radial pressure and the radial tension of the rod body is calculated and measured and calibrated, so that when the spring produces an ultimate compression deformation, the rod body tension is less than the rod body breaking tension, thereby determining the ultimate deformation of the spring. By observing and measuring the deformation of the spring, the stress condition is understood, thereby achieving the purpose of anti-breakage.

Description

Technical Field

[0001] The invention relates to the field of tunnel support equipment, and in particular to an anti-breakage threaded pressure anchor rod. Background Art

[0002] With the development of mining technology and the continuous exploitation of mineral resources, mining deep rock formations has become an important direction for the future development of mining engineering. Tunnel support under high surrounding rock pressure is the premise and necessary condition for deep mining. Anchor rods, as a commonly used material for tunnel support, have also been continuously developed with the development of mining engineering.

[0003] Traditional anchor rods use a tray to bear the rock surface pressure and directly transmit it to the end nut. The support purpose is achieved by stretching the rod body through the nut. However, the stress condition of the rod body cannot be observed, and there is a risk of sudden failure due to lack of stress or excessive stress. Summary of the invention

[0004] The purpose of the present invention is to provide an anti-breakage threaded pressure anchor rod, aiming to solve the problem that the stress condition of the traditional anchor rod cannot be observed, so that the anchor rod may fail suddenly due to no stress or excessive stress.

[0005] To achieve the above-mentioned objectives, the present invention provides an anti-breakage threaded pressure anchor rod, comprising an anchor rod, a reinforcement rod, a pressure-bearing component and an elastic component, wherein the anchor rod is fixedly connected to the reinforcement rod and is located on one side of the reinforcement rod, the pressure-bearing component comprises a tray and a first nut, the first nut is threadedly connected to the reinforcement rod and is located on a side of the reinforcement rod close to the anchor rod, the tray is rotatably connected to the first nut and is located on a side of the first nut close to the anchor rod, the elastic component comprises a spring and a second nut, the second nut is threadedly connected to the reinforcement rod and is located on a side of the reinforcement rod away from the first nut, and the spring is fixedly connected to the first nut and is located between the first nut and the second nut.

[0006] Wherein, the elastic component also includes a top nut, which is threadedly connected to the reinforcing rod and is located on a side of the reinforcing rod close to the second nut.

[0007] Wherein, the pressure-bearing component also includes a measuring ruler, which includes a fixed ruler and a movable ruler. The fixed ruler is rotatably connected to the second nut and is located on one side of the second nut. The movable ruler is fixedly connected to the tray and is located on a side of the tray close to the fixed ruler.

[0008] Wherein, the fixed ruler includes a fixed ruler body, a snap ring, a mounting plate and a locking rod, the snap ring is rotatably connected to the second nut, the second nut is located in the snap ring, there are two mounting plates, the two mounting plates are fixedly connected to the snap ring and are located on one side of the snap ring, the locking rod is threadedly connected to the two mounting plates and passes through the two mounting plates, the fixed ruler body is fixedly connected to the snap ring and is located on one side of the snap ring.

[0009] Wherein, the fixed ruler further comprises a positioning ring, which is fixedly connected to the clamping ring and is located on one side of the clamping ring.

[0010] Wherein, the moving ruler comprises a moving ruler body and a sliding block, wherein the sliding block is slidably connected to the moving ruler body and is located on one side of the moving ruler body.

[0011] Wherein, the movable ruler further comprises a damping plate, which is fixedly connected to the sliding block and is located on a side of the sliding block close to the movable ruler body.

[0012] The present invention discloses an anti-breakage threaded pressure anchor rod, wherein the anchor rod is fixedly connected to the reinforcing rod, the anchor rod is inserted into the rock formation and fixed to the rock formation ground, the first nut is threadedly connected to the reinforcing rod, the tray is rotatably connected to the first nut, when the surrounding rock is pressed, the pressure is transmitted from the tray to the first nut, the first nut directly acts on the reinforcing rod by squeezing most of the pressure through the large pitch thread, the second nut is threadedly connected to the reinforcing rod, the spring is fixedly connected to the first nut, the second nut can adjust the preload of the spring, the initial deformation tension of the anchor rod is determined according to the actual engineering requirements, and the preload is determined by the initial deformation tension of the anchor rod, and the coefficient relationship between the radial force of the rock and the radial force of the spring, and the initial tightening compression is determined by the preload and the elastic modulus of the compression element. Through the relationship between the spring compression and the spring radial pressure, and the spring radial pressure and the radial tension of the rod body, through calculation and actual measurement calibration, when the spring produces the ultimate compression deformation, the rod body tension is less than the rod body breaking tension. Thus, the ultimate deformation of the spring is determined. By observing and measuring the deformation of the spring, the stress condition of the rod body can be understood, thereby achieving the purpose of stable pressure relief and anti-breakage, thereby solving the problem that the stress condition of traditional anchor rods cannot be observed, so that the anchor rod may fail suddenly due to no stress or excessive stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a left side structural diagram of an anti-breakage threaded pressure anchor rod of the present invention;

[0015] Figure 2 This is a right side view of an anti-breakage threaded pressure anchor rod of the present invention;

[0016] Figure 3 It is a cross-sectional schematic diagram of an anti-breakage threaded pressure anchor rod of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the fixed ruler of the present invention.

[0018] 1-anchor rod, 2-reinforcement rod, 3-pressure-bearing component, 4-elastic component, 21-large pitch thread, 22-ordinary thread, 31-tray, 32-first nut, 33-measuring ruler, 35-alarm, 41-spring, 42-second nut, 43-opposite nut, 331-fixed ruler, 332-moving ruler, 351-optical coupler, 352-controller, 353-buzzer, 354-alarm light, 3311-fixed ruler body, 3312-clamping ring, 3313-mounting plate, 3314-locking rod, 3315-positioning ring, 3321-moving ruler body, 3322-sliding block, 3323-damping plate. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0021] See also Figure 1 , Figure 2 and Figure 3 The present invention provides an anti-breakage threaded pressure anchor rod, comprising:

[0022] An anchor rod 1, a reinforcing rod 2, a pressure-bearing component 3 and an elastic component 4, wherein the anchor rod 1 is fixedly connected to the reinforcing rod 2 and is located on one side of the reinforcing rod 2, the pressure-bearing component 3 includes a tray 31 and a first nut 32, the first nut 32 is threadedly connected to the reinforcing rod 2 and is located on a side of the reinforcing rod 2 close to the anchor rod 1, the tray 31 is rotatably connected to the first nut 32 and is located on a side of the first nut 32 close to the anchor rod 1, the elastic component 4 includes a spring 41 and a second nut 42, the second nut 42 is threadedly connected to the reinforcing rod 2 and is located on a side of the reinforcing rod 2 away from the first nut 32, the spring 41 is fixedly connected to the first nut 32 and is located between the first nut 32 and the second nut 42.

[0023] In this embodiment, the reinforcing rod 2 has a large pitch thread 21 and a common thread 22, the large pitch thread 21 and the common thread 22 are located on both sides of the reinforcing rod 2, the anchor rod 1 is fixedly connected to the reinforcing rod 2 and is located on a side of the reinforcing rod 2 close to the large pitch thread 21, the anchor rod 1 is inserted into the rock formation and fixed to the rock formation ground, the large pitch thread 21 determines the thread lead angle according to the material friction coefficient to release the thread self-locking condition, the strength of the reinforcing rod 2 is greater than that of the anchor rod 1, the pressure-bearing component 3 includes a tray 31 and a first nut 32, the first nut 32 is threadedly connected to the reinforcing rod 2 and is located on one side of the large pitch thread 21, the tray 31 is rotatably connected to the first nut 32 and is located on a side of the first nut 32 away from the common thread 22 On one side, when the surrounding rock is pressed, the pressure is transmitted from the tray 31 to the first nut 32. The first nut 32 directly acts on the reinforcing rod 2 by squeezing the reinforcing rod 2 through the large pitch thread 21. The elastic component 4 includes a spring 41 and a second nut 42. The second nut 42 is threadedly connected to the reinforcing rod 2 and is located on the side of the reinforcing rod 2 close to the ordinary thread 22. The spring 41 is fixedly connected to the first nut 32 and is located between the first nut 32 and the second nut 42. The second nut 42 can adjust the preload of the spring 41. A small part of the force is applied to the spring 41 by the displacement generated by the sliding of the inner nut. When the force acting on the spring is greater than the preload, the spring generates an increase in deformation elastic force and stops at another equilibrium point. The initial deformation tension of the anchor rod 1 is determined according to the actual engineering requirements, and the preload is determined by the initial deformation tension of the anchor rod 1, the coefficient relationship between the rock radial force and the radial force on the spring 41, and the initial tightening compression is determined by the preload and the elastic modulus of the compression element. Through the relationship between the spring compression and the spring radial pressure, and the spring radial pressure and the rod radial tension, through calculation and actual measurement, it is determined that when the spring produces the ultimate compression deformation, the rod tension is less than the rod breaking tension. Thus, the ultimate deformation of the spring is determined. By observing and measuring the deformation of the spring 41, the stress condition of the rod is understood, so as to achieve the purpose of stable pressure relief and anti-breakage, thereby solving the problem that the conventional anchor rod 1 cannot observe the stress condition, so that the anchor rod 1 may fail suddenly due to lack of stress or excessive stress.

[0024] Furthermore, the elastic component 4 also includes a top nut 43 , which is threadedly connected to the reinforcing rod 2 and is located on a side of the reinforcing rod 2 close to the second nut 42 .

[0025] In this embodiment, the top nut 43 can lock the position of the second nut 42 to prevent the second nut 42 from loosening during operation and causing the pre-tightening force to change.

[0026] Furthermore, the pressure-bearing component 3 also includes a measuring ruler 33, which includes a fixed ruler 331 and a movable ruler 332. The fixed ruler 331 is rotatably connected to the second nut 42 and is located on one side of the second nut 42. The movable ruler 332 is fixedly connected to the tray 31 and is located on a side of the tray 31 close to the fixed ruler 331.

[0027] In this embodiment, the fixed ruler 331 and the second nut 42 are rotatably connected. As a reference for measurement, the movable ruler 332 is fixedly connected to the tray 31, so that when the tray 31 is subjected to force to squeeze the first nut 32 to move upward, the movable ruler 332 follows the movement, so that the moving distance can be measured by comparison with the fixed ruler 331, and the compression of the spring 41 can be quantitatively read.

[0028] For further information, see Figure 4 The fixed ruler 331 includes a fixed ruler body 3311, a snap ring 3312, a mounting piece 3313 and a locking rod 3314. The snap ring 3312 is rotatably connected to the second nut 42, and the second nut 42 is located in the snap ring 3312. There are two mounting pieces 3313, and the two mounting pieces 3313 are fixedly connected to the snap ring 3312 and are located on one side of the snap ring 3312. The locking rod 3314 is threadedly connected to the two mounting pieces 3313 and passes through the two mounting pieces 3313. The fixed ruler body 3311 is fixedly connected to the snap ring 3312 and is located on one side of the snap ring 3312.

[0029] In this embodiment, after the preload force of the second nut 42 is adjusted, the retaining ring 3312 can be installed on the second nut 42, and the retaining ring 3312 can be fastened to the second nut 42 by rotating the screw to bring the two mounting plates 3313 closer together, and then the fixed ruler body 3311 can be used as a base for measurement.

[0030] Furthermore, the fixed ruler 331 also includes a positioning ring 3315 , which is fixedly connected to the snap ring 3312 and is located on one side of the snap ring 3312 .

[0031] In this embodiment, the positioning ring 3315 is used to limit the upper and lower positions of the snap ring 3312 to prevent the snap ring 3312 from sliding down under the action of gravity, thereby improving the installation stability of the snap ring 3312.

[0032] Furthermore, the moving ruler 332 includes a moving ruler body 3321 and a sliding block 3322 . The sliding block 3322 is slidably connected to the moving ruler body 3321 and is located on one side of the moving ruler body 3321 .

[0033] In this embodiment, the sliding block 3322 can slide relative to the movable ruler body 3321, so as to mark the starting position of the movable ruler body 3321, which is convenient for the operator to read.

[0034] Furthermore, the movable ruler 332 further includes a damping plate 3323 , which is fixedly connected to the sliding block 3322 and is located on a side of the sliding block 3322 close to the movable ruler body 3321 .

[0035] In this embodiment, the damping sheet 3323 can increase the friction between the sliding block 3322 and the movable ruler body 3321, so that the movable ruler body 3321 can be kept at a certain height without falling.

[0036] Furthermore, the pressure-bearing component 3 also includes an alarm 35, which includes an optical coupler 351, a controller 352 and a buzzer 353. The optical coupler 351 is slidably connected to the fixed ruler 331 and is located on one side of the fixed ruler 331. The buzzer 353 is fixedly connected to the tray 31 and is located on one side of the tray 31. The controller 352 is electrically connected to the optical coupler 351 and the buzzer 353 and is located on one side of the tray 31.

[0037] In this embodiment, the model of the optocoupler 351 can be SOEG-E / S. Sliding the optocoupler 351 can set the warning position of the optocoupler 351. When the movable ruler 332 moves to the position of the optocoupler 351, the optocoupler 351 detects the target, thereby causing the buzzer 353 to sound through the controller 352 to provide an alarm, so that the operator can handle it in time.

[0038] Furthermore, the alarm device 35 also includes an alarm light 354 , which is fixedly connected to the tray 31 , electrically connected to the controller 352 , and located on one side of the tray 31 .

[0039] In this embodiment, the alarm light 354 can light up to give an alarm after the optical coupler 351 detects a target, thereby enhancing the alarm effect and allowing the operator to handle it in time.

[0040] Working principle and use process of the present invention: please refer to Figure 1 and Figure 2After the present invention is installed, the anchor rod 1 is inserted into the surrounding rock for fixing, and then the tray 31, the first nut 32, the spring 41 and the second nut 42 are sequentially installed. The preload force of the spring 41 is adjusted by rotating the second nut 42 to cause the spring 41 to initially deform, and then the clamping ring 3312 is rotated to align the fixed ruler body 3311 with the movable ruler body 3321, and the rotating rod is rotated to complete the fixing. When surrounding rock comes under pressure, the pressure is transmitted from the tray 31 to the first nut 32. The first nut 32 applies most of the force to the reinforcing rod 2 through the large pitch thread 21, and a small part of the force acts on the spring 41, resulting in displacement. The magnitude of the force can be determined by observing the relative positions of the movable ruler body 3321 and the fixed ruler body 3311. The optical coupler 351 can also be slid to set an alarm point. When the movable ruler body 3321 moves to the alarm point, the buzzer 353 will be triggered to alarm and the alarm light will flash, so that people can be informed in time to take action, thereby achieving stable deformation. By observing the deformation of the pressure element, the safety and stability of the anchor rod 1 can be known, thereby determining the magnitude of the bedrock pressure, and taking timely measures to prevent accidents.

[0041] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. An anti-breakage threaded pressure anchor rod, characterized in that: The invention comprises an anchor rod, a reinforcing rod, a pressure-bearing component and an elastic component, wherein the anchor rod is fixedly connected to the reinforcing rod and is located on one side of the reinforcing rod, the pressure-bearing component comprises a tray and a first nut, the first nut is threadedly connected to the reinforcing rod and is located on a side of the reinforcing rod close to the anchor rod, the tray is rotatably connected to the first nut and is located on a side of the first nut close to the anchor rod, the elastic component comprises a spring and a second nut, the second nut is threadedly connected to the reinforcing rod and is located on a side of the reinforcing rod away from the first nut, and the spring is fixedly connected to the first nut and is located between the first nut and the second nut; The pressure-bearing assembly further includes a measuring ruler, which includes a fixed ruler and a movable ruler, wherein the fixed ruler is rotatably connected to the second nut and is located on one side of the second nut, and the movable ruler is fixedly connected to the tray and is located on a side of the tray close to the fixed ruler; The fixed ruler comprises a fixed ruler body, a snap ring, a mounting plate and a locking rod, the snap ring is rotatably connected to the second nut, the second nut is located in the snap ring, there are two mounting plates, the two mounting plates are fixedly connected to the snap ring and are located on one side of the snap ring, the locking rod is threadedly connected to the two mounting plates and passes through the two mounting plates, the fixed ruler body is fixedly connected to the snap ring and is located on one side of the snap ring; The fixed ruler also includes a positioning ring, which is fixedly connected to the snap ring and is located on one side of the snap ring; The moving ruler comprises a moving ruler body and a sliding block, wherein the sliding block is slidably connected to the moving ruler body and is located at one side of the moving ruler body; The pressure-bearing component also includes an alarm, which includes an optical coupler, a controller and a buzzer. The optical coupler is slidably connected to the fixed ruler and is located on one side of the fixed ruler. The buzzer is fixedly connected to the tray and is located on one side of the tray. The controller is electrically connected to the optical coupler and the buzzer and is located on one side of the tray.

2. The anti-breakage threaded pressure anchor rod according to claim 1, characterized in that: The elastic component also includes a top nut, which is threadedly connected to the reinforcing rod and is located on a side of the reinforcing rod close to the second nut.

3. The anti-breakage threaded pressure anchor rod according to claim 1, characterized in that: The movable ruler further comprises a damping plate, which is fixedly connected to the sliding block and is located on a side of the sliding block close to the movable ruler body.

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