CN114370912A

CN114370912A - Water level measuring device for building engineering investigation

Info

Publication number: CN114370912A
Application number: CN202210019098.XA
Authority: CN
Inventors: 陈国辉
Original assignee: Hunan Fujincheng Construction Engineering Management Co ltd
Current assignee: Hunan Fujincheng Construction Engineering Management Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-04-19

Abstract

The invention discloses a water level measuring device for building engineering investigation, which relates to the technical field of building engineering, and comprises a box body, a first air bag, a connecting fixing plate, a second air bag and a double-arc-opening connecting block, wherein the first air bag is arranged at the lower end of the outer surface of the box body, and the connecting fixing plate is fixedly connected with the outer surface of the first air bag, the effect of rapid measurement is achieved.

Description

Water level measuring device for building engineering investigation

Technical Field

The invention belongs to the technical field of constructional engineering, and particularly relates to a water level measuring device for constructional engineering investigation.

Background

The building engineering refers to an engineering entity formed by the construction of various house buildings and auxiliary facilities thereof and the installation activities of lines, pipelines and equipment matched with the house buildings;

when carrying out construction work on the surface of water, need measure the degree of depth of water earlier, then carry out construction work, but when carrying out water level measurement at present, the measuring device of general adoption can be along with the decurrent deepening, can't fine feedback to still receive the water pressure influence to a certain extent, and then lead to measured data inaccurate, for this reason we have provided a water level measuring device for building engineering reconnaissance.

Disclosure of Invention

The invention aims to provide a water level measuring device for constructional engineering investigation, which solves the existing problems through a connecting component.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a water level measuring device for building engineering investigation, which comprises a box body, a first air bag, a connecting fixing plate, a second air bag and a double-arc-opening connecting block, wherein the first air bag is arranged at the lower end of the outer surface of the box body;

the box includes fixed block one, connecting block one, ejector pin, scale, gravity subassembly and coupling assembling, fixed block one sets up in the box inner wall bottom, a connecting block fixed connection is in a fixed block left and right sides, ejector pin fixed connection is at a fixed block top, the scale sets up at the ejector pin surface, the gravity subassembly sets up in the inside left and right sides of box, and two are that one side that the gravity subassembly is close to each other is provided with coupling assembling.

Furthermore, one end, far away from the first air bag, of the connecting and fixing plate is fixedly connected with the outer surface of the box body, the number of the connecting and fixing plate and the number of the double-arc-opening connecting blocks are four, and the inner surfaces of the arc-shaped openings in the double-arc-opening connecting blocks are in mutual contact with the outer surfaces of the first air bag and the second air bag;

the size of the second air bag and the air storage amount are larger than those of the first air bag, and the first air bag and the second air bag are both circular rings.

Further, the connecting component comprises a fixed rod, a connecting rod, a square plate, a T-shaped block, a cylindrical rod, a clamping plate, a clamping block, a long rod and a limiting rod, the fixed rod is fixedly connected inside the box body, the connecting rod is rotatably connected on the outer surface of the fixed rod, the square plates are fixedly connected with the upper end and the lower end of the connecting rod, a T-shaped block is arranged on one side of each square plate far away from each other, the cylindrical rod is arranged at one side of the square plate, which is close to the T-shaped block, the clamping plate is arranged at the upper end and the lower end of one side of the square plate, which is far away from the T-shaped block, one side of the T-shaped block, which is close to the square plate, is provided with a notch I, the clamping blocks are connected inside the notch I in a sliding manner, one side of each clamping block, which is far away from each other, is fixedly connected with a long rod, a second notch is formed in one side, far away from the two square plates, of the connecting rod, and a limiting rod is fixedly connected to the inner wall of one side, close to the two notches, of the two notches;

the long rod positioned at the lower end is rotationally connected with the first connecting block through a rotating shaft.

Furthermore, the number of the cylindrical rods is two, the upper ends and the lower ends of the two cylindrical rods respectively penetrate through the square plate and the T-shaped block and are fixedly connected with the clamping plate, the outer surface of each cylindrical rod is sleeved with a first spring, and the upper end and the lower end of each first spring are fixedly connected with the T-shaped block and the square plate;

the T-shaped block, the cylindrical rod and the square plate are rotatably connected with the fixed rod through the connecting rod.

Furthermore, one end of the long rod, which is close to the T-shaped block, is provided with a notch III, the bottom of the limiting rod, which is positioned at the lower end, penetrates through the fixture block and extends into the notch III, and the limiting rod is connected in the notch III in a sliding manner;

and the outer surface of the limiting rod is sleeved with a second spring, and the upper end and the lower end of the second spring are fixedly connected with the fixture block and the inner wall of the second notch.

Further, the gravity assembly comprises a cylindrical block, a gravity block, a threaded rod, a circular clamping plate, a handle, a threaded block, a second fixed block and a fourth connecting block, the gravity block is fixedly installed inside the cylindrical block, the threaded rod is fixedly connected to the top of the cylindrical block, the circular clamping plate is arranged at the top of the box body, the handle is fixedly installed at the top of the circular clamping plate, the threaded block is fixedly connected to the bottom of the circular clamping plate, the two fixed blocks are fixedly connected to the outer surface of the cylindrical block, and the four connecting blocks are fixedly connected to the left side of the second fixed block.

Furthermore, round holes I are formed in the top and the bottom of the box body, the thread block is connected inside the round holes I in a sliding mode, the thread block is connected with the threaded rod in a threaded mode, and the bottom of the circular clamping plate is in contact with the top of the box body;

and the fourth connecting block is rotationally connected with the long rod positioned at the upper end through a rotating shaft.

Furthermore, a first sealing ring is fixedly mounted on the inner wall of the first round hole at the bottom, the bottom of the cylindrical block penetrates through the first sealing ring and extends to the outside, a second round hole is formed in the middle shaft of the top of the box body, a second sealing ring is fixedly mounted inside the second round hole, and the bottom of the ejector rod penetrates through the second sealing ring and extends to the outside.

The invention has the following beneficial effects:

according to the invention, through the connecting component, when the gravity component moves downwards, the ejector rod can move upwards, the gravity component moves downwards by a certain amount, the ejector rod can move upwards, the accuracy of measurement data is increased to a certain extent, and similarly, when the ejector rod moves downwards, the gravity component can be retracted into the box body again under the influence of the connecting component, the extending distance of the long rod can be limited through the clamping block, and when the external pressure shrinks inwards, the spring can be extruded, and the stressed spring can accelerate the conversion speed of the connecting component through the self elasticity when the stress is small, so that the effect of rapid measurement can be achieved.

According to the invention, through the gravity assembly, when the limit of the thread block is lost, the thread block can be quickly moved into water due to the influence of the internal gravity block, so that the effect of measuring the water depth is achieved, the situation that water enters the box body and further influences a measuring result can be avoided through the first sealing ring, the weight of the cylindrical block can be increased through the gravity block, and the phenomenon that the measured data is inaccurate due to the influence of the water pressure in the water on the cylindrical block along with the different extending depths of the cylindrical block is avoided.

According to the invention, the threaded rod and the threaded block are matched with each other, the cylindrical block is limited and fixed in the box body when the device is not used, the cylindrical block is exposed outside for a long time, the cylindrical block is inconvenient to use, and the cylindrical block is possibly damaged due to more external uncertain factors.

The invention achieves the effect that the box body can float on the water surface to be measured through the first air bag and the second air bag, achieves the effects of ensuring the distance between the first air bag and the second air bag and increasing the connection and fixing effects through the double-arc-port connecting block, can fix the first air bag through connecting the fixing plate, and then indirectly achieves the fixing effect on the second air bag through the double-arc-port connecting block.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the case of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is an enlarged view of a portion B of FIG. 2 according to the present invention;

FIG. 5 is an enlarged view of a portion of C in FIG. 2 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a box body; 11. a first fixed block; 12. a first connecting block; 13. a top rod; 14. calibration; 16. a gravity assembly; 161. a cylindrical block; 162. a gravity block; 163. a threaded rod; 164. a circular clamping plate; 165. a handle; 166. a thread block; 167. a second fixed block; 168. connecting blocks IV; 17. a connecting assembly; 171. fixing the rod; 172. a connecting rod; 173. a square plate; 174. a T-shaped block; 175. a cylindrical rod; 176. clamping a plate; 177. a clamping block; 178. a long rod; 179. a limiting rod; 2. a first air bag; 3. connecting the fixed plate; 4. a second air bag; 5. double-arc mouth connecting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1-5, the invention relates to a water level measuring device for building engineering investigation, which comprises a box body 1, a first air bag 2, a connecting fixing plate 3, a second air bag 4 and a double-arc-port connecting block 5, wherein the first air bag 2 is arranged at the lower end of the outer surface of the box body 1, the connecting fixing plate 3 is fixedly connected to the outer surface of the first air bag 2, the second air bag 4 is arranged at the outer side of the first air bag 2, and the double-arc-port connecting block 5 is fixedly connected to the outer surfaces of the first air bag 2 and the second air bag 4;

box 1 includes fixed block 11, connecting block 12, ejector pin 13, scale 14, gravity subassembly 16 and coupling assembling 17, fixed block 11 sets up in 1 inner wall bottom of box, connecting block 12 fixed connection is in 11 left and right sides of fixed block, ejector pin 13 fixed connection is at 11 tops of fixed block, scale 14 sets up at ejector pin 13 surface, gravity subassembly 16 sets up in 1 inside left and right sides of box, two are that one side that gravity subassembly 16 is close to each other is provided with coupling assembling 17, through connecting fixed plate 3, can fix gasbag 2, reach the fixed action to gasbag two 4 through 5 indirectnesses of two arc mouth connecting blocks afterwards.

One end, far away from the first air bag 2, of the connecting and fixing plate 3 is fixedly connected with the outer surface of the box body 1, the number of the connecting and fixing plate 3 and the number of the double-arc-opening connecting blocks 5 are four, and the inner surfaces of the arc-shaped openings in the double-arc-opening connecting blocks 5 are in mutual contact with the outer surfaces of the first air bag 2 and the second air bag 4;

the shape and size of the second 4 air bags and the air storage amount are larger than the first 2 air bags, the first 2 air bags and the second 4 air bags are circular, the effect that the box body 1 can float on the water surface to be measured is achieved through the first 2 air bags and the second 4 air bags, and the double-arc-mouth connecting block 5 achieves the effects of guaranteeing the distance between the first 2 air bags and the second 4 air bags and increasing the connecting and fixing effects.

The connecting component 17 comprises a fixing rod 171, a connecting rod 172, square plates 173, T-shaped blocks 174, a cylindrical rod 175, a clamping plate 176, clamping blocks 177, a long rod 178 and a limiting rod 179, the fixing rod 171 is fixedly connected inside the box body 1, the connecting rod 172 is rotatably connected on the outer surface of the fixing rod 171, the square plates 173 are fixedly connected at the upper end and the lower end of the connecting rod 172, the T-shaped blocks 174 are arranged at the sides, far away from each other, of the two square plates 173, the cylindrical rod 175 is arranged at the side, near to the T-shaped blocks 174, of the square plates 173, the clamping plate 176 is arranged at the upper end and the lower end of the side, far away from the square plates 173 and the T-shaped blocks 174, one side, near the square plates 173, is provided with a notch I, the clamping blocks 177 are slidably connected inside the notch I, the long rod 178 is fixedly connected at the side, far away from the connecting rod 172 and the two square plates 173, is provided with a notch II, the inner wall of the side, near the two notches are fixedly connected with the limiting rod 179, through the connecting component 17, when the gravity component 16 moves downwards, the ejector rod 13 moves upwards, and by the amount that the gravity component 16 moves downwards, the ejector rod 13 moves upwards, so that the accuracy of the measured data is increased to a certain extent, and similarly, when the ejector rod 13 moves downwards, the gravity component 16 is retracted into the box body 1 again under the influence of the connecting component 17;

the long rod 178 at the lower end is rotatably connected with the first connecting block 12 through a rotating shaft.

The number of the cylindrical rods 175 is two, the upper ends and the lower ends of the two cylindrical rods 175 respectively penetrate through the square plate 173 and the T-shaped block 174 to be fixedly connected with the clamping plate 176, the outer surface of each cylindrical rod 175 is sleeved with a first spring, and the upper end and the lower end of each first spring are fixedly connected with the T-shaped block 174 and the square plate 173;

the T-block 174, the cylindrical rod 175 and the square plate 173 are rotatably connected to the fixing rod 171 by the connecting rod 172.

One end of the long rod 178 close to the T-shaped block 174 is provided with a notch III, the bottom of the lower end limiting rod 179 penetrates through the fixture block 177 and extends into the notch III, the limiting rod 179 is connected in the notch III in a sliding mode, the extending distance of the long rod 178 can be limited through the fixture block 177, the spring can be extruded when external pressure shrinks towards the inside, the stressed spring can accelerate the conversion speed of the connecting assembly 17 through the elasticity of the stressed spring when the stress is small, and the effect of rapid measurement is achieved;

and a second spring is sleeved on the outer surface of the limit rod 179, and the upper end and the lower end of the second spring are fixedly connected with the fixture block 177 and the inner wall of the second notch.

The gravity assembly 16 comprises a cylindrical block 161, a gravity block 162, a threaded rod 163, a circular clamping plate 164, a handle 165, a threaded block 166, a second fixed block 167 and a fourth connecting block 168, the gravity block 162 is fixedly installed inside the cylindrical block 161, the weight of the cylindrical block 161 can be increased through the gravity block 162, the phenomenon that the cylindrical block 161 is influenced by water pressure in water due to different extending depths of the cylindrical block 161 is avoided, and accordingly inaccurate measured data occurs, the threaded rod 163 is fixedly connected to the top of the cylindrical block 161, the circular clamping plate 164 is arranged at the top of the box body 1, the handle 165 is fixedly installed at the top of the circular clamping plate 164, through the handle 165, a worker can conveniently rotate the circular clamping plate 164 and the threaded block 166, the disassembling speed and the disassembling efficiency are increased to a certain extent, through the scales 14, the descending depth of the cylindrical block 161 can be accurately displayed on the ejector rod 13, and the worker can conveniently observe and record, screw block 166 fixed connection is when circular cardboard 164 bottom, fixed block two 167 fixed connection is at the 161 surface of cylinder, and four 168 fixed connection of connecting block are on the left of fixed block two 167, through gravity subassembly 16, when losing screw block 166's restriction, can be because the influence quick travel of inside gravity piece 162 goes to the aquatic, and then reaches and carries out measuring effect to the depth of water, and through sealing washer one, can avoid having water to enter into in the box 1 and then influence the condition emergence of measuring result.

The top and the bottom of the box body 1 are provided with first round holes, the thread block 166 is slidably connected inside the first round holes, the thread block 166 is in threaded connection with the threaded rod 163, and the threaded rod 163 and the thread block 166 are matched with each other, so that the cylindrical block 161 is limited and fixed in the box body 1 when the device is not used, and the cylindrical block 161 is exposed outside for a long time, so that the cylindrical block 161 is inconvenient to use, and the bottom of the circular clamping plate 164 is in contact with the top of the box body 1 due to more external uncertain factors and possible damage to the cylindrical block 161;

the fourth connecting block 168 is rotatably connected with the long rod 178 at the upper end through a rotating shaft.

The inner wall of the round hole I at the bottom is fixedly provided with a first sealing ring, the bottom of the cylindrical block 161 is penetrated through the first sealing ring and extends to the outside, a round hole II is formed in the middle shaft at the top of the box body 1, a second sealing ring is fixedly arranged in the round hole II, and the bottom of the ejector rod 13 is penetrated through the second sealing ring and extends to the outside.

One specific application of this embodiment is: the box body 1 is placed on a water surface to be measured, the first air bag 2 and the second air bag 4 can support the box body 1 to float on the water surface, at the moment, the circular clamping plate 164 is rotated through the handle 165, the thread block 166 rotates along with the circular clamping plate 164, until the thread block 166 is pulled out of the threaded rod 163, the top of the cylindrical block 161 loses the fixation of the thread block 166, and then the thread block is influenced by gravity to move downwards, the second fixing block 167 is influenced by the cylindrical block 161 to move downwards and simultaneously drive the long rod 178 at the top through the fourth connecting block 168, the connecting rod 172 is also influenced by the top long rod 178 when the long rod 178 is stressed, as the connecting component 17 is limited by the fixing rod 171, the long rod 178 at the bottom can be influenced simultaneously and drive the first fixing block 11 and the ejector rod 13 to move upwards through the first connecting block 12, at the moment, the long rod 178 can drive the fixture block 177 to move towards the inner part of the second notch along with the limiting rod 179 and extrude the second spring, when the long rod 178 completely enters the second notch, the two T-shaped blocks 174 are in contact with the outer surfaces of the ejector rod 13 and the cylindrical block 161 respectively, the outer sides of the two T-shaped blocks 174 are extruded to move inwards along the cylindrical rod 175 and extrude the first spring, then transposition is completed, the long rod 178 at the lower end drives the ejector rod 13 to move upwards, so that the depth of water can be known through the scales 14 on the outer surface of the ejector rod 13, when the device needs to be retracted, the device is taken out of the water and is lightly placed on the ground, then the box body 1 is pressed down, the extended cylindrical block 161 can be retracted into the box body 1, at the moment, the threaded block 166 is rotated back, and the effect of limiting the cylindrical block 161 is achieved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a water level measuring device is used in building engineering reconnaissance, includes box (1), gasbag (2), connection fixed plate (3), gasbag two (4) and two arc mouth connecting blocks (5), its characterized in that: the first air bag (2) is arranged at the lower end of the outer surface of the box body (1), the connecting and fixing plate (3) is fixedly connected to the outer surface of the first air bag (2), the second air bag (4) is arranged on the outer side of the first air bag (2), and the double-arc-shaped connecting block (5) is fixedly connected to the outer surfaces of the first air bag (2) and the second air bag (4);

box (1) is including fixed block (11), connecting block (12), ejector pin (13), scale (14), gravity subassembly (16) and coupling assembling (17), fixed block (11) set up in box (1) inner wall bottom, connecting block (12) fixed connection is in fixed block (11) left and right sides, ejector pin (13) fixed connection is at fixed block (11) top, scale (14) set up at ejector pin (13) surface, gravity subassembly (16) set up in the inside left and right sides of box (1), and two are that one side that gravity subassembly (16) are close to each other is provided with coupling assembling (17).

2. The water level measuring device for the constructional engineering investigation as recited in claim 1, wherein one end of said connecting fixing plate (3) far from said first air bag (2) is fixedly connected with the outer surface of said tank body (1), said connecting fixing plate (3) and said double-arc-mouth connecting block (5) are four in number, and the inner surface of the arc-shaped mouth inside said double-arc-mouth connecting block (5) is contacted with the outer surfaces of said first air bag (2) and said second air bag (4);

the shape and size of the second air bag (4) and the air storage amount are larger than those of the first air bag (2), and the first air bag (2) and the second air bag (4) are both circular rings.

3. The water level measuring device for the constructional engineering investigation of claim 1, wherein the connecting assembly (17) comprises a fixing rod (171), a connecting rod (172), square plates (173), T-shaped blocks (174), a cylindrical rod (175), a clamping plate (176), a clamping block (177), a long rod (178) and a limiting rod (179), the fixing rod (171) is fixedly connected inside the box body (1), the connecting rod (172) is rotatably connected to the outer surface of the fixing rod (171), the square plates (173) are fixedly connected to the upper end and the lower end of the connecting rod (172), the T-shaped blocks (174) are arranged on the sides of the two square plates (173) far away from each other, the cylindrical rod (175) is arranged on the side of the square plates (173) close to the T-shaped blocks (174), the clamping plate (176) is arranged on the upper end and the lower end of the side of the square plates (173) far away from the T-shaped blocks (174), one side, close to the square plate (173), of the T-shaped block (174) is provided with a first notch, the fixture blocks (177) are connected inside the first notch in a sliding mode, one side, far away from each other, of each of the two fixture blocks (177) is fixedly connected with a long rod (178), one side, far away from each other, of each of the connecting rod (172) and the two square plates (173) is provided with a second notch, and the inner wall, close to each other, of one side of each of the two notches is fixedly connected with a limiting rod (179);

the long rod (178) positioned at the lower end is rotationally connected with the first connecting block (12) through a rotating shaft.

4. The water level measuring device for the constructional engineering investigation of claim 3, wherein the number of the cylindrical rods (175) is two, the upper and lower ends of the two cylindrical rods (175) respectively penetrate through the square plate (173) and the T-shaped block (174) to be fixedly connected with the clamping plate (176), the outer surface of the cylindrical rod (175) is sleeved with a first spring, and the upper and lower ends of the first spring are fixedly connected with the T-shaped block (174) and the square plate (173);

the T-shaped block (174), the cylindrical rod (175) and the square plate (173) are rotatably connected with the fixing rod (171) through a connecting rod (172).

5. The water level measuring device for the constructional engineering investigation of claim 4, wherein one end of the long rod (178) close to the T-shaped block (174) is provided with a notch III, the bottom of the limit rod (179) at the lower end penetrates through the fixture block (177) and extends to the inside of the notch III, and the limit rod (179) is connected to the inside of the notch III in a sliding manner;

and a second spring is sleeved on the outer surface of the limiting rod (179), and the upper end and the lower end of the second spring are fixedly connected with the fixture block (177) and the inner wall of the second notch.

6. The water level measuring apparatus for architectural engineering investigation of claim 1, the gravity component (16) comprises a cylindrical block (161), a gravity block (162), a threaded rod (163), a circular clamping plate (164), a handle (165), a threaded block (166), a fixed block II (167) and a connecting block IV (168), the gravity block (162) is fixedly arranged in the cylindrical block (161), the threaded rod (163) is fixedly connected to the top of the cylindrical block (161), the circular clamping plate (164) is arranged at the top of the box body (1), the handle (165) is fixedly arranged at the top of the circular clamping plate (164), when the threaded block (166) is fixedly connected to the bottom of the circular clamping plate (164), the second fixed block (167) is fixedly connected to the outer surface of the cylindrical block (161), and the fourth connecting block (168) is fixedly connected to the left side of the second fixing block (167).

7. The water level measuring device for the constructional engineering investigation as recited in claim 6, wherein the top and the bottom of the box body (1) are provided with a first circular hole, the screw block (166) is slidably connected inside the first circular hole, the screw block (166) is in threaded connection with the threaded rod (163), and the bottom of the circular clamping plate (164) is in contact with the top of the box body (1);

the fourth connecting block (168) is rotationally connected with a long rod (178) positioned at the upper end through a rotating shaft.

8. The water level measuring device for the constructional engineering investigation of claim 7, wherein a first sealing ring is fixedly arranged on the inner wall of the first round hole at the bottom, the bottom of the cylindrical block (161) penetrates through the sealing ring and extends to the outside, a second round hole is arranged at the central axis of the top of the box body (1), a second sealing ring is fixedly arranged in the second round hole, and the bottom of the ejector rod (13) penetrates through the second sealing ring and extends to the outside.