Strength detection equipment for constructional engineering steel structure

Abstract

The invention discloses strength detection equipment for a constructional engineering steel structure, and relates to the technical field of steel structure strength detection.The strength detection equipment comprises I-shaped steel, mounting side plates are arranged on the front side and the rear side of the I-shaped steel, L-shaped plates are arranged on the two mounting side plates, and the opposite sides of the two L-shaped plates are arranged on a mounting transverse plate; a first movable frame is fixedly mounted on the front side of the mounting transverse plate; and the walking mechanism comprises a driving wheel and a double-head motor, the double-head motor is fixedly installed at the center position of the installation transverse plate, and the driving wheel is arranged at the position of an output shaft of the double-head motor. The device can automatically walk and has the crawling capability in the vertical direction, so that the device can easily reach a place where workers are difficult to reach, and the device has the capabilities of automatically smearing coupling liquid and automatically detecting, so that the workers only need to record readings under the condition of high-altitude operation.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure strength detection, in particular to a strength detection device for construction engineering steel structures. Background Art

[0002] Steel structure strength testing is the process of systematically evaluating the mechanical properties and structural stability of steel materials, components, and their connections through scientific and technical means to verify that they meet design requirements, construction specifications, and safety standards. Its core purpose is to ensure that the steel structure can withstand the design loads during its service life, avoiding the risk of insufficient strength or failure due to material defects, processing errors, or environmental factors. Common on-site steel structure testing methods include ultrasonic testing, magnetic particle testing, and radiographic testing, with ultrasonic testing being the most commonly used.

[0003] When conducting ultrasonic testing, it is necessary to apply coupling fluid to the test area and then use the probe to conduct the test. If there is severe rust or impurities on the test area, it needs to be polished. However, in actual testing, some areas such as welds that need to be tested are located at high places or in places that are difficult for workers to reach. Workers need to wear safety ropes and walk to that area, carrying testing instruments, test probes and coupling fluid for testing. This is not only very dangerous, but there is a greater possibility of detection errors when testing in such an environment.

[0004] In addition, not all inspection locations are accessible to workers. Some locations that are located at high places or in distant horizontal locations are difficult for inspection workers to conduct inspections and require the use of tools such as ladders. The inspection process is more cumbersome and may be limited by the environment, and the inspection accuracy may not be accurate. Summary of the Invention

[0005] The purpose of the present invention is to provide a strength testing device for steel structures in construction projects, so as to solve the problems raised in the above background technology that the testing process may be dangerous and inconvenient, and the accuracy of the testing may be inaccurate in dangerous environments.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a strength testing device for steel structures in construction projects, comprising an I-beam, wherein mounting side panels are provided on the front and rear sides of the I-beam, and two sets of the mounting side panels are each provided with an L-shaped plate, and the opposite sides of the two sets of the L-shaped plates are both provided on a mounting horizontal plate, and a first movable frame is fixedly installed on the front side of the mounting horizontal plate; A walking mechanism, the walking mechanism comprising a driving wheel and a double-headed motor, the double-headed motor being fixedly mounted at the center of the mounting cross plate, and the driving wheel being arranged at the output shaft of the double-headed motor; An opening and closing mechanism, comprising a linkage block and a hinged rod, wherein a linkage block is movably provided on the upper side of the center position of the mounting horizontal plate, and hinged rods are hinged on both sides of the linkage block, and the other end of the hinged rod is hinged on the L-shaped plate; A driving mechanism, the driving mechanism comprising a mounting frame and a second slider, the mounting frame being movably disposed on one side of the first movable frame, and the second slider being movably disposed within the mounting frame; The coating liquid detection mechanism includes a second movable frame, a fixed block and a coupling liquid loading box. The second movable frame is arranged on the second slider, and the fixed block and the coupling liquid loading box are movably installed on the second movable frame.

[0007] Preferably, the walking mechanism also includes a mounting plate, a transmission connecting rod and a walking belt. Mounting plates are fixedly installed on both sides of the mounting cross plate. Three groups of driving wheels are rotatably installed on the two groups of mounting plates. A group of transmission connecting rods are rotatably installed on the three groups of driving wheels. Walking belts are sleeved on the three groups of driving wheels. The walking belts are in contact with the surface of the I-beam, and the output shaft of the double-headed motor is fixedly connected to the center position of the middle driving wheel.

[0008] Preferably, the walking mechanism also includes a bottom roller, a first movable groove, a first movable rod, a first spring and side rollers. Two groups of bottom rollers are rotatably installed on opposite sides of the two groups of mounting side plates, and the bottom rollers are against the surface of the I-beam. Both groups of mounting side plates are provided with a first movable groove, and a first movable rod is movably inserted in the first movable groove. A first spring is sleeved on the first movable rod, and one side of the first spring is against the inner wall of the first movable groove. Side rollers are rotatably installed on the first movable rod, and the two groups of side rollers are against the two sides of the upper end of the I-beam. The side rollers are rotatably installed on the L-shaped plate, and damping rubber rings are fixedly installed on the side rollers and bottom rollers.

[0009] Preferably, the opening and closing mechanism also includes a first slider, a drag reduction roller, a first slide groove, a fixed column, a fixed plate, an adjusting screw and an adjusting sleeve, the first slider is fixedly installed at the lower ends of the opposite sides of the L-shaped plate, and two groups of drag reduction rollers are rotatably installed on both sides of the first slider, and two groups of first slide grooves are opened on the upper side of the mounting cross plate, and the first slider is slidably installed in the first slide groove, and the drag reduction roller is abutted against the inner wall of the first slide groove, and the center position of the upper side of the mounting cross plate is rotatably installed, and two groups of fixing columns are fixedly installed at the center position of the upper side of the mounting cross plate, and the fixing plate is fixedly installed on the upper side of the fixing column, the upper end of the adjusting screw is rotatably installed on the fixing plate, and the adjusting sleeve is fixedly installed on the center position of the linkage block, and the adjusting sleeve is connected to the adjusting screw by threaded sleeve.

[0010] The first screw is fixedly mounted on the second sliding block, and the first screw is fixedly mounted on the second sliding block, and the first screw is fixedly mounted on the second sliding block through a threaded connection. The first screw is fixedly mounted on the second sliding block, and the first screw is fixedly mounted on the second sliding block. The first screw is fixedly mounted on the second sliding block, and the first screw is fixedly mounted on the second sliding block. The second sliding block is fixedly mounted on the second sliding block

[0011] The cam is fixedly mounted on the first movable frame, and the cam is mounted on a first end of the second movable frame and a second end of the second movable frame.

[0012] Preferably, the coating liquid detection mechanism also includes a second drive motor, a third screw, a fourth slider, a third screw sleeve, a third insertion groove and a pressing arc plate. The second drive motor is fixedly installed on the upper side of the second movable frame, and the third screw is rotatably installed in the second movable frame. The third screw is fixedly connected to the output shaft of the second drive motor. The fourth slider is slidably installed in the second movable frame. The third screw sleeve is fixedly installed at the center position of the fourth slider. The third screw sleeve is threadedly connected to the third screw. The fixed block is fixedly installed on the fourth slider. A third insertion groove is opened at the center position of the fixed block, and a pressing arc plate is movably arranged in the third insertion groove.

[0013] Preferably, the coating liquid detection mechanism also includes a fourth screw, a first guide rod, a fourth screw sleeve and a first guide groove. The fourth screw is rotatably installed on the pressing arc plate, and the first guide rods are fixedly installed on the upper and lower sides of the pressing arc plate. The fourth screw sleeve is fixedly installed on the fixed block, and two groups of first guide grooves are opened on the fixed block. The first guide grooves are located on the upper and lower sides of the fourth screw sleeve. The fourth screw is installed in the fourth screw sleeve through a thread, and the first guide rod is movably inserted in the first guide groove.

[0014] Preferably, the coating liquid detection mechanism further includes a connecting side plate, a first arc block, a guide block, a guide hole, a second guide groove, a second guide rod, a second arc block, a first movable hole, a third spring, a third guide rod, a connecting rope and a second movable hole, two sets of connecting side plates are fixedly installed on the lower side of the coupling liquid loading box, one end of the connecting side plate is fixedly installed with the first arc block, two sets of guide blocks are fixedly installed on the first arc block, guide holes are provided on the guide blocks, second guide grooves are provided on the edges of the second movable frame, second guide rods are fixedly installed in the second guide grooves, and the guide blocks are slidably installed on the second guide The second guide rod is inserted into the guide hole, and second arc blocks are fixedly installed on both sides of the second movable frame. The two groups of second arc blocks are provided with a first movable hole, and the first arc block is fixedly installed on the third guide rod. The upper end of the third guide rod is movably inserted in the first movable hole, and a third spring is sleeved on the third guide rod, and the upper end of the third spring is against the lower side of the second arc block. A connecting rope is fixedly installed on the fourth slider, and two groups of second movable holes are provided on the second movable frame. The connecting rope is movably inserted in the second movable hole, and one end of the connecting rope is fixedly installed on the third guide rod.

[0015] Preferably, the coating liquid detection mechanism also includes a threaded water inlet plug, a limiting cylinder, a movable cylinder, a liquid drawing block, a first flow hole, a second movable rod, a second movable groove, a fixed round block, a water blocking block, a second flow hole, a fixed long plate, a pressing rod, a third movable groove and a fourth spring. A threaded water inlet plug is installed on the upper side of the coupling liquid loading box through a thread, two groups of limiting cylinders are fixedly installed on the lower side of the coupling liquid loading box, a movable cylinder is movably installed in the limiting cylinder, a liquid drawing block is fixedly installed on the lower side of the movable cylinder, a first flow hole is provided on the upper side of the movable cylinder, a second movable rod is fixedly installed at the center position of the upper end of the movable cylinder, two groups of second movable grooves are provided on the lower side of the coupling liquid loading box, and the second movable The position of the groove is opposite to the center position of the circle of the limiting cylinder, and the second movable rod is movably inserted in the second movable groove, and a fixed round block is fixedly installed on the upper side of the second movable rod, and a water-blocking block is fixedly installed in an array on the lower side of the fixed round block. Second flow holes are arranged in an array on the outer sides of the two groups of second movable grooves, and the position and shape of the second flow holes are adapted to the position and shape of the water-blocking blocks. A fixed long plate is fixedly installed in the coupling liquid loading box, and pressing rods are fixedly installed on the left and right ends of the lower side of the fixed long plate. A third movable groove is opened in the second movable rod, and the pressing rod is movably inserted in the third movable groove. A fourth spring is provided in the third movable groove, and one end of the fourth spring is against the pressing rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention can move automatically and has the ability to crawl in the vertical direction, so that the device can easily reach places that are difficult for workers to reach. The device has the ability to automatically apply coupling fluid and automatically detect, so that when workers are working at height, they only need to record the readings and do not need to conduct personal inspections. This can greatly increase the safety of workers' operations and avoid the adverse effects of dangerous environments on the readings. In addition, the device of the present invention has an automatic detection capability, which is essentially the controllable movement of the measuring head. Therefore, professionals with reading detection capabilities can easily operate the device without having to learn new technologies, which is conducive to saving the cost of equipment use. In addition, the automated activity can better determine the location of the abnormal point. Compared with manual detection, its detection is more regular and data collection is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a first detection structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of a second detection structure provided by an embodiment of the present invention; Figure 3 A schematic diagram of the main structure of the device provided in an embodiment of the present invention; Figure 4A schematic cross-sectional view of the structure of the walking mechanism provided in an embodiment of the present invention; Figure 5 A schematic diagram of the structural separation of the walking mechanism provided in an embodiment of the present invention; Figure 6 A schematic structural diagram of a coating liquid detection mechanism provided in an embodiment of the present invention; Figure 7 A schematic diagram of the structural separation of the driving mechanism provided in an embodiment of the present invention; Figure 8 A schematic diagram of the structure of the second movable frame provided by an embodiment of the present invention; Figure 9 A schematic cross-sectional view of the structure of the mounting tube provided by an embodiment of the present invention; Figure 10 A schematic diagram of the structural separation of a coating liquid detection mechanism provided by an embodiment of the present invention; Figure 11 A schematic cross-sectional view of the coupling liquid loading box provided in an embodiment of the present invention; Figure 12 The embodiment of the present invention provides Figure 3 A partially enlarged schematic diagram of A in FIG; Figure 13 The embodiment of the present invention provides Figure 11 A partial enlarged schematic diagram of B in FIG.

[0018] In the figure: 1. I-beam; 2. Mounting side panels; 3. L-shaped panels; 4. Mounting cross panels; 5. Travel mechanism; 501. Mounting plate; 502. Drive wheel; 503. Transmission connecting rod; 504. Travel belt; 505. Bottom roller; 506. First movable slot; 507. First movable rod; 508. First spring; 509. Side roller; 510. Double-headed motor; 6. Opening and closing mechanism; 601. First slider; 602. Drag-reducing roller; 603. First slide slot; 604. Linking block; 605. Articulated rod; 606. Fixed column; 607. Fixed plate; 608. Adjusting screw; 609, adjusting screw sleeve; 7, first movable frame; 8, driving mechanism; 801, mounting frame; 802, first driving motor; 803, first screw rod; 804, second slider; 805, first screw sleeve; 806, fixed connecting plate; 807, fixed connecting block; 808, first limiting block; 809, second screw rod; 810, fixed rear plate; 811, second screw sleeve; 812, first limiting groove; 813, third slider; 814, rotating groove; 815, ball bearing; 816, rolling groove; 817, rotating shaft; 818, first insertion groove; 819, engaging block; 820, second insertion groove; 821, mounting cylinder; 822, insertion rod; 823, second spring; 824, pull plate; 9, coating liquid detection mechanism; 901, second movable frame; 902, second drive motor; 903, third screw; 904, fourth slider; 905, third screw sleeve; 906, fixing block; 907, third insertion slot; 908, pressing arc plate; 909, fourth screw; 910, first guide rod; 911, fourth screw sleeve; 912, first guide slot; 913, coupling liquid loading box; 914, connecting side plate; 915, first arc block; 916, guide block; 917, guide hole; 91 8. Second guide groove; 919. Second guide rod; 920. Second arc block; 921. First movable hole; 922. Third spring; 923. Third guide rod; 924. Connecting rope; 925. Second movable hole; 926. Threaded water inlet plug; 927. Limiting cylinder; 928. Movable cylinder; 929. Liquid drawing block; 930. First circulation hole; 931. Second movable rod; 932. Second movable groove; 933. Fixed round block; 934. Water blocking block; 935. Second circulation hole; 936. Fixed long plate; 937. Pressing rod; 938. Third movable groove; 939. Fourth spring. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-13 The present invention provides a technical solution: a strength testing device for steel structures in construction projects, comprising an I-beam 1, with mounting side panels 2 provided on the front and rear sides of the I-beam 1, with L-shaped panels 3 provided on both sets of mounting side panels 2, with opposite sides of the two sets of L-shaped panels 3 provided on mounting transverse panels 4, and a first movable frame 7 fixedly installed on the front side of the mounting transverse panels 4; The walking mechanism 5 includes a driving wheel 502 and a double-headed motor 510. The double-headed motor 510 is fixedly mounted at the center of the mounting cross plate 4, and the driving wheel 502 is arranged at the output shaft of the double-headed motor 510. The opening and closing mechanism 6 includes a linkage block 604 and a hinged rod 605. The linkage block 604 is movably provided on the upper side of the center position of the horizontal plate 4. Both sides of the linkage block 604 are hinged with hinged rods 605. The other end of the hinged rod 605 is hinged on the L-shaped plate 3. The driving mechanism 8 includes a mounting frame 801 and a second slider 804. The mounting frame 801 is movably arranged on one side of the first movable frame 7. The second slider 804 is movably arranged in the mounting frame 801. The coating liquid detection mechanism 9 comprises a second movable frame 901, a fixed block 906, and a coupling liquid loading box 913. The second movable frame 901 is mounted on the second slider 804, and the fixed block 906 and coupling liquid loading box 913 are movably mounted on the second movable frame 901. This device is capable of moving on the I-beam 1, while simultaneously applying coupling liquid to the areas of the I-beam 1 requiring inspection or clamping a detection head on the fixed block 906 for inspection. Driven by the drive mechanism 8, it not only moves vertically relative to the I-beam 1 but also deforms to inspect the sides of the I-beam 1, enhancing the device's comprehensiveness during inspection. The device is primarily used for inspecting high or difficult-to-detect areas. It is suitable for I-beams 1 with no noticeable surface impurities such as rust. If the surface has thick rust, it requires pre-polishing. The advantage of this device lies in its ability to move, automatically apply coupling agent, and automatically detect. This allows for a wider inspection range, including vertically, when inspecting steel structures at height. Workers only need to operate the device, eliminating the need to repeatedly hold a handheld detection head for inspection, significantly improving worker safety during inspections. Furthermore, if an anomaly is discovered during inspection and the distance between the anomaly and the weld needs to be measured, the automatically moving device can record the distance traveled, making the measurement more convenient. The opening and closing mechanism 6 allows the device to adapt to different types of I-beams 1, expanding its application range.

[0021] Furthermore, the walking mechanism 5 also includes a mounting plate 501, a transmission connecting rod 503 and a walking belt 504. The mounting plates 501 are fixedly mounted on both sides of the mounting cross plate 4. Three sets of driving wheels 502 are rotatably mounted on the two sets of mounting plates 501. A set of transmission connecting rods 503 is rotatably mounted on the three sets of driving wheels 502. The three sets of driving wheels 502 are all sleeved with walking belts 504. The walking belts 504 are in contact with the surface of the I-beam 1. The output shaft of the double-headed motor 510 is fixedly connected to the center position of the middle driving wheel 502. The schematic diagram of this structure is as follows: Figure 4 and Figure 5 The transmission connecting rod 503 is located outside the three sets of drive wheels 502, and the rotation mounting point is not located at the center of the drive wheels 502. Therefore, when the middle drive wheel 502 is driven by the double-headed motor 510, the other two sets of drive wheels 502 can be driven to rotate synchronously in the same direction. The installation of the running belt 504 can increase the contact area and friction between the equipment and the I-beam 1, thereby making the equipment more stable when driven by the double-headed motor 510 and providing conditions for the equipment to move along the vertical I-beam 1. Furthermore, the walking mechanism 5 also includes a bottom roller 505, a first movable groove 506, a first movable rod 507, a first spring 508 and a side roller 509. Two groups of bottom rollers 505 are rotatably installed on the opposite sides of the two sets of mounting side plates 2. The bottom rollers 505 are against the surface of the I-beam 1. The two sets of mounting side plates 2 are both provided with a first movable groove 506. The first movable rod 507 is movably inserted into the first movable groove 506. The first spring 508 is sleeved on the first movable rod 507. One side of the first spring 508 is against the inner wall of the first movable groove 506. The side rollers 509 are rotatably installed on the first movable rod 507. The two groups of side rollers 509 are against both sides of the upper end of the I-beam 1. The side rollers 509 are rotatably installed on the L-shaped plate 3. Damping rubber rings are fixedly installed on the side rollers 509 and the bottom rollers 505. The schematic diagram of this structure is as follows: Figure 4 The main function of this structure is to enable the installation side plate 2 and the L-shaped plate 3 to be engaged with the upper side of the I-beam 1, and when the equipment is in motion, the sliding resistance of the contact surface with the I-beam 1 is converted into rolling resistance, which is smaller. The L-shaped plate 3 can press the installation cross plate 4 under the action of the first spring 508, so that the walking belt 504 fits tightly with the surface of the I-beam 1, thereby increasing the friction between the walking belt 504 and the I-beam 1 and improving the stability of the equipment during movement. At the same time, the movable L-shaped plate 3 can also adapt to different types of I-beams 1, increasing the adaptability of the equipment; Furthermore, the opening and closing mechanism 6 also includes a first slider 601, a drag reduction roller 602, a first slide 603, a fixed column 606, a fixed plate 607, an adjusting screw 608 and an adjusting screw sleeve 609. The lower end of the opposite side of the L-shaped plate 3 is fixedly installed with a first slider 601, and two groups of drag reduction rollers 602 are rotatably installed on both sides of the first slider 601. Two groups of first slides 603 are opened on the upper side of the mounting cross plate 4. The first slider 601 is slidably installed in the first slide 603 to reduce the drag. The roller 602 abuts against the inner wall of the first chute 603. An adjusting screw 608 is rotatably mounted at the center of the upper side of the mounting cross plate 4. Two sets of fixing columns 606 are fixedly mounted at the center of the upper side of the mounting cross plate 4. A fixing plate 607 is fixedly mounted on the upper side of the fixing columns 606. The upper end of the adjusting screw 608 is rotatably mounted on the fixing plate 607. An adjusting screw sleeve 609 is fixedly mounted at the center of the linkage block 604. The adjusting screw sleeve 609 is threadedly connected to the adjusting screw 608. The schematic diagram of this structure is as follows: Figure 5 and Figure 12 This structure allows the two sets of L-shaped plates 3 to move relative to each other, allowing the side rollers 509 to fit tightly against the surface of the I-beam 1, making the device more stable. In addition, the L-shaped plates 3 can be relatively far apart, which also allows the device to clamp I-beams 1 of different sizes, enhancing the adaptability of the device during use. Furthermore, the driving mechanism 8 also includes a first driving motor 802, a first screw 803, a first screw sleeve 805, a fixed connecting plate 806, a fixed connecting block 807, a first limiting block 808, a second screw 809, a fixed rear plate 810, a second screw sleeve 811, and a first limiting groove 812. The first driving motor 802 is fixedly installed at one end of the mounting frame 801, and the first screw 803 is rotatably installed in the mounting frame 801. The output shaft of the first driving motor 802 is fixedly connected to the first screw 803. The first screw sleeve 805 is fixedly installed on the second slider 804, and the first screw sleeve 805 is connected to the first screw 803 through a threaded sleeve. On one side of the second slider 804, a fixed connecting plate 806 is fixedly installed, and a fixed connecting block 807 is fixedly installed on the upper side of the fixed connecting plate 806. Two groups of first limiting blocks 808 are fixedly installed on one side of the fixed connecting block 807. A second screw 809 is movably inserted into the fixed connecting block 807. A fixed rear plate 810 is fixedly installed on one side of the second movable frame 901. Two groups of second screw sleeves 811 are fixedly installed on the fixed rear plate 810. Two groups of first limiting grooves 812 are opened on the fixed rear plate 810. The second screw 809 is installed in the second screw sleeve 811 through a thread. The first limiting block 808 is movably inserted in the first limiting groove 812. The schematic diagram of this structure is as follows: Figure 7 and Figure 8This structure enables the second movable frame 901 to move along with the second slider 804. The length of the mounting frame 801 is greater than the width and height of the I-beam 1. Combined with the self-propelled function of the device, the probe fixed on the coating liquid detection mechanism 9 can fully detect the surface of the I-beam 1, thereby increasing the functionality of the device. Since there are two sets of second screw sleeves 811, there are two situations in which the second movable frame 901 and the second slider 804 are relatively fixed: one is to detect the upper surface of the I-beam 1, using the second screw sleeve 811 on the lower side. Figure 1 Another is to detect the side surface of the I-beam 1, using the second screw sleeve 811 on the upper side as shown; Figure 2 As shown. Since the traveling mechanism 5 of the equipment is always installed on the upper surface of the I-beam 1, there is a certain distance between it and the side surface of the I-beam 1 during side detection. Therefore, this distance can be offset by using the second screw sleeve 811 in different positions. In addition, the lifting function of the coating liquid detection mechanism 9 itself can achieve comprehensive detection of the surface of the I-beam 1. Furthermore, the driving mechanism 8 also includes a third slider 813, a rotating groove 814, a ball 815, a rolling groove 816, a rotating shaft 817, a first insertion groove 818, a locking block 819, a second insertion groove 820, a mounting tube 821, an insertion rod 822, a second spring 823 and a pull plate 824. The third slider 813 is slidably installed in the first movable frame 7. The upper and lower sides of the third slider 813 are both rotatably installed with balls 815. The upper and lower sides of the first movable frame 7 are provided with rolling grooves 816. The balls 815 roll in the rolling grooves 816. The third slider 813 is provided with a rotating groove 814. The rotating groove 814 is rotatably installed with a ball. The movable shaft 817 is fixedly mounted on the mounting frame 801. A first insertion slot 818 is provided on one side of the rotating shaft 817. A snap-fit block 819 is fixedly mounted on the rear end of the mounting frame 801. The snap-fit block 819 is inserted into the first movable frame 7. A second insertion slot 820 is provided on the snap-fit block 819. A mounting cylinder 821 is fixedly mounted on the rear end of the first movable frame 7. An insertion rod 822 is movably inserted into the mounting cylinder 821. A second spring 823 is sleeved on the insertion rod 822. A pull plate 824 is fixedly mounted on one end of the insertion rod 822. The shape of the insertion rod 822 matches the shape of the first insertion slot 818 and the second insertion slot 820. The schematic diagram of the structure is as follows: Figure 7 and Figure 9 , this structure is used to limit and convert the position of the installation frame 801. When the insertion rod 822 is inserted into the second insertion groove 820, the installation frame 801 is in Figure 1 When the insertion rod 822 is inserted into the first insertion groove 818, the installation frame 801 is in the state of Figure 2 The side surface of the I-beam 1 can be coated and inspected. Figure 1In the state, the engaging block 819 is inserted into the first movable frame 7 as shown in FIG. Figure 7 As shown, the rear end of the first movable frame 7 is open but the rolling groove 816 is not connected to the outside world. At this time, the locking block 819 is inserted into the first movable frame 7 and fixed by the insertion rod 822, and the installation frame 801 cannot rotate; Figure 2 In the state, the insertion rod 822 is inserted into the first insertion groove 818, and the rotating shaft 817 cannot rotate, thereby achieving position limiting; Furthermore, the coating liquid detection mechanism 9 also includes a second drive motor 902, a third screw 903, a fourth slider 904, a third screw sleeve 905, a third insertion slot 907 and a pressing arc plate 908. The second drive motor 902 is fixedly installed on the upper side of the second movable frame 901, and the third screw 903 is rotatably installed in the second movable frame 901. The third screw 903 is fixedly connected to the output shaft of the second drive motor 902. The fourth slider 904 is slidably installed in the second movable frame 901. The third screw sleeve 905 is fixedly installed at the center position of the fourth slider 904. The third screw sleeve 905 is connected to the third screw 903 through a threaded sleeve. The fixed block 906 is fixedly installed on the fourth slider 904. The third insertion slot 907 is opened at the center position of the fixed block 906. The pressing arc plate 908 is movably provided in the third insertion slot 907. The schematic diagram of this structure is as follows: Figure 10 This structure allows the fixed block 906 to be raised and lowered. Since ultrasonic testing probes come in a variety of types and lengths, the liftable fixed block 906, after securing the probe, can be raised and lowered to allow the probe to conform to the surface of the I-beam 1, improving the adaptability of the device during use. This lifting function also facilitates the subsequent discharge of the coupling fluid from the coupling fluid loading box 913, enhancing the functionality of the device. Furthermore, the coating liquid detection mechanism 9 also includes a fourth screw 909, a first guide rod 910, a fourth screw sleeve 911 and a first guide groove 912. The fourth screw 909 is rotatably mounted on the arc pressing plate 908. The first guide rods 910 are fixedly mounted on the upper and lower sides of the arc pressing plate 908. The fourth screw sleeve 911 is fixedly mounted on the fixed block 906. Two groups of first guide grooves 912 are opened on the fixed block 906. The first guide grooves 912 are located on the upper and lower sides of the fourth screw sleeve 911. The fourth screw 909 is installed in the fourth screw sleeve 911 through a thread. The first guide rod 910 is movably inserted in the first guide groove 912. The schematic diagram of this structure is as follows: Figure 10 The detection head is fixed by clamping the arc plate 908, which can adapt to detection heads of different widths and improve the adaptability of the equipment. In the actual detection process, it may be necessary to frequently replace the detection head or adjust the tilt angle of the detection head. This clamping method facilitates the replacement and angle adjustment of the detection head. Furthermore, the coating liquid detection mechanism 9 also includes a connecting side plate 914, a first arc block 915, a guide block 916, a guide hole 917, a second guide groove 918, a second guide rod 919, a second arc block 920, a first movable hole 921, a third spring 922, a third guide rod 923, a connecting rope 924 and a second movable hole 925. Two sets of connecting side plates 914 are fixedly installed on the lower side of the coupling liquid loading box 913, and a first arc block 915 is fixedly installed on one end of the connecting side plate 914. Two sets of guide blocks 916 are fixedly installed on the first arc block 915. Guide holes 917 are provided on the guide blocks 916. Second guide grooves 918 are provided on the edges of the second movable frame 901. Second guide rods 919 are fixedly installed in the second guide grooves 918. The guide blocks 916 slide The second movable frame 901 is movably mounted in the second guide groove 918, and the second guide rod 919 is inserted into the guide hole 917. Second arc blocks 920 are fixedly mounted on both sides of the second movable frame 901. Both sets of second arc blocks 920 are provided with first movable holes 921. A third guide rod 923 is fixedly mounted on the first arc block 915. The upper end of the third guide rod 923 is movably inserted into the first movable hole 921. A third spring 922 is sleeved on the third guide rod 923. The upper end of the third spring 922 is against the lower side of the second arc block 920. A connecting rope 924 is fixedly mounted on the fourth slider 904. Two sets of second movable holes 925 are provided on the second movable frame 901. The connecting rope 924 is movably inserted into the second movable hole 925. One end of the connecting rope 924 is fixedly mounted on the third guide rod 923. The schematic diagram of this structure is as follows: Figure 10 This structure makes the coupling liquid loading box 913 fall when the fixed block 906 rises, and the coupling liquid loading box 913 rises when the fixed block 906 falls, thereby realizing the process of testing after applying the coupling liquid. The two functions do not interfere with each other, which improves the stability and functionality of the device during use. This relative movement method is used when the device is in Figure 2 It is also applicable to the side surface detection position, further enhancing the stability of the device in different detection scenarios; Furthermore, the coating liquid detection mechanism 9 also includes a threaded water inlet plug 926, a limiting cylinder 927, a movable cylinder 928, a liquid drawing block 929, a first flow hole 930, a second movable rod 931, a second movable groove 932, a fixed round block 933, a water blocking block 934, a second flow hole 935, a fixed long plate 936, a pressing rod 937, a third movable groove 938 and a fourth spring 939. A threaded water inlet plug 926 is threadedly installed on the upper side of the coupling liquid loading box 913, and two groups of limiting cylinders 927 are fixedly installed on the lower side of the coupling liquid loading box 913. A movable cylinder 928 is movably installed in the limiting cylinder 927, and a liquid drawing block 929 is fixedly installed on the lower side of the movable cylinder 928. A first flow hole 930 is provided on the upper side of the movable cylinder 928, and a second movable rod 931 is fixedly installed at the center position of the upper end of the movable cylinder 928. Two groups of second movable Slot 932, the position of the second movable slot 932 is opposite to the center position of the limiting cylinder 927, the second movable rod 931 is movably inserted in the second movable slot 932, the upper side of the second movable rod 931 is fixedly installed with a fixed round block 933, the lower side of the fixed round block 933 is fixedly installed with a water blocking block 934, the outer sides of the two groups of second movable slots 932 are arranged with second flow holes 935, the position and shape of the second flow holes 935 are adapted to the position and shape of the water blocking block 934, a fixed long plate 936 is fixedly installed in the coupling liquid loading box 913, and pressing rods 937 are fixedly installed at the left and right ends of the lower side of the fixed long plate 936, a third movable slot 938 is opened in the second movable rod 931, the pressing rod 937 is movably inserted in the third movable slot 938, a fourth spring 939 is provided in the third movable slot 938, and one end of the fourth spring 939 is against the pressing rod 937. The schematic diagram of this structure is as follows: Figure 11 and Figure 13 A housing compatible with the liquid-absorbing block 929 is fixedly mounted on the underside of the arc-pressing plate 908. The liquid-absorbing block 929 is installed within the housing to reduce evaporation of the coupling fluid. When the liquid-absorbing block 929 is pressed against the surface of the I-beam 1, the water-blocking block 934 disengages from the second flow hole 935, allowing the coupling fluid to flow through the second flow hole 935 and into the liquid-absorbing block 929 through the first flow hole 930, thereby coating the surface of the I-beam 1. When the liquid-absorbing block 929 is free of force, the second flow hole 935 is sealed to prevent leakage. Combined with the lifting function of the coupling fluid loading box 913, automatic liquid coating can be achieved.

[0022] Working principle: The steps of using the present invention are as follows: Equipment installation and travel start: The adjusting screw 608 is rotated forward, and the threaded transmission of the adjusting screw sleeve 609 drives the linkage block 604 to descend, so that the hinge rod 605 is gradually horizontal. At this time, the first slider 601 slides in the first sliding groove 603, pushing the L-shaped plate 3 relatively away.

[0023] Place the device on top of the I-beam 1 and rotate the adjusting screw 608 in the opposite direction to bring the L-shaped plate 3 closer together until the bottom roller 505 contacts the upper edge of the I-beam 1 and the side roller 509 contacts the outer side of the upper end of the I-beam 1. This completes the installation. The running belt 504 is now in contact with the upper side of the I-beam 1.

[0024] Start the double-headed motor 510, and its output shaft drives the middle driving wheel 502 to rotate, which drives the other two sets of driving wheels 502 to rotate synchronously through the transmission connecting rod 503, and then drives the walking belt 504 to rotate, so that the equipment can move along the I-beam 1.

[0025] Installation of the detection head and application of coupling fluid: Insert the detection head into the third insertion slot 907, rotate the fourth screw 909, and drive the pressing arc plate 908 to move through the threaded transmission of the fourth screw sleeve 911. At the same time, the first guide rod 910 slides in the first guide slot 912 to achieve the clamping and fixing of the detection head by the pressing arc plate 908.

[0026] When coupling fluid is required, the second drive motor 902 is activated, and its output shaft rotates the third screw 903. This, in turn, drives the fourth slider 904 upward through the threaded drive of the third screw sleeve 905, gradually loosening the connecting rope 924. Under the elastic force of the third spring 922, the first curved block 915 lowers the coupling fluid loading box 913, allowing the liquid-absorbing block 929 to contact the surface of the I-beam 1.

[0027] When the liquid-sucking block 929 is stressed, the movable cylinder 928 rises, compressing the fourth spring 939. Simultaneously, the water-blocking block 934 disengages from the second flow hole 935, allowing the coupling fluid to flow from the second flow hole 935 through the first flow hole 930 into the liquid-sucking block 929. The first drive motor 802 is activated, and its output shaft rotates the first screw 803. This, through the threaded drive of the first screw sleeve 805, causes the second movable frame 901 to reciprocate along the mounting frame 801, allowing the liquid-sucking block 929 to apply the coupling fluid to the surface of the I-beam 1.

[0028] Detection operation: After the coating is completed, the second drive motor 902 is started to rotate in the opposite direction, driving the fixed block 906 to descend. During the process, the connecting rope 924 pulls the third guide rod 923 upward, driving the connecting side plate 914 and the coupling liquid loading box 913 to rise, so that the liquid absorbing block 929 is separated from the surface of the I-beam 1 until the detection head contacts the surface of the I-beam 1 and the detection begins.

[0029] Side detection mode switch: When it is necessary to inspect the side of the I-beam 1, pull the pull plate 824 to pull the insertion rod 822 out of the second insertion slot 820, slide the installation frame 801 along the first movable frame 7 to the end, rotate the installation frame 801 to rotate the rotating shaft 817 ninety degrees, and now the first insertion slot 818 is aligned with the insertion rod 822.

[0030] Release the pull plate 824. Under the force of the second spring 823, the insertion rod 822 is inserted into the first insertion slot 818 to fix the rotation angle of the mounting frame 801. If there is a gap between the second movable frame 901 and the side of the I-beam 1, unscrew the second screw 809, move the second movable frame 901 so that the second screw 809 aligns with the other set of second screw sleeves 811, and screw it in to complete the side detection position adjustment.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A strength testing device for a steel structure of a construction project, comprising an I-beam (1), wherein the I-beam (1) is provided with mounting side plates (2) on both the front and rear sides, and characterized in that: The two groups of mounting side plates (2) are both provided with L-shaped plates (3), and the opposite sides of the two groups of L-shaped plates (3) are both provided on the mounting transverse plate (4), and the front side of the mounting transverse plate (4) is fixedly provided with a first movable frame (7); A walking mechanism (5), the walking mechanism (5) comprising a driving wheel (502) and a double-headed motor (510), the double-headed motor (510) being fixedly mounted at the center of the mounting transverse plate (4), and the driving wheel (502) being arranged at the output shaft of the double-headed motor (510); An opening and closing mechanism (6), the opening and closing mechanism (6) comprising a linkage block (604) and a hinged rod (605), the linkage block (604) being movably provided on the upper side of the center position of the mounting transverse plate (4), the hinged rods (605) being hinged on both sides of the linkage block (604), the other end of the hinged rod (605) being hinged on the L-shaped plate (3); A driving mechanism (8), the driving mechanism (8) comprising a mounting frame (801) and a second slider (804), the mounting frame (801) being movably arranged on one side of the first movable frame (7), and the second slider (804) being movably arranged in the mounting frame (801); A coating liquid detection mechanism (9), the coating liquid detection mechanism (9) comprising a second movable frame (901), a fixed block (906) and a coupling liquid loading box (913), the second movable frame (901) being arranged on a second slider (804), and the fixed block (906) and the coupling liquid loading box (913) being movably mounted on the second movable frame (901).

2. The strength testing equipment for steel structures in construction projects according to claim 1, characterized in that: The walking mechanism (5) further comprises a mounting plate (501), a transmission connecting rod (503) and a walking belt (504), wherein the mounting plates (501) are fixedly mounted on both sides of the mounting transverse plate (4), three sets of driving wheels (502) are rotatably mounted on the two sets of mounting plates (501), a set of transmission connecting rods (503) are rotatably mounted on the three sets of driving wheels (502), and a walking belt (504) is sleeved on the three sets of driving wheels (502), wherein the walking belt (504) is in contact with the surface of the I-beam (1), and the output shaft of the double-headed motor (510) is fixedly connected to the center position of the middle driving wheel (502).

3. The strength testing equipment for steel structures in construction projects according to claim 1, characterized in that: The walking mechanism (5) further comprises a bottom roller (505), a first movable groove (506), a first movable rod (507), a first spring (508) and a side roller (509). Two groups of bottom rollers (505) are rotatably mounted on opposite sides of the two groups of mounting side plates (2). The bottom rollers (505) abut against the surface of the I-beam (1). The two groups of mounting side plates (2) are both provided with a first movable groove (506). A first movable rod (507) is movably inserted into the first movable groove (506). 07), a first spring (508) is sleeved on the first movable rod (507), one side of the first spring (508) is against the inner wall of the first movable groove (506), and a side roller (509) is rotatably installed on the first movable rod (507), two groups of the side rollers (509) are against the two sides of the upper end of the I-beam (1), and the side rollers (509) are rotatably installed on the L-shaped plate (3), and damping rubber rings are fixedly installed on the side rollers (509) and the bottom rollers (505).

4. The strength testing equipment for steel structures in construction projects according to claim 1, characterized in that: The opening and closing mechanism (6) further comprises a first slider (601), a drag reduction roller (602), a first slide groove (603), a fixed column (606), a fixed plate (607), an adjusting screw (608) and an adjusting screw sleeve (609), wherein the first slider (601) is fixedly mounted on the lower end of the opposite side of the L-shaped plate (3), two groups of drag reduction rollers (602) are rotatably mounted on both sides of the first slider (601), two groups of first slide grooves (603) are opened on the upper side of the mounting cross plate (4), the first slider (601) is slidably mounted in the first slide grooves (603), the drag reduction rollers (602) are rotatably mounted on both sides of the first slider (601), and the first slider (601) is slidably mounted in the first slide grooves (603). The wheel (602) abuts against the inner wall of the first slide groove (603); an adjusting screw (608) is rotatably mounted at the center position of the upper side of the mounting cross plate (4); two sets of fixed columns (606) are fixedly mounted at the center position of the upper side of the mounting cross plate (4); a fixed plate (607) is fixedly mounted on the upper side of the fixed column (606); the upper end of the adjusting screw (608) is rotatably mounted on the fixed plate (607); an adjusting screw sleeve (609) is fixedly mounted at the center position of the linkage block (604); and the adjusting screw sleeve (609) is connected to the adjusting screw (608) through a threaded sleeve.

5. The strength testing equipment for steel structures in construction projects according to claim 1, characterized in that: The driving mechanism (8) further comprises a first driving motor (802), a first screw (803), a first screw sleeve (805), a fixed connecting plate (806), a fixed connecting block (807), a first limiting block (808), a second screw (809), a fixed rear plate (810), a second screw sleeve (811), and a first limiting groove (812); the first driving motor (802) is fixedly mounted on one end of the mounting frame (801); the first screw (803) is rotatably mounted in the mounting frame (801); the output shaft of the first driving motor (802) is fixedly connected to the first screw (803); the first screw sleeve (805) is fixedly mounted on the second sliding block (804); the first screw sleeve (805) is connected to the first screw (803) by a threaded sleeve; A fixed connecting plate (806) is fixedly installed on one side of the second sliding block (804), a fixed connecting block (807) is fixedly installed on the upper side of the fixed connecting plate (806), two groups of first limiting blocks (808) are fixedly installed on one side of the fixed connecting block (807), a second screw rod (809) is movably inserted on the fixed connecting block (807), a fixed rear plate (810) is fixedly installed on one side of the second movable frame (901), two groups of second screw sleeves (811) are fixedly installed on the fixed rear plate (810), two groups of first limiting grooves (812) are opened on the fixed rear plate (810), the second screw rod (809) is installed in the second screw sleeve (811) through a thread, and the first limiting block (808) is movably inserted in the first limiting groove (812).

6. The strength testing equipment for steel structures in construction projects according to claim 1, characterized in that: The driving mechanism (8) further comprises a third slider (813), a rotating groove (814), a ball (815), a rolling groove (816), a rotating shaft (817), a first insertion groove (818), a locking block (819), a second insertion groove (820), a mounting tube (821), an insertion rod (822), a second spring (823) and a pull plate (824), wherein the third slider (813) is slidably mounted in the first movable frame (7), and the ball (815) is rotatably mounted on both the upper and lower sides of the third slider (813), and the rolling groove (816) is provided on both the upper and lower sides of the first movable frame (7), and the ball (815) rolls in the rolling groove (816), and the third slider (813) is provided with a rotating groove (814), and the rotating shaft (814) is rotatably mounted in the rotating groove (814). 17), the rotating shaft (817) is fixedly mounted on the mounting frame (801), a first insertion groove (818) is provided on one side of the rotating shaft (817), a locking block (819) is fixedly mounted on the rear end of the mounting frame (801), the locking block (819) is inserted into the first movable frame (7), a second insertion groove (820) is provided on the locking block (819), a mounting tube (821) is fixedly mounted on the rear end of the first movable frame (7), an insertion rod (822) is movably inserted into the mounting tube (821), a second spring (823) is sleeved on the insertion rod (822), a pull plate (824) is fixedly mounted on one end of the insertion rod (822), and the shape of the insertion rod (822) is adapted to the shapes of the first insertion groove (818) and the second insertion groove (820).

7. The strength testing equipment for steel structures in construction projects according to claim 1, characterized in that: The coating liquid detection mechanism (9) further comprises a second driving motor (902), a third screw (903), a fourth slider (904), a third screw sleeve (905), a third insertion slot (907) and a pressing arc plate (908); the second driving motor (902) is fixedly mounted on the upper side of the second movable frame (901); the third screw (903) is rotatably mounted in the second movable frame (901); the third screw (903) is fixedly connected to the output shaft of the second driving motor (902); The fourth slider (904) is slidably mounted in the second movable frame (901), a third screw sleeve (905) is fixedly mounted at the center of the fourth slider (904), the third screw sleeve (905) is threadedly sleeved on the third screw rod (903), the fixed block (906) is fixedly mounted on the fourth slider (904), a third insertion groove (907) is opened at the center of the fixed block (906), and a pressing arc plate (908) is movably arranged in the third insertion groove (907).

8. The strength testing equipment for steel structures in construction projects according to claim 7, characterized in that: The coating liquid detection mechanism (9) further includes a fourth screw (909), a first guide rod (910), a fourth screw sleeve (911) and a first guide groove (912); the fourth screw (909) is rotatably mounted on the arc pressing plate (908); the first guide rods (910) are fixedly mounted on the upper and lower sides of the arc pressing plate (908); the fourth screw sleeve (911) is fixedly mounted on the fixed block (906); two groups of first guide grooves (912) are provided on the fixed block (906); the first guide grooves (912) are located on the upper and lower sides of the fourth screw sleeve (911); the fourth screw (909) is threadedly mounted in the fourth screw sleeve (911); and the first guide rod (910) is movably inserted in the first guide groove (912).

9. The strength testing equipment for steel structures in construction projects according to claim 7, characterized in that: The coating liquid detection mechanism (9) further comprises a connecting side plate (914), a first arc block (915), a guide block (916), a guide hole (917), a second guide groove (918), a second guide rod (919), a second arc block (920), a first movable hole (921), a third spring (922), a third guide rod (923), a connecting rope (924) and a second movable hole (925). Two groups of connecting side plates (914) are fixedly mounted on the lower side of the coupling liquid loading box (913), a first arc block (915) is fixedly mounted on one end of the connecting side plate (914), two groups of guide blocks (916) are fixedly mounted on the first arc block (915), guide holes (917) are provided on the guide blocks (916), second guide grooves (918) are provided on the edges of the second movable frame (901), second guide rods (919) are fixedly mounted in the second guide grooves (918), and the guide blocks (916) are slidably mounted. In the second guide groove (918), the second guide rod (919) is inserted into the guide hole (917), and second arc blocks (920) are fixedly installed on both sides of the second movable frame (901). The two groups of the second arc blocks (920) are each provided with a first movable hole (921). A third guide rod (923) is fixedly installed on the first arc block (915), and the upper end of the third guide rod (923) is movably inserted into the first movable hole (921). A third spring (922) is sleeved on the guide rod (923), the upper end of the third spring (922) is against the lower side of the second arc block (920), a connecting rope (924) is fixedly installed on the fourth slider (904), two groups of second movable holes (925) are opened on the second movable frame (901), the connecting rope (924) is movably inserted into the second movable holes (925), and one end of the connecting rope (924) is fixedly installed on the third guide rod (923).

10. The strength testing equipment for steel structures in construction projects according to claim 1, characterized in that: The coating liquid detection mechanism (9) further includes a threaded water inlet plug (926), a limiting cylinder (927), a movable cylinder (928), a liquid drawing block (929), a first flow hole (930), a second movable rod (931), a second movable groove (932), a fixed round block (933), a water blocking block (934), a second flow hole (935), a fixed long plate (936), a pressing rod (937), a third movable groove (938) and a fourth spring (939). The upper side of the coupling liquid loading box (913) is provided with a threaded water inlet plug (926), a limiting cylinder (927), a movable cylinder (928), a liquid drawing block (929), a first flow hole (930), a second movable rod (931), a second movable groove (932), a fixed round block (933), a water blocking block (934), a second flow hole (935), a fixed long plate (936), a pressing rod (937), a third movable groove (938) and a fourth spring (939). The coupling liquid loading box (913) is provided with a plug (926), two sets of limiting cylinders (927) are fixedly installed on the lower side of the coupling liquid loading box (913), a movable cylinder (928) is movably installed in the limiting cylinder (927), a liquid drawing block (929) is fixedly installed on the lower side of the movable cylinder (928), a first flow hole (930) is opened on the upper side of the movable cylinder (928), a second movable rod (931) is fixedly installed at the center position of the upper end of the movable cylinder (928), and two sets of second movable grooves (931) are opened on the lower side of the coupling liquid loading box (913). 2), the position of the second movable groove (932) is opposite to the center position of the limiting cylinder (927), the second movable rod (931) is movably inserted in the second movable groove (932), the upper side of the second movable rod (931) is fixedly installed with a fixed round block (933), the lower side of the fixed round block (933) is fixedly installed with a water blocking block (934) in an array, and the outer sides of the two groups of the second movable grooves (932) are both provided with a second flow hole (935) in an array, and the position and shape of the second flow hole (935) are the same as those of the water blocking block ( 934), a fixed long plate (936) is fixedly installed in the coupling liquid loading box (913), and pressing rods (937) are fixedly installed on the left and right ends of the lower side of the fixed long plate (936). A third movable groove (938) is provided in the second movable rod (931), and the pressing rod (937) is movably inserted in the third movable groove (938). A fourth spring (939) is provided in the third movable groove (938), and one end of the fourth spring (939) is against the pressing rod (937).

Images