A device for detecting the length of steel cages in bridge foundation piles

Abstract

This invention belongs to the field of bridge reinforcement cage inspection technology, and specifically relates to a bridge foundation pile reinforcement cage length inspection device. It includes a storage box, with a winding reel rotatably connected to the inner wall of the storage box. A measuring belt is wound around the outer wall of the winding reel. The left side wall of the storage box has a storage opening that matches the measuring belt. A microcontroller is fixedly connected to the inner wall of the storage box, and a display screen is connected to the right side wall of the storage box. When using the measuring belt to inspect the length of the reinforcement cage, this invention allows the measuring belt to be placed at a certain distance from the reinforcement cage before measuring its length. This avoids the problem that protrusions and reinforcing hoops on the surface of the reinforcement cage would prevent the measuring belt from adhering to the cage, thus affecting measurement accuracy.

Description

Technical Field

[0001] This invention belongs to the field of bridge reinforcement cage detection technology, and in particular relates to a bridge foundation pile reinforcement cage length detection device. Background Technology

[0002] During bridge and culvert construction, drilling operations are required according to specifications, and then the prefabricated steel cage is lowered into the pile hole. During the processing of the steel cage, a length measuring device is needed to measure its length to detect whether the tied prefabricated steel cage meets the specifications. For example, a bridge foundation pile steel cage length detection device is proposed in patent publication number CN213902286U.

[0003] When existing testing devices measure the length of reinforcing cages using a measuring belt, it is necessary to ensure that the belt is in close contact with the axis of the reinforcing cage. However, the protrusions on the surface of the reinforcing cage and the large-diameter reinforcing hoops can hinder the belt from fitting properly, leading to deviations in the measurement data. At the same time, the measuring belt will deform after being used under tension for a long time. If the deformed belt is used for testing, it will also affect the accuracy of the measurement data.

[0004] To address this issue, a bridge foundation pile reinforcement cage length detection device is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a device for detecting the length of the steel reinforcement cage in bridge foundation piles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bridge foundation pile reinforcement cage length detection device, comprising a storage box, a winding reel rotatably connected to the inner wall of the storage box, a measuring belt wound around the outer wall of the winding reel, a storage opening matching the measuring belt on the left side wall of the storage box, a micro controller fixedly connected to the inner wall of the storage box, and a display screen connected to the right side wall of the storage box, and further comprising:

[0007] A guide cover is fixedly connected to the left side wall of the storage box and covers the outside of the storage opening. A guide tube is fixedly connected to the left side wall of the guide cover. The left end of the measuring belt passes through the guide tube and is connected to a positioning component. A protective cover covering the outside of the positioning component is bolted to the left side wall of the storage box.

[0008] Multiple support components are slidably sleeved on the outside of the guide tube for supporting and fixing the measuring belt.

[0009] Preferably, the positioning component includes a positioning plate, with a first laser rangefinder fixedly connected to the upper end of the positioning plate, a slot provided at the lower end of the positioning plate, and a scale post inserted into the slot. The side wall of the positioning plate is fixed to the scale post by positioning bolts, and the lower end of the scale post is connected to a sleeve by a bolt connection mechanism. Two horizontal plates are fixedly connected to the right side wall of the positioning plate, and the left end of the measuring belt is located inside the two horizontal plates and fixedly connected to a positioning block. Positioning cylinders are rotatably connected to both the upper and lower sides of the positioning block. Fixing bolts are threadedly connected to the side walls of the two horizontal plates, and one end of the fixing bolt passing through the horizontal plate is located inside the positioning cylinder.

[0010] Preferably, the support assembly includes a support frame slidably sleeved on the outside of the guide tube, with adjacent support frames fixed by magnets. A vertical rod is fixedly connected to the upper side wall of the support frame, and a second laser rangefinder is fixedly connected to the upper end of the vertical rod. A laser reflector is fixedly connected to the left side wall of the second laser rangefinder. An installation cylinder is fixedly connected to the lower side wall of the support frame, and a scale pin is inserted into the installation cylinder. The installation cylinder is fixed to the scale pin by a limiting bolt. The lower end of the scale pin is connected to a retaining frame by a bolt connection mechanism. A threaded pin is threadedly connected to the front side wall of the retaining frame, and the rear end of the threaded pin is located inside the retaining frame and rotatably connected to a front arc-shaped plate. A rear arc-shaped plate is fixedly connected to the rear inner wall of the retaining frame by a bracket.

[0011] Preferably, two inserts are fixedly connected to both the upper and lower sides of the support frame, and a pressure pin is movably inserted into each of the two inserts. The upper and lower inner walls of the support frame are provided with slots. The lower ends of the two pressure pins on the same side are located in the slots and are fixedly connected to the same pressure frame. The ends of the two pressure pins on the same side away from the pressure frame are fixedly connected to the same lifting ring. The lifting ring and the support frame are fixedly connected to the same spring. A locking bolt is threaded into the insert on the left side.

[0012] Preferably, a tension column is fixedly connected to the right side wall of the storage box, a tension cylinder is fitted over the tension column, a circular plate is fixedly connected to one end of the tension column inside the tension cylinder, the same spring is fixedly connected between the circular plate and the tension cylinder, a guide pin is fixedly connected to the upper side wall of the circular plate, a sliding opening matching the guide pin is opened on the upper side wall of the tension cylinder, and a guide line is provided on the outer wall of the tension cylinder.

[0013] Preferably, the upper sidewalls of both the first and second laser rangefinders are fixedly connected to angle disks, the sidewalls of the angle disks are rotatably connected to connecting pins, the sidewalls of the connecting pins are fixedly connected to plumb lines, and the lower end of the plumb lines is fixedly connected to a plumb bob.

[0014] Preferably, a guide sleeve is fixedly connected to the outer wall of the front arc plate, and a guide pin that matches the guide sleeve is fixedly connected to the inner wall of the card frame.

[0015] Preferably, a laser ranging probe is fixedly connected to the side wall of the guide sleeve via a bracket, and a ranging plate is fixedly connected to the rod wall of the guide pin.

[0016] Compared with existing technologies, the advantages of a bridge foundation pile reinforcement cage length detection device are:

[0017] 1. By using the positioning and support components, when using the measuring belt to detect the length of the rebar cage, the measuring belt can be placed at a certain distance from the rebar cage before the length of the rebar cage is detected. This avoids the problem that the protrusions on the surface of the rebar cage and the reinforcing hoops will prevent the measuring belt from adhering to the rebar cage and affecting the measurement accuracy.

[0018] 2. By setting up multiple support components, the length of the rebar cage can also be detected by a laser rangefinder. The data can be compared with the data from the measuring belt, ensuring the accuracy of the rebar cage length. Furthermore, it can still play a role in accurate measurement even when the data from the measuring belt changes.

[0019] 3. By using the set frame, threaded pin, front arc plate, guide sleeve, guide pin, laser rangefinder probe, and rangefinder plate, the diameter of the longitudinal reinforcement bars of the steel cage can be detected during the detection of the length of the steel cage, thereby improving the practicality of the detection device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a bridge foundation pile reinforcement cage length detection device provided by the present invention;

[0021] Figure 2 This invention provides a bridge foundation pile reinforcement cage length detection device. Figure 1 A partial cross-sectional view;

[0022] Figure 3 This is a schematic diagram of the positioning component in a bridge foundation pile reinforcement cage length detection device provided by the present invention;

[0023] Figure 4 This is a schematic diagram of the support component in a bridge foundation pile reinforcement cage length detection device provided by the present invention;

[0024] Figure 5 This invention provides a bridge foundation pile reinforcement cage length detection device. Figure 4 An enlarged schematic diagram of part A in the middle;

[0025] Figure 6This is a schematic diagram of the shape and structure of the front arc plate and the rear arc plate in a bridge foundation pile reinforcement cage length detection device provided by the present invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the angle plate in a bridge foundation pile reinforcement cage length detection device provided by the present invention;

[0027] Figure 8 This is a schematic diagram of the shape and structure of the pressure frame in a bridge foundation pile reinforcement cage length detection device provided by the present invention;

[0028] Figure 9 This is a schematic diagram illustrating the usage of a bridge foundation pile reinforcement cage length detection device provided by the present invention.

[0029] In the diagram: 1. Storage box, 2. Rewind reel, 3. Measuring belt, 4. Microcontroller, 5. Display screen, 6. Guide cover, 7. Guide tube, 8. Positioning assembly, 81. Positioning plate, 82. First laser rangefinder, 9. Scale column, 10. Insert sleeve, 11. Horizontal plate, 12. Positioning block, 13. Positioning cylinder, 14. Fixing bolt, 15. Support assembly, 151. Support frame, 152. Vertical rod, 16. Second laser rangefinder, 17. Laser reflector, 18. Mounting cylinder, 19. Scale pin, 20. Clip frame, 21. Threaded pin, 22. Front arc plate, 23. Rear arc plate, 24. Insert cylinder, 25. Pressure pin, 26. Pressure frame, 27. Lifting ring, 28. Pull column, 29. Pull cylinder, 30. Circular plate, 31. Guide pin, 32. Guide line, 33. Angle plate, 34. Connecting pin, 35. Plumb line, 36. Plumb bob, 37. Guide sleeve, 38. Guide pin, 39. Laser rangefinder probe, 40. Rangefinder plate, 41. Protective cover, 42. Magnet. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] like Figures 1-9 As shown, a bridge foundation pile reinforcement cage length detection device includes a storage box 1, a winding reel 2 rotatably connected to the inner wall of the storage box 1, a measuring belt 3 wound around the outer wall of the winding reel 2, a storage opening matching the measuring belt 3 on the left side wall of the storage box 1, a microcontroller 4 fixedly connected to the inner wall of the storage box 1, and a display screen 5 connected to the right side wall of the storage box 1. It also includes:

[0032] A guide cover 6 is fixedly connected to the left side wall of the storage box 1 and covers the outside of the storage opening. A guide tube 7 is fixedly connected to the left side wall of the guide cover 6. The left end of the measuring belt 3 passes through the guide tube 7 and is connected to a positioning component 8. A protective cover 41 covering the outside of the positioning component 8 is bolted to the left side wall of the storage box 1. The positioning component 8 includes a positioning plate 81. A first laser rangefinder 82 is fixedly connected to the upper end of the positioning plate 81. A slot is opened at the lower end of the positioning plate 81, and a scale post 9 is inserted into the slot. The side wall of the positioning plate 81 is aligned with the scale post 9 by positioning bolts. The graduation column 9 is fixed, and the lower end of the graduation column 9 is connected to the sleeve 10 through a bolt connection mechanism. Two horizontal plates 11 are fixedly connected to the right side wall of the positioning plate 81. The left end of the measuring belt 3 is located inside the two horizontal plates 11 and is fixedly connected to the positioning block 12. The upper and lower sides of the positioning block 12 are rotatably connected to the positioning cylinder 13. The side walls of the two horizontal plates 11 are threaded with fixing bolts 14. One end of the fixing bolt 14 passes through the horizontal plate 11 and is located inside the positioning cylinder 13. Through this assembly, the end of the measuring belt 3 can be fixed and placed at a certain height.

[0033] Multiple support components 15 are slidably sleeved on the outside of the guide tube 7 for supporting and fixing the measuring belt 3. Each support component 15 includes a support frame 151 slidably sleeved on the outside of the guide tube 7. Adjacent support frames 151 are fixed together by magnets 42. A vertical rod 152 is fixedly connected to the upper side wall of the support frame 151. A second laser rangefinder 16 is fixedly connected to the upper end of the vertical rod 152. A laser reflector 17 is fixedly connected to the left side wall of the second laser rangefinder 16. The lower side wall of the support frame 151 is fixedly... A mounting cylinder 18 is fixedly connected, and a scale pin 19 is inserted into the mounting cylinder 18. The mounting cylinder 18 is fixed to the scale pin 19 by a limiting bolt. The lower end of the scale pin 19 is connected to a retaining frame 20 by a bolt connection mechanism. A threaded pin 21 is threadedly connected to the front side wall of the retaining frame 20. The rear end of the threaded pin 21 is located inside the retaining frame 20 and is rotatably connected to a front arc plate 22. A rear arc plate 23 is fixedly connected to the rear inner wall of the retaining frame 20 by a bracket. This assembly can support the middle section of the measuring belt 3.

[0034] Two inserts 24 are fixedly connected to both the upper and lower sides of the support frame 151. Each insert 24 has a movably inserted pressure pin 25. The upper and lower inner walls of the support frame 151 are provided with slots. The lower ends of two pressure pins 25 on the same side are located within these slots and are fixedly connected to the same pressure frame 26 (see reference). Figure 8 As shown), the two pressure pins 25 on the same side are fixedly connected to the same lifting ring 27 at the ends away from the pressure frame 26. The lifting ring 27 and the support frame 151 are fixedly connected to the same spring. The left insert 24 is threaded with a locking bolt, which can connect the measuring belt 3 and the support assembly 15.

[0035] A tension column 28 is fixedly connected to the right side wall of the storage box 1. A tension cylinder 29 is fitted over the tension column 28. A circular plate 30 is fixedly connected to one end of the tension column 28 inside the tension cylinder 29. The same spring is fixedly connected between the circular plate 30 and the tension cylinder 29. A guide pin 31 is fixedly connected to the upper side wall of the circular plate 30. A sliding opening matching the guide pin 31 is opened on the upper side wall of the tension cylinder 29. A guide line 32 is provided on the outer wall of the tension cylinder 29 to facilitate the operator to judge the magnitude of the tension applied by the measuring belt 3.

[0036] Angle discs 33 are fixedly connected to the upper side walls of both the first laser rangefinder 82 and the second laser rangefinder 16. A connecting pin 34 is rotatably connected to the side wall of the angle disc 33. A plumb line 35 is fixedly connected to the side wall of the connecting pin 34. A plumb bob 36 is fixedly connected to the lower end of the plumb line 35, which can determine the angle between the positioning component 8 and the support component 15.

[0037] The outer wall of the front arc plate 22 is fixedly connected to a guide sleeve 37, the inner wall of the frame 20 is fixedly connected to a guide pin 38 that matches the guide sleeve 37, the side wall of the guide sleeve 37 is fixedly connected to a laser rangefinder 39 via a bracket, and the rod wall of the guide pin 38 is fixedly connected to a rangefinder plate 40, which can detect the diameter of the longitudinal reinforcement of the steel cage.

[0038] The operating principle of the present invention is explained as follows: When the length of a steel cage with small surface protrusions and small reinforcing hoop size is to be tested, the operator can directly open the protective cover 41, then pull out the left end of the measuring belt 3, and directly use the measuring belt 3 to fit against the longitudinal reinforcement of the steel cage to test the length of the steel cage.

[0039] When inspecting the length of a rebar cage with large surface protrusions or large surface reinforcing hoops, after opening the protective cover 41, the operator needs to place the positioning block 12 between the two horizontal plates 11, and then rotate the fixing bolts 14 on the surface of the two horizontal plates 11. Through the threaded engagement between the fixing bolts 14 and the horizontal plates 11, the fixing bolts 14 will rotate and insert into the positioning cylinder 13. The positioning block 12 can then be fixed between the two horizontal plates 11 using the two fixing bolts 14, thereby relatively fixing the measuring belt 3 and the positioning plate 81. Then, the insert sleeve 10 and the scale post 9 are connected by a bolt connection mechanism (the bolt connection mechanism includes a connecting ring and a connecting bolt; the connecting ring is connected to the insert sleeve 10; after the scale post 9 is inserted into the insert sleeve 10, the scale post 9 is fixed by the connecting bolt). Then, the insert sleeve 10 is put on. The measuring belt 3 is gradually pulled out above the surface of the measuring belt 3. The measuring belt 3 is then pulled out above the surface of the measuring reel 2. After the operator pulls the positioning plate 81 to move it, the scale column 9 is pulled out from the lower end of the positioning plate 81 by a certain length (by pulling out the scale column 9 by a certain length, the positioning plate 81 drives the measuring belt 3 to be higher than the protrusion or reinforcing hoop on the surface of the measuring reel 2). Then the operator can pull the tension cylinder 29 by hand. The tension cylinder 29 pulls the circular plate 30 and the tension column 28 through the spring on the inner wall. The tension column 28 will drive the storage box 1 to move, so that the measuring belt 3 wrapped on the surface of the winding reel 2 is gradually pulled out. After the operator pulls the storage box 1 to the measurement end point, another operator moves the multiple support components 15 sleeved on the surface of the guide tube 7 to be evenly distributed along the measuring belt 3.

[0040] The operator distributes multiple support components 15 evenly along the measuring belt 3 (there are multiple support components 15, and the number of support components 15 can be set according to the length of different steel cages; only three are shown in the figure). Then, the clamping frame 20 is fitted onto the outside of the longitudinal reinforcement of the steel cage, and the threaded pin 21 is rotated. The threaded engagement between the threaded pin 21 and the threaded hole on the surface of the clamping frame 20 drives the front arc plate 22 to move. The clamping frame 20 can be fixed on the outside of the longitudinal reinforcement by the mutual cooperation of the front arc plate 22 and the rear arc plate 23. Furthermore, the diameter of the longitudinal reinforcement can be detected by the cooperation of the laser ranging probe 39 and the ranging plate 40.

[0041] Before installing the card frame 20 on the outside of the longitudinal rib, the operator needs to manually adjust the support frame 151 at a certain angle. During the rotation of the support frame 151, the vertical rod 152 and the second laser rangefinder 16 will drive the upper angle plate 33 to rotate at a certain angle. Since the angle displayed in the upper angle plate 33 of the positioning plate 81 is fixed after the positioning plate 81 is installed, the angle plate 33 located above the support frame 151 will also rotate when the operator rotates the support frame 151. The plumb bob 36 and the plumb rod 35 always point downwards under the action of gravity. The operator can adjust the support frame 151 to the same tilt angle as the positioning plate 81 by using the scale on the surface of the angle plate 33. Then the operator needs to press the lifting rings 27 on both sides to make the lifting rings 27 contact the port of the insertion cylinder 24. The lifting rings 27 will drive the pressure frame 26 to move through the pressure pin 25 (until the operator can no longer press the lifting ring). (Until the lowering ring 27 moves), the support frame 151 can be fixed to the outside of the measuring belt 3 using the pressure frames 26 on both the upper and lower sides. Then, the operator pulls the mounting cylinder 18 according to the distance displayed on the surface of the scale column 9, so that the scale pin 19 is pulled out of the mounting cylinder 18 by the same distance as the scale column 9. Similarly, after fixing all the support components 15 to the measuring belt 3, the rightmost support component 15 is installed at the rightmost end of the measuring longitudinal reinforcement. At this time, the first laser rangefinder 82, the second laser rangefinder 16, and the laser reflector 17 are on the same straight line. The length of the rebar cage can be measured in segments using the first laser rangefinder 82, the second laser rangefinder 16, and the laser reflector 17. The microcontroller 4 can obtain the length of the rebar cage by integrating the lengths measured by the first laser rangefinder 82 and the second laser rangefinder 16, and adding the thickness of the second laser rangefinder 16 and the laser reflector 17 (refer to...). Figure 9 (as shown in the image), and then the measured data is displayed on screen 5.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 bridge foundation pile reinforcement cage length detection device, comprising a storage box (1), the inner wall of the storage box (1) is rotationally connected with a winding disc (2), the outer wall of the winding disc (2) is wound with a measuring belt (3), the left side wall of the storage box (1) is provided with a storage opening matched with the measuring belt (3), the inner wall of the storage box (1) is fixedly connected with a microcontroller (4), and the right side wall of the storage box (1) is connected with a display screen (5), characterized in that, Also includes: The guide cover (6) is fixedly connected to the left side wall of the storage box (1), and the cover is arranged outside the storage opening. The left side wall of the guide cover (6) is fixedly connected with a guide pipe (7). The left end of the measuring belt (3) passes through the guide pipe (7) and is connected with a positioning assembly (8). The left side wall of the storage box (1) is connected with a protective cover (41) arranged outside the positioning assembly (8) by bolts; A plurality of support assemblies (15) are slidably arranged outside the guide pipe (7) for supporting and fixing the measuring belt (3). The positioning assembly (8) includes a positioning plate (81). The upper end of the positioning plate (81) is fixedly connected with a first laser range finder (82). The lower end of the positioning plate (81) is provided with a slot, and a scale column (9) is inserted in the slot. The side wall of the positioning plate (81) is fixed to the scale column (9) by a positioning bolt. The lower end of the scale column (9) is connected with a plug sleeve (10) through a bolt connection mechanism. The right side wall of the positioning plate (81) is fixedly connected with two cross plates (11). The left end of the measuring belt (3) is located in the two cross plates (11) and is fixedly connected with a positioning block (12). The upper and lower sides of the positioning block (12) are rotatably connected with a positioning cylinder (13). The side walls of the two cross plates (11) are threadedly connected with fixing bolts (14). One end of the fixing bolt (14) passes through the cross plate (11) and is located in the positioning cylinder (13). The support assembly (15) includes a support frame (151) slidably arranged outside the guide pipe (7). Adjacent two support frames (151) are fixed by a magnet (42). The upper side wall of the support frame (151) is fixedly connected with a vertical rod (152). The upper end of the vertical rod (152) is fixedly connected with a second laser range finder (16). The left side wall of the second laser range finder (16) is fixedly connected with a laser reflector (17). The lower side wall of the support frame (151) is fixedly connected with a mounting cylinder (18). The mounting cylinder (18) is inserted with a scale pin (19). The mounting cylinder (18) is fixed to the scale pin (19) by a limiting bolt. The lower end of the scale pin (19) is connected with a clamping frame (20) through a bolt connection mechanism. The front side wall of the clamping frame (20) is threadedly connected with a threaded pin (21). The rear end of the threaded pin (21) is located in the clamping frame (20) and is rotatably connected with a front arc-shaped plate (22). The rear side inner wall of the clamping frame (20) is fixedly connected with a rear arc-shaped plate (23) through a support.

2. The bridge pile reinforcement cage length detection device according to claim 1, characterized in that, Both upper and lower sides of the support frame (151) are fixedly connected with two insertion sleeves (24), two compression pins (25) are movably inserted into the insertion sleeves (24), and the inner walls of the upper and lower sides of the support frame (151) are provided with mouth-shaped grooves, the lower ends of the two compression pins (25) on the same side are located in the mouth-shaped grooves, and the same compression frame (26) is fixedly connected, one end of the two compression pins (25) away from the compression frame (26) is fixedly connected with the same lifting ring (27), the lifting ring (27) and the support frame (151) are fixedly connected with the same spring, and the locking bolt is screw-connected in the insertion sleeve (24) on the left side.

3. The bridge pile reinforcement cage length detection device according to claim 1, characterized in that, The right side wall of the storage box (1) is fixedly connected with a tension column (28), the tension column (28) is provided with a tension cylinder (29), one end of the tension column (28) located in the tension cylinder (29) is fixedly connected with a circular plate (30), the circular plate (30) and the tension cylinder (29) are fixedly connected with the same spring, the upper side wall of the circular plate (30) is fixedly connected with a guide pin (31), the upper side wall of the tension cylinder (29) is provided with a sliding hole matched with the guide pin (31), and the outer wall of the tension cylinder (29) is provided with a guide line (32).

4. The bridge pile reinforcement cage length detection device according to claim 1, characterized in that, The upper side walls of the first laser range finder (82) and the second laser range finder (16) are fixedly connected with a scale (33), the side wall of the scale (33) is rotatably connected with a connecting pin (34), the side wall of the connecting pin (34) is fixedly connected with a plumb rod (35), and the lower end of the plumb rod (35) is fixedly connected with a plumb bob (36).

5. The bridge pile reinforcement cage length detection device according to claim 1, characterized in that, The outer wall of the front arc-shaped plate (22) is fixedly connected with a guide sleeve (37), and the inner wall of the clamping frame (20) is fixedly connected with a guide pin (38) matched with the guide sleeve (37).

6. The bridge pile reinforcement cage length detection device according to claim 5, characterized in that, The side wall of the guide sleeve (37) is fixedly connected with a laser ranging probe (39) through a support, and the rod wall of the guide pin (38) is fixedly connected with a ranging plate (40).

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