Optimized detection device for drawing force of pipe seam anchor rod

Abstract

The utility model provides an optimized detection device for the drawing force of a pipe seam anchor rod, and belongs to the field of pipe seam anchor rod drawing force detection. Comprising a hollow pipe seam anchor rod body, a stress clamping groove lantern ring arranged on the hollow pipe seam anchor rod body in a sleeving mode, a counter-force cone clamped into the stress clamping groove lantern ring, threaded steel bars screwed into the counter-force cone and the hollow pipe seam anchor rod body and a counter-force cylinder arranged on the periphery of the counter-force cone. A hydraulic jack and a pressure sensor are sequentially arranged above the counter-force cylinder; a pipe seam anchor rod gasket and an improved gasket are sequentially arranged below the counter-force cylinder; a cylindrical protrusion is arranged at the bottom of the improved gasket, and a groove is formed in the center of the improved gasket. The influence of the external environment on the hollow pipe seam anchor rod pull-out test is reduced by building the platform, and the stability and repeatability of the test are improved; by improving the design of the cylindrical protrusion and the groove of the gasket, the pull-out test force transmission structure is effectively attached to the uneven rock wall, and meanwhile the exposed end of the test anchor rod can be effectively protected through the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe-joint anchor rod pull-out force detection, and particularly relates to an optimized pipe-joint anchor rod pull-out force detection device. BACKGROUND

[0002] Anchor rod pull-out force detection can intuitively understand the anchoring effect of the anchor rod and the rock mass, judge whether the anchor rod installation meets the design requirements, determine the maximum tensile force that the anchor rod can withstand in the working state, provide accurate parameters for engineering design and construction, judge whether the anchor rod can withstand the expected load within the design service life, ensure the safety of the supporting structure, and timely find problems such as loosening and failure of the anchor rod, so that reinforcement or repair measures can be taken in advance to avoid safety accidents such as collapse caused by anchor rod failure. The data obtained by anchor rod pull-out force detection can effectively guide production and construction, and is very important for the stability of the project and the safety control of the construction process.

[0003] However, the data obtained by anchor rod pull-out detection not only depends on the accuracy, stability and other factors of the related sensor, but also the normativity and stability of the installation process are very important for whether the data is reliable and effective. Due to the use of drilling and blasting method in underground mining, the smoothness of the roadway wall is poor, and the hollow pipe-joint anchor rod widely used in mine support engineering cannot be arranged vertically to the anchor rod due to the relatively thin steel pipe wall and the anchor rod gasket attached to the uneven wall during the anchor rod pull-out force detection process. The equipment cannot be installed parallel to the anchor rod, which leads to inaccurate detection data, and even the pull-out force end of the exposed anchor rod is sheared off, resulting in test failure.

[0004] Therefore, it is necessary to design an improved pipe-joint anchor rod pull-out force optimization detection device to solve the above problems. SUMMARY

[0005] In view of the technical problems in the background art, the present application provides an optimized pipe-joint anchor rod pull-out force detection device, which is mainly applied to build an anchor rod pull-out force detection platform, and improves the pull-out force detection position and angle and physically protects the detected pipe-joint anchor rod.

[0006] The present application provides an optimized pipe-joint anchor rod pull-out force detection device, which comprises a hollow pipe-joint anchor rod, a stress clamping groove sleeve ring sleeved on the hollow pipe-joint anchor rod, a counterforce cone clamped into the stress clamping groove sleeve ring, a threaded steel bar screwed into the counterforce cone and the hollow pipe-joint anchor rod, and a counterforce cylinder arranged on the periphery of the counterforce cone; a hydraulic jack and a pressure sensor are sequentially arranged above the counterforce cylinder; a pipe-joint anchor rod gasket and an improved gasket are sequentially arranged below the counterforce cylinder; a cylindrical protrusion is arranged at the bottom of the improved gasket, and a recess is arranged at the center of the improved gasket.

[0007] As a further improvement of the application, the groove and the force receiving clamping groove ring are nested with each other.

[0008] As a further improvement of the application, one side of the hydraulic jack is provided with an oil inlet pipe and an oil outlet pipe.

[0009] As a further improvement of the application, the oil inlet pipe and the oil outlet pipe are connected with a driving oil pump.

[0010] As a further improvement of the application, a gasket and a fastening nut are sequentially arranged above the pressure sensor.

[0011] As a further improvement of the application, the fastening nut, the gasket, the pressure sensor and the hydraulic jack are sequentially sleeved on the threaded steel bar from top to bottom.

[0012] As a further improvement of the application, the pressure sensor is connected with an external analysis control system.

[0013] The beneficial effects of the application are:

[0014] The application provides an optimized detection device for a pipe joint anchor rod pulling force, which comprises a hollow pipe joint anchor rod, a force receiving clamping groove ring sleeved on the hollow pipe joint anchor rod, a counterforce cone clamped into the force receiving clamping groove ring, a threaded steel bar screwed into the counterforce cone and the hollow pipe joint anchor rod, and a counterforce cylinder arranged at the periphery of the counterforce cone; a hydraulic jack and a pressure sensor are sequentially arranged above the counterforce cylinder; a pipe joint anchor rod gasket and an improved gasket are sequentially arranged below the counterforce cylinder; a cylindrical protrusion is arranged at the bottom of the improved gasket, and a groove is arranged at the center of the improved gasket. The application reduces the influence of external environment on the hollow pipe joint anchor rod pulling test by building a platform, and improves the stability and repeatability of the test; the cylindrical protrusion and the groove of the improved gasket are designed to realize effective adhesion of the pulling test force transmission structure and uneven rock wall, and the device can also be used to effectively protect the exposed end of the test anchor rod.

[0015] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, which can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the application, the following will briefly introduce the drawings used in the application. Obviously, the drawings described below are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0017] Figure 1The whole structure schematic diagram of the pipe-joint anchor rod pull-out force optimization detection device in the embodiment of the present application is shown in the figure.

[0018] Figure 2 The exploded structure schematic diagram of the pipe-joint anchor rod pull-out force optimization detection device in the embodiment of the present application is shown in the figure.

[0019] Figure 3 The sectional view of the pipe-joint anchor rod pull-out force optimization detection device in the embodiment of the present application is shown in the figure.

[0020] Figure 4 The partial sectional view of the pipe-joint anchor rod pull-out force optimization detection device in the embodiment of the present application is shown in the figure.

[0021] The figure caption is as follows: 1, hollow pipe-joint anchor rod; 2, force receiving clamping groove sleeve ring; 3, counterforce cone; 4, threaded steel bar; 5, counterforce cylinder; 6, hydraulic jack; 601, oil inlet pipe; 602, oil outlet pipe; 7, pressure sensor; 701, sensor data transmission line; 8, gasket; 9, fastening nut; 10, pipe-joint anchor rod gasket; 11, improved gasket; 12, test rock wall surface. DETAILED DESCRIPTION

[0022] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0024] In this paper, "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0026] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0027] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or can be integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0028] In the field of pipe slot anchor rod pull-out force detection, due to the uneven installation of the roadway side wall and the floor, the anchor rod gasket cannot meet the requirement of being perpendicular to the anchor rod, and the counterforce cylinder installed in close contact with the gasket cannot be arranged parallel to the anchor rod during installation. Since the pipe wall of the pipe slot anchor rod is relatively thin, the exposed anchor rod pull-out force end is prone to be sheared off during pull-out force detection, resulting in inaccurate anchor rod pull-out force data during detection, unstable equipment installation, and easy damage to the anchor rod force end, thereby affecting the reliability of the detection result and increasing the engineering safety risk.

[0029] In order to solve the technical problems of low accuracy and reliability of pipe slot anchor rod pull-out force detection, the present application provides an optimized detection device for pipe slot anchor rod pull-out force, wherein the technical effects of improving detection accuracy and stability and protecting the exposed end of the test anchor rod can be achieved by using a precise hydraulic control system and improved gasket design.

[0030] Please refer to Figures 1 to 3 The embodiments of the present application provide an optimized detection device for pipe slot anchor rod pull-out force, which comprises a hollow pipe slot anchor rod 1, a force clamping groove sleeve ring 2 sleeved on the hollow pipe slot anchor rod 1, a counterforce cone 3 clamped into the force clamping groove sleeve ring 2, a threaded steel bar 4 screwed into the counterforce cone 3 and the hollow pipe slot anchor rod 1, and a counterforce cylinder 5 arranged on the periphery of the counterforce cone 3.

[0031] Specifically, the force bearing slot sleeve ring 2, the counterforce cone 3 and the counterforce cylinder 5 are sequentially sleeved on the hollow pipe slot anchor rod 1 from inside to outside; the force bearing slot sleeve ring 2 is used for bearing and transmitting the pulling force; the counterforce cone 3 is a small counterforce cone, which is embedded in the force bearing slot sleeve ring 2 and serves as a fulcrum of the counterforce; the threaded steel bar 4 is screwed into the counterforce cone 3 and the hollow pipe slot anchor rod 1, thereby increasing the stability and strength of the structure; the counterforce cylinder 5 is arranged around the counterforce cone 3, is used for accommodating and protecting the internal components, and provides additional support.

[0032] The hydraulic jack 6 and the pressure sensor 7 are sequentially arranged above the counterforce cylinder 5; the hydraulic jack 6 is used for applying the pulling force; and the pressure sensor 7 is used for measuring and recording the pulling force data.

[0033] As shown in Figure 4 , the pipe slot anchor rod gasket 10 and the improved gasket 11 are sequentially arranged below the counterforce cylinder 5; the bottom of the improved gasket 11 is provided with a cylindrical protrusion, and the center of the improved gasket 11 is provided with a groove, which is nested with the force bearing slot sleeve ring 2.

[0034] Specifically, the cylindrical protrusion is arranged around the hollow pipe slot anchor rod 1 in the direction of the improved gasket 11 towards the test rock wall surface 12, which is used for separating the hollow pipe slot anchor rod 1 from the uneven rock wall after being sleeved, thereby reducing the influence of the irregular wall surface on the pulling direction; and the groove is arranged in the direction of the improved gasket 11 towards the counterforce cylinder 5, so that the force bearing slot sleeve ring 2 can be embedded, thereby reducing the influence of the force in other non-parallel anchor rod directions on the anchor rod structure.

[0035] Further, in the embodiment of the present application, as shown in Figure 3 , the hydraulic jack 6 is provided with an oil inlet pipe 601 and an oil outlet pipe 602 on one side, and the oil inlet pipe 601 and the oil outlet pipe 602 are connected with a driving oil pump. In this way, by adjusting the output of the driving oil pump, the pulling force applied by the hydraulic jack 6 can be accurately controlled; and during the pulling test, the applied force can be continuously monitored and adjusted, thereby ensuring the smooth progress of the test.

[0036] Further, in the embodiment of the present application, as shown in Figure 3 , the pressure sensor 7 is sequentially provided with a gasket 8 and a fastening nut 9 above. The fastening nut 9, the gasket 8, the pressure sensor 7 and the hydraulic jack 6 are sequentially sleeved on the threaded steel bar 4 from top to bottom.

[0037] Specifically, the fastening nut 9 is screwed on the threaded steel bar 4 to ensure the stability of the entire device and prevent displacement during the pulling process; the washer 8 protects the pressure sensor 7 from damage caused by direct compression from the fastening nut 9, and ensures uniform contact between the pressure sensor 7 and the threaded steel bar 4; by applying uniform pressure to the washer 8 through the fastening nut 9, the washer 8 can firmly press the pressure sensor 7 to prevent displacement or damage during the anchor rod pulling force test; the pressure sensor 7 directly senses the force applied by the hydraulic jack 6 and converts it into a measurable electrical signal; the hydraulic jack 6 applies an upward thrust to the threaded steel bar 4 through the pressure sensor 7, thereby achieving the pulling of the anchor rod. Such an arrangement reduces force loss and improves test efficiency; each component can be installed and removed in sequence, facilitating on-site operation; through the precise measurement of the pressure sensor 7, the pulling force of the anchor rod can be monitored in real time, ensuring the accuracy of the test data.

[0038] Further, in the embodiments of the present application, the pressure sensor 7 is connected to an external analysis control system. The data measured by the pressure sensor 7 is transmitted in real time to the analysis control system through the sensor data transmission line 701, realizing intelligent management of the test process and improving the efficiency and safety of the test.

[0039] Please refer to Figures 1 to 4 According to one or more embodiments of the present application, the present application optimizes the structural design of the detection device and integrates advanced sensor technology to achieve accurate measurement and real-time monitoring of the stress of the anchor rod, not only improving the reliability of the detection data, but also providing a scientific basis for the evaluation of the anchor rod construction quality. At the same time, the present application also simplifies the installation and maintenance process of the equipment, improves the work efficiency, and provides an efficient, reliable and easy-to-operate anchor rod pulling force detection solution for the field of geotechnical engineering.

[0040] The principles of the working process of the embodiments of the present application are described as follows:

[0041] The hollow tubular slotted anchor rod 1 with a limiting collar is sequentially sleeved with a stress clamping groove collar 2, a matched tubular slotted anchor rod gasket 10, and an improved gasket 11, the hollow tubular slotted anchor rod 1 is driven into the rock wall, the counterforce cone 3 is clamped into the stress clamping groove collar 2 and screwed into the threaded steel bar 4, the counterforce cylinder 5, the hydraulic jack 6, the pressure sensor 7, the gasket 8 and the fastening nut 9 are sequentially sleeved outside the threaded steel bar 4, the hydraulic jack 6 is connected with the driving oil pump through the oil inlet pipe 601 and the oil outlet pipe 602. The cylindrical protrusion of the improved gasket 11 effectively reduces the contact area between the improved gasket 11 and the rock wall, and the recess is arranged on the other side, which is nested with the stress clamping groove collar 2, effectively reducing the influence of the uneven rock wall on the gasket, the anchor rod and the pulling direction, playing a directional guiding and protecting effect when the anchor rod is pulled out under stress, preventing the shearing of the hollow tubular slotted anchor rod 1 caused by the irregular wall stress, and improving the stability and accuracy of the anchor rod pulling test. Under the driving of the oil pump, the hydraulic jack 6 is pressed out, the threaded steel bar 4 fastened by the fastening nut 9 pulls out the hollow tubular slotted anchor rod 1, and the anchor rod pulling force data is received by the pressure sensor 7 for data analysis. The platform made by the application can not only ensure the reliability of the data collection of the pressure sensor 7, but also ensure the safety of the overall structure.

[0042] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and embodiments having the same technical idea and playing the same role and effect within the scope of the technical solutions of the present application are all included in the technical scope of the present application. In addition, within the scope of the main idea of the present application, various modifications that can be thought of by those skilled in the art, other ways constructed by combining part of the components in the embodiments are also included in the scope of the present application.

Claims

1. A device for optimised detection of the pull-out force of a pipe-joint anchor rod, characterised in that The hollow pipe seam anchor rod, the force clamping groove sleeve ring, the counterforce cone, the threaded steel bar and the counterforce cylinder are sequentially arranged from top to bottom.

2. The device for optimizing the detection of the tubular seam anchor rod pullout force according to claim 1, characterized in that The recess and the force clamping groove sleeve ring are nested with each other.

3. The device for optimizing the detection of the tubular seam anchor rod pullout force according to claim 1, characterized in that The hydraulic jack is provided with an oil inlet pipe and an oil outlet pipe.

4. The device for optimizing the detection of the tubular seam anchor rod pullout force according to claim 3, characterized in that The oil inlet pipe and the oil outlet pipe are connected with a driving oil pump.

5. The apparatus for optimizing the detection of the pipe-seam anchor rod pull-out force according to claim 1, characterized in that, The pressure sensor is provided with a gasket and a fastening nut from top to bottom.

6. The device for optimizing the detection of the tubular seam anchor rod pullout force according to claim 5, characterized in that The fastening nut, the gasket, the pressure sensor and the hydraulic jack are sequentially sleeved on the threaded steel bar from top to bottom.

7. The apparatus for optimizing the detection of the pipe-seam anchor rod pull-out force according to claim 1, characterized in that, The pressure sensor is connected with an external analysis control system.

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