Equipment and method for detecting length of anchor rod for vertical shaft engineering

Abstract

The invention relates to the technical field of anchor rod length detection, and discloses an anchor rod length detection device for shaft engineering and a detection method.The anchor rod length detection device comprises a protection frame, a sealing door is hinged to the top of the protection frame, a rubber plate is fixedly connected to the inner wall of the protection frame, an instrument host is arranged in the protection frame, and a sensor connecting line is inserted into the top of the instrument host; a sensor is inserted into the end, away from the instrument host, of the sensor connecting line, a threaded rod is rotationally connected to the end of the sensor, a super-magnetic source connecting line is inserted into the top of the instrument host, and a super-magnetic source is inserted into the end, away from the instrument host, of the super-magnetic source connecting line. The surface of the anchor rod is sleeved with the mounting cylinder, at the moment, the receiving end of the sensor makes contact with the end of the anchor rod, the output end of the super-magnetic source makes contact with the end of the anchor rod and is kept horizontal with the anchor rod, and the sensor transmits received signals to the instrument host through the sensor connecting line; therefore, the length of the anchor rod embedded into the soil layer is detected.

Description

Technical Field

[0001] This invention relates to the field of anchor bolt length detection technology, specifically to an anchor bolt length detection device and method for shaft engineering. Background Technology

[0002] The anchor bolts used in shaft engineering are mainly used to reinforce the surrounding rock of the shaft. They connect the rock mass to the stable strata through prestressing to form an integral support structure. By applying prestress, the anchor bolts connect the loose rock mass around the shaft to the stable strata, preventing deformation and collapse of the surrounding rock. During the shaft excavation process, the anchor bolts can limit the radial displacement of the surrounding rock and ensure the stability of the shaft wall. The anchor bolts are usually made of high-strength steel, with one end fixed in the surrounding rock of the shaft wall and the other end connected to the support structure. After the anchor bolts are installed into the soil, the length of the anchor bolt embedded in the soil needs to be measured to ensure that the embedment length can achieve the maximum effectiveness. Currently, the length of the anchor bolts is generally measured using a non-destructive testing (NDT) instrument. However, when using an NDT instrument, the corresponding equipment needs to be connected to the main unit of the instrument via a connecting cable. When testing the anchor bolts, the operator needs to hold the testing equipment and fix it at the end of the anchor bolt. When operating the testing equipment in the shaft, the operator needs to maintain the stability of the equipment and its level with the anchor bolt. However, the angle of the anchor bolts in the shaft varies, and the operator's holding of the testing equipment is prone to tilting when in contact with the anchor bolt, which affects the signal transmission between the anchor bolt and the main unit of the instrument, resulting in inaccurate test results. Summary of the Invention

[0003] The purpose of this invention is to provide a device and method for detecting the length of anchor bolts used in vertical shaft engineering, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to an anchor bolt length detection device and method for vertical shaft engineering, comprising a protective frame, a sealed door hinged to the top of the protective frame, a rubber plate fixedly connected to the inner wall of the protective frame, an instrument main unit housed inside the protective frame, a sensor connection line inserted into the top of the instrument main unit, a sensor connected to the end of the sensor connection line away from the instrument main unit, a threaded rod rotatably connected to the end of the sensor, a supermagnetic source connection line inserted into the top of the instrument main unit, a supermagnetic source connected to the end of the supermagnetic source connection line away from the instrument main unit, an installation cylinder housed inside the protective frame, a winding frame fixedly connected to the surface of the installation cylinder, and further comprising: The mounting component is installed inside the mounting cylinder and is used to connect the supermagnetic source and the sensor, thereby improving the ease of assembly of the supermagnetic source and the sensor. A fixing component is installed inside the mounting cylinder and is used to fix the mounting cylinder to the surface of the anchor rod; A closing component is installed inside the mounting cylinder. The fixing component pushes the mounting component to operate through the closing component, improving the convenience of connecting the supermagnetic source and sensor to the anchor rod.

[0005] Furthermore, the ends of the sensor connection line and the supermagnetic source connection line away from the instrument host pass through the mounting cylinder and extend into the interior of the mounting cylinder. The ends of the sensor connection line and the supermagnetic source connection line near the mounting cylinder are located inside the winding frame. The surface of the winding frame is in contact with the surface of the rubber plate, and the lower surface of the instrument host is in contact with the surface of the rubber plate. An opening is provided at the top of the mounting cylinder to facilitate the installation of the sensor inside the mounting cylinder, so as to install and remove the sensor and the supermagnetic source.

[0006] Furthermore, the mounting component includes: A positioning component, which is installed inside the mounting cylinder, is used to limit the position of the supermagnetic source and the sensor; The mounting component is installed inside the positioning component and is used to assemble and fix the supermagnetic source and sensor, thereby improving the ease of use of the supermagnetic source and sensor.

[0007] Furthermore, the positioning component includes a positioning ring, the surface of which is fixedly connected to the inner wall of the mounting cylinder, and a sliding bracket is fixedly connected to the inner wall of the positioning ring. The number of sliding brackets is set to two, and the two sliding brackets are symmetrically arranged with the positioning ring as the center.

[0008] Furthermore, the mounting assembly includes a mounting ring, a rubber pad fixedly connected to the inner wall of the mounting ring, an elastic rod fixedly connected to the surface of the mounting ring, a threaded rod fixedly connected to the end of the elastic rod away from the mounting ring, a stabilizing plate fixedly connected to the surface of the threaded rod, a slider fixedly connected to the surface of the mounting ring, the end of the stabilizing plate away from the threaded rod contacting the inner wall of the slide rail frame, the end of the slider away from the mounting ring contacting the inner wall of the slide rail frame, the inner wall of the rubber pad contacting the surface of the supermagnetic source, and the surface of the threaded rod being threadedly connected to the inner wall of the threaded rod.

[0009] Furthermore, the fixing component includes: A support assembly is installed inside the mounting cylinder and is used to support and limit the position of the mounting cylinder. An extrusion assembly, which is installed inside a support assembly, is used to fix the mounting cylinder to the surface of the anchor rod.

[0010] Furthermore, the support assembly includes a support ring, the surface of which is fixedly connected to the inner wall of the mounting cylinder, and a limiting seat is fixedly connected to the inner wall of the support ring. The number of limiting seats is set to four, and the four limiting seats are arranged circumferentially around the support ring.

[0011] Furthermore, the extrusion assembly includes a spring rod, the end of which is fixedly connected to the surface of the limiting seat. An extrusion plate is fixedly connected to the end of the spring rod away from the limiting seat. An inclined plate is fixedly connected to the end of the extrusion plate. Four inclined plates are provided, arranged circumferentially around the support ring. The ends of the four inclined plates away from the extrusion plate are arranged away from each other.

[0012] Furthermore, the closing component includes a spring plate, the end of which is hinged to the surface of the extrusion plate. A round rod is hinged to the end of the spring plate away from the extrusion plate, and a semi-circular frame is hinged to the end of the round rod away from the spring plate. Synchronizing plates are respectively hinged to both ends of the semi-circular frame. The ends of the two synchronization plates away from the semi-circular frame are respectively fixedly connected to the surfaces of the stabilizing plate and the slider. There are two round rods, which are arranged vertically inside the mounting cylinder. The end of the spring plate away from the round rod is inclined.

[0013] Furthermore, a method for detecting the length of anchor bolts used in shaft engineering includes the following steps: S1: After the threaded rod is installed inside the threaded hole rod, the threaded rod can fix the sensor inside the mounting cylinder. After the super magnetic vibration source is inserted into the rubber pad, the mounting ring is used to support and limit the super magnetic vibration source. The threaded hole rod is connected to the mounting ring through the elastic rod. The elasticity of the elastic rod is used to maintain the distance between the super magnetic vibration source and the sensor. S2: Place the mounting sleeve on the surface of the anchor rod. At this time, the receiving end of the sensor will contact the end of the anchor rod, and the output end of the super magnetic vibration source will also contact the end of the anchor rod and remain horizontal with the anchor rod. The sensor will transmit the received signal to the main unit of the instrument through the sensor connection line, thereby detecting the length of the anchor rod embedded in the soil layer. S3: When the installation sleeve is placed on the surface of the anchor rod, the anchor rod will push the extrusion plate to move away from each other through the inclined plate. When the extrusion plate moves, it will compress the elastic rod. At this time, the extrusion plate can fix the installation sleeve on the surface of the anchor rod through the elasticity of the elastic rod. S4: When the semi-circular frame moves, it pushes the stabilizing plate and the slider to move closer to each other through the synchronization plate. When the stabilizing plate and the slider move, they will push the sensor and the super magnetic vibration source to move closer to each other, so as to ensure that the sensor and the super magnetic vibration source can stably contact the surface of the anchor rod.

[0014] The present invention has the following beneficial effects: This invention places the main instrument unit inside a protective frame for protection. When needed, the sealed door is opened to remove the main instrument unit. The winding rack on the surface of the mounting cylinder contacts the surface of the rubber plate, which limits the mounting cylinder's position and improves its stability during transport. After the threaded rod is installed inside the threaded hole rod, the threaded rod secures the sensor inside the mounting cylinder. The supermagnetic source is inserted into the rubber pad, and a mounting ring supports and limits its position. The threaded hole rod is connected to the mounting ring via an elastic rod, which maintains the distance between the supermagnetic source and the sensor, preventing damage from collisions during transport. When the length of the anchor rod needs to be measured, the mounting cylinder is placed over the surface of the anchor rod, at which point the sensor's receiving end contacts the end of the anchor rod. The output end of the supermagnetic source will also contact the end of the anchor rod and remain horizontal with it. The sensor will transmit the received signal to the main unit of the instrument through the sensor connection line, thereby detecting the length of the anchor rod embedded in the soil layer to ensure that the anchor rod can play its maximum role. After removing the installation cylinder from the inside of the protective frame, the sensor connection line and the supermagnetic source connection line can be taken out from the inside of the winding frame. After use, the sensor connection line and the supermagnetic source connection line can be directly wound around the inside of the winding frame to limit their movement and prevent them from tangling after being piled up for storage, thus improving the convenience of anchor rod detection. When the sensor and the supermagnetic source are installed inside the installation cylinder, the sensor and the supermagnetic source can contact the end of the anchor rod after the installation cylinder is placed on the surface of the anchor rod, thereby improving the convenience of anchor rod length detection.

[0015] This invention features a support ring inside the mounting cylinder to support and limit the elastic rods. Four elastic rods are provided. When the mounting cylinder is placed on the surface of the anchor rod, the anchor rod pushes the compression plates away from each other via an inclined plate. As the compression plates move, they compress the elastic rods. The compression plates then use the elasticity of the elastic rods to fix the mounting cylinder to the surface of the anchor rod, improving the ease of installation. The four compression plates are arranged around the circumference of the anchor rod to ensure the stability of the mounting cylinder support, ensuring that the supermagnetic source maintains horizontal contact with the anchor rod and improving the accuracy of anchor rod length detection.

[0016] When the extrusion plates of this invention are set apart, they push the end of the spring plate to move. The angle of the spring plate changes during movement, causing the semi-circular frame to deform and move its ends closer together. During this movement, the semi-circular frame pushes the stabilizing plate and the slider closer together via the synchronization plate. The stabilizing plate and the slider then push the sensor and the super-magnetic source closer together to ensure that the sensor and the super-magnetic source can stably contact the surface of the anchor rod. After the mounting cylinder is removed from the surface of the anchor rod, the sensor and the super-magnetic source will move apart due to the elasticity of the elastic rod, maintaining a distance between them during transportation and also maintaining a distance from the inner wall of the mounting cylinder to avoid collisions during transportation.

[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the protective frame of the present invention; Figure 3 This is a schematic diagram of the main unit structure of the instrument of the present invention; Figure 4 This is a schematic cross-sectional view of the mounting cylinder structure of the present invention; Figure 5 This is a schematic diagram of the overall structure of the positioning component of the present invention; Figure 6 This is a schematic diagram of the overall structure of the mounting components of the present invention; Figure 7 This is a schematic diagram of the overall structure of the fixing component of the present invention; Figure 8 This is a schematic diagram of the overall structure of the closing component of the present invention; Figure 9 This is a schematic diagram of the process structure of the present invention.

[0020] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Protective frame; 2. Sealing door; 3. Rubber plate; 4. Mounting cylinder; 5. Rewinding frame; 6. Main unit of the instrument; 7. Sensor connection cable; 8. Supermagnetic source connection cable; 9. Supermagnetic source; 10. Threaded rod; 11. Sensor; 12. Mounting component; 13. Positioning assembly; 14. Mounting assembly; 15. Fixing component; 16. Support assembly; 17. Extrusion assembly; 18. Closing component; 131. Positioning ring; 132. Slide frame; 141. Mounting ring; 142. Rubber pad; 143. Slider; 144. Stabilizing plate; 145. Screw hole rod; 146. Elastic rod; 161. Support ring; 162. Limit seat; 171. Elastic rod; 172. Extrusion plate; 173. Inclined plate; 181. Synchronization plate; 182. Semicircular frame; 183. Round rod; 184. Spring plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-9 As shown, this invention is a device and method for detecting the length of anchor bolts used in vertical shaft engineering. It includes a protective frame 1, a sealing door 2 hinged to the top of the protective frame 1, a rubber plate 3 fixedly connected to the inner wall of the protective frame 1, an instrument host 6 inside the protective frame 1, a sensor connection line 7 inserted into the top of the instrument host 6, a sensor 11 inserted into the end of the sensor connection line 7 away from the instrument host 6, a threaded rod 10 rotatably connected to the end of the sensor 11, a supermagnetic source connection line 8 inserted into the top of the instrument host 6, a supermagnetic source 9 inserted into the end of the supermagnetic source connection line 8 away from the instrument host 6, an installation cylinder 4 inside the protective frame 1, a winding frame 5 fixedly connected to the surface of the installation cylinder 4, and further includes: Mounting component 12 is installed inside the mounting cylinder 4. Mounting component 12 is used to connect the super magnetic vibration source 9 and the sensor 11, improving the ease of assembly of the super magnetic vibration source 9 and the sensor 11. Fixing component 15 is installed inside the mounting cylinder 4 and is used to fix the mounting cylinder 4 to the surface of the anchor rod; The closing component 18 is installed inside the mounting cylinder 4. The fixing component 15 pushes the mounting component 12 through the closing component 18, which improves the convenience of connecting the super magnetic vibration source 9 and the sensor 11 to the anchor rod.

[0023] The ends of the sensor connection line 7 and the supermagnetic source connection line 8 away from the instrument host 6 pass through the mounting cylinder 4 and extend into the interior of the mounting cylinder 4. The ends of the sensor connection line 7 and the supermagnetic source connection line 8 near the mounting cylinder 4 are located inside the winding frame 5. The surface of the winding frame 5 is in contact with the surface of the rubber plate 3. The lower surface of the instrument host 6 is in contact with the surface of the rubber plate 3. The instrument host 6 is placed inside the protective frame 1 and protected by the protective frame 1. When needed, the sealing door 2 is opened and the instrument host 6 can be taken out. The winding frame 5 on the surface of the mounting cylinder 4 is in contact with the surface of the rubber plate 3. The rubber plate 3 is used to limit the mounting cylinder 4 and improve the stability of the mounting cylinder 4 during transportation. After the threaded rod 10 is installed inside the threaded hole rod 145, the threaded rod 10 can fix the sensor 11 inside the mounting cylinder 4. After the supermagnetic source 9 is inserted into the rubber pad 142, the mounting ring 141 is used to support and limit the supermagnetic source 9.

[0024] Mounting component 12 includes: Positioning component 13 is installed inside the mounting cylinder 4 and is used to limit the position of the super magnetic vibration source 9 and the sensor 11. Mounting component 14 is installed inside positioning component 13. Mounting component 14 is used to assemble and fix the supermagnetic source 9 and sensor 11, thereby improving the ease of use of the supermagnetic source 9 and sensor 11.

[0025] The positioning component 13 includes a positioning ring 131. The surface of the positioning ring 131 is fixedly connected to the inner wall of the mounting cylinder 4. A slide rail 132 is fixedly connected to the inner wall of the positioning ring 131. There are two slide rails 132, which are symmetrically arranged with the positioning ring 131 as the center.

[0026] Mounting assembly 14 includes a mounting ring 141, with a rubber pad 142 fixedly connected to the inner wall of the mounting ring 141. An elastic rod 146 is fixedly connected to the surface of the mounting ring 141. A threaded rod 145 is fixedly connected to the end of the elastic rod 146 away from the mounting ring 141. A stabilizing plate 144 is fixedly connected to the surface of the threaded rod 145. A slider 143 is fixedly connected to the surface of the mounting ring 141. The end of the stabilizing plate 144 away from the threaded rod 145 contacts the inner wall of the slide rail frame 132. The end of the slider 143 away from the mounting ring 141 contacts the inner wall of the slide rail frame 132. The inner wall of the rubber pad 142 contacts the surface of the super-magnetic source 9. The surface of the threaded rod 10 contacts the threaded rod. The inner wall of the 145 is threaded, and the screw rod 145 is connected to the mounting ring 141 through the elastic rod 146. The elasticity of the elastic rod 146 is used to maintain the distance between the super magnetic source 9 and the sensor 11, so as to avoid damage to the super magnetic source 9 and the sensor 11 due to collision during transportation. When it is necessary to detect the length of the anchor rod, the mounting sleeve 4 is put on the surface of the anchor rod. At this time, the receiving end of the sensor 11 will contact the end of the anchor rod, and the output end of the super magnetic source 9 will also contact the end of the anchor rod and keep horizontal with the anchor rod. The sensor 11 will transmit the received signal to the instrument host 6 through the sensor connection line 7, thereby detecting the length of the anchor rod embedded in the soil layer.

[0027] The fixing component 15 includes: Support component 16 is installed inside the mounting cylinder 4 and is used to support and limit the mounting cylinder 4. The extrusion assembly 17 is installed inside the support assembly 16 and is used to fix the mounting cylinder 4 to the surface of the anchor rod.

[0028] The support assembly 16 includes a support ring 161, the surface of which is fixedly connected to the inner wall of the mounting cylinder 4. A limiting seat 162 is fixedly connected to the inner wall of the support ring 161. There are four limiting seats 162, which are arranged circumferentially around the support ring 161.

[0029] The extrusion assembly 17 includes a spring rod 171. The end of the spring rod 171 is fixedly connected to the surface of the limiting seat 162. An extrusion plate 172 is fixedly connected to the end of the spring rod 171 away from the limiting seat 162. An inclined plate 173 is fixedly connected to the end of the extrusion plate 172. Four inclined plates 173 are arranged circumferentially around the support ring 161, with the ends of the four inclined plates 173 away from the extrusion plate 172 positioned away from each other. A support ring 161 is provided inside the mounting cylinder 4 to support the spring rod 171. 71 provides support and limit, and four elastic rods 171 are provided. When the installation cylinder 4 is fitted onto the surface of the anchor rod, the anchor rod will push the compression plate 172 to move away from each other through the inclined plate 173. When the compression plate 172 moves, it will compress the elastic rod 171. At this time, the compression plate 172 can fix the installation cylinder 4 to the surface of the anchor rod through the elasticity of the elastic rod 171, which improves the convenience of its installation on the surface of the anchor rod. The four compression plates 172 are arranged around the circumference of the anchor rod to ensure the stability of the support for the installation cylinder 4.

[0030] The closing component 18 includes a spring plate 184. The end of the spring plate 184 is hinged to the surface of the extrusion plate 172. A round rod 183 is hinged to the end of the spring plate 184 away from the extrusion plate 172. A semi-circular frame 182 is hinged to the end of the round rod 183 away from the spring plate 184. Synchronizing plates 181 are hinged to both ends of the semi-circular frame 182. The ends of the two synchronous plates 181 away from the semi-circular frame 182 are fixedly connected to the surfaces of the stabilizing plate 144 and the slider 143, respectively. Two round rods 183 are provided, arranged vertically inside the mounting cylinder 4. The end of the spring plate 184 away from the round rods 183 is inclined. When the plates 172 are set to move away from each other, the pressing plate 172 will push the end of the spring plate 184 to move. The angle of the spring plate 184 will change when it moves. At this time, the spring plate 184 will push the semi-circular frame 182 to deform when it moves, so that the ends of the semi-circular frame 182 move closer to each other. When the semi-circular frame 182 moves, it will push the stabilizing plate 144 and the slider 143 to move closer to each other through the synchronization plate 181. When the stabilizing plate 144 and the slider 143 move, they will push the sensor 11 and the super magnetic vibration source 9 to move closer to each other, so as to ensure that the sensor 11 and the super magnetic vibration source 9 can stably contact the surface of the anchor rod.

[0031] A method for detecting the length of anchor bolts used in vertical shaft engineering includes the following steps: S1: After the threaded rod 10 is installed inside the threaded hole rod 145, the threaded rod 10 can fix the sensor 11 inside the mounting cylinder 4. After the super magnetic vibration source 9 is inserted into the rubber pad 142, the mounting ring 141 is used to support and limit the super magnetic vibration source 9. The threaded hole rod 145 is connected to the mounting ring 141 through the elastic rod 146. The elasticity of the elastic rod 146 is used to maintain the distance between the super magnetic vibration source 9 and the sensor 11. S2: Place the mounting sleeve 4 on the surface of the anchor rod. At this time, the receiving end of the sensor 11 will contact the end of the anchor rod, and the output end of the super magnetic vibration source 9 will also contact the end of the anchor rod and remain horizontal with the anchor rod. The sensor 11 will transmit the received signal to the instrument host 6 through the sensor connection line 7, thereby detecting the length of the anchor rod embedded in the soil layer. S3: When the installation cylinder 4 is placed on the surface of the anchor rod, the anchor rod will push the pressing plate 172 to move away from each other through the inclined plate 173. When the pressing plate 172 moves, it will compress the elastic rod 171. At this time, the pressing plate 172 can fix the installation cylinder 4 on the surface of the anchor rod through the elasticity of the elastic rod 171. S4: When the semicircular frame 182 moves, it pushes the stabilizing plate 144 and the slider 143 to move closer to each other through the synchronization plate 181. When the stabilizing plate 144 and the slider 143 move, they will push the sensor 11 and the super magnetic vibration source 9 to move closer to each other, so as to ensure that the sensor 11 and the super magnetic vibration source 9 can stably contact the surface of the anchor rod.

[0032] In use, the main instrument 6 is placed inside the protective frame 1 for protection. When needed, the sealing door 2 is opened to remove the main instrument 6. The winding rack 5 on the surface of the mounting cylinder 4 contacts the surface of the rubber plate 3, which limits the mounting cylinder 4 and improves its stability during transportation. After the threaded rod 10 is installed inside the threaded hole rod 145, the threaded rod 10 can fix the sensor 11 inside the mounting cylinder 4. After the supermagnetic source 9 is inserted into the rubber pad 142, the mounting ring 141 supports and limits the supermagnetic source 9. The threaded hole rod 145 is connected to the mounting ring 141 through the elastic rod 146. The elasticity of the elastic rod 146 maintains the distance between the supermagnetic source 9 and the sensor 11, preventing damage to the supermagnetic source 9 and the sensor 11 due to collision during transportation. When it is necessary to detect the length of the anchor rod, the mounting cylinder 4 is placed on the surface of the anchor rod. At this time, the sensor 11... The receiving end of sensor 11 will contact the end of the anchor rod, and the output end of the super magnetic source 9 will also contact the end of the anchor rod and remain horizontal with the anchor rod. Sensor 11 will transmit the received signal to the instrument host 6 through sensor connection line 7, thereby detecting the length of the anchor rod embedded in the soil layer to ensure that the anchor rod can play its maximum role. After removing the installation cylinder 4 from the inside of the protective frame 1, the sensor connection line 7 and the super magnetic source connection line 8 can be taken out from the inside of the winding frame 5. After use, the sensor connection line 7 and the super magnetic source connection line 8 can be directly wound around the inside of the winding frame 5 to limit their movement and prevent them from tangling after being stored together, thus improving the convenience of anchor rod detection. When the sensor 11 and the super magnetic source 9 are installed inside the installation cylinder 4, the sensor 11 and the super magnetic source 9 can contact the end of the anchor rod after the installation cylinder 4 is placed on the surface of the anchor rod, thereby improving the convenience of anchor rod length detection. Inside the mounting cylinder 4, a support ring 161 is provided to support and limit the elastic rod 171. There are four elastic rods 171. When the mounting cylinder 4 is placed on the surface of the anchor rod, the anchor rod will push the compression plate 172 to move away from each other through the inclined plate 173. When the compression plate 172 moves, it will compress the elastic rod 171. At this time, the compression plate 172 can fix the mounting cylinder 4 to the surface of the anchor rod through the elasticity of the elastic rod 171, which improves the convenience of its installation on the surface of the anchor rod. The four compression plates 172 are arranged around the circumference of the anchor rod to ensure the stability of the support for the mounting cylinder 4, so that the super magnetic vibration source 9 will maintain horizontal contact with the anchor rod, improving the accuracy of the anchor rod length detection. When the extrusion plates 172 are set to move away from each other, the extrusion plates 172 will push the end of the spring plate 184 to move. The angle of the spring plate 184 will change when it moves. At this time, the spring plate 184 will push the semi-circular frame 182 to deform when it moves, so that the ends of the semi-circular frame 182 move closer to each other. When the semi-circular frame 182 moves, it will push the stabilizing plate 144 and the slider 143 to move closer to each other through the synchronization plate 181. When the stabilizing plate 144 and the slider 143 move, they will push the sensor 11 and the super magnetic vibration source 9 to move closer to each other, so as to ensure that the sensor 11 and the super magnetic vibration source 9 can stably contact the surface of the anchor rod. After the mounting cylinder 4 is removed from the surface of the anchor rod, the sensor 11 and the super magnetic vibration source 9 will move away from each other through the elasticity of the elastic rod 146, so that they will maintain a distance from each other during transportation, and also maintain a distance from the inner wall of the mounting cylinder 4, so as to avoid collision during transportation.

[0033] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A shaft anchor length detection device, comprising a protective frame (1), a sealing door (2) hinged to the top of the protective frame (1), a rubber plate (3) fixedly connected to the inner wall of the protective frame (1), an instrument host (6) disposed inside the protective frame (1), a sensor connection line (7) inserted into the top of the instrument host (6), a sensor (11) inserted into the end of the sensor connection line (7) away from the instrument host (6), a threaded rod (10) rotatably connected to the end of the sensor (11), a supermagnetic source connection line (8) inserted into the top of the instrument host (6), a supermagnetic source (9) inserted into the end of the supermagnetic source connection line (8) away from the instrument host (6), an installation cylinder (4) disposed inside the protective frame (1), and a winding frame (5) fixedly connected to the surface of the installation cylinder (4), characterized in that, Also includes: Mounting component (12) is installed inside mounting cylinder (4). The mounting component (12) is used to connect supermagnetic source (9) and sensor (11) to improve the ease of assembly of supermagnetic source (9) and sensor (11). A fixing component (15) is installed inside the mounting cylinder (4) and is used to fix the mounting cylinder (4) to the surface of the anchor rod. The closing component (18) is installed inside the mounting cylinder (4). The fixing component (15) pushes the mounting component (12) through the closing component (18) to improve the convenience of connecting the super magnetic vibration source (9) and the sensor (11) with the anchor rod.

2. The anchor bolt length detection device for vertical shaft engineering according to claim 1, characterized in that: The sensor connection line (7) and the supermagnetic source connection line (8) are far from the instrument host (6) and pass through the mounting cylinder (4) and extend into the interior of the mounting cylinder (4). The sensor connection line (7) and the supermagnetic source connection line (8) are close to the mounting cylinder (4) and are located inside the winding frame (5). The surface of the winding frame (5) is in contact with the surface of the rubber plate (3). The lower surface of the instrument host (6) is in contact with the surface of the rubber plate (3).

3. The anchor bolt length detection device for vertical shaft engineering according to claim 2, characterized in that: The mounting component (12) includes: Positioning component (13), which is installed inside the mounting cylinder (4), is used to limit the position of the supermagnetic source (9) and the sensor (11); The mounting component (14) is installed inside the positioning component (13). The mounting component (14) is used to assemble and fix the supermagnetic source (9) and the sensor (11), thereby improving the ease of use of the supermagnetic source (9) and the sensor (11).

4. The anchor bolt length detection device for vertical shaft engineering according to claim 3, characterized in that: The positioning component (13) includes a positioning ring (131), the surface of which is fixedly connected to the inner wall of the mounting cylinder (4), and a slide frame (132) is fixedly connected to the inner wall of the positioning ring (131). There are two slide frames (132), and the two slide frames (132) are symmetrically arranged with the positioning ring (131) as the center.

5. The anchor bolt length detection device for vertical shaft engineering according to claim 4, characterized in that: The mounting assembly (14) includes a mounting ring (141), a rubber pad (142) fixedly connected to the inner wall of the mounting ring (141), an elastic rod (146) fixedly connected to the surface of the mounting ring (141), a screw hole rod (145) fixedly connected to the end of the elastic rod (146) away from the mounting ring (141), a stabilizing plate (144) fixedly connected to the surface of the screw hole rod (145), a slider (143) fixedly connected to the surface of the mounting ring (141), the end of the stabilizing plate (144) away from the screw hole rod (145) contacting the inner wall of the slide frame (132), the end of the slider (143) away from the mounting ring (141) contacting the inner wall of the slide frame (132), the inner wall of the rubber pad (142) contacting the surface of the supermagnetic source (9), and the surface of the threaded rod (10) threadedly connected to the inner wall of the screw hole rod (145).

6. The anchor bolt length detection device for vertical shaft engineering according to claim 5, characterized in that: The fixing component (15) includes: A support assembly (16) is installed inside the mounting cylinder (4) and is used to support and limit the mounting cylinder (4). The extrusion assembly (17) is installed inside the support assembly (16) and is used to fix the mounting cylinder (4) to the surface of the anchor rod.

7. The anchor bolt length detection device for vertical shaft engineering according to claim 6, characterized in that: The support assembly (16) includes a support ring (161), the surface of which is fixedly connected to the inner wall of the mounting cylinder (4), and a limiting seat (162) is fixedly connected to the inner wall of the support ring (161). The number of limiting seats (162) is four, and the four limiting seats (162) are arranged circumferentially around the support ring (161).

8. The anchor bolt length detection device for vertical shaft engineering according to claim 7, characterized in that: The extrusion assembly (17) includes a spring rod (171), the end of which is fixedly connected to the surface of the limiting seat (162). An extrusion plate (172) is fixedly connected to the end of the spring rod (171) away from the limiting seat (162). An inclined plate (173) is fixedly connected to the end of the extrusion plate (172). There are four inclined plates (173), which are arranged circumferentially around the support ring (161). The ends of the four inclined plates (173) away from the extrusion plate (172) are arranged away from each other.

9. The anchor bolt length detection device for vertical shaft engineering according to claim 8, characterized in that: The closing component (18) includes a spring plate (184), the end of which is hinged to the surface of the extrusion plate (172). A round rod (183) is hinged to the end of the spring plate (184) away from the extrusion plate (172). A semi-circular frame (182) is hinged to the end of the round rod (183) away from the spring plate (184). Synchronization plates (181) are respectively hinged to both ends of the semi-circular frame (182). The ends of the two synchronization plates (181) away from the semi-circular frame (182) are respectively fixedly connected to the surfaces of the stabilizing plate (144) and the slider (143). There are two round rods (183). The two round rods (183) are arranged vertically inside the mounting cylinder (4). The end of the spring plate (184) away from the round rod (183) is inclined.

10. The detection method of the anchor bolt length detection device for vertical shaft engineering according to claim 9, characterized in that, Includes the following steps: S1: After the threaded rod (10) is installed inside the threaded rod (145), the threaded rod (10) can fix the sensor (11) inside the mounting cylinder (4). After the super magnetic source (9) is inserted into the rubber pad (142), the mounting ring (141) is used to support and limit the super magnetic source (9). The threaded rod (145) is connected to the mounting ring (141) through the elastic rod (146). The elasticity of the elastic rod (146) is used to maintain the distance between the super magnetic source (9) and the sensor (11). S2: Place the installation cylinder (4) on the surface of the anchor rod. At this time, the receiving end of the sensor (11) will contact the end of the anchor rod, and the output end of the super magnetic source (9) will also contact the end of the anchor rod and remain horizontal with the anchor rod. The sensor (11) will transmit the received signal to the instrument host (6) through the sensor connection line (7) to detect the length of the anchor rod embedded in the soil layer. S3: When the installation cylinder (4) is placed on the surface of the anchor rod, the anchor rod will push the compression plate (172) to move away from each other through the inclined plate (173). When the compression plate (172) moves, it will compress the elastic rod (171). At this time, the compression plate (172) can fix the installation cylinder (4) on the surface of the anchor rod through the elasticity of the elastic rod (171). S4: When the semicircular frame (182) moves, it pushes the stabilizing plate (144) and the slider (143) to move closer to each other through the synchronization plate (181). When the stabilizing plate (144) and the slider (143) move, they will push the sensor (11) and the supermagnetic source (9) to move closer to each other, so as to ensure that the sensor (11) and the supermagnetic source (9) can stably contact the surface of the anchor rod.

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