Water immersion type submerged scraper conveyor and self-adaptive chain transmission device

Abstract

The invention relates to the technical field of solid slag removal equipment, in particular to a water immersion type scraper slag salvaging machine and a self-adaptive chain transmission device.The water immersion type scraper slag salvaging machine comprises a machine table, a partition plate for conveying sludge is fixed to the center of the inner wall of the machine table, and chains are arranged at the upper end and the lower end of the outer wall of the partition plate; according to the chain tensioning device, the arranged auxiliary chain wheel is matched with the tensioning chain wheel so that the tensioning degree of the chain can be adjusted, the magnitude of counter-acting force caused by the chain to the tensioning chain wheel is checked through the pressure sensor in the using process, and therefore the tensioning degree of the chain can be adjusted. When the numerical value is smaller than the set standard value, the situation that the chain is lengthened can be judged, and the electric control telescopic rod can control the tensioning chain wheel to move downwards to guarantee the tensioning force on the chain, so that the situation that the chain is derailed due to the fact that the chain is lengthened is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of solid slag removal equipment, and in particular to a water-immersed scraper slag remover and an adaptive chain transmission device. Background Art

[0002] The water-immersed scraper is a device used for solid waste treatment and liquid separation, and is widely used in mining, metallurgy, environmental protection and chemical industries. Its main function is to effectively collect and discharge solid materials such as slag and slag deposited on the bottom of the water through a scraper device to achieve the separation of solids and liquids.

[0003] At present, almost all slag scoop machines use round chain as the transmission part to connect the scraper. When the chain is used for a long time, the boiler is long, resulting in a large span of the slag scoop machine. After long-term operation, it is easy to cause the chain to be elongated and not tightened in time, which can easily cause the chain to derail. Therefore, the chain needs to be cut frequently, and there are still some shortcomings in its use. If the chain is not adjusted properly, such as too tight or too loose, it will aggravate wear or cause failure. In daily maintenance, if the chain is not checked and adjusted in time, the risk of failure will also increase.

[0004] In summary, it is necessary to invent an adaptive chain transmission device for a water-immersed scraper dredger. Summary of the invention

[0005] To this end, the present invention provides an adaptive chain transmission device for a water-immersed scraper dredger, which can solve the problem that after long-term operation, the chain will easily be elongated and cannot be tightened in time, which may easily cause the chain to derail, and thus the chain needs to be cut frequently.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adaptive chain transmission device of a water-immersed scraper dredger, comprising a machine platform, a partition for conveying mud slag is arranged inside the machine platform, chains are arranged above and below the partition, and an adjusting component for adjusting the tension of the chain is arranged at the bottom of the machine platform, a pressure sensor and a driving component are arranged in the adjusting component, and a control signal input end of the driving component of the adjusting component and the pressure sensor are connected to a control center.

[0007] Furthermore, transmission sprockets are arranged at both ends of the machine, and both ends of the chain are meshed with the transmission sprockets. A support frame is arranged on the outer side of the machine near the feed port, and a power motor is arranged on the support frame. The power motor is connected to the transmission sprocket and drives the transmission sprocket.

[0008] Furthermore, a gearbox is arranged between the output shaft of the power motor and the driving sprocket.

[0009] Furthermore, the adjusting component includes a tensioning sprocket, auxiliary sprockets are arranged on both sides of the tensioning sprocket, the auxiliary sprockets are rotatably connected to the inner wall of the machine through a rotating shaft, and the chain is meshed with the auxiliary sprockets and the tensioning sprocket.

[0010] Furthermore, the two auxiliary sprockets are located on the lower side of the chain, and the tensioning sprocket is located on the upper side of the chain.

[0011] Furthermore, a clamping frame is provided at the front and rear ends of the outer wall of the tensioning sprocket, and an electrically controlled telescopic rod is fixed to the bottom of the machine below the clamping frame. The output end of the electrically controlled telescopic rod passes through the machine shell and is connected to the clamping frame; the tensioning sprocket is installed on the clamping frame through a rotating shaft.

[0012] Furthermore, an installation groove is opened at the position where the rotating shaft is installed on the clamping frame, and a hollow sleeve shaft is fixed to the inner wall of the installation groove. The end of the rotating shaft away from the tensioning sprocket is inserted into the hollow sleeve shaft, and a pressure sensor is arranged on the inner wall of the hollow sleeve shaft above the rotating shaft, and the bottom end of the pressure sensor abuts against the top end of the outer wall of the rotating shaft.

[0013] Furthermore, the pressure sensor is arranged at the connection between the output end of the electric-controlled telescopic rod and the clamping frame.

[0014] Furthermore, a scraper plate is fixedly connected to the chain, and the scraper plate is a bent plate, and the bending direction is toward the direction of scraping off the bottom slag.

[0015] The present invention can also provide a water-immersed scraper dredger, which adopts the adaptive chain transmission device of the water-immersed scraper dredger.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: The present invention uses a pressure sensor to check the size of the reaction force caused by the chain on the tensioning sprocket. When the value is less than a set standard value, it can be determined that the chain is stretched. The electrically controlled telescopic rod can control the tensioning sprocket to move downward by adjusting the component to ensure the tensioning force on the chain, thereby reducing the chain derailment caused by the stretched chain, and is convenient to use.

[0017] Furthermore, the adjusting component includes a tensioning sprocket, and auxiliary sprockets are arranged on both sides of the tensioning sprocket. The auxiliary sprocket is rotatably connected to the inner wall of the machine through a rotating shaft, and the chain is meshed with the auxiliary sprocket and the tensioning sprocket; the two auxiliary sprockets are located on the lower side of the chain, and the tensioning sprocket is located on the upper side of the chain. The tension of the chain can be adjusted by cooperating with the tensioning sprocket through the arranged auxiliary sprocket. The auxiliary sprocket is located on the lower side of the chain and works together with the tensioning sprocket to provide correct guidance for the chain, which helps to prevent the chain from shifting or running off the track during operation, ensures the smooth operation of the chain, and reduces wear and failure caused by poor guidance; a stable supporting structure is formed by rotatably connecting the auxiliary sprocket and the tensioning sprocket to the inner wall of the machine through the rotating shaft.

[0018] Furthermore, an installation groove is provided at the position where the rotating shaft is installed on the clamping frame, and a hollow sleeve shaft is fixed to the inner wall of the installation groove, and the end of the rotating shaft away from the tensioning sprocket is inserted into the hollow sleeve shaft, and a pressure sensor is provided on the inner wall of the hollow sleeve shaft above the rotating shaft, and the bottom end of the pressure sensor abuts against the top end of the outer wall of the rotating shaft. When the equipment is running, the tensioning sprocket is connected to the chain through the rotating shaft to adjust the tension of the chain. When the tension of the chain changes, the rotating shaft will be subjected to corresponding force, and this force will be transmitted to the pressure sensor in the hollow sleeve shaft. The pressure sensor converts the sensed force into an electrical signal and outputs it to the control system. The control system can adjust the position of the tensioning sprocket in real time according to the received signal, thereby achieving precise control of the chain tension.

[0019] Furthermore, a scraper plate is fixedly connected to the chain, and the scraper plate is a bent plate, and the bending direction is toward the scraping direction of the bottom ash. When scraping the bottom ash, the direction of the scraper plate and the partition are no longer completely vertical, but have a certain angle. By designing the scraper plate as a bent plate, and the bending direction is toward the scraping direction of the bottom ash, the bottom ash can be scraped off from the bottom of the boiler more effectively. When the scraper plate moves, the bent design can better push the bottom ash forward and reduce the accumulation of bottom ash in the original position, thereby improving the scraping efficiency. By forming a certain angle between the scraper plate and the partition, the resistance of the bottom ash can be reduced, making the scraping process smoother, and allowing the scraper to better cut into the bottom ash during the forward process, instead of directly facing the full-section resistance of the bottom ash. By reducing the resistance of the bottom ash, the stress and wear borne by the scraper and chain during operation can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a partial cross-sectional structure of the present invention in the front view direction; Figure 2 It is a schematic diagram of the connection structure of the chain and the scraper plate in the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the tensioning sprocket and the clamping frame in the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0021] In the figure: 100, machine table; 200, partition; 210, chain; 211, scraper plate; 220, transmission sprocket; 300, support frame; 310, power motor; 400, auxiliary sprocket; 410, tensioning sprocket; 411, rotating shaft; 420, electric control telescopic rod; 430, clamping frame; 440, hollow sleeve shaft; 441, pressure sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "horizontal", "top", "bottom", "inside", "outside", "side", "one end", "one side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] refer to Figure 1 and Figure 2 The present invention provides an adaptive chain transmission device for a water-immersed scraper dredger, comprising a machine 100, a partition 200 for conveying sludge is arranged inside the machine 100, a chain 210 is arranged above and below the partition 200, and an adjusting component for adjusting the tension of the chain 210 is arranged at the bottom of the machine 100, a pressure sensor 441 and a driving component are arranged in the adjusting component, and a control signal input end of the driving component of the adjusting component and the pressure sensor 441 are connected to a control center. The adjusting components are arranged on both sides of the scraper to make the chain tensioned synchronously. By setting up the adjustment components composed of pressure sensors and drive components, the chain tension can be automatically monitored and adjusted. The adaptive tensioning mechanism ensures that the chain is always in an appropriate tension state during operation, avoiding both chain relaxation caused by insufficient tension and chain wear caused by excessive tension. By setting up adjustment components on both sides of the scraper, the chain can be tensioned synchronously, ensuring the smooth operation of the chain during the entire conveying process, reducing vibration and deviation caused by uneven tension on one side, and improving the operating stability of the equipment. At the same time, the setting of the sensor allows the control system to monitor the tension state of the chain in real time. If the tension force deviates from the preset safety range, the control system can quickly adjust the chain tension through the drive component to achieve instant feedback and correction, which helps to improve the response speed and adaptability of the system.

[0025] Transmission sprockets 220 are arranged at both ends of the machine 100, and both ends of the chain 210 are meshed with the transmission sprockets 220. A support frame 300 is arranged on the outer side of the machine 100 near the feed port, and a power motor 310 is arranged on the support frame 300. The power motor 310 is connected to the transmission sprocket 220 and drives the transmission sprocket 220. The adjusting component includes a tensioning sprocket 410, and auxiliary sprockets 400 are arranged on both sides of the tensioning sprocket 410. The auxiliary sprocket 400 is rotatably connected to the inner wall of the machine 100 through a rotating shaft, and the chain 210 is meshed with the auxiliary sprocket 400 and the tensioning sprocket 410.

[0026] Example 1, refer to the attached Figure 1 The present invention provides an adaptive chain transmission device for a water-immersed scraper slag dredger, comprising a machine platform 100. A partition 200 for conveying mud slag is arranged at the inner center of the machine platform 100. The partition 200 is arranged to assist in conveying the slag bottom, so that the scraper plate 211 can move the slag bottom toward the discharge port when moving, and finally discharge it from the discharge port. Chains 210 are arranged above and below the partition 200. The arranged chain 210 rotates with a transmission sprocket 220. When the chain and the sprocket rotate, the slag bottom can be discharged from the bottom of the slag dredger through the scraper plate 211. Transmission sprockets 220 are arranged on both sides of the front and rear ends of the machine platform 100, and both ends of the chain 210 are meshed with the transmission sprocket 220. The transmission sprocket 220 is used to drive the chain 210 to rotate. A support frame 300 is provided on the outer side of the machine 100 near the feed port. The top of the support frame 300 is fixedly connected to a power motor 310. The power motor 310 is arranged at the front end of the transmission sprocket 220 at the corresponding position. The output shaft of the power motor 310 passes through the shell of the machine 100 and is fixedly connected to the transmission sprocket 220 at the corresponding position. The support frame 300 provides a suitable height for the power motor 310 and supports it. The power motor 310 drives the transmission sprocket 220 connected thereto to rotate through the output shaft, so that the transmission sprocket 220 can cooperate with the transmission sprocket 220 at the discharge port to drive the entire chain 210 to rotate.

[0027] Optionally, a gearbox can be provided between the output shaft of the power motor 310 and the transmission sprocket 220. The gearbox can be used to adjust the speed to achieve the operating speed under different working conditions. By adjusting the speed of the gearbox, the operating speed of the equipment can be adjusted according to different working conditions. For example, when a larger conveying capacity is required, the conveying efficiency can be increased by increasing the speed; and when fine control or processing of heavier materials is required, the speed can be appropriately reduced to ensure the processing effect.

[0028] refer to Figure 1 , Figure 3 and Figure 4An adjusting component for adjusting the tension of the chain 210 is provided on one side of the inner bottom end of the machine 100, a scraper plate 211 is fixed on the inner wall side of the chain 210, and the adjusting component includes a tensioning sprocket 410, and auxiliary sprockets 400 are provided on both sides of the tensioning sprocket 410. The front ends of the auxiliary sprockets 400 are rotatably connected to the bottom of the inner wall front end of the machine 100 through a rotating rod, and the chains 210 are meshed with the auxiliary sprockets 400 and the tensioning sprocket 410. The chain 210 is meshed at the upper parts of the two auxiliary sprockets 400, and the chain 210 is meshed with the lower part of the tensioning sprocket 410, and the auxiliary sprocket 400 is arranged to cooperate with the tensioning sprocket 410 to adjust the tension of the chain 210, and the tensioning sprocket 410 is arranged on the clamping frame On 430, an electrically controlled telescopic rod 420 is arranged below the machine 100 and below the clamping frame 430. The output end of the electrically controlled telescopic rod 420 passes through the shell of the machine 100 and is connected to the bottom end of the clamping frame 430. The clamping frame 430 is used to support and install the tensioning sprocket 410. The electrically controlled telescopic rod 420 drives the clamping frame 430 to move up and down through the output end, and can adjust the position of the tensioning sprocket 410. The tension of the chain 210 can be adjusted by cooperating with the fixed auxiliary sprocket 400. A rotating shaft 411 is installed on the tensioning sprocket 410. The rotating shaft 411 is a two-section structure, and the two sections can rotate relative to each other. When in use, the rotating shaft 411 can be fixed to the inner wall of the hollow sleeve shaft 440 , installation grooves are provided at the front and rear sides of the inner wall of the clamping frame 430 and at the positions corresponding to the rotating shaft 411, and the inner walls of the installation grooves are fixed with hollow sleeve shafts 440, and the ends of the rotating shaft 411 away from the tensioning sprocket 410 are inserted into the hollow sleeve shaft 440, and the hollow sleeve shaft 440 is used to replace the clamping frame 430 and is fixedly connected with the end of the rotating shaft 411, and the pressure sensor 441 is located at the top of the inner wall of the hollow sleeve shaft 440 and above the rotating shaft 411, and the bottom end of the pressure sensor 441 is in contact with the top of the outer wall of the rotating shaft 411, and the arranged pressure sensor 441 can be fixed to the top of the inner wall of the hollow sleeve shaft 440 by screws or adhesive, and the arranged pressure sensor 441 can be fixed to the outer wall of the rotating shaft 411 by screws or adhesive. The top ends abut against each other, thereby being able to detect the pressure exerted on the rotating shaft 411 and the tensioning sprocket 410. Specifically, when a person controls the electric-controlled telescopic rod 420 to move up and down to adjust the tension of the chain 210, the chain 210 will also exert an upward reaction force on the tensioning sprocket 410, and the pressure sensor 441 can detect the magnitude of the reaction force exerted on the tensioning sprocket 410, and transmit it to the control panel of the device through a data line. When the value detected by the pressure sensor 441 becomes smaller, it can be concluded that the tension of the chain 210 becomes smaller and the chain 210 becomes loose, and the device can control the electric-controlled telescopic rod 420 to contract, so that the tensioning sprocket 410 moves downward to adjust the tension of the chain 210.

[0029] The tensioning sprocket 410 is used to adjust the tension of the chain to ensure that the chain maintains an appropriate tightness during operation. The auxiliary sprocket 400 supports and guides the chain to help the chain transition smoothly between the tensioning sprockets and reduce the vibration and wear of the chain. The auxiliary sprockets are arranged on both sides of the tensioning sprocket and are rotatably connected to the inner wall of the machine through a rotating shaft to ensure that the chain can smoothly bypass the auxiliary sprocket and engage with the tensioning sprocket. The chain 210 is used to transmit power and drive components such as scrapers to work. The chain transmits power through the meshing relationship with the auxiliary sprocket and the tensioning sprocket to ensure the normal operation of the mechanical equipment.

[0030] The power motor 310 described in the present application can be replaced by a hydraulic drive device. The hydraulic drive system can provide a large power output to ensure that the scraper can efficiently scrape and transport materials in an underwater environment. The hydraulic system has stable power output and good overload protection characteristics, so that the water-immersed scraper can still maintain stable operation when facing complex working conditions and harsh environments. When the load changes, it can automatically achieve stepless speed regulation of the scraper's conveying speed to adapt to changes in the amount of slag discharged by the boiler. In specific optimization, a set of hydraulic drive equipment can also be set at both ends of the chain.

[0031] The chain 210 is fixedly connected with a scraper plate 211, which is a bent plate or an arc plate, and the bending direction or curvature direction is toward the bottom slag scraping direction. By designing the scraper plate to be a bent or arc structure, the bottom slag can be scraped up from the bottom and pushed to the outlet more effectively, thereby improving the efficiency and thoroughness of scraping slag, ensuring that the material can be thoroughly transported out, and is particularly suitable for processing materials with high water content or small particles. Since the bent or arc scraper plate can treat the material more gently, the friction between the material and the equipment is reduced, which helps to reduce the wear of the equipment.

[0032] In addition, the scraper plate 211 can also adopt a bucket structure. The design of the bucket structure enables the scraper plate 211 to capture and collect materials more effectively during movement, especially for materials with poor fluidity or strong adhesion. This design helps to reduce the residue of materials at the bottom of the equipment and improve the efficiency of material collection; traditional flat scrapers may cause material blockage or stagnation when processing materials with large particle size or irregular shape. The scraper plate 211 with a bucket structure can better guide the flow of materials, reduce material blockage, and ensure the continuous and stable operation of the equipment through its unique structural design; the scraper plate 211 with a bucket structure can better adapt to materials of different shapes and sizes, improve the versatility and adaptability of the equipment, and is suitable for a variety of industrial application environments.

[0033] The device described in this application can be used in the mining industry, metallurgical industry, environmental protection industry, and chemical industry.

[0034] In Example 2, the pressure sensor can also be set at the connection between the output end of the electric-controlled telescopic rod and the clamping frame, and can also indirectly feedback the tension state of the chain. There is no friction risk at this connection, and it is only subjected to pressure load, thereby improving the reliability and safety of the pressure sensor.

[0035] The use process of the present invention is as follows: the structural components are installed according to the above description, and then the device is installed in the system that needs to discharge slag, and the slag bottom will fall onto the partition 200 when it is precipitated from the water, and the power motor 310 can drive the transmission sprocket 220 connected thereto to rotate after being energized, so that the transmission sprocket 220 can drive the chain 210 to rotate, and the chain 210 will scrape the slag bottom on the partition 200 through the scraper plate 211 when rotating, so that the slag bottom is discharged from the slag discharge port on the right side of the machine 100; During the rotation of the chain 210, the electrically controlled telescopic rod 420 can pull the clamping frame 430 to move up and down through the output shaft, and the tensioning sprocket 410 can cooperate with the auxiliary sprocket 400 set at a fixed position to adjust the tension of the chain 210. During the adjustment, the chain 210 will also apply an upward reaction force to the tensioning sprocket 410, and the pressure sensor 441 can detect the reaction force exerted on the tensioning sprocket 410 and transmit it to the control panel of the device through the data cable. When the pressure sensor is detected, When the value detected by the device 441 becomes smaller, it can be concluded that the tension of the chain 210 becomes smaller, and the chain 210 becomes loose. The device can control the electric-controlled telescopic rod 420 to contract, so that the tensioning sprocket 410 moves downward to adjust the tension of the chain 210. Conversely, the tensioning sprocket 410 can be controlled to move upward to increase the tension of the chain 210. Specifically, the adjustment of the tension of the chain 210 needs to be judged based on the pressure detected by the pressure sensor 441. The technicians can obtain the pressure value that needs to be adjusted through specific experiments.

[0036] Multiple sets of guide wheels are set in the middle of the chain to restrain the chain and prevent it from falling off. The number and position of the guide wheels are reasonably set according to the length of the slag picker and the specifications of the chain. Ensure that the guide wheels can be evenly distributed in the middle of the chain to form effective support and restraint for the chain.

[0037] Based on the above embodiments, the adaptive chain transmission device of the water-immersed scraper dredger of the present invention is used in the water-immersed scraper dredger, which can be used in new construction projects and can also be used to transform old equipment.

[0038] The above is only a preferred embodiment of the present invention. Any person skilled in the art may modify the present invention by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. An adaptive chain transmission device for a water-immersed scraper dredger, characterized in that: The machine comprises a platform (100), wherein a partition (200) for conveying sludge is arranged inside the platform (100), a chain (210) is arranged above and below the partition (200), and an adjusting component for adjusting the tension of the chain (210) is arranged at the bottom of the platform (100), a pressure sensor (441) and a driving component are arranged in the adjusting component, and a driving component control signal input end of the adjusting component and the pressure sensor (441) are connected to a control center.

2. The adaptive chain transmission device of a water-immersed scraper dredger according to claim 1 is characterized in that: Transmission sprockets (220) are arranged at both ends of the machine (100), and both ends of the chain (210) are meshed with the transmission sprockets (220). A support frame (300) is arranged on the outer side of the machine (100) near the feed inlet, and a power motor (310) is arranged on the support frame (300). The power motor (310) is connected to the transmission sprocket (220) and drives the transmission sprocket (220).

3. The adaptive chain transmission device of a water-immersed scraper dredger according to claim 2 is characterized in that: A gearbox is provided between the output shaft of the power motor (310) and the driving sprocket (220).

4. The adaptive chain transmission device of a water-immersed scraper according to claim 1 is characterized in that: The adjusting component comprises a tensioning sprocket (410), auxiliary sprockets (400) are arranged on both sides of the tensioning sprocket (410), the auxiliary sprockets (400) are rotatably connected to the inner wall of the machine platform (100) via a rotating shaft, and the chain (210) is meshed with the auxiliary sprockets (400) and the tensioning sprocket (410).

5. The adaptive chain transmission device of a water-immersed scraper dredger according to claim 4, characterized in that: The two auxiliary sprockets (400) are located on the lower side of the chain (210), and the tensioning sprocket (410) is located on the upper side of the chain (310).

6. The adaptive chain transmission device of a water-immersed scraper dredger according to claim 4, characterized in that: A clamping frame (430) is provided at the front and rear ends of the outer wall of the tensioning sprocket (410); an electric control telescopic rod (420) is fixed to the bottom of the machine platform (100) below the clamping frame (430); the output end of the electric control telescopic rod (420) passes through the housing of the machine platform (100) and is connected to the clamping frame (430); the tensioning sprocket (410) is mounted on the clamping frame (430) via a rotating shaft (411).

7. The adaptive chain transmission device of a water-immersed scraper according to claim 6, characterized in that: A mounting groove is provided on the clamping frame (430) at a position where the rotating shaft (411) is mounted, and a hollow sleeve shaft (440) is fixed to the inner wall of the mounting groove. One end of the rotating shaft (411) away from the tensioning sprocket (410) is inserted into the hollow sleeve shaft (440), and a pressure sensor (441) is provided on the inner wall of the hollow sleeve shaft (440) located above the rotating shaft (411), and the bottom end of the pressure sensor (441) is in contact with the top end of the outer wall of the rotating shaft (411).

8. The adaptive chain transmission device of a water-immersed scraper according to claim 6, characterized in that: The pressure sensor (441) is arranged at the connection between the output end of the electric control telescopic rod (420) and the clamping frame (430).

9. The adaptive chain transmission device of a water-immersed scraper according to claim 1, characterized in that: A scraper plate (211) is fixedly connected to the chain (210), and the scraper plate (211) is a bent plate or an arc-shaped plate, and the bending direction or the curving direction is toward the bottom slag scraping direction.

10. A water-immersed scraper dredger, characterized in that: The adaptive chain transmission device of the water-immersed scraper dredger as described in any one of claims 1 to 9 is adopted.

Images