Method and device for stress evaluation of multi-layer bridge demolition construction

Abstract

This invention discloses a method and apparatus for stress assessment during the demolition of multi-story bridges, relating to the field of demolition construction technology. The apparatus includes a mobile mechanism with a detection mechanism, an opening mechanism, and a counterweight mechanism at its top. The mobile mechanism also includes a base, with gear A on its side and gear B at its top. A track A is attached to the top of gear B. A connecting plate is mounted on the left side of the base, and a bottom plate is mounted on the left side of the connecting plate. This allows for precise linkage between a sliding block and an adjusting plate, adjusting the infrared detection head to the optimal detection angle and ensuring the stress plate is in close contact with the ground. This automated detection process reduces manpower requirements and avoids data acquisition chaos caused by multiple manual operations, achieving more efficient and accurate detection results and providing more convenient and reliable technical support for bridge maintenance.

Description

Technical Field

[0001] This invention relates to the field of demolition construction technology, specifically to a method and apparatus for stress assessment during the demolition of multi-story bridges. Background Technology

[0002] With the continuous development of my country's national economy and the ongoing advancement of transportation construction, the demand for urban and highway transportation is increasing day by day, leading to a surge in the need for widening and upgrading bridges. As transportation hubs and lifeline projects, the demolition of bridges has attracted much attention from society and the media.

[0003] Before a bridge is demolished, a comprehensive structural inspection is required, including the strength of the concrete, the corrosion of the reinforcing steel, and the stability of the bridge foundation. Through testing and theoretical calculations, the load-bearing capacity of the bridge must be assessed. This is crucial for determining safety measures during the demolition process and whether the bridge needs to be reinforced.

[0004] However, existing methods and devices for assessing stress during the demolition of multi-story bridges have the following shortcomings:

[0005] 1) The stress state of the bridge before demolition was unknown, which led to cracking and brittle failure during the demolition process. Therefore, it was necessary to conduct tests before demolition. However, the tests required multiple people to conduct them. Due to the long length of the bridge, the tests would require a lot of manpower. Moreover, the simultaneous testing by multiple people could easily lead to the same data being entered, causing confusion.

[0006] 2) Cutting is required during demolition, but since some parts of the structure were covered by concrete during bridge construction, it is necessary to break and open the surface of the detected cutting points to facilitate subsequent cutting work.

[0007] 3) Before use, a counterweight needs to be installed on the hole-opening mechanism. However, due to the simple limit switch, the counterweight may shake and fall off when encountering large bumps during use.

[0008] Therefore, we propose a method and device for stress assessment during the demolition of multi-story bridges to address the problems mentioned above. Summary of the Invention

[0009] The purpose of this invention is to provide a stress assessment device for the demolition of multi-layer bridges, which achieves precise linkage between the sliding block and the adjusting plate to adjust the infrared detection head to the optimal detection angle, ensures that the stress plate is in close contact with the ground, automates the detection task, reduces the need for manpower, avoids the data acquisition chaos caused by multiple manual operations, achieves more efficient and accurate detection results, and provides more convenient and reliable technical support for bridge maintenance, thereby solving the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a multi-layer bridge demolition construction stress assessment device, comprising a moving mechanism, a detection mechanism at the top of the moving mechanism, an opening mechanism at the top of the moving mechanism, and a counterweight mechanism at the top of the moving mechanism.

[0011] The moving mechanism includes a base, a gear A on the side of the base, a gear B on the top of the base, a track A on the top of gear B, a connecting plate on the left side of the base, a base plate on the left side of the connecting plate, a gear C on the side of the base plate, a gear D on the top of the base plate, a track B on the top of gear B, a column on the top of the base, a motor A inside the column, a threaded rod installed at the output end of the motor A, a sliding block on the surface of the threaded rod, and a fixing block A for the sliding block. The fixed block A has a rotating rod A inside, the bottom end of the rotating rod A has a connecting rod, the bottom end of the connecting rod has a rotating rod B, the column has a limit rod inside, the middle of the limit rod has an adjusting plate, the surface of the adjusting plate has an infrared detection head, the back of the adjusting plate has a fixing block B, the right side of the adjusting plate has an electric telescopic rod, the output end of the electric telescopic rod has an installation rod, the surface of the installation rod has a retaining pad, the surface of the installation rod has an installation block, the right side of the installation block has a sensor, and the right side of the sensor has a stress plate.

[0012] Preferably, gear A is disposed at the four corners of the base via side plate A, gear B is fixed to the top of the base via support plate, gear C is disposed at the four corners of the base plate via side plate B, gear D is fixed to the top of the base via support plate, tooth block A is disposed at the top of track A, and tooth block B is disposed at the top of track B.

[0013] Preferably, the motor A is disposed inside the groove A, the sliding block is provided with a threaded groove inside, the sliding block is slidably connected to the column, and the sliding block is rotatably connected to the threaded rod through the threaded groove.

[0014] Preferably, the rotating rod A rotates inside the fixed block A through the rotating groove A, and the connecting rod is rotatably connected to the fixed block A. The rotating rod B rotates inside the fixed block B through the rotating groove B, and the connecting rod is rotatably connected to the fixed block B.

[0015] Preferably, the limiting rod rotates inside the column via the limiting groove, the adjusting plate is rotatably connected to the column via the receiving groove, the mounting block is slidably connected to the mounting rod via the mounting groove, the retaining pads are symmetrically distributed at the front and rear ends of the mounting rod, and the mounting block is slidably connected to the retaining pads via the mounting groove.

[0016] Preferably, a bracket is provided at the top of the base plate, a top plate is provided at the top of the bracket, a hydraulic cylinder is provided at the top of the top plate, a sliding plate is installed at the output end of the hydraulic cylinder, a slider is installed on the side of the sliding plate, a motor B is provided at the top of the sliding plate, a rotating rod A is installed at the output end of the motor B, and a drill bit is provided at the bottom end of the rotating rod A.

[0017] Preferably, the brackets are symmetrically distributed at the front and rear ends of the top of the base plate, the slider is slidably connected to the bracket through a sliding groove, the sliding plate slides in the middle of the bracket, the hydraulic cylinder is installed at the top of the top plate through a fixing groove, the motor B is fixed to the top of the sliding plate through a groove B, and the rotating rod A rotates at the top of the sliding plate through a rotating groove A.

[0018] Preferably, a limit block is provided at the top of the base plate, a counterweight is provided at the top of the base plate, a rotating rod B is provided at the top of the counterweight, a handle is provided on the surface of the rotating rod B, a protrusion is provided at the bottom of the counterweight, a pressing block is provided inside the counterweight, a pressing plate is fixedly installed on the surface of the pressing block, a linkage plate is provided on the back of the pressing block, a locking block is provided on the surface of the linkage plate, and a spring is installed on the back of the linkage plate.

[0019] Preferably, the counterweight and the limiting block are slidably connected, the rotating rod B rotates inside the counterweight through the rotating groove B, the handle is housed inside the counterweight through the groove C, the pressing block slides inside the counterweight through the sliding groove A, the locking block slides inside the protrusion through the sliding groove B, the spring is slidably connected to the protrusion, the protrusion slides inside the counterweight through the locking groove A, and the locking block slides inside the counterweight through the locking groove B.

[0020] The method for using the stress assessment device for the demolition of multi-story bridges includes the following steps:

[0021] Step 1: Position transfer is achieved through the coordinated work of gears A, B, C, and D. The motor drives gears A and B to rotate, which in turn causes track A and toothed block A to rotate on the base. At the same time, gears C and D drive track B and toothed block B to rotate synchronously, so that the equipment can move smoothly to the designated position on the base.

[0022] Step 2: After the equipment is moved into place, the detection mechanism is started. Motor A drives the threaded rod to rotate, and the sliding block slides down the column through the threaded groove. Then, through rotating rod A and rotating rod B, the adjusting plate is rotated and perpendicular to the ground. Subsequently, the electric telescopic rod pushes the stress plate to fit the ground. The sensor detects the stress on the stress plate and transmits the data to complete the accurate detection of the bridge condition.

[0023] Step 3: After the inspection is completed, start the drilling mechanism to perform drilling operations. Motor B drives the rotating rod A to rotate, and the drill bit rotates accordingly to open the hole. At the same time, the hydraulic cylinder pushes the sliding plate down, and the slider slides along the inner side of the bracket to ensure that the drill bit contacts and penetrates deep into the ground, achieving efficient drilling.

[0024] Step 4: Before use, the counterweight mechanism needs to be stacked to enhance stability. By using the handle and rotating rod B, the counterweight blocks are stacked in sequence and locked in place. The design of the pressing plate and locking block ensures a firm connection between the counterweight blocks, which facilitates the handling and installation of the equipment. At the same time, the counterweight blocks can be quickly released during disassembly, improving the overall work efficiency.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This invention utilizes a detection mechanism, column, groove A, motor A, threaded rod, sliding block, threaded groove, fixed block A, rotating groove A, rotating rod A, connecting rod, rotating rod B, storage groove, limiting groove, limiting rod, adjusting plate, infrared detection head, fixed block B, rotating groove B, electric telescopic rod, mounting rod, pad, mounting block, mounting groove, sensor, and stress plate to achieve precise linkage between the sliding block and the adjusting plate. This allows for adjustment of the infrared detection head to the optimal detection angle, ensuring the stress plate is tightly attached to the ground. The invention automates the detection task, reduces manpower requirements, avoids data acquisition chaos caused by multiple manual operations, and achieves more efficient and accurate detection results, providing more convenient and reliable technical support for bridge maintenance.

[0027] 2. This invention achieves efficient and precise hole drilling through a hole-drilling mechanism, bracket, chute, top plate, fixed groove, hydraulic cylinder, sliding plate, slider, groove B, rotating groove A, motor B, rotating rod A, and drill bit. First, motor B is started to drive the drill bit to rotate, and then the hydraulic cylinder pushes the sliding plate down. The slider and chute ensure precise positioning. The hole is drilled as soon as the drill bit touches the ground, creating favorable conditions for subsequent cutting by the cutting chain. This improves the hole-drilling speed and accuracy, simplifies the pre-cutting preparation process, and improves construction efficiency and safety, bringing revolutionary convenience to bridge demolition work.

[0028] 3. This invention achieves a stable connection between counterweight blocks through a protrusion, sliding groove A, sliding groove B, pressing block, pressing plate, linkage plate, locking block, spring, locking groove A, and locking groove B. During installation, simply stack the counterweight blocks and press them down. The locking block's inclined surface slides under force, and the spring force achieves self-locking, effectively preventing the counterweight blocks from falling off due to bumps and shaking during use. This improves the safety of the equipment, ensures a stable and reliable construction process, and provides a more solid safety guarantee for bridge demolition operations. Attached Figure Description

[0029] Figure 1 This is a three-dimensional view of the main structure in the stress assessment method and device for demolition of multi-story bridges of the present invention;

[0030] Figure 2 This is an exploded perspective view of the moving mechanism in the stress assessment method and device for demolition of multi-story bridges of the present invention.

[0031] Figure 3 This is an exploded perspective view of the detection mechanism in the stress assessment method and device for demolition of multi-story bridges of the present invention.

[0032] Figure 4 The present invention relates to a method and apparatus for stress assessment during the demolition of multi-story bridges. Figure 3 Enlarged 3D view of the structure at point A in the middle;

[0033] Figure 5 The present invention relates to a method and apparatus for stress assessment during the demolition of multi-story bridges. Figure 3 Enlarged 3D view of the structure at point B in the middle;

[0034] Figure 6 This is an exploded perspective view of the counterweight mechanism in the stress assessment method and device for demolition of multi-story bridges of the present invention.

[0035] Figure 7 The present invention relates to a method and apparatus for stress assessment during the demolition of multi-story bridges. Figure 6 Enlarged 3D view of the structure at point C.

[0036] In the diagram: 1. Moving mechanism; 101. Base; 102. Side plate A; 103. Gear A; 104. Support plate A; 105. Gear B; 106. Track A; 107. Tooth block A; 108. Connecting plate; 109. Base plate; 110. Side plate B; 111. Gear C; 112. Support plate B; 113. Gear D; 114. Track B; 115. Tooth block B; 2. Detection mechanism; 201 202. Column; 203. Groove A; 204. Motor A; 205. Threaded rod; 206. Sliding block; 207. Threaded groove; 208. Fixing block A; 209. Rotating groove A; 200. Rotating rod A; 210. Connecting rod; 211. Rotating rod B; 212. Storage groove; 213. Limiting groove; 214. Limiting rod; 215. Adjusting plate; 216. Infrared detection head; 217. Fixing block B; 218. Rotary groove B; 219. Electric telescopic rod; 220. Mounting rod; 221. Wafer; 222. Mounting block; 223. Mounting groove; 224. Sensor; 225. Stress plate; 3. Hole opening mechanism; 301. Bracket; 302. Slide groove; 303. Top plate; 304. Fixing groove; 305. Hydraulic cylinder; 306. Sliding plate; 307. Slider; 308. Groove B; 309. Rotating groove A; 310 1. Motor B; 311. Rotating rod A; 312. Drill bit; 4. Counterweight mechanism; 401. Limiting block; 402. Counterweight block; 403. Groove C; 404. Rotating groove B; 405. Rotating rod B; 406. Handle; 5. Protrusion; 6. Sliding groove A; 7. Sliding groove B; 8. Pressing block; 9. Pressing plate; 10. Linkage plate; 11. Locking block; 12. Spring; 13. Locking groove A; 14. Locking groove B. Detailed Implementation

[0037] 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.

[0038] Please see the appendix Figure 1 -Appendix Figure 7 As shown, the present invention provides a technical solution: a multi-layer bridge demolition construction stress assessment device, including a moving mechanism, a detection mechanism at the top of the moving mechanism, an opening mechanism at the top of the moving mechanism, and a counterweight mechanism at the top of the moving mechanism.

[0039] Example 1, according to Figures 1-5The moving mechanism 1 shown includes a base 101. A gear A103 is mounted on the side of the base 101, a gear B105 is mounted on the top of the base 101, and a track A106 is mounted on the top of the gear B105. A connecting plate 108 is mounted on the left side of the base 101, and a base plate 109 is mounted on the left side of the connecting plate 108. A gear C111 is mounted on the side of the base plate 109, a gear D113 is mounted on the top of the base plate 109, and a track B114 is mounted on the top of the gear B105. A column 201 is mounted on the top of the base 101, and a motor A203 is installed inside the column 201. A threaded rod 204 is mounted on the output end of the motor A203, and a sliding block 205 is mounted on the surface of the threaded rod 204. The fixed block A207 has a rotating rod A209 inside, a connecting rod 210 at the bottom of the rotating rod A209, a rotating rod B211 at the bottom of the connecting rod 210, a limit rod 214 inside the column 201, an adjusting plate 215 in the middle of the limit rod 214, an infrared detection head 216 on the surface of the adjusting plate 215, a fixed block B217 on the back of the adjusting plate 215, an electric telescopic rod 219 on the right side of the adjusting plate 215, an installation rod 220 installed at the output end of the electric telescopic rod 219, a retaining pad 221 on the surface of the installation rod 220, an installation block 222 on the surface of the installation rod 220, and a sensor 22 on the right side of the installation block 222. 4. A stress plate 225 is provided on the right side of sensor 224. Gear A103 is set at the four corners of base 101 via side plate A102. Gear B105 is fixed to the top of base 101 via support plate. Gear C111 is set at the four corners of base plate 109 via side plate B110. Gear D113 is fixed to the top of base 101 via support plate. Tooth block A107 is provided at the top of track A106. Tooth block B115 is provided at the top of track B114. Motor A203 is set inside groove A202 via groove A202. Threaded groove 206 is provided inside sliding block 205. Sliding block 205 is slidably connected to column 201. Sliding block 205 is connected to threaded rod 20 via threaded groove 206. The four components are rotatably connected. Rotating rod A209 rotates inside fixed block A207 through rotating groove A208. Connecting rod 210 is rotatably connected to fixed block A207. Rotating rod B211 rotates inside fixed block B217 through rotating groove B218. Connecting rod 210 is rotatably connected to fixed block B217. Limiting rod 214 rotates inside column 201 through limiting groove 213. Adjusting plate 215 is rotatably connected to column 201 through storage groove 212. Mounting block 222 is slidably connected to mounting rod 220 through mounting groove 223. Pads 221 are symmetrically distributed at the front and rear ends of mounting rod 220. Mounting block 222 is slidably connected to pads 221 through mounting groove 223.

[0040] The overall effect of Embodiment 1 is as follows: it achieves a high degree of automation and precise control. The coordinated work of gears A103, B105, C111, and D113 with tracks A106 and B114 ensures stable movement and precise positioning of the equipment. Motor A203 drives threaded rod 204, which, together with sliding block 205 and fixed block, enables flexible lifting and precise adjustment of detection mechanism 2. The design of infrared detection head 216, electric telescopic rod 219, etc., improves detection efficiency and accuracy, enhances the efficiency and safety of bridge inspection and construction, and brings innovative improvements to the field of bridge maintenance.

[0041] Example 2, according to Figure 1 , Figure 2 The base plate 109 shown has a bracket 301 at its top, a top plate 303 at its top, a hydraulic cylinder 305 at its top, a sliding plate 306 at its output end, a slider 307 on its side, a motor B310 at its top, a rotating rod A311 at its output end, and a drill bit 312 at its bottom end. The bracket 301 is symmetrically distributed at the front and rear ends of the top of the base plate 109. The slider 307 is slidably connected to the bracket 301 through a sliding groove 302. The sliding plate 306 slides in the middle of the bracket 301. The hydraulic cylinder 305 is installed at the top of the top plate 303 through a fixing groove 304. The motor B310 is fixed to the top of the sliding plate 306 through a groove B308. The rotating rod A311 rotates at the top of the sliding plate 306 through a rotating groove A309.

[0042] The overall effect of Embodiment 2 is as follows: it achieves efficient and precise positioning and flexible adjustment of the drill bit 312; the bracket 301 and the top plate 303 provide stable support for the hydraulic cylinder 305, ensuring that the drill bit 312 can maintain efficient operation even in complex environments; the hydraulic cylinder 305 drives the sliding plate 306 to move up and down, and with the design of the slider 307 and the groove 302, it achieves precise adjustment of the height of the drill bit 312 to adapt to different working conditions; the motor B310 drives the rotating rod A311 to rotate the drill bit 312, providing powerful power for hole drilling, improving hole drilling efficiency and accuracy, and enhancing the adaptability and stability of the equipment, providing a more reliable and efficient solution for projects such as bridge demolition.

[0043] Example 3, according to Figure 1 , Figure 2 , Figure 6 , Figure 7The base plate 109 shown has a limit block 401 at its top and a counterweight 402 at its top. A rotating rod B405 is located at the top of the counterweight 402, and a handle 406 is provided on the surface of the rotating rod B405. A protrusion 5 is located at the bottom of the counterweight 402. A pressing block 8 is located inside the counterweight 402, and a pressing plate 9 is fixedly installed on the surface of the pressing block 8. A linkage plate 10 is located on the back of the pressing block 8, and a locking block 11 is located on the surface of the linkage plate 10. A spring 12 is installed on the back of the linkage plate 10. The counterweight 402 and the limit block 402 are connected. The position blocks 401 are slidably connected. The rotating rod B405 rotates inside the counterweight block 402 through the rotating groove B404. The handle 406 is housed inside the counterweight block 402 through the groove C403. The pressing block 8 slides inside the counterweight block 402 through the sliding groove A6. The locking block 11 slides inside the protrusion 5 through the sliding groove B7. The spring 12 is slidably connected to the protrusion 5. The protrusion 5 slides inside the counterweight block 402 through the locking groove A13. The locking block 11 slides inside the counterweight block 402 through the locking groove B14.

[0044] The overall effect of Embodiment 3 is as follows: it achieves stable and convenient operation of the equipment during operation; the counterweight 402 enhances the stability of the equipment and reduces vibration; the rotating rod B405 and the handle 406 are designed to facilitate the transfer and adjustment of the equipment position; the linkage plate 10, the locking block 11, the spring 12 and the protrusion 5 work together to achieve the rapid installation and stable locking of the counterweight 402, while facilitating the storage and transportation of the equipment, improving the safety and convenience of the equipment, and enhancing its adaptability and stability under different working conditions, providing a more efficient and safer solution for bridge demolition and other related operations.

[0045] The working principle of the entire device is as follows: During the movement phase, the moving mechanism 1 is first placed in the required position, and then the gear A103 on the surface of the side plate A102 is activated. At this time, the gear A103 and the gear B105 on the surface of the support plate A104 drive the track A106 and the toothed block A107 to rotate on the surface of the base 101. At this time, the base 101 drives the bottom plate 109 to move together through the connecting plate 108, and the gear C111 on the surface of the side plate B110 and the gear D113 on the surface of the support plate B112 drive the track B114 and the toothed block B115 to rotate together to achieve the movement effect. When it moves to the required position, it is ready to move.

[0046] During the testing phase, the testing mechanism 2 is activated. At this time, the motor A203 inside the groove A202 drives the threaded rod 204 to rotate, causing the threaded rod 204 to rotate through the threaded groove 206 inside the sliding block 205. This causes the sliding block 205 to slide downwards inside the column 201. Simultaneously, the sliding block 205, through the rotating rod A209, drives the connecting rod 210 to slide downwards together, causing the rotating rod A209 to rotate through the rotating groove A208 inside the fixed block A207. This causes the connecting rod 210, through the rotating rod B211, to drive the adjusting plate 215 to rotate together. At this time, the rotating rod B211 rotates through the rotating groove B218 inside the fixed block B217, and the limiting rod 214 rotates through the limiting groove 213 inside the column 201. The adjusting plate 215 is then retracted... The groove 212 rotates inward inside the column 201. When the adjusting plate 215 is fully rotated, the infrared detection head 216 can be made perpendicular to the ground. Then, the electric telescopic rod 219 is activated, which drives the stress plate 225 to slide downward together. When the stress plate 225 is in contact with the ground, detection can begin, and the detected stress is transmitted through the sensor 224. When the stress plate 225 needs to be replaced after a long period of use, first pinch the sensor 224 and pull it to the right, so that the mounting block 222 slides to the right on the surface of the mounting rod 220 through the mounting groove 223. At this time, the mounting block 222 slides out of the surface of the pad 221 through the mounting groove 223. When the mounting block 222 has completely slid out of the surface of the mounting rod 220, the stress plate 225 can be replaced.

[0047] During the drilling stage, after the inspection is completed, the drill bit 312 can be aligned with the cut point that has been inspected, and the drilling mechanism 3 can be started. The motor B310 inside the groove B308 drives the rotating rod A311 to rotate together, and the rotating rod A311 drives the drill bit 312 to rotate together through the rotating groove A309. Then, the hydraulic cylinder 305, which is fixed inside the top plate 303 through the fixing groove 304, is started, and the hydraulic cylinder 305 drives the sliding plate 306 to slide downward. At this time, the slider 307 slides downward inside the bracket 301 through the sliding groove 302. When the drill bit 312 contacts the ground, the drilling can begin.

[0048] During the counterweight stacking stage, before use, the counterweight mechanism 4 needs to be stacked. First, pinch the handle 406 and pull upwards, causing the handle 406 to rotate upwards via the rotating rod B405. The rotating rod B405 then rotates upwards inside the counterweight block 402 via the rotating groove B404. Once the handle 406 is completely perpendicular to the top of the counterweight block 402 via the groove C403, the worker can use the handle 406 to move the counterweight block 402 and place it on the top of the top plate 303. The limiting block 401 then fixes the first counterweight block 402 to the top of the bottom plate 109. When stacking, first align the protrusion 5 at the bottom of the second counterweight block 402 with the slot A13 of the first counterweight block 402, and press downwards, causing the protrusion 5 to slide into the first counterweight block 402 through the slot A13. Inside the counterweight 402, the locking block 11, under pressure from the inclined surface, slides into the protrusion 5 via the sliding groove A6. When the protrusion 5 is fully slid into the first counterweight 402 via the groove A13, the locking block 11 slides into the groove B14 via the linkage plate 10 under the elastic force of the spring 12. When the locking block 11 is fully slid into the counterweight 402 via the groove B14, it can complete the self-locking. When disassembly is required after use, pinch the pressing plate 9 and press it into the counterweight 402, so that the pressing plate 9 drives the pressing block 8 to slide together. At this time, the pressing block 8 slides into the counterweight 402 via the sliding groove B7, and drives the locking block 11 to slide into the protrusion 5 via the linkage plate 10, so that the counterweight 402 can be disassembled.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stress assessment device for the demolition of multi-story bridges, characterized in that: It includes a moving mechanism (1), a detection mechanism (2) is provided at the top of the moving mechanism (1), an opening mechanism (3) is provided at the top of the moving mechanism (1), and a counterweight mechanism (4) is provided at the top of the moving mechanism (1). The moving mechanism (1) includes a base (101), a gear A (103) is provided on the side of the base (101), a gear B (105) is provided on the top of the base (101), a track A (106) is provided on the top of the gear B (105), a connecting plate (108) is installed on the left side of the base (101), a base plate (109) is installed on the left side of the connecting plate (108), a gear C (111) is provided on the side of the base plate (109), and the base plate (109) is provided with a gear C (111) on the side of the base plate (109). A gear D (113) is provided at the top of the plate (109), a track B (114) is provided at the top of the gear B (105), a column (201) is provided at the top of the base (101), a motor A (203) is provided inside the column (201), a threaded rod (204) is installed at the output end of the motor A (203), a sliding block (205) is provided on the surface of the threaded rod (204), and a fixing block A (205) is fixedly installed on the surface of the sliding block (205). 07), the fixed block A (207) is provided with a rotating rod A (209) inside, the bottom end of the rotating rod A (209) is provided with a connecting rod (210), the bottom end of the connecting rod (210) is provided with a rotating rod B (211), the column (201) is provided with a limiting rod (214) inside, the middle of the limiting rod (214) is provided with an adjusting plate (215), the surface of the adjusting plate (215) is provided with an infrared detection head (216), the back of the adjusting plate (215) is provided with an infrared detection head (216), and the back of the adjusting plate (215) is provided with an infrared detection head (216). A fixing block B (217) is provided on the surface of the adjustment plate (215). An electric telescopic rod (219) is provided on the right side of the adjustment plate (215). An installation rod (220) is installed at the output end of the electric telescopic rod (219). A retaining pad (221) is provided on the surface of the installation rod (220). An installation block (222) is provided on the surface of the installation rod (220). A sensor (224) is provided on the right side of the installation block (222). A stress plate (225) is provided on the right side of the sensor (224). The gear A (103) is set at the four corners of the base (101) via the side plate A (102), the gear B (105) is fixed to the top of the base (101) via the support plate A (104), the gear C (111) is set at the four corners of the bottom plate (109) via the side plate B (110), the gear D (113) is fixed to the top of the base (101) via the support plate B (112), the top of the track A (106) is provided with a tooth block A (107), and the top of the track B (114) is provided with a tooth block B (115). The motor A (203) is located inside the groove A (202), and the sliding block (205) is provided with a threaded groove (206). The sliding block (205) is slidably connected to the column (201), and the sliding block (205) is rotatably connected to the threaded rod (204) through the threaded groove (206). The top of the base plate (109) is provided with a bracket (301), the top of the bracket (301) is provided with a top plate (303), the top of the top plate (303) is provided with a hydraulic cylinder (305), the output end of the hydraulic cylinder (305) is provided with a sliding plate (306), the side of the sliding plate (306) is provided with a slider (307), the top of the sliding plate (306) is provided with a motor B (310), the output end of the motor B (310) is provided with a rotating rod A (311), and the bottom end of the rotating rod A (311) is provided with a drill bit (312). The bottom plate (109) is provided with a limit block (401) at the top and a counterweight block (402) at the top. The top of the counterweight block (402) is provided with a rotating rod B (405). The surface of the rotating rod B (405) is provided with a handle (406). The bottom end of the counterweight block (402) is provided with a protrusion (5). The inside of the counterweight block (402) is provided with a pressing block (8). The surface of the pressing block (8) is fixedly installed with a pressing plate (9). The back of the pressing block (8) is provided with a linkage plate (10). The surface of the linkage plate (10) is provided with a locking block (11). The back of the linkage plate (10) is provided with a spring (12).

2. The stress assessment device for the demolition of multi-story bridges according to claim 1, characterized in that: The rotating rod A (209) rotates inside the fixed block A (207) through the rotating groove A (208), and the connecting rod (210) is rotatably connected to the fixed block A (207). The rotating rod B (211) rotates inside the fixed block B (217) through the rotating groove B (218), and the connecting rod (210) is rotatably connected to the fixed block B (217).

3. The stress assessment device for the demolition of multi-story bridges according to claim 1, characterized in that: The limiting rod (214) rotates inside the column (201) through the limiting groove (213). The adjusting plate (215) is rotatably connected to the column (201) through the storage groove (212). The mounting block (222) is slidably connected to the mounting rod (220) through the mounting groove (223). The retaining pads (221) are symmetrically distributed at the front and rear ends of the mounting rod (220). The mounting block (222) is slidably connected to the retaining pads (221) through the mounting groove (223).

4. The stress assessment device for the demolition of multi-story bridges according to claim 1, characterized in that: The brackets (301) are symmetrically distributed at the front and rear ends of the top of the base plate (109). The slider (307) is slidably connected to the bracket (301) through the sliding groove (302). The sliding plate (306) slides in the middle of the bracket (301). The hydraulic cylinder (305) is installed at the top of the top plate (303) through the fixing groove (304). The motor B (310) is fixed at the top of the sliding plate (306) through the groove B (308). The rotating rod A (311) rotates at the top of the sliding plate (306) through the rotating groove A (309).

5. The stress assessment device for the demolition of multi-story bridges according to claim 1, characterized in that: The counterweight (402) is slidably connected to the limiting block (401). The rotating rod B (405) rotates inside the counterweight (402) through the rotating groove B (404). The handle (406) is housed inside the counterweight (402) through the groove C (403). The pressing block (8) slides inside the counterweight (402) through the sliding groove A (6). The locking block (11) slides inside the protrusion (5) through the sliding groove B (7). The spring (12) is slidably connected to the protrusion (5). The protrusion (5) slides inside the counterweight (402) through the locking groove A (13). The locking block (11) slides inside the counterweight (402) through the locking groove B (14).

6. The method of using a stress assessment device for the demolition of multi-story bridges, characterized in that: Using the multi-story bridge demolition stress assessment device according to claim 5 includes the following steps: S1: Position transfer is achieved through the coordinated work of gears A (103), B (105), C (111), and D (113). The motor drives gears A (103) and B (105) to rotate, and the track A (106) and tooth block A (107) rotate on the base (101). At the same time, gears C (111) and D (113) drive track B (114) and tooth block B (115) to rotate synchronously, so that the device can move smoothly to the designated position. S2: When the device is moved into place, the detection mechanism (2) is started. Motor A (203) drives the threaded rod (204) to rotate. Through the threaded groove (206), the sliding block (205) slides down in the column (201). Then, through the rotating rod A (209) and rotating rod B (211), the adjusting plate (215) is rotated and perpendicular to the ground. Subsequently, the electric telescopic rod (219) pushes the stress plate (225) to fit against the ground. The sensor (224) detects the stress on the stress plate (225) and transmits data to complete the accurate detection of the bridge condition. S3: After the inspection is completed, start the hole-opening mechanism (3) to carry out the drilling operation. Motor B (310) drives the rotating rod A (311) to rotate, and the drill bit (312) rotates accordingly to open the hole. At the same time, the hydraulic cylinder (305) pushes the sliding plate (306) down, and the slider (307) slides along the inner side of the bracket (301) to ensure that the drill bit (312) contacts and penetrates into the ground to achieve efficient drilling. S4: Before use, the counterweight mechanism (4) needs to be stacked to enhance stability. Through the cooperation of the handle (406) and the rotating rod B (405), the counterweight blocks (402) are stacked in sequence and self-locked. The design of the pressing plate (9) and the locking block (11) ensures a firm connection between the counterweight blocks (402), which facilitates the handling and installation of the equipment. At the same time, the counterweight blocks (402) can be quickly released during disassembly, which improves the overall work efficiency.

Images