A fully automatic well-type measuring device for measuring ship and measuring method thereof

Abstract

The present invention discloses a fully automatic well-type measuring device for a survey ship and a measuring method thereof, which comprises a measuring well, a guide rail assembly, a lifting winch assembly, a lifting measuring platform, a bottom sealing plate assembly, and an electric control system. The bottom opening of the measuring well is sealed by the unique structure of the sealing plate assembly to prevent the surge formed by the water surface from flowing back into the measuring well, which greatly reduces the wave-making resistance, reduces the energy consumption of the survey ship, and improves the endurance; reduces the uneven force on the ship, alleviates the shaking of the ship, improves the lateral stability and maneuverability of the ship, ensures the safety of navigation, and can also improve the measurement accuracy of the survey ship during navigation. The structure of the lifting shaft outlet of the unique rectangular door matched with the notch sealing plate can still seal the bottom of the measuring well while the lifting measuring platform is performing measurement operations.

Description

Technical Field

[0001] The invention belongs to the field of measuring devices, and is specifically applied to underwater measurement of a measuring ship, in particular to a full-automatic well-type measuring device for a measuring ship. Background Art

[0002] Underwater surveying is a specific type of surveying in engineering surveying. It measures the plane position and elevation of the sea bottom points in rivers, lakes, reservoirs, harbors and offshore waters, and is used for surveying and mapping underwater topographic maps. The main content is to establish a control network on land and conduct underwater topographic surveying and mapping. Underwater topographic surveying and mapping includes sounding point positioning, water depth measurement, water level observation and mapping. The methods for sounding point positioning include cross-section cable method, forward intersection method of theodolite or flat plate instrument, rear intersection method of sextant, polar coordinate method of total station tachometer, radio positioning method, underwater acoustic positioning and differential GPS positioning method. Water depth measurement uses instruments such as sounding rod, sounding hammer and echo sounder. The bottom elevation is calculated based on the results of water depth measurement and water level observation. Finally, isobaths or contour lines are used to represent the bottom terrain.

[0003] Wave-making resistance refers to the resistance caused by gravity waves when a ship is sailing. Its value is related to the length, ship type and navigation mode of the ship, and increases with the speed. The wave-making resistance of a high-speed ship can account for about 50% of the total resistance. One of the main ways to reduce wave-making resistance is to improve the ship type, that is, to minimize the overall wave-making after the superposition of the waves made by various parts of the hull.

[0004] Underwater measurements are generally carried out by survey ships, which are mostly small and medium-sized ships with high speeds. Due to the working mode of the survey ship and the particularity of the measurement environment, it is necessary to make changes to its structure. Some measurement methods will damage the external lines of the hull, resulting in a significant increase in its wave-making resistance. For example, the well-type measurement device disclosed in the prior applications 201710315826.0, 202110044272.1 and 202120059832.6 authorized by the applicant has a measurement well on the survey ship that runs from the deck to the bottom of the ship, and the measurement platform can be raised and lowered in the measurement well. However, the applicant found that it has the following shortcomings in actual underwater measurement work:

[0005] 1. The bottom opening of the measuring well of some small survey ships is generally located near the waterline of the survey ship. This is a gap in the outer plate line of the hull and the outside is connected to the inside of the measuring well. When the survey ship is sailing at high speed, the surge formed on the water surface will flow back into the measuring well, forming a large wave-making resistance, greatly increasing the fuel consumption of the ship and shortening the effective measurement time of the survey ship in a single voyage.

[0006] 2. Since the measuring well is generally set on one side of the hull and not in the center along the keel, when it is subjected to greater wave resistance, the uneven force on the left and right sides of the ship will aggravate the shaking of the ship, reduce the ship's lateral stability and maneuverability, affect navigation safety and the safety of personnel on board, and also cause large errors in the measurement results.

[0007] 3. There are many floating debris on the water surface, which can easily enter the measuring well and interfere with the movement of the lifting structure and measuring device. In serious cases, the lifting structure may be stuck, causing the device to be scrapped, and it is difficult to clean up the debris. Summary of the invention

[0008] In order to solve the above problems, the present invention provides a fully automatic well-type measuring device for a survey ship, which includes a measuring well, a guide rail assembly, a lifting winch assembly, a lifting measuring platform, a bottom sealing plate assembly, and an electric control system. The measuring well is arranged in the hull of the survey ship along a vertical direction from the main deck to the bottom of the ship, a guide rail assembly is arranged inside the measuring well, and the lifting winch assembly drives the lifting measuring platform to perform lifting motion along the guide rail assembly inside the measuring well. A multi-beam underwater transducer and a platform locking device are installed on the lifting and measuring platform. The bottom of the lifting and measuring platform is connected to the multi-beam underwater transducer through a lifting shaft. The platform locking device is used to lock the lifting and measuring platform to the guide rail assembly in the measuring well. A lifting lug is fixedly connected to the upper side of the lifting and measuring platform, and the lifting lug is connected to the lifting winch assembly above the measuring well through a steel cable. The lifting and measuring platform is also provided with a protective drag chain extending from the lifting and measuring platform to the outside of the measuring well. When the lifting and measuring platform is lifted and lowered, the protective drag chain restrains and protects the cables and pipes of the lifting and measuring platform. A drag chain cable guide rack is provided above the measuring well, and the protective drag chain is stored in the drag chain cable guide rack.

[0009] The bottom sealing plate assembly includes two sets of driving assemblies arranged along the vertical direction on the side walls on the opposite sides of the measuring well, and a sealing plate assembly located at the bottom opening of the measuring well. The driving assemblies can jointly drive the sealing plate assembly to open and close. When the sealing plate assembly is in a closed state, the bottom of the measuring well is closed.

[0010] The driving assembly includes a telescopic body, an active telescopic shaft, a universal joint, a passive telescopic shaft, a guide sleeve, and a hinged plate. The telescopic body can be an oil cylinder, an electric cylinder or an air cylinder. The telescopic end of the telescopic body is provided with an active telescopic shaft, which is connected to one end of the passive telescopic shaft through a universal joint. The guide sleeve is slidably connected to the passive telescopic shaft and fixed in the measuring well. The other end of the passive telescopic shaft is provided with a hinged plate, which is hinged to one end of the sealing plate assembly through a hinged connecting rod. When the telescopic end of the telescopic body is extended or retracted, the active telescopic shaft, the universal joint, the passive telescopic shaft, and the hinged plate can be driven to move in turn, thereby driving the sealing plate assembly to open and close. When the multi-beam underwater transducer is lowered to extend out of the bottom of the ship, the sealing plate assembly can also be opened and closed.

[0011] The sealing plate assembly includes two rectangular door panels, and the two rectangular door panels are arranged in a double-door style. One side of the rectangular door panels is hinged to the edge of the opening at the bottom of the measuring well, and the other side is hinged to the driving assembly through a hinged connecting rod; one side where the two rectangular door panels are connected is respectively provided with a lifting shaft notch, and the two lifting shaft notches enclose a lifting shaft outlet, and the size of the lifting shaft outlet matches the lifting shaft. The rectangular door panels are also provided with a notch sealing plate at the lifting shaft notch, and one side of the notch sealing plate is hinged to the rectangular door panel through a torsion spring. The two notch sealing plates are arranged in a double-door style, and the two notch sealing plates can jointly close the lifting shaft outlet, and can be opened downward when one side of the notch sealing plate is squeezed by the lifting shaft.

[0012] The lifting winch assembly, lifting measuring platform, multi-beam underwater transducer, platform locking device, and bottom sealing plate assembly are electrically connected to the electronic control system respectively; the electronic control system is composed of PLC, sensor, control box, control panel, and industrial network equipment to realize various automated operations of the fully automatic well-type measuring device for measuring ships.

[0013] The invention also includes a measuring method of a fully automatic well-type measuring device for a measuring vessel, which comprises the following steps:

[0014] S1, the sealing plate assembly is opened;

[0015] S2, the lifting and measuring platform descends from the recovery height to the measuring height, and the platform locking device locks the lifting and measuring platform;

[0016] S3, the sealing plate assembly is closed;

[0017] S4, multi-beam underwater transducer for underwater measurement;

[0018] S5. After the measurement is completed, open the sealing plate assembly and release the platform locking device;

[0019] S6. The lifting measuring platform rises from the measuring height to the recovery height;

[0020] S7, the sealing plate assembly is closed.

[0021] Among them, S1 specifically controls the driving component to drive the sealing plate component to open through the electronic control system.

[0022] Among them, S2 specifically controls the lifting winch assembly through the electronic control system to lower the lifting and measuring platform to the measuring height, and locks the lifting and measuring platform and the guide rail assembly through the platform locking device.

[0023] Among them, S3 specifically controls the driving component to drive the sealing plate component to close through the electronic control system. At this time, the two rectangular door panels of the sealing plate component are closed, and the lifting shaft gaps of the two rectangular door panels enclose the lifting shaft. The lifting shaft extends from the lifting shaft outlet, and one side of the gap sealing plate is squeezed by the lifting shaft and remains in an open state.

[0024] Among them, S7 specifically controls the driving component to drive the sealing plate component to close through the electronic control system. At this time, the two rectangular door panels of the sealing plate component are closed, and the two notched sealing plates are closed due to the action of the torsion springs, thereby closing the lifting shaft outlet.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The unique structure of the sealing plate assembly can be used to seal the bottom opening of the measuring well to prevent the surge formed on the water surface from flowing back into the measuring well, greatly reducing the wave resistance, reducing the energy consumption of the measuring ship, and improving the endurance.

[0027] 2. Reduce the uneven force on the left and right sides of the ship, reduce the shaking of the ship, improve the ship's lateral stability and maneuverability, ensure navigation safety, and at the same time improve the measurement accuracy of the survey ship during navigation.

[0028] 3. Greatly reduce the probability of floating debris on the water surface entering the measuring well, improve the reliability of the device, reduce fault records, and improve economic efficiency.

[0029] 4. The unique rectangular door structure of the lifting shaft outlet and the notch sealing plate can seal the bottom of the measuring well while the measuring platform is being lifted for measurement, solving the technical pain point of the existing measuring well that cannot take into account both airtightness and measurement. The active telescopic shaft, universal joint, and passive telescopic shaft can prevent the telescopic shaft from bending, deformation, or even breaking, and the guide sleeve ensures the coaxiality of the passive telescopic shaft when lifting.

[0030] 5. The automatic lifting and automatic measurement of the lifting measurement platform and the multi-beam underwater transducer are realized, which improves the measurement efficiency; after the measurement, the multi-beam underwater transducer can be lifted to avoid the accelerated damage of the multi-beam underwater transducer due to long-term immersion in water. During the measurement, the platform locking device rigidly fixes the lifting measurement platform to the guide rail assembly of the measurement well, thereby avoiding the relative displacement between the lifting measurement platform and the hull, which leads to inaccurate measurement results and improves the measurement accuracy.

[0031] The innovative design of the fully automatic well-type measuring device for the survey ship can meet the specifications of major classification societies and conform to the principles of underwater measurement, reducing ship energy consumption and improving navigation safety and measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view of the present invention;

[0033] Figure 2 AA sectional view of the main view of the present invention;

[0034] Figure 3-Figure 5 It is a three-dimensional diagram of the present invention in different states;

[0035] Figure 6-Figure 10 Schematic diagram of the bottom sealing plate assembly of the present invention in different states;

[0036] Fig.11 It is a schematic diagram of a tow chain cable guide of the present invention;

[0037] Fig.12 It is a schematic diagram of the lifting and measuring platform of the present invention;

[0038] Among them: measuring well 1, guide rail assembly 2, lifting winch assembly 3, protective drag chain 31, drag chain cable guide 32, lifting measurement platform 4, multi-beam underwater transducer 41, platform locking device 42, lifting shaft 43, bottom sealing plate assembly 5, sealing plate assembly 51, rectangular door panel 511, notched sealing plate 512, driving assembly 52, telescopic body 521, active telescopic shaft 522, universal joint 523, passive telescopic shaft 524, guide sleeve 525, hinged plate 526, hinged connecting rod 527. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific diagrams. Figures 1 to 12 As shown, the present invention provides a fully automatic well-type measuring device for a survey ship, which includes a measuring well 1, a guide rail assembly 2, a lifting winch assembly 3, a lifting measuring platform 4, a bottom sealing plate assembly 5, and an electric control system. The measuring well 1 is vertically arranged from the main deck to the bottom of the ship and is arranged inside the hull of the survey ship. The guide rail assembly 2 is arranged inside the measuring well 1, and the lifting winch assembly 3 drives the lifting measuring platform 4 to perform lifting motion along the guide rail assembly 2 inside the measuring well 1. A multi-beam underwater transducer 41 and a platform locking device 42 are installed on the lifting and measuring platform 4. The bottom of the lifting and measuring platform 4 is connected to the multi-beam underwater transducer 41 through a lifting shaft 43. The platform locking device 42 is used to lock the lifting and measuring platform 4 to the guide rail assembly 2 in the measuring well 1. A lifting lug is fixedly connected to the upper side of the lifting and measuring platform 4. The lifting lug is connected to the lifting winch assembly 3 above the measuring well 1 through a steel cable. The lifting and measuring platform 4 is also provided with a protective drag chain 31 extending from the lifting and measuring platform 4 to the outside of the measuring well 1. When the lifting and measuring platform 4 is lifting and lowering, the protective drag chain 31 constrains and protects the cables and pipes of the lifting and measuring platform 4. A drag chain cable guide 32 is provided above the measuring well, and the protective drag chain 31 is stored in the drag chain cable guide 32.

[0040] See also Figures 6 to 10 The bottom sealing plate assembly 5 includes two sets of driving assemblies 52 arranged in the vertical direction on the side walls on the opposite sides of the measuring well 1 and a sealing plate assembly 51 located at the bottom opening of the measuring well. The driving assemblies 52 can jointly drive the sealing plate assembly 51 to open and close. When the sealing plate assembly 51 is in a closed state, the bottom of the measuring well 1 is closed; and when the multi-beam underwater transducer 41 descends to extend out of the bottom of the ship, the sealing plate assembly can also be opened and closed.

[0041] The driving assembly 52 includes a telescopic body 521, an active telescopic shaft 522, a universal joint 523, a passive telescopic shaft 524, a guide sleeve 525, and a hinged plate 526. The telescopic body 521 can be an oil cylinder, an electric cylinder or a pneumatic cylinder. The telescopic end of the telescopic body 521 is provided with an active telescopic shaft 522, which is connected to one end of the passive telescopic shaft 524 through a universal joint 523. The guide sleeve 525 is slidably connected to the passive telescopic shaft 524 and fixed in the measuring well 1. The other end of the passive telescopic shaft 524 is provided with a hinged plate 526, which is hinged to one end of the sealing plate assembly 51 through a hinged connecting rod 527. When the telescopic end of the telescopic body 521 is extended, it can drive the active telescopic shaft 522, the universal joint 523, the passive telescopic shaft 524, and the hinged plate 526 to move downward in sequence, thereby driving the sealing plate assembly 51 to open. Since the overall length of the measuring well is relatively high, the cooperation of the active telescopic shaft 522, the universal joint 523, the passive telescopic shaft 524, and the guide sleeve 525 has a higher degree of freedom than the solution of directly connecting the telescopic body and the hinge plate with only one telescopic shaft, and can realize variable-angle power transmission, which can effectively avoid the risk of bending deformation or even fracture of the telescopic shaft when the telescopic body drives the telescopic shaft to extend and retract when the hull is slightly deformed or the telescopic body is not coaxially aligned with the telescopic shaft, thereby improving its reliability; the guide sleeve is then used to ensure the coaxiality of the passive telescopic shaft, so that the sealing plate assembly 51 can be opened and closed smoothly. Among them, the universal joint can be a cross-axis universal joint.

[0042] The sealing plate assembly 51 includes two rectangular door panels 511, and the two rectangular door panels 511 are arranged in a double-door style. One side of the rectangular door panels 511 is hinged to the edge of the bottom opening of the measuring well 1, and the other side is hinged to the driving assembly 52 through a hinged connecting rod 527; the two sides where the two rectangular door panels 511 are connected are respectively provided with lifting shaft notches, and the two lifting shaft notches together form a lifting shaft outlet, and the size of the lifting shaft outlet matches the lifting shaft 43. The rectangular door panels 511 are also respectively provided with notch sealing plates 512 at the lifting shaft notches, and one side of the notch sealing plates 512 is hinged to the rectangular door panels 511 through a torsion spring. The two notch sealing plates 512 are arranged in a double-door style, and the two notch sealing plates 512 can jointly close the lifting shaft outlet, and can be opened downward when one side of the notch sealing plate 512 is squeezed by the lifting shaft 43.

[0043] The lifting winch assembly 3, the lifting measuring platform 4, the multi-beam underwater transducer 41, the platform locking device 42, and the bottom sealing plate assembly 5 are electrically connected to the electronic control system respectively; the electronic control system is composed of PLC, sensors, control boxes, control panels, and industrial network equipment to realize various automated operations of the fully automatic well-type measuring device for measuring ships.

[0044] The invention also includes a measuring method of a fully automatic well-type measuring device for a measuring vessel, which comprises the following steps:

[0045] S1, the sealing plate assembly 51 is opened;

[0046] S2, the lifting and measuring platform 4 is lowered from the recovery height to the measuring height, and the platform locking device 42 locks the lifting and measuring platform 4;

[0047] S3, closing the sealing plate assembly 51;

[0048] S4, the multi-beam underwater transducer 41 performs underwater measurement;

[0049] S5. After the measurement is completed, the sealing plate assembly 51 is opened and the platform locking device 42 is unlocked;

[0050] S6, the lifting and measuring platform 4 rises from the measuring height to the recovery height;

[0051] S7. The sealing plate assembly 51 is closed.

[0052] Specifically, S1 is to control the driving component 52 through the electronic control system to drive the sealing plate component 51 to open.

[0053] Among them, S2 specifically controls the lifting winch assembly 3 through the electronic control system to lower the lifting and measuring platform 4 to the measuring height, and locks the lifting and measuring platform 4 and the guide rail assembly 2 through the platform locking device 42.

[0054] Among them, S3 specifically controls the driving component 52 through the electronic control system to drive the sealing plate component 51 to close. At this time, the two rectangular door panels of the sealing plate component 51 are closed, and the lifting shaft gaps of the two rectangular door panels enclose the lifting shaft 43. The lifting shaft 43 extends from the lifting shaft outlet, and one side of the gap sealing plate is squeezed by the lifting shaft 43 and remains in an open state.

[0055] Among them, S7 specifically controls the driving component to drive the sealing plate component 51 to close through the electronic control system. At this time, the two rectangular door panels of the sealing plate component 51 are closed, and the two notched sealing plates are closed due to the action of the torsion spring, thereby closing the outlet of the lifting shaft 43.

[0056] In actual use, the present invention can achieve the following technical effects:

[0057] This ship-borne fully automatic measuring device realizes the automatic lifting and automatic measurement of the lifting measuring platform and the multi-beam underwater transducer, and improves the measurement efficiency. After the measurement, the multi-beam underwater transducer can be lifted to prevent the multi-beam underwater transducer from being damaged faster due to long-term immersion in water. During the measurement, the platform locking device rigidly fixes the lifting measuring platform on the guide rail assembly of the measuring well, thereby avoiding the relative displacement between the lifting measuring platform and the hull, which leads to inaccurate measurement results and improves the measurement accuracy. The bottom opening of the measuring well can be closed by the unique structure of the sealing plate assembly to prevent the surge formed on the water surface from flowing back into the measuring well, greatly reducing the wave resistance, reducing the energy consumption of the measuring ship, and improving the endurance. Reduce the uneven force on the left and right sides of the ship, reduce the shaking of the ship, improve the ship's transverse stability and maneuverability, ensure navigation safety, and at the same time improve the measurement accuracy of the measuring ship during navigation. Greatly reduce the probability of floating debris on the water surface entering the measuring well, improve the reliability of the device, reduce fault records, and improve economic efficiency. The unique rectangular door structure that matches the lifting shaft outlet with the notch sealing plate can seal the bottom of the measuring well while the lifting measuring platform is performing measuring operations, solving the technical pain points of measuring wells in the prior art.

[0058] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fully automatic well-type measuring device for a survey ship, comprising a measuring well, a guide rail assembly, a lifting winch assembly, a lifting measuring platform, a bottom sealing plate assembly, and an electric control system; wherein the measuring well is arranged in the hull of the survey ship from the main deck to the bottom of the ship in the vertical direction, a guide rail assembly is arranged inside the measuring well, the lifting winch assembly drives the lifting measuring platform to perform lifting movement along the guide rail assembly inside the measuring well, a multi-beam underwater transducer and a platform locking device are installed on the lifting measuring platform, the bottom of the lifting measuring platform is connected to the multi-beam underwater transducer through a lifting shaft, and the platform locking device is used to lock the lifting measuring platform to the guide rail assembly in the measuring well; it is characterized in that: The bottom sealing plate assembly includes a driving assembly arranged in the vertical direction inside the measuring well and a sealing plate assembly located at the bottom opening of the measuring well, the driving assembly can drive the sealing plate assembly to open and close, and when the multi-beam underwater transducer descends to extend out of the bottom of the ship, the sealing plate assembly can also be opened and closed; the lifting winch assembly, the lifting measuring platform, the multi-beam underwater transducer, the platform locking device, and the bottom sealing plate assembly are electrically connected to the electronic control system respectively; the driving assembly includes a telescopic body, an active telescopic shaft, a universal joint, a passive telescopic shaft, a guide sleeve, and a hinged plate. The telescopic end of the telescopic body is provided with an active telescopic shaft, the active telescopic shaft is connected to one end of the passive telescopic shaft through a universal joint, the guide sleeve is slidably connected to the passive telescopic shaft and fixed in the measuring well, and the passive telescopic shaft is A hinged plate is provided at the other end, and the hinged plate is hinged to one end of the sealing plate assembly through a hinged connecting rod; the sealing plate assembly includes two rectangular door panels, and the two rectangular door panels are arranged in a double-door style, one side of the rectangular door panels is hinged to the edge of the opening at the bottom of the measuring well, and the other side is hinged to the driving assembly through a hinged connecting rod; the two rectangular door panels are connected on one side and are respectively provided with lifting shaft notches, and the two lifting shaft notches enclose a lifting shaft outlet, and the size of the lifting shaft outlet matches the lifting shaft, and the rectangular door panels are also provided with notch sealing plates at the lifting shaft notches, and one side of the notch sealing plates is hinged to the rectangular door panels through a torsion spring, and the two notch sealing plates are arranged in a double-door style, and the two notch sealing plates can jointly close the lifting shaft outlet, and can be opened downward when one side of the notch sealing plate is squeezed by the lifting shaft.

2. The fully automatic well-type measuring device for a survey ship according to claim 1 is characterized in that: A lifting lug is fixedly connected to the upper side of the lifting and measuring platform, and the lifting lug is connected to the lifting winch assembly above the measuring well through a steel cable. The lifting and measuring platform is also provided with a protective drag chain extending from the lifting and measuring platform to the outside of the measuring well. When the lifting and measuring platform is lifted or lowered, the protective drag chain restrains and protects the cables and pipes of the lifting and measuring platform. A drag chain cable guide is provided above the measuring well, and the protective drag chain is stored in the drag chain cable guide.

3. The fully automatic well-type measuring device for a survey ship according to claim 1 is characterized in that: The telescopic body is an oil cylinder, an electric cylinder or a pneumatic cylinder.

4. The fully automatic well-type measuring device for a survey ship according to claim 1, characterized in that: The electronic control system includes PLC, sensors, control boxes, control panels, and industrial network equipment.

5. A survey ship, characterized in that: It comprises a fully automatic well-type measuring device for a measuring vessel as claimed in any one of claims 1 to 4.

6. A measurement method using the fully automatic well-type measurement device for a survey ship as claimed in claim 1, characterized in that: It has the following steps: S1, the sealing plate assembly is opened; S2, the lifting and measuring platform descends from the recovery height to the measuring height, and the platform locking device locks the lifting and measuring platform; S3, the sealing plate assembly is closed; S4, multi-beam underwater transducer for underwater measurement; S5. After the measurement is completed, open the sealing plate assembly and release the platform locking device; S6. The lifting measuring platform rises from the measuring height to the recovery height; S7, the sealing plate assembly is closed.

7. The measuring method according to claim 5, characterized in that: Furthermore, S1 specifically controls the driving assembly through the electronic control system to drive the sealing plate assembly to open; S2 specifically controls the lifting winch assembly through the electronic control system to lower the lifting and measuring platform to the measuring height, and locks the lifting and measuring platform and the guide rail assembly through the platform locking device.

8. The measuring method according to claim 7, characterized in that: Further, S3 specifically controls the driving component through the electronic control system to drive the sealing plate assembly to close. At this time, the two rectangular door panels of the sealing plate assembly are closed, and the lifting shaft notches of the two rectangular door panels enclose the lifting shaft. The lifting shaft extends from the lifting shaft outlet, and one side of the notched sealing plate is squeezed by the lifting shaft and remains in an open state; S7 specifically controls the driving component through the electronic control system to drive the sealing plate assembly to close. At this time, the two rectangular door panels of the sealing plate assembly are closed, and the two notched sealing plates are in a closed state due to the action of the torsion springs, thereby closing the lifting shaft outlet.

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