Stress monitoring assembly for pre-stressed anchor rod

Abstract

The utility model relates to the technical field of anchor rod support monitoring, and discloses a stress monitoring assembly for a pre-stressed anchor rod, a hoop port of one group of hoop pieces is rotatably connected with a tightening screw rod, and a hoop port of the other group of hoop pieces is provided with a buckle groove opposite to the tightening screw rod. And the stress sensor and the adjusting screw seat are screwed and fixed through a stress screw rod. According to the utility model, the two groups of hoop sleeve positioning assemblies are used for hoop positioning and are buckled on the anchor rod in a hoop manner, and then the two groups of hoop sleeve positioning assemblies are used as stress points, and the stress monitoring assembly is arranged between the two groups of hoop sleeve positioning assemblies; the prestress of the anchor rod is monitored in real time by utilizing the tensile stress sensing monitoring of the stress sensor, so that the anchor rod has the advantages of simple and convenient installation performance, higher installation flexibility and more convenience in subsequent disassembly and assembly, and the whole anchor rod can be disassembled without disassembly and assembly of anchor rod accessories.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor support monitoring, in particular to a stress monitoring component for prestressed anchors. Background Art

[0002] Anchor rods are not only used in mines, but also in engineering technology to reinforce the main body of slopes, tunnels, and dam bodies. As a tensile member that penetrates deep into the stratum, the anchor rod is connected to the engineering structure at one end and penetrates deep into the stratum at the other end. The whole anchor rod is divided into a free section and an anchoring section. The free section refers to the area where the tension at the anchor rod head is transmitted to the anchor body, and its function is to apply prestress to the anchor rod. When the prestressed anchor rod is performing support work, its stress needs to be monitored in real time to prevent it from falling off due to excessive stress. Therefore, after the existing anchor rod support is installed, the corresponding stress monitoring device needs to be used to monitor its prestress, as shown in the existing patent technology: After searching, the China Patent Network discloses a prestressed anchor rod stress monitoring device (public announcement number CN218674022U). By installing a first clamping plate and a second clamping plate on the anchor rod, and clamping and installing a stress sensor between the first clamping plate and the second clamping plate, not only the anchor rod can be stably installed, but also the stress sensor is convenient to install and disassemble, and it can be completed without removing the nut on the anchor rod.

[0003] However, there are still some shortcomings in the above-mentioned public patents and the anchor prestress monitoring devices adopted in the existing market: the existing anchor prestress monitoring devices require the stress sensing components to be installed on the anchor in advance, which has great limitations on the installation environment, and it is impossible to directly remove it from the anchor during subsequent disassembly. To this end, those skilled in the art provide a stress monitoring component for prestressed anchors to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0004] The main purpose of the utility model is to provide a stress monitoring component for prestressed anchor rods, which can effectively solve the problem of inconvenient installation of existing anchor rod prestress monitoring devices in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a stress monitoring component for a prestressed anchor rod, comprising an anchor rod body, two sets of hoop positioning components are symmetrically sleeved on the outside of the rod body of the anchor rod body, and two sets of stress monitoring components are installed between the two sets of hoop positioning components;

[0006] The hoop sleeve positioning assembly comprises two groups of hoop members which are symmetrically arranged, and the two groups of hoop members are rotatably connected by a connecting pin, wherein the hoop ends of one group of hoop members are rotatably connected with a tightening screw, and the hoop ends of the other group of hoop members are provided with a buckle groove which is opposite to the tightening screw;

[0007] The stress monitoring assembly includes an adjusting screw seat symmetrically installed on the upper and lower ends of the hoop sleeve of the hoop member and a stress sensor horizontally installed in the direction of the screw hole of the adjusting screw seat. The stress sensor and the adjusting screw seat are screwed and fixed by a stress screw.

[0008] As a further solution of the utility model: two groups of hoop members form an annular structure.

[0009] As a further solution of the utility model: an anti-slip tooth sleeve is provided on the inner wall of the hoop sleeve of the hoop member.

[0010] As a further solution of the utility model: the outer diameter of the arm of the tightening screw is matched with the inner diameter of the slot of the buckle slot, and the outer side of the tightening screw is screwed with a tightening knob that is pressed against the hoop member.

[0011] As a further solution of the utility model: the stress sensor is a tensile stress sensor, and the stress sensing ends on both sides of the stress sensor are installed with stress screw sleeves horizontally opposite to the adjusting screw seat, and the stress screw sleeves and the adjusting screw seat are both screwed and adapted to the stress screw.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] When the utility model performs stress monitoring on the prestressed anchor rod, the hoop positioning of the two sets of hoop sleeve positioning components is utilized, and the hoop sleeve is snap-fitted onto the anchor rod in the form of a hoop, and then the two sets of hoop sleeve positioning components are utilized as force points, and the stress monitoring component is installed between the two sets of hoop sleeve positioning components. When the anchor rod is subsequently subjected to stress tensile changes, the tensile stress sensing monitoring of the stress sensor is utilized to perform real-time monitoring of the prestress of the anchor rod. The utility model has simple and convenient installation performance, high installation flexibility, and convenient subsequent disassembly and assembly, and the anchor rod can be disassembled as a whole without disassembling the anchor rod accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a stress monitoring component for prestressed anchor rods according to the utility model;

[0015] Figure 2 This is a schematic diagram of the installation of a stress monitoring component for a prestressed anchor rod according to the utility model;

[0016] Figure 3 This is a structural schematic diagram of a hoop positioning assembly in a stress monitoring assembly for a prestressed anchor rod according to the utility model;

[0017] Figure 4 The utility model is a structural schematic diagram of a stress monitoring component in a stress monitoring component for a prestressed anchor rod.

[0018] In the figure: 1. Anchor rod body; 2. Hoop; 3. Tightening screw; 4. Tightening knob; 5. Stress sensor; 6. Stress screw; 7. Anti-slip gear sleeve; 8. Connecting pin; 9. Buckle groove; 10. Adjustment screw seat; 11. Stress screw sleeve. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Please refer to Figure 1-4 As shown, a stress monitoring assembly for a prestressed anchor comprises an anchor body 1. Two groups of hoop positioning assemblies are symmetrically sleeved on the outer side of the rod body of the anchor body 1. The hoop positioning assembly comprises two groups of symmetrically arranged hoop members 2, and the two groups of hoop members 2 are rotatably connected by a connecting pin 8. The two groups of hoop members 2 form an annular structure. The inner wall of the hoop of the hoop member 2 is provided with an anti-skid tooth sleeve 7. By utilizing the matching hoop of the two groups of hoop members 2 and locking and anti-skidding of the anti-skid tooth sleeve 7 on the inner wall, the stress monitoring assembly can be firmly installed with the anchor body 1 in the form of a hoop, and its installation is more flexible and convenient, and is not affected by the connecting part of the anchor body 1.

[0023] The hoop end of one group of hoop members 2 is rotatably connected with a tightening screw 3, and the hoop end of the other group of hoop members 2 is provided with a snap groove 9 opposite to the tightening screw 3, the outer diameter of the arm of the tightening screw 3 is adapted to the inner diameter of the slot of the snap groove 9, and the outer side of the tightening screw 3 is screwed with a tightening knob 4 pressed against the hoop member 2. When the stress monitoring assembly is integrally connected and assembled with the anchor body 1, the two groups of hoop members 2 are matched and sleeved on the outer side of the anchor body 1, and then the tightening screw 3 is rotated and swung to be snapped into the snap groove 9, and the tightening knob 4 is turned, and the tightening force of the tightening knob 4 and the tightening screw 3 is utilized to fix the two groups of hoop members 2 on the outer side of the anchor body 1, and then in the same way, the combination of the other group of hoop members 2 is fixed on the outer side of the anchor body 1, and the two groups of hoop members 2 are kept at a suitable distance to serve as a placement space for the stress sensor 5.

[0024] Two groups of stress monitoring components are installed between the two groups of hoop positioning components. The stress monitoring components include an adjusting screw seat 10 symmetrically installed on the upper and lower ends of the hoop of the hoop member 2 and a stress sensor 5 horizontally installed in the direction of the screw hole of the adjusting screw seat 10. The stress sensor 5 is screwed and fixed to the adjusting screw seat 10 by a stress screw 6. The stress sensor 5 is a tensile stress sensor, and stress sensing ends on both sides of the stress sensor 5 are installed with stress screw sleeves 11 horizontally opposite to the adjusting screw seat 10. The stress screw sleeves 11 and the adjusting screw seat 10 are screwed and adapted to the stress screw 6. After the hoop member 2 is installed, the stress sensor 5 is horizontally placed between the hoop members 2 in sequence, and the stress screw sleeves 11 at both ends thereof are kept horizontal with the adjusting screw seat 10, and then the stress screw 6 is passed through the adjusting screw seat 10 and screwed to the stress screw sleeve 11, the stress sensor 5 is installed and positioned, and the installation of the stress monitoring component is completed.

[0025] The working principle of the utility model is as follows: when the stress monitoring assembly is connected and assembled with the anchor body 1 as a whole, the two groups of hoop members 2 are matched and sleeved on the outside of the anchor body 1, and then the tightening screw 3 is rotated and swung to be snapped into the buckle groove 9, and the tightening knob 4 is turned, and the tightening force of the tightening knob 4 and the tightening screw 3 is used to fix the two groups of hoop members 2 on the outside of the anchor body 1, and then in the same way, another group of hoop members 2 is combined and sleeved to fix the outside of the anchor body 1, and the two groups of hoop members 2 are kept at a suitable distance to serve as the placement space of the stress sensor 5, and then the stress sensor 5 is horizontally placed on the hoop members 2 in sequence. The stress sensor 5 is installed and positioned. When the anchor body 1 is subjected to stress tensile changes, the combination of the tensile force hoop 2 and the stress screw 6 is transmitted to the stress sensor 5. The tensile stress sensing monitoring of the stress sensor 5 is used to monitor the prestress of the anchor in real time. When disassembly and assembly is required, the hoop 2 only needs to be opened in sequence to remove the overall structure from the anchor body 1. There is no need to disassemble and assemble anchor accessories. Disassembly and assembly are simple, convenient and efficient.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A stress monitoring assembly for a prestressed anchor, comprising an anchor body (1), characterized in that: The outer side of the bolt body (1) is symmetrically sleeved with two sets of hoop positioning components, and two sets of stress monitoring components are installed between the two sets of hoop positioning components; The hoop sleeve positioning assembly comprises two groups of hoop members (2) which are symmetrically arranged, and the two groups of hoop members (2) are rotatably connected via a connecting pin (8), wherein the hoop end of one group of the hoop members (2) is rotatably connected to a tightening screw (3), and the hoop end of the other group of the hoop members (2) is provided with a buckle groove (9) which is opposite to the tightening screw (3); The stress monitoring assembly comprises an adjusting screw seat (10) symmetrically mounted on the upper and lower ends of a hoop sleeve of a hoop member (2) and a stress sensor (5) mounted horizontally in the direction of a screw hole of the adjusting screw seat (10); the stress sensor (5) and the adjusting screw seat (10) are screwed and fixed via a stress screw (6).

2. A stress monitoring assembly for a prestressed anchor rod according to claim 1, characterized in that: The two groups of hoop members (2) form an annular structure.

3. A stress monitoring assembly for a prestressed anchor rod according to claim 1, characterized in that: The inner wall of the hoop sleeve of the hoop member (2) is provided with an anti-slip tooth sleeve (7).

4. A stress monitoring assembly for a prestressed anchor rod according to claim 1, characterized in that: The outer diameter of the arm of the tightening screw (3) matches the inner diameter of the slot of the buckle slot (9), and a tightening knob (4) is screwed on the outer side of the tightening screw (3) and is pressed against the hoop member (2).

5. A stress monitoring assembly for a prestressed anchor rod according to claim 1, characterized in that: The stress sensor (5) is a tensile stress sensor, and stress sensing ends on both sides of the stress sensor (5) are both mounted with stress screw sleeves (11) horizontally opposite to the adjustment screw seat (10), and the stress screw sleeves (11) and the adjustment screw seat (10) are both screwed and adapted to the stress screw rod (6).

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