Multi-layer bridge demolition construction stress assessment method and device

Abstract

The invention discloses a multilayer bridge demolition construction stress assessment method and device, and relates to the technical field of demolition construction.The device comprises a moving mechanism, a detection mechanism is arranged at the top end of the moving mechanism, a trepanning mechanism is arranged at the top end of the moving mechanism, a balance weight mechanism is arranged at the top end of the moving mechanism, and the moving mechanism comprises a base; a gear A is arranged on the side face of the base, a gear B is arranged at the top end of the base, and a crawler belt A is arranged at the top end of the gear B. A connecting plate is installed on the left side of the base, and a bottom plate is installed on the left side of the connecting plate, so that accurate linkage of the sliding block and the adjusting plate is achieved, and the infrared detection head is adjusted to the optimal detection angle. According to the invention, the stress piece is ensured to be tightly attached to the ground, the detection task is automatically completed, the manpower demand is reduced, the problem of data acquisition confusion caused by simultaneous operation of multiple workers is avoided, a more efficient and accurate detection effect is realized, and a more convenient and reliable technical support is provided for bridge maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of demolition construction, and specifically to a method and device for stress evaluation in the demolition construction of multi-layer bridges. Background Technique

[0002] With the continuous development of China's social national economy and the continuous advancement of transportation construction, the demand for urban and highway transportation is increasing day by day, and the demand for bridge widening and upgrading has increased sharply. As a transportation hub and lifeline project, the demolition of bridges has attracted much attention from society and public opinion.

[0003] Before the bridge demolition, it is necessary to conduct a comprehensive inspection of the bridge structure, including the strength of concrete, the corrosion condition of steel bars, the foundation stability of the bridge, etc., and evaluate the bearing capacity of the bridge through testing and theoretical calculation. This is very important for determining safety measures during the demolition process and whether the bridge needs to be reinforced.

[0004] However, the existing methods and devices for stress evaluation in the demolition construction of multi-layer bridges have the following deficiencies:

[0005] 1) The stress state of the bridge before demolition is unknown, resulting in cracking and brittle failure during the demolition process. Therefore, it is necessary to conduct inspections before demolition. However, during the inspection, multiple workers are required for inspection. Due to the long mileage of the bridge, a large amount of manpower is consumed during the inspection, and it is very easy for the inspection data to be entered repeatedly and cause chaos when multiple workers conduct inspections simultaneously.

[0006] 2) Cutting is required during demolition. However, since some structures are covered by concrete during bridge construction, it is necessary to break and open holes on the surface of the detected cutting points to facilitate subsequent cutting work.

[0007] 3) Before use, it is necessary to install a counterweight block for the hole-opening mechanism. However, due to simple limiting, when encountering large bumps during use, the counterweight block will shake and cause the counterweight block to fall off.

[0008] Therefore, we have proposed a method and device for stress evaluation in the demolition construction of multi-layer bridges to solve the problems raised above. Summary of the Invention

[0009] The purpose of the present invention is to provide a device for stress evaluation in the demolition construction of multi-layer bridges, which realizes the precise linkage between the sliding block and the adjusting plate, so as to adjust the infrared detection head to the best detection angle, ensure that the stress sheet is closely attached to the ground, automatically complete the detection task, reduce the manpower requirement, avoid the problem of data acquisition chaos caused by simultaneous operation of multiple workers, and achieve a more efficient and accurate detection effect, providing more convenient and reliable technical support for bridge maintenance, so as to solve the problems raised in the above background technique.

[0010] To achieve the above object, the present invention provides the following technical solutions: a stress evaluation device for multi-layer bridge demolition construction, including a moving mechanism, a detection mechanism is arranged at the top of the moving mechanism, a hole-opening mechanism is arranged at the top of the moving mechanism, and a counterweight mechanism is arranged at the top of the moving mechanism;

[0011] The moving mechanism includes a base, a gear A is arranged on the side of the base, a gear B is arranged at the top of the base, a crawler A is arranged at the top of the gear B, a connecting plate is installed on the left side of the base, a bottom plate is installed on the left side of the connecting plate, a gear C is arranged on the side of the bottom plate, a gear D is arranged at the top of the bottom plate, a crawler B is arranged at the top of the gear B, a column is arranged at the top of the base, a motor A is arranged inside the column, a threaded rod is installed at the output end of the motor A, a sliding block is arranged on the surface of the threaded rod, a fixed block A of the sliding block, a rotating rod A is arranged inside the fixed block A, a connecting rod is arranged at the bottom of the rotating rod A, a rotating rod B is arranged at the bottom of the connecting rod, a limiting rod is arranged inside the column, an adjusting plate is arranged in the middle of the limiting rod, an infrared detection head is arranged on the surface of the adjusting plate, a fixed block B is arranged on the back of the adjusting plate, an electric telescopic rod is arranged on the right side of the adjusting plate, an installation rod is installed at the output end of the electric telescopic rod, a clamping pad is arranged on the surface of the installation rod, an installation block is arranged on the surface of the installation rod, a sensor is arranged on the right side of the installation block, and a strain gauge is arranged on the right side of the sensor.

[0012] Preferably, the gear A is arranged at the four corners of the base through a side plate A, the gear B is fixed to the top of the base through a support plate, the gear C is arranged at the four corners of the bottom plate through a side plate B, the gear D is fixed to the top of the base through a support plate, tooth blocks A are arranged at the top of the crawler A, and tooth blocks B are arranged at the top of the crawler B.

[0013] Preferably, the motor A is arranged inside the groove A through the groove A, a threaded groove is arranged inside the sliding block, the sliding block is slidably connected with the column, and the sliding block is rotationally connected with the threaded rod through the threaded groove.

[0014] Preferably, the rotating rod A rotates inside the fixed block A through a rotating groove A, the connecting rod is rotationally connected with the fixed block A, the rotating rod B rotates inside the fixed block B through a rotating groove B, and the connecting rod is rotationally connected with the fixed block B.

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

[0016] Preferably, a bracket is provided at the top end of the bottom plate, a top plate is provided at the top end of the bracket, a hydraulic cylinder is provided at the top end of the top plate, a sliding plate is installed at the output end of the hydraulic cylinder, a slider is installed on the side surface of the sliding plate, a motor B is provided at the top end 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 end of the bottom plate, the slider is slidably connected to the bracket through a chute, the sliding plate slides in the middle of the bracket, the hydraulic cylinder is installed at the top end of the top plate through a fixing groove, the motor B is fixed to the top end of the sliding plate through a groove B, and the rotating rod A rotates at the top end of the sliding plate through a rotating groove A.

[0018] Preferably, a limiting block is provided at the top end of the bottom plate, a counterweight block is provided at the top end of the bottom plate, a rotating rod B is provided at the top end of the counterweight block, a handle is provided on the surface of the rotating rod B, a convex block is provided at the bottom end of the counterweight block, a pressing block is provided inside the counterweight block, a pressing plate is fixedly installed on the surface of the pressing block, a linkage plate is provided at the back of the pressing block, a clamping block is provided on the surface of the linkage plate, and a spring is installed at the back of the linkage plate.

[0019] Preferably, the counterweight block is slidably connected to the limiting block, the rotating rod B rotates inside the counterweight block through a rotating groove B, the handle is received inside the counterweight block through a groove C, the pressing block slides inside the counterweight block through a sliding groove A, the clamping block slides inside the convex block through a sliding groove B, the spring is slidably connected to the convex block, the convex block slides inside the counterweight block through a card slot A, and the clamping block slides inside the counterweight block through a card slot B.

[0020] The usage method of the multi-layer bridge demolition construction stress evaluation device includes the following steps:

[0021] Step 1: Achieve position transfer through the coordinated operation of Gear A, Gear B, Gear C, and Gear D. The motor drives Gear A and Gear B to rotate, rotates on the base through Track A and Tooth Block A, and at the same time, Gear C and Gear D drive Track B and Tooth Block B to rotate synchronously, so that the device moves smoothly on the base to the designated position;

[0022] Step 2: After the device moves into place, start the detection mechanism. Motor A drives the threaded rod to rotate. Through the threaded groove, the sliding block slides down in the column. Then, through rotating rod A and rotating rod B, the adjusting plate is driven to rotate and be perpendicular to the ground. Subsequently, the electric telescopic rod pushes the stress-responsive piece to fit the ground, and the sensor detects the stress of the stress-responsive piece and transmits data to complete the precise detection of the bridge condition;

[0023] Step 3: After the detection is completed, start the hole-opening mechanism for drilling operations. Motor B drives rotating rod A to rotate, and the drill bit rotates accordingly to open a 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 the ground to achieve efficient drilling;

[0024] Step 4: Before use, stack the counterweight mechanism to enhance stability. Through the cooperation of the handle and rotating rod B, stack the counterweight blocks in sequence and lock them self-locking. The design of the pressing plate and the clamping block ensures the firm connection between the counterweight blocks, facilitating the handling and installation of the device. At the same time, the counterweight blocks can be quickly released during disassembly, improving the overall operation efficiency.

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

[0026] 1. The present invention realizes the precise linkage between the sliding block and the adjusting plate through the 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, cushion, mounting block, mounting groove, sensor and stress-responsive piece, so as to adjust the infrared detection head to the best detection angle, ensure that the stress-responsive piece closely fits the ground, automatically complete the detection task, reduce the manpower requirement, avoid the problem of data acquisition chaos caused by multiple manual operations at the same time, and achieve a more efficient and accurate detection effect, providing more convenient and reliable technical support for bridge maintenance.

[0027] 2. The present invention realizes efficient and precise hole opening through the hole-opening 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, start motor B to drive the drill bit to rotate, and then the hydraulic cylinder pushes the sliding plate down. Use the slider and chute to ensure precise positioning. The drill bit starts to open a hole as soon as it touches the ground, creating good conditions for the subsequent cutting chain to cut, improving the hole-opening speed and accuracy, simplifying the preparation process before cutting, improving the construction efficiency and safety, and bringing revolutionary convenience to the bridge demolition work.

[0028] 3. The present invention realizes a stable connection between the counterweight blocks through the protrusion, sliding groove A, sliding groove B, pressing block, pressing plate, linkage plate, clamping block, spring, clamping groove A and clamping groove B. During installation, the counterweight blocks only need to be stacked and pressed down, and self-locking can be achieved by utilizing the inclined sliding force of the clamping block and the elastic force of the spring, which effectively prevents the counterweight blocks from falling off due to bumps and shaking during use, thereby improving the safety of equipment use, ensuring the stability and reliability of the construction process, and providing a more solid safety guarantee for bridge demolition operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A main structural stereogram of the method and device for stress assessment in demolition construction of a multi-layer bridge according to the present invention;

[0030] Figure 2 It is an exploded stereogram of the moving mechanism in the stress assessment method and device for demolition construction of a multi-story bridge of the present invention;

[0031] Figure 3 It is an exploded stereogram of the detection mechanism in the stress assessment method and device for demolition construction of a multi-story bridge of the present invention;

[0032] Figure 4 The present invention is a method and device for evaluating stress in multi-layer bridge demolition construction Figure 3 A magnified stereoscopic image of the structure at center A;

[0033] Figure 5 The present invention is a method and device for evaluating stress in multi-layer bridge demolition construction Figure 3 The enlarged stereogram of the structure at B in the middle;

[0034] Figure 6 It is an exploded stereogram of the counterweight mechanism in the stress assessment method and device for demolition construction of a multi-story bridge of the present invention;

[0035] Figure 7 The present invention is a method and device for evaluating stress in multi-layer bridge demolition construction Figure 6 Enlarged stereoscopic image of the structure at point C in the middle.

[0036] In the figure: 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. Bottom 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. Column; 202. Groove A; 203. Motor A; 204. Threaded rod; 205. Sliding block; 206. Thread groove; 207. Fixed block A; 208. Rotating groove A; 209. 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. Fixed block B; 218. Rotating groove B; 219. Electric telescopic rod; 220. Mounting rod; 221. Card pad; 222. Mounting block; 223. Mounting groove; 224. Sensor; 225. Reflective piece; 3. Hole-opening mechanism; 301. Bracket; 302. Slide groove; 303. Top plate; 304. Fixed groove; 305. Hydraulic cylinder; 306. Slide plate; 307. Slide block; 308. Groove B; 309. Rotating groove A; 310. 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. Convex block; 6. Slide groove A; 7. Slide groove B; 8. Pressing block; 9. Pressing plate; 10. Linking plate; 11. Clamping block; 12. Spring; 13. Clamping groove A; 14. Clamping groove B. Detailed implementation manner

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to the attached Figure 1 -attached Figure 7 As shown, the present invention provides a technical solution: a multi-layer bridge demolition construction stress evaluation device, including a moving mechanism, a detection mechanism is arranged at the top of the moving mechanism, a hole-opening mechanism is arranged at the top of the moving mechanism, and a counterweight mechanism is arranged at the top of the moving mechanism.

[0039] Example 1, according to Figures 1-5The shown moving mechanism 1 includes a base 101. A gear A 103 is provided on the side of the base 101, and a gear B 105 is provided at the top of the base 101. A crawler A 106 is provided at the top of the gear B 105. A connecting plate 108 is installed on the left side of the base 101, and a bottom plate 109 is installed on the left side of the connecting plate 108. A gear C 111 is provided on the side of the bottom plate 109, and a gear D 113 is provided at the top of the bottom plate 109. A crawler 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. A fixed block A 207 of the sliding block 205. A rotating rod A 209 is provided inside the fixed block A 207. A connecting rod 210 is provided at the bottom end of the rotating rod A 209. A rotating rod B 211 is provided at the bottom end of the connecting rod 210. A limiting rod 214 is provided inside the column 201. An adjusting plate 215 is provided in the middle of the limiting rod 214. An infrared detection head 216 is provided on the surface of the adjusting plate 215. A fixed block B 217 is provided on the back of the adjusting plate 215. An electric telescopic rod 219 is provided on the right side of the adjusting plate 215. An installation rod 220 is installed at the output end of the electric telescopic rod 219. A cushion 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 response piece 225 is provided on the right side of the sensor 224. The gear A 103 is provided at the four corners of the base 101 through a side plate A 102. The gear B 105 is fixed at the top of the base 101 through a support plate. The gear C 111 is provided at the four corners of the bottom plate 109 through a side plate B 110. The gear D 113 is fixed at the top of the base 101 through a support plate. Tooth blocks A 107 are provided at the top of the crawler A 106. Tooth blocks B 115 are provided at the top of the crawler B 114. The motor A 203 is provided inside the groove A 202 through the groove A 202. A threaded groove 206 is provided inside the sliding block 205. The sliding block 205 is slidably connected to the column 201. The sliding block 205 is rotatably connected to the threaded rod 204 through the threaded groove 206. The rotating rod A 209 rotates inside the fixed block A 207 through a rotating groove A 208. 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 a rotating groove B 218. The connecting rod 210 is rotatably connected to the fixed block B 217. The limiting rod 214 rotates inside the column 201 through a limiting groove 213. The adjusting plate 215 is rotatably connected to the column 201 through a receiving groove 212. The installation block 222 is slidably connected to the installation rod 220 through an installation groove 223. The cushion pads 221 are symmetrically distributed at the front and rear ends of the installation rod 220. The installation block 222 is slidably connected to the cushion pads 221 through the installation groove 223.

[0040] The effects achieved by the entire Example 1 are as follows: high automation and precise control are realized, and the coordinated operation of gear A103, gear B105, gear C111, gear D113 and track A106, track B114 ensures the stable movement and precise positioning of the equipment. Motor A203 drives the threaded rod 204, which, in cooperation with the sliding block 205 and the fixed block, realizes the flexible lifting and precise adjustment of the detection mechanism 2. Designs such as the infrared detection head 216 and the electric telescopic rod 219 improve the detection efficiency and accuracy, enhance the efficiency and safety of bridge detection and construction, and bring innovative improvements to the field of bridge maintenance.

[0041] Example 2. According to Figure 1 、 Figure 2 A bracket 301 is provided at the top end of the bottom plate 109 shown. A top plate 303 is provided at the top end of the bracket 301. A hydraulic cylinder 305 is provided at the top end of the top plate 303. The output end of the hydraulic cylinder 305 is equipped with a sliding plate 306. A slider 307 is installed on the side of the sliding plate 306. A motor B310 is provided at the top end of the sliding plate 306. The output end of the motor B310 is equipped with a rotating rod A311. A drill bit 312 is provided at the bottom end of the rotating rod A311. The brackets 301 are symmetrically distributed at the front and rear ends of the top end of the bottom plate 109. The slider 307 is slidably connected to the bracket 301 through a chute 302. The sliding plate 306 slides in the middle of the bracket 301. The hydraulic cylinder 305 is installed at the top end of the top plate 303 through a fixed slot 304. The motor B310 is fixed to the top end of the sliding plate 306 through a groove B308. The rotating rod A311 rotates at the top end of the sliding plate 306 through a rotating slot A309.

[0042] The effects achieved by the entire Example 2 are as follows: the efficient and precise positioning and flexible adjustment of the drill bit 312 are realized. 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. In cooperation with the design of the slider 307 and the chute 302, the precise adjustment of the height of the drill bit 312 is realized to meet the requirements of different working conditions. The motor B310 drives the rotating rod A311 to drive the drill bit 312 to rotate, providing powerful power for the hole-opening operation, improving the hole-opening 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 7A limiting block 401 is provided at the top of the shown bottom plate 109. A counterweight block 402 is provided at the top of the bottom plate 109. A rotating rod B 405 is provided at the top of the counterweight block 402. A handle 406 is provided on the surface of the rotating rod B 405. A convex block 5 is provided at the bottom of the counterweight block 402. A pressing block 8 is provided inside the counterweight block 402. A pressing plate 9 is fixedly installed on the surface of the pressing block 8. A linkage plate 10 is provided on the back of the pressing block 8. A clamping block 11 is provided on the surface of the linkage plate 10. A spring 12 is installed on the back of the linkage plate 10. The counterweight block 402 is slidably connected to the limiting block 401. The rotating rod B 405 rotates inside the counterweight block 402 through a rotating groove B 404. The handle 406 is received inside the counterweight block 402 through a groove C 403. The pressing block 8 slides inside the counterweight block 402 through a sliding groove A 6. The clamping block 11 slides inside the convex block 5 through a sliding groove B 7. The spring 12 is slidably connected to the convex block 5. The convex block 5 slides inside the counterweight block 402 through a clamping groove A 13. The clamping block 11 slides inside the counterweight block 402 through a clamping groove B 14.

[0044] The effect achieved by the entire Embodiment 3 is as follows: It realizes the stable and convenient operation of the equipment during operation. The counterweight block 402 enhances the stability of the equipment and reduces vibration. The design of the rotating rod B 405 and the handle 406 facilitates the transfer and position adjustment of the equipment. Components such as the linkage plate 10, the clamping block 11, the spring 12, and the convex block 5 work together to achieve the rapid installation and firm locking of the counterweight block 402. At the same time, it facilitates the storage and transportation of the equipment, improves the safety and convenience of using the equipment, and also enhances its adaptability and stability under different working conditions, providing a more efficient and safe solution for related operations such as bridge demolition.

[0045] The working principle of the entire equipment is as follows: In the moving stage, when in use, first place the moving mechanism 1 in the required position, and then start the gear A 103 on the surface of the side plate A 102. At this time, the gear A 103 and the gear B 105 on the surface of the support plate A 104 drive the crawler A 106 and the tooth block A 107 to rotate on the surface of the base 101. And at this time, the base 101 drives the bottom plate 109 to move together through the connecting plate 108, and makes the gear C 111 on the surface of the side plate B 110 and the gear D 113 on the surface of the support plate B 112 drive the crawler B 114 and the tooth block B 115 to rotate together to achieve the moving effect. When it moves to the required position.

[0046] In the detection stage, the detection mechanism 2 is started. At this time, the motor A203 inside the groove A202 will drive the threaded rod 204 to rotate, causing the threaded rod 204 to rotate inside the sliding block 205 through the thread groove 206, and making the sliding block 205 slide downward inside the column 201. At this time, the sliding block 205 drives the connecting rod 210 to slide downward together through the rotating rod A209, causing the rotating rod A209 to rotate inside the fixed block A207 through the rotating groove A208, and making the connecting rod 210 drive the adjusting plate 215 to rotate together through the rotating rod B211. At this time, the rotating rod B211 rotates inside the fixed block B217 through the rotating groove B218, and the limiting rod 214 rotates inside the column 201 through the limiting groove 213, and the adjusting plate 215 rotates outward inside the column 201 through the receiving groove 212. When the adjusting plate 215 is completely turned open, the infrared detection head 216 can be perpendicular to the ground. Then, the electric telescopic rod 219 is started, so that the electric telescopic rod 219 drives the response piece 225 to slide downward together. When the response piece 225 is attached to the ground, the detection can begin, and the detected stress is transmitted through the sensor 224. And after long-term use, when the response piece 225 needs to be replaced, 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 cushion 221 through the mounting groove 223. When the mounting block 222 completely slides out of the surface of the mounting rod 220, the response piece 225 can be replaced.

[0047] In the drilling stage, after the detection is completed, the drill bit 312 can be aligned with the detected cutting point, and the drilling mechanism 3 is 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 fixed inside the top plate 303 through the fixed groove 304 is started, so that 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 touches the ground, the drilling can begin.

[0048] Counterweight stacking stage. Before use, the counterweight mechanism 4 needs to be stacked. At this time, first pinch the handle 406 and pull it upward, so that the handle 406 rotates upward through the rotating rod B405. At this time, the rotating rod B405 rotates upward inside the counterweight 402 through the rotating groove B404. When the handle 406 is completely vertical at the top of the counterweight 402 through the groove C403, the staff can carry the counterweight 402 through the handle 406 and place it on the top of the top plate 303, so that the limit block 401 fixes the first counterweight 402 on the top of the bottom plate 109. When stacking is required, first align the convex block 5 at the bottom of the second counterweight 402 with the slot A13 of the first counterweight 402 and press downward, so that the convex block 5 slides into the first counterweight 402 through the slot A13. At this time, because the inclined surface of the latch 11 is under pressure, it will slide into the convex block 5 through the sliding slot A6. When the convex block 5 completely slides into the first counterweight 402 through the slot A13, and under the elastic force of the spring 12 itself, it will drive the latch 11 to slide into the slot B14 through the linkage plate 10. When the latch 11 completely slides into the counterweight 402 through the slot B14, self-locking can be completed. And after use, when disassembly is required, pinch the pressing plate 9 and press it against 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 through the sliding slot B7 and drives the latch 11 to slide into the convex block 5 together through the linkage plate 10, so as to disassemble the counterweight 402.

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

Claims

1. Multilayer bridge demolition construction stress evaluation device, characterized in that: It includes a moving mechanism (1), at the top of the moving mechanism (1) there is a detection mechanism (2), at the top of the moving mechanism (1) there is a hole-opening mechanism (3), and at the top of the moving mechanism (1) there is a counterweight mechanism (4); The moving mechanism (1) includes a base (101), on the side of the base (101) there is a gear A (103), at the top of the base (101) there is a gear B (105), at the top of the gear B (105) there is a track A (106), on the left side of the base (101) there is a connecting plate (108) installed, on the left side of the connecting plate (108) there is a bottom plate (109) installed, on the side of the bottom plate (109) there is a gear C (111), at the top of the bottom plate (109) there is a gear D (113), at the top of the gear B (105) there is a track B (114), at the top of the base (101) there is a column (201), inside the column (201) there is a motor A (203), the output end of the motor A (203) is installed with a threaded rod (204), on the surface of the threaded rod (204) there is a sliding block (205), the fixed block A (207) of the sliding block (205), inside the fixed block A (207) there is a rotating rod A (209), at the bottom end of the rotating rod A (209) there is a connecting rod (210), at the bottom end of the connecting rod (210) there is a rotating rod B (211), inside the column (201) there is a limiting rod (214), in the middle of the limiting rod (214) there is an adjusting plate (215), on the surface of the adjusting plate (215) there is an infrared detection head (216), on the back of the adjusting plate (215) there is a fixed block B (217), on the right side of the adjusting plate (215) there is an electric telescopic rod (219), the output end of the electric telescopic rod (219) is installed with a mounting rod (220), on the surface of the mounting rod (220) there is a cushion (221), on the surface of the mounting rod (220) there is a mounting block (222), on the right side of the mounting block (222) there is a sensor (224), and on the right side of the sensor (224) there is a response piece (225).

2. The multi-layer bridge demolition construction stress evaluation device according to claim 1, characterized in that: The gear A (103) is arranged at the four corners of the base (101) through a side plate A (102), the gear B (105) is fixed at the top of the base (101) through a support plate A (104), the gear C (111) is arranged at the four corners of the bottom plate (109) through a side plate B (110), the gear D (113) is fixed at the top of the base (101) through a support plate B (112), at the top of the track A (106) there are tooth blocks A (107), and at the top of the track B (114) there are tooth blocks B (115).

3. The stress evaluation device for multi-layer bridge demolition construction according to claim 2, characterized in that: The motor A (203) is arranged inside the groove A (202) through the groove A (202). A threaded groove (206) is arranged inside the sliding block (205). The sliding block (205) is slidably connected to the column (201). The sliding block (205) is rotatably connected to the threaded rod (204) through the threaded groove (206).

4. The multi-layer bridge demolition construction stress evaluation device according to claim 3, characterized in that: The rotating rod A (209) rotates inside the fixed block A (207) through the rotating groove A (208). 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). The connecting rod (210) is rotatably connected to the fixed block B (217).

5. The stress evaluation device for multi-layer bridge demolition construction according to claim 4, wherein: 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 receiving groove (212). The mounting block (222) is slidably connected to the mounting rod (220) through the mounting groove (223). The cushion 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 cushion pads (221) through the mounting groove (223).

6. The multi-layer bridge demolition construction stress evaluation device according to claim 5, characterized in that: A bracket (301) is arranged at the top end of the bottom plate (109). A top plate (303) is arranged at the top end of the bracket (301). A hydraulic cylinder (305) is arranged at the top end of the top plate (303). A sliding plate (306) is installed at the output end of the hydraulic cylinder (305). A slider (307) is installed on the side of the sliding plate (306). A motor B (310) is arranged at the top end of the sliding plate (306). A rotating rod A is installed at the output end of the motor B (310). A drill bit (312) is arranged at the bottom end of the rotating rod A.

7. The stress evaluation device for multi-layer bridge demolition construction according to claim 6, characterized in that: The brackets (301) are symmetrically distributed at the front and rear ends of the top end of the bottom 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 end of the top plate (303) through the fixing groove (304). The motor B (310) is fixed to the top end of the sliding plate (306) through the groove B (308). The rotating rod A rotates at the top end of the sliding plate (306) through the rotating groove A (309).

8. The stress evaluation device for multi-layer bridge demolition construction according to claim 7, characterized in that: A limiting block (401) is provided at the top of the bottom plate (109), a counterweight block (402) is provided at the top of the bottom plate (109), a rotating rod B (405)(311) is provided at the top of the counterweight block (402), a handle (406) is provided on the surface of the rotating rod B (405)(311), a convex block (5) is provided at the bottom of the counterweight block (402), a pressing block (8) is provided inside the counterweight block (402), a pressing plate (9) is fixedly installed on the surface of the pressing block (8), a linkage plate (10) is provided on the back of the pressing block (8), a clamping block (11) is provided on the surface of the linkage plate (10), and a spring (12) is installed on the back of the linkage plate (10).

9. The stress evaluation device for multi-layer bridge demolition construction according to claim 8, characterized in that: The counterweight block (402) is slidably connected to the limiting block (401), the rotating rod B (405)(311) rotates inside the counterweight block (402) through a rotating groove B (404), the handle (406) is received inside the counterweight block (402) through a groove C (403), the pressing block (8) slides inside the counterweight block (402) through a sliding groove A (6), the clamping block (11) slides inside the convex block (5) through a sliding groove B (7), the spring (12) is slidably connected to the convex block (5), the convex block (5) slides inside the counterweight block (402) through a clamping groove A (13), and the clamping block (11) slides inside the counterweight block (402) through a clamping groove B (14).

10. Method for using a stress evaluation device for multi-layer bridge demolition construction, characterized in that: The multi-layer bridge demolition construction stress evaluation device described in claim 9 is used, including the following steps: S1: The position transfer is realized through the coordinated work of a gear A (103), a gear B (105), a gear C (111), and a gear D (113). The motor drives the gear A (103) and the gear B (105) to rotate, and rotates on the base (101) through a crawler A (106) and a tooth block A (107). At the same time, the gear C (111) and the gear D (113) drive the crawler B (114) and the tooth block B (115) to rotate synchronously, so that the device moves smoothly on the base (101) to a designated position; S2: After the device moves into place, start the detection mechanism (2). The motor A (203) drives the threaded rod (204) to rotate, and the sliding block (205) slides down inside the column (201) through a threaded groove (206). Then, through a rotating rod A (209) and a rotating rod B (211), the adjusting plate (215) is driven to rotate and be perpendicular to the ground. Subsequently, the electric telescopic rod (219) pushes the response piece (225) to fit the ground, and the sensor (224) detects the stress of the response piece (225) and transmits the data to complete the precise detection of the bridge condition; S3: After the detection is completed, start the hole-opening mechanism (3) to perform drilling operations. The motor B (310) drives the rotating rod A (311) to rotate, and the drill bit (312) rotates accordingly to open a hole. At the same time, the hydraulic cylinder (305) pushes the sliding plate (306) to slide 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, achieving efficient drilling. S4: Before use, the counterweight mechanism (4) needs to be stacked to enhance stability. Through the cooperation of the lifting handle (406) and the rotating rod B (405), the counterweight blocks (402) are stacked and self-locked in sequence. The design of the pressing plate (9) and the clamping block (11) ensures the firm connection between the counterweight blocks (402), facilitating the handling and installation of the equipment. At the same time, the counterweight blocks (402) can be quickly released during disassembly, improving the overall operation efficiency.

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