Telescopic surveying rod for surveying and mapping intertidal zone

Abstract

The invention relates to the technical field of intertidal zone surveying and mapping equipment, in particular to a telescopic surveying rod for intertidal zone surveying and mapping, which comprises an unmanned aerial vehicle, an accessory box is arranged at the lower part of the unmanned aerial vehicle, a satellite positioning assembly, an inertial navigation assembly, an encoder and a single-beam sounding assembly are arranged in the accessory box, and a telescopic rod is arranged below the accessory box. A surveying and mapping ball is connected to the bottom of the telescopic rod, and a balancing weight is arranged on the surveying and mapping ball; the unmanned aerial vehicle and the accessory box are detachably mounted, a mounting bracket is fixedly welded to the bottom of the telescopic rod, a filtering bin is fixedly welded to the bottom of the mounting bracket, a floating bin is arranged below the filtering bin, and a sampling bin is arranged below the floating bin. The unmanned aerial vehicle is matched with the telescopic rod to achieve the intertidal zone surveying and mapping function, and the technical problems that the surveying and mapping precision is affected by jolting running during surveying and mapping of a surveying and mapping vehicle, and the surveying and mapping capacity for an intertidal zone deepwater area is extremely limited are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of intertidal zone surveying and mapping equipment, and particularly to a telescopic measuring rod for intertidal zone surveying and mapping. Background Art

[0002] The intertidal zone is a transitional area between land and sea, referring to the coastal zone between the highest high tide level and the lowest low tide level during spring tides. It is submerged by seawater during high tides and exposed during low tides. Its formation is due to the periodic ebb and flow of tides under the gravitational action of the moon and the sun, and it has significant daily variation characteristics. This area includes three sub-zones: the high tide zone, the middle tide zone, and the low tide zone. It is an ecologically sensitive area with frequent wave action and active nutrient exchange, and has extremely high biodiversity.

[0003] As a treasure house of marine resources, the intertidal zone harbors important ecosystems such as salt marsh wetlands and benthic biological communities. Mapping its topographical changes can monitor dynamics such as coastal erosion and silt deposition, providing data support for mangrove restoration and biological habitat protection. The intertidal zone is a key construction area for projects such as offshore wind power and cross-sea bridges. Precise mapping of topographical elevation and substrate characteristics (such as the thickness of the silt layer) can optimize project site selection and avoid geological risks. At the same time, the surveying and mapping data is used to establish tidal models to predict the threats of storm surges and sea level rise to the coastal zone.

[0004] In the prior art, the surveying and mapping of the intertidal zone is usually carried out using a survey vehicle. However, for deep water areas, a surveying ball needs to be used in cooperation for the surveying operation. During the surveying process, the bumpy driving of the survey vehicle will seriously affect the surveying accuracy, and at the same time, the surveying ability for the deep water areas of the intertidal zone is extremely limited. Summary of the Invention

[0005] The purpose of the present invention is to provide a telescopic measuring rod for intertidal zone surveying and mapping to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution. A telescopic measuring rod for intertidal zone surveying and mapping includes a drone. A fitting box is provided below the drone. A satellite positioning component, an inertial navigation component, an encoder, and a single-beam sounding component are arranged in the fitting box. A telescopic rod is provided below the fitting box. A surveying ball is connected to the bottom of the telescopic rod, and a counterweight is arranged on the surveying ball. The drone and the fitting box are detachably installed. An installation bracket is also welded and fixed to the bottom of the telescopic rod. A filter bin is welded and fixed to the bottom of the installation bracket. A floating bin is provided below the filter bin, and a sampling bin is provided below the floating bin.

[0007] Preferably, a heat dissipation port is also arranged on the fitting box.

[0008] As a preference of the above technical solution, an internal pressure regulating solenoid valve, a balance solenoid valve and a flushing solenoid valve are arranged on the upper end surface of the filtering bin, and the filtering bin is communicated with the internal pressure regulating solenoid valve, the balance solenoid valve and the flushing solenoid valve; One end of the internal pressure regulating solenoid valve is also communicated with one end of a hose, and the other end of the hose is communicated with a blow-suction dual-purpose air pump; One end of the flushing solenoid valve is also communicated with one end of a copper pipe, and the other end of the copper pipe is communicated with a spray head; A filter screen is arranged at the bottom of the internal cavity of the filtering bin, and a floating bin is welded and connected to the lower part of the filtering bin; a piston plate is arranged in the internal cavity of the floating bin, and the piston plate slides up and down on the inner wall of the floating bin. A sampling rod is welded and fixed to the lower end surface of the piston plate; a connecting flange is arranged at the bottom of the floating bin, a sampling bin is arranged at the bottom of the connecting flange, and the floating bin is detachably connected with the sampling bin through the connecting flange; a sampling channel is arranged in the internal cavity of the sampling bin, and the bottom of the sampling rod extends out of the sampling channel and is welded and connected with a sampling plate.

[0009] As a preference of the above technical solution, a reinforcing rib is welded and fixed on the mounting bracket.

[0010] As a preference of the above technical solution, a sealing plate is welded at the outer edge of the piston plate.

[0011] As a preference of the above technical solution, a guide plate is welded at the top of the sampling channel.

[0012] As a preference of the above technical solution, an external attachment plate is bolted to the accessory box, and a steering wheel is also welded on the external attachment plate.

[0013] As a preference of the above technical solution, a mounting rod is welded at the bottom of the external attachment plate, a mounting sleeve is sleeved on the mounting rod in a left-right sliding manner, the top end of the telescopic rod is welded and fixed on the mounting sleeve, baffles are welded and fixed at the left and right ends of the mounting sleeve, and a buffer spring is also sleeved on the mounting rod.

[0014] The present invention provides a telescopic measuring rod for intertidal zone mapping, which has the following beneficial effects: 1. A heat dissipation port is arranged on the accessory box, which can play a role in ventilation and heat dissipation for the satellite positioning component, inertial navigation component, encoder and single-beam sounding component arranged in the accessory box, and can also reduce the signal blockage.

[0015] 2. During surveying, the balancing solenoid valve is in the open state, and the internal pressure regulating solenoid valve and the flushing solenoid valve are in the closed state. At this time, water enters the filter chamber, filling the filter chamber and the floating chamber on the upper part of the piston plate. The filter chamber and the floating chamber on the upper part of the piston plate are consistent with the seawater pressure. The floating chamber at the lower part of the piston plate is connected with the sampling chamber, and the sampling chamber is connected with the outside world through the sampling channel. Therefore, the entire filter chamber, floating chamber and sampling chamber will not play the role of a float, and will not affect the normal surveying and mapping of the surveying ball.

[0016] 3. When sampling, when the sampling rod is pushed downward, the blowing and suction dual-purpose air pump is in the blowing mode, the flushing solenoid valve is in the closed state, and the internal pressure regulating solenoid valve and the balancing solenoid valve are in the alternating intermittent switching state. In this way, when the balancing solenoid valve is closed and the internal pressure regulating solenoid valve is opened, the piston plate can be pushed downward for a short distance, and then the seawater is poured from the balancing solenoid valve by closing the internal pressure regulating solenoid valve and opening the balancing solenoid valve to balance the internal and external pressures, and finally the sampling plate is pushed out for sampling; after the sampling is completed, the blowing and suction dual-purpose air pump is switched to the suction mode, and the sampling rod is lifted in the same way, so that the sample on the sampling plate will enter the sampling chamber through the sampling channel; finally, the sampling rod is lifted and lowered in the sampling chamber in the above manner to realize the up and down swing of the sampling rod in the sampling chamber, and the sample on the sampling plate is vibrated and falls into the sampling chamber to complete the sampling; at the same time, by setting a detachable sampling chamber, it is convenient to remove and replace it after the sampling chamber is completed.

[0017] 4. When the surveying ball is entangled with seaweed and other plants on the seabed, the device can be used to free it. The method of freeing it is to first raise the piston plate to the highest position through the sampling operation, and then close the balance solenoid valve and the flushing solenoid valve, open the internal pressure regulating solenoid valve, set the blowing and suction dual-purpose air pump to the blowing mode, and inflate the floating tank until the piston plate is lowered to the lowest position. At this time, the internal space of the floating tank can provide the maximum buoyancy in the seawater, driving the telescopic rod and the surveying ball to float up and complete the escape.

[0018] 5. After completing the escape, you can open the flushing solenoid valve again to spray and clean the dirt attached to the outer surface of the surveying ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is an enlarged view of the drone of the present invention; Figure 3 Based Figure 1 A magnified view of part A; Figure 4 It is a cross-sectional view of the filtering chamber, the floating chamber and the sampling chamber in the present invention; Figure 5 It is a partial cross-sectional view of the sampling chamber in the present invention.

[0020] In the figure: 1, unmanned aerial vehicle; 2, accessory box; 3, heat dissipation port; 4, satellite positioning component; 5, inertial navigation component; 6, encoder; 7, single-beam sounding component; 8, outer attachment plate; 9, mounting rod; 10, mounting sleeve; 11, baffle; 12, buffer spring; 13, telescopic rod; 14, surveying and mapping ball; 15, mounting bracket; 16, reinforcing rib; 17, internal pressure regulating solenoid valve; 18, balance solenoid valve; 19, flushing solenoid valve; 20, filter chamber; 21, filter screen; 22, floating chamber; 23, piston plate; 24, sealing plate; 25, sampling rod; 26, connecting flange; 27, sampling chamber; 28, sampling plate; 29, material guiding plate; 30, sampling channel; 31, sample storage chamber; 32, hose; 33, copper pipe; 34, nozzle; 35, counterweight; 36, blow-suction dual-purpose air pump; 37, steering wheel. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] As Figures 1 - 4 shown, in this embodiment, a telescopic measuring rod for intertidal zone surveying and mapping includes an unmanned aerial vehicle 1. A accessory box 2 is arranged below the unmanned aerial vehicle 1. A satellite positioning component 4, an inertial navigation component 5, an encoder 6 and a single-beam sounding component 7 are arranged in the accessory box 2. A telescopic rod 13 is arranged below the accessory box 2. The bottom of the telescopic rod 13 is connected with a surveying and mapping ball 14, and a counterweight 35 is arranged on the surveying and mapping ball 14; The unmanned aerial vehicle 1 and the accessory box 2 are detachably installed. The bottom of the telescopic rod 13 is also welded and fixed with a mounting bracket 15. The bottom of the mounting bracket 15 is welded and fixed with a filter chamber 20. A floating chamber 22 is arranged below the filter chamber 20. A sampling chamber 27 is arranged below the floating chamber 22; the filter chamber 20 is used for filtering seawater to prevent sundries from entering the floating chamber 22 and causing wear of the precision seals inside the floating chamber 22, thereby affecting its airtightness and resulting in the failure of the floating function; the sampling chamber 27 can take samples of the bottom soil biomass in the tidal zone during the surveying and mapping process of the surveying and mapping ball 14.

[0023] In specific implementation, a heat dissipation port 3 is also arranged on the accessory box 2, which can play a role in ventilation and heat dissipation for the satellite positioning component 4, inertial navigation component 5, encoder 6 and single-beam sounding component 7 arranged in the accessory box 2, and can also reduce signal blockage.

[0024] It should be noted that the signal transmission and power supply between the satellite positioning component 4, inertial navigation component 5, encoder 6, single-beam sounding component 7 and the surveying and mapping ball 14 are all prior arts and will not be described in detail here.

[0025] As an implementation method in this embodiment, please refer toFigures 1 - 4 On the upper end face of the filtering bin 20, an internal pressure regulating solenoid valve 17, a balance solenoid valve 18 and a flushing solenoid valve 19 are provided, and the filtering bin 20 is communicated with the internal pressure regulating solenoid valve 17, the balance solenoid valve 18 and the flushing solenoid valve 19; One end of the internal pressure regulating solenoid valve 17 is also communicated with one end of a hose 32, and the other end of the hose 32 is communicated with a blow-suction dual-purpose air pump 36; One end of the flushing solenoid valve 19 is also communicated with one end of a copper pipe 33, and the other end of the copper pipe 33 is communicated with a spray head 34; the spray head 34 can be used to spray and clean the dirt attached to the outer surface of the surveying ball 14 to ensure the surveying accuracy of the surveying ball 14; A filter screen 21 is arranged at the bottom of the internal cavity of the filtering bin 20, and a floating bin 22 is welded and connected to the lower part of the filtering bin 20; the filter screen 21 can filter the seawater in the filtering bin 20 to prevent sundries from entering the floating bin 22 and causing wear of the precision seals inside the floating bin 22, thus affecting its airtightness and resulting in the failure of the floating function; a piston plate 23 is arranged in the internal cavity of the floating bin 22, and the piston plate 23 slides up and down on the inner wall of the floating bin 22. A sampling rod 25 is welded and fixed to the lower end face of the piston plate 23; a connecting flange 26 is arranged at the bottom of the floating bin 22, and a sampling bin 27 is arranged at the bottom of the connecting flange 26. The floating bin 22 is detachably connected to the sampling bin 27 through the connecting flange 26; by providing the detachable sampling bin 27, it is convenient to remove and replace it after the sampling bin 27 has completed sampling; a sampling channel 30 is arranged in the internal cavity of the sampling bin 27, and the bottom of the sampling rod 25 extends out of the sampling channel 30 and is welded and connected to a sampling plate 28; the sampling plate 28 is used for sampling the seabed soil.

[0026] Furthermore, a reinforcing rib 16 is welded and fixed on the mounting bracket 15, which can improve the connection stability of the mounting bracket 15.

[0027] Furthermore, a sealing plate 24 is welded at the outer edge of the piston plate 23, which can further improve the airtightness between the piston plate 23 and the floating bin 22.

[0028] In specific implementation, during surveying, the balance solenoid valve 18 is in an open state, and the internal pressure regulating solenoid valve 17 and the flushing solenoid valve 19 are in a closed state. At this time, water enters the filtering bin 20, filling the filtering bin 20 and the floating bin 22 above the piston plate 23. The pressure of the seawater in the filtering bin 20 and the floating bin 22 above the piston plate 23 is the same. However, since the floating bin 22 below the piston plate 23 is communicated with the sampling bin 27, and the sampling bin 27 is communicated with the outside through the sampling channel 30, the entire filtering bin 20, floating bin 22 and sampling bin 27 will not act as a float and will not affect the normal surveying of the surveying ball 14.

[0029] In a specific implementation, when sampling, when the sampling rod 25 is pushed downward, the blowing and suction dual-purpose air pump 36 is in the blowing mode, the flushing solenoid valve 19 is in the closed state, and the internal pressure regulating solenoid valve 17 and the balancing solenoid valve 18 are in the alternating intermittent switching state. In this way, when the balancing solenoid valve 18 is closed and the internal pressure regulating solenoid valve 17 is opened, the piston plate 23 can be pushed downward for a short distance, and then seawater is poured from the balancing solenoid valve 18 by closing the internal pressure regulating solenoid valve 17 and opening the balancing solenoid valve 18, and the balance The internal and external pressures are balanced, and finally the sampling plate 28 is pushed out for sampling; after the sampling is completed, the blowing and suction dual-purpose air pump 36 is switched to the suction mode, and the sampling rod 25 is lifted in the same way, so that the sample on the sampling plate 28 will enter the sampling chamber 27 through the sampling channel 30; finally, the sampling rod 25 is repeatedly lifted and lowered in the sampling chamber 27 in the above manner, so that the sampling rod 25 can swing up and down in the sampling chamber 27, and the sample on the sampling plate 28 is vibrated and dropped into the sampling chamber 27, and the sampling is completed.

[0030] It should be noted that the working states of the blowing and sucking dual-purpose air pump 36, the internal pressure regulating solenoid valve 17, the balancing solenoid valve 18 and the flushing solenoid valve 19 are controlled by a computer through programming, and the power supplies of the internal pressure regulating solenoid valve 17, the balancing solenoid valve 18 and the flushing solenoid valve 19 are also integrated on the filter bin 20. The hose 32 is a PU hose, which can adapt to the working environment in the sea and the working air pressure of the blowing and sucking dual-purpose air pump 36. These are all existing technologies, so they will not be described in detail.

[0031] In specific implementation, when the surveying ball 14 is entangled with water plants such as seaweed on the seabed, the device needs to be used to free it. The method of freeing it is to first raise the piston plate 23 to the highest position through the operation during sampling, and then close the balancing solenoid valve 18 and the flushing solenoid valve 19, open the internal pressure regulating solenoid valve 17, and set the blowing and suction dual-purpose air pump 36 to the blowing mode to inflate the floating bin 22 until the piston plate 23 is lowered to the lowest position. At this time, the internal space of the floating bin 22 can provide the maximum buoyancy in the seawater, driving the telescopic rod 13 and the surveying ball 14 to float up and complete the escape. After the escape is completed, the flushing solenoid valve 19 can be opened again to spray and clean the dirt attached to the outer surface of the surveying ball 14.

[0032] It should be noted that the upper and lower end surfaces of the floating chamber 22 are both provided with limit plates to prevent the piston plate 23 from falling off during the process of sliding up and down on the inner wall of the floating chamber 22 .

[0033] As an implementation method in this embodiment, please refer to Figure 4 and Figure 5 A material guide plate 29 is welded on the top of the sampling channel 30 , which can guide the sample on the sampling plate 28 to fall into the sampling chamber 27 and play a technical effect of guiding the sample.

[0034] In specific implementation, a storage bin 31 is provided at the bottom of the sampling bin 27. The storage bin 31 is specifically the space formed between the material guiding plate 29 and the sampling bin 27. The samples on the sampling plate 28 fall into the sampling bin 27 and finally fall into the sample storage bin 31 formed by the bottom of the sampling bin 27 and the lower end face of the material guiding plate 29, achieving a sealing effect. After sampling, the sampling bin 27 moves in seawater, and the sample storage bin 31 can protect the samples to remain intact in the sample storage bin 31.

[0035] As an implementation manner in this embodiment, please refer to Figure 1 and Figure 2 , an external attachment plate 8 is bolted to the accessory box 2, and a steering wheel 37 is also welded on the external attachment plate 8 for arranging the hose 32 to prevent the hose 32 from winding and knotting during operation.

[0036] It should be noted that a winding device is also provided between the hose 32 and the blow-suction dual-purpose air pump 36 for cooperating with the steering wheel 37 to prevent the hose 32 from winding and knotting. This is common general knowledge in the art, so no further description will be made.

[0037] As an implementation manner in this embodiment, please refer to Figure 2 , an installation rod 9 is welded at the bottom of the external attachment plate 8. An installation sleeve 10 is slidably sleeved on the installation rod 9 left and right. The top of the telescopic rod 13 is welded and fixed to the installation sleeve 10. Baffles 11 are welded and fixed at the left and right ends of the installation sleeve 10. A buffer spring 12 is also sleeved on the installation rod 9, which can achieve the technical effect of shock absorption and buffering during the process of the drone 1 driving the telescopic rod 13 to move.

[0038] The present invention provides a telescopic measuring rod for intertidal zone surveying. The specific working principle is as follows: When conducting intertidal zone surveying, first install the accessory box 2 on the unmanned aerial vehicle 1, and then transport the surveying ball 14 provided on the accessory box 2 to the area to be surveyed. Since a counterweight 35 is provided on the surveying ball 14, the surveying ball 14 always fits with the seabed. In this way, the unmanned aerial vehicle 1 actually has the technical effect of dragging the surveying ball 14 on the seabed, greatly reducing the transportation capacity required for the unmanned aerial vehicle 1. During the surveying process, the filter chamber 20, the floating chamber 22, and the sampling chamber 27 are used in cooperation to achieve three different functions: surveying, sampling, and getting rid of entanglement. During surveying, the balance solenoid valve 18 is in the open state, and the internal pressure regulating solenoid valve 17 and the flushing solenoid valve 19 are in the closed state. At this time, water enters the filter chamber 20 and fills the floating chamber 22 above the filter chamber 20 and the piston plate 23. The filter chamber 20 and the floating chamber 22 above the piston plate 23 have the same seawater pressure. However, since the floating chamber 22 below the piston plate 23 is communicated with the sampling chamber 27, and the sampling chamber 27 is communicated with the outside through the sampling channel 30, the entire filter chamber 20, floating chamber 22, and sampling chamber 27 do not act as a float and do not affect the normal surveying of the surveying ball 14. When sampling, when the sampling rod 25 is pushed downward, the air blower and suction pump 36 is in the blowing mode, the flushing solenoid valve 19 is in the closed state, and the internal pressure regulating solenoid valve 17 and the balance solenoid valve 18 are in an alternating intermittent switching state. In this way, when the balance solenoid valve 18 is closed and the internal pressure regulating solenoid valve 17 is opened, the piston plate 23 can be pushed downward by a small distance, and then seawater is filled from the balance solenoid valve 18 by closing the internal pressure regulating solenoid valve 17 and opening the balance solenoid valve 18 to balance the internal and external pressures, and finally the sampling plate 28 is pushed out for sampling. After sampling is completed, the air blower and suction pump 36 switches to the suction mode, and the sampling rod 25 is lifted in the same way. In this way, the sample on the sampling plate 28 will enter the interior of the sampling chamber 27 through the sampling channel 30. Finally, in the sampling chamber 27, the process of lifting and lowering the sampling rod 25 is repeated in the above manner to realize the up and down swing of the sampling rod 25 in the sampling chamber 27, and the sample on the sampling plate 28 is vibrated into the sampling chamber 27 to complete sampling. When the surveying ball 14 is entangled with plants such as seagrass on the seabed, the device needs to be used to get rid of entanglement. The method for getting rid of entanglement is to first make the piston plate 23 rise to the highest position through the operation during sampling, then close the balance solenoid valve 18 and the flushing solenoid valve 19, open the internal pressure regulating solenoid valve 17, and set the air blower and suction pump 36 to the blowing mode to inflate the floating chamber 22 until the piston plate 23 drops to the lowest position. At this time, the internal space of the floating chamber 22 can provide the maximum buoyancy in seawater, driving the telescopic rod 13 and the surveying ball 14 to float up to complete getting rid of entanglement. After getting rid of entanglement, the flushing solenoid valve 19 can be opened again to spray and clean the dirt attached to the outer surface of the surveying ball 14. The present invention uses the unmanned aerial vehicle 1 in cooperation with the telescopic rod 13 to realize the intertidal zone surveying function, and solves the technical problems that the driving bumps during surveying by a surveying vehicle will affect the surveying accuracy and the surveying ability for the deep water area of the intertidal zone is extremely limited.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic measuring rod for intertidal zone surveying and mapping, comprising a drone (1), a fitting box (2) is arranged below the drone (1), a satellite positioning component (4), an inertial navigation component (5), an encoder (6) and a single-beam sounding component (7) are arranged in the fitting box (2), a telescopic rod (13) is arranged below the fitting box (2), a surveying and mapping ball (14) is connected to the bottom of the telescopic rod (13), and a counterweight (35) is arranged on the surveying and mapping ball (14), characterized in that: The drone (1) and the accessory box (2) are detachably installed. A mounting bracket (15) is also fixedly welded to the bottom of the telescopic rod (13). A filter chamber (20) is fixedly welded to the bottom of the mounting bracket (15). A floating chamber (22) is arranged below the filter chamber (20), and a sampling chamber (27) is arranged below the floating chamber (22).

2. The telescopic measuring rod for intertidal zone surveying according to claim 1, characterized in that: A heat dissipation port (3) is also arranged on the accessory box (2).

3. The telescopic measuring rod for intertidal zone surveying according to claim 1 or 2, characterized in that: An internal pressure regulating solenoid valve (17), a balance solenoid valve (18), and a flushing solenoid valve (19) are arranged on the upper end face of the filter chamber (20). The filter chamber (20) communicates with the internal pressure regulating solenoid valve (17), the balance solenoid valve (18), and the flushing solenoid valve (19). One end of the internal pressure regulating solenoid valve (17) also communicates with one end of a hose (32), and the other end of the hose (32) communicates with a two-way air pump (36). One end of the flushing solenoid valve (19) also communicates with one end of a copper pipe (33), and the other end of the copper pipe (33) communicates with a nozzle (34). A filter screen (21) is arranged at the bottom of the internal cavity of the filter chamber (20). The lower part of the filter chamber (20) is welded and connected to the floating chamber (22). A piston plate (23) is arranged in the internal cavity of the floating chamber (22). The piston plate (23) slides up and down on the inner wall of the floating chamber (22). A sampling rod (25) is fixedly welded to the lower end face of the piston plate (23). A connecting flange (26) is arranged at the bottom of the floating chamber (22). A sampling chamber (27) is arranged at the bottom of the connecting flange (26). The floating chamber (22) is detachably connected to the sampling chamber (27) through the connecting flange (26). A sampling channel (30) is arranged in the internal cavity of the sampling chamber (27). The bottom of the sampling rod (25) extends out of the sampling channel (30) and is welded and connected to a sampling plate (28).

4. The telescopic measuring rod for intertidal zone surveying according to claim 3, wherein: A reinforcing rib (16) is fixedly welded to the mounting bracket (15).

5. The telescopic measuring rod for intertidal zone surveying according to claim 3, characterized in that: A sealing plate (24) is welded at the outer edge of the piston plate (23).

6. The telescopic measuring rod for intertidal zone surveying according to claim 3, wherein: A guide plate (29) is welded at the top of the sampling channel (30).

7. The telescopic measuring rod for intertidal zone surveying according to claim 3, characterized in that: An outer attachment plate (8) is bolted to the accessory box (2), and a steering wheel (37) is also welded to the outer attachment plate (8).

8. A telescopic measuring rod for intertidal zone surveying according to claim 7, characterized in that: An installation rod (9) is welded to the bottom of the outer attachment plate (8). An installation sleeve (10) is slidably sleeved on the installation rod (9) left and right. The top of the telescopic rod (13) is fixedly welded to the installation sleeve (10). Baffles (11) are fixedly welded to the left and right ends of the installation sleeve (10). A buffer spring (12) is also sleeved on the installation rod (9).

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