Hydrology and water resource telescopic measuring rod

Abstract

The utility model relates to the technical field of hydrology and water resource exploration, in particular to a hydrology and water resource telescopic measuring rod which comprises a telescopic depth measuring rod and a containing rod capable of containing the telescopic depth measuring rod, the telescopic depth measuring rod comprises a main measuring rod, a first extension rod and a second extension rod, and the main measuring rod and the first extension rod are both tubular rods. The upper end of the main measuring rod is hinged to the connecting end of the storage rod, the first extension rod slides in the main measuring rod, the second extension rod slides in the first extension rod, a lower rod body of the main measuring rod is provided with a first pressing and fixing assembly capable of fixing the first extension rod, and a lower rod body of the first extension rod is provided with a second pressing and fixing assembly capable of fixing the second extension rod. The problem that operation is tedious when a measuring rod and a first extension measuring rod and the first extension measuring rod and a second extension measuring rod are fixed in an existing telescopic measuring device is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrology water resource survey technical field, concretely is a hydrology water resource telescopic measuring rod. BACKGROUND

[0002] Hydrology water resource engineering is to take water resources as the main research object, systematically studies the distribution, formation, evolution etc. of water resources, and carries out the collection and processing of water resources information, the planning and development of water resources, and hydrology water resource engineering is one of important professional fields in water conservancy, also belongs to environmental protection industry, the hydrology water resource worker usually will assist the surveying pole to carry out the water depth measurement when studying water resources.

[0003] When carrying out water depth measurement to deeper water area, generally needs through splicing multiple surveying poles to carry out water depth measurement, currently, the splicing mode of multiple surveying poles mostly adopts threaded connection, and the splicing process is more laborious.

[0004] In the prior art, for example, a kind of telescopic measuring rod is proposed in Chinese patent with publication number CN218847328U, by the combination of hand-held rod, first limit bolt, telescopic rod, storage slot, second limit bolt, fixed pin, measuring rod, through hole, first extension measuring rod, first locking bolt, second locking bolt and second extension measuring rod, the telescopic measuring rod can be conveniently stored, the space occupied by telescopic measuring rod when carrying is reduced, and it is also convenient for operator to stand on river bank and extend telescopic measuring rod into river to carry out water depth detection, improve the convenience of telescopic measuring rod in carrying and using process.But in the above technical scheme, first extension measuring rod and second extension measuring rod are extracted from measuring rod and first extension measuring rod respectively, then first locking bolt and second locking bolt are screwed to fix measuring rod and first extension measuring rod and first extension measuring rod and second extension measuring rod respectively, and measuring rod and telescopic rod also need to be fixed by screwing second limit bolt, which is more complicated to operate and time-consuming. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of hydrology water resource telescopic measuring rod, solve the problem that the fixing of the measuring rod and first extension measuring rod and first extension measuring rod and second extension measuring rod of existing telescopic measuring is more complicated to operate.

[0006] To achieve the above object, the utility model provides a kind of hydrology water resource telescopic measuring rod, including telescopic sounding rod and the storage rod that can store telescopic sounding rod;

[0007] The telescopic sounding rod includes main measuring rod, extension rod one and extension rod two, the main measuring rod and the extension rod one are tubular rod, the upper end of the main measuring rod is hinged with the connecting end of the storage rod, the extension rod one slides in the main measuring rod, the extension rod two slides in the extension rod one,

[0008] The rod body near the lower end of the main measuring rod is provided with a pressing fixing assembly one capable of fixing the extension rod one, and the rod body near the lower end of the extension rod one is provided with a pressing fixing assembly two capable of fixing the extension rod two.

[0009] Preferably, the storage rod is a U-shaped rod.

[0010] The front side of the rod body near the lower end of the main measuring rod is provided with a jack one, and the upper end of the main measuring rod is provided with a connecting lug, the side surface of the connecting lug is provided with a hinged hole, and a hinge shaft is arranged in the hinged hole. The upper end of the main measuring rod is hinged to the open end of the storage rod through the hinge shaft.

[0011] Preferably, the side surface of the connecting lug is provided with two cylindrical clamping grooves, and the two clamping grooves are arranged around the hinged hole. The line between one of the clamping grooves and the hinged hole is perpendicular to the line between the other clamping groove and the hinged hole.

[0012] Preferably, the inner side and the outer side of the rod body on one side of the open end of the storage rod are respectively provided with a through hole and a sliding hole, the axis lines of the through hole and the sliding hole coincide, a cylindrical sliding cavity is arranged between the through hole and the sliding hole, the sliding cavity is in communication with the through hole and the sliding hole, and the diameter of the sliding cavity is greater than the diameters of the through hole and the sliding hole.

[0013] A clamping rod is arranged in the sliding cavity, the two ends of the clamping rod are respectively slidably arranged in the through hole and the sliding hole, the outer end of the clamping rod extends out of the storage rod, and the inner end of the clamping rod is hemispherical.

[0014] Preferably, the front side of the rod body near the upper end of the extension rod one is provided with an upper fixing groove one, the front side of the rod body near the lower end of the extension rod one is provided with a jack two and a lower fixing groove one, and the lower fixing groove one is located above the jack two.

[0015] Preferably, the front side of the rod body near the upper end of the extension rod two is provided with an upper fixing groove two, and the front side of the rod body near the lower end of the extension rod two is provided with a lower fixing groove two.

[0016] Preferably, the pressing fixing assembly one comprises a pressing fixing frame one, a limiting plate one and a reset spring one.

[0017] The inner side surfaces of the left and right side frame bodies of the pressing fixing frame one are respectively provided with a sliding groove one, the limiting plate one is provided with two, the two limiting plates one are respectively fixed to the left and right side surfaces of the main measuring rod, the pressing fixing frame one is sleeved outside the rod body near the lower end of the main measuring rod, and the limiting plate one is slidably arranged in the sliding groove one.

[0018] The reset spring one is fixed between the rear side wall of the sliding groove one and the limiting plate one.

[0019] The inner side surface of the front side frame body of the pressing fixed frame is provided with a fixed insertion block one.

[0020] Preferably, guide holes one are respectively arranged in the left and right side frame bodies of the pressing fixed frame one, the guide holes one are located behind the sliding grooves one, and the guide holes one are communicated with the sliding grooves one.

[0021] The rear side surface of the limiting plate one is fixed with a guide rod one, the guide rod one slides in the guide hole one, and the return spring one is sleeved outside the guide rod one.

[0022] Preferably, the pressing fixed assembly two comprises a pressing fixed frame two, a limiting plate two and a return spring two.

[0023] The inner side surfaces of the left and right side frame bodies of the pressing fixed frame two are respectively provided with sliding grooves two, the limiting plate two is provided with two, the two limiting plates two are respectively fixed on the left and right side surfaces of the extension rod one, the pressing fixed frame two is sleeved outside the rod body of the extension rod one close to the lower end, and the limiting plate two slides in the sliding groove two.

[0024] The return spring two is fixed between the rear side wall of the sliding groove two and the limiting plate two.

[0025] The inner side surface of the front side frame body of the pressing fixed frame two is provided with a fixed insertion block two.

[0026] Preferably, guide holes two are respectively arranged in the left and right side frame bodies of the pressing fixed frame two, the guide holes two are located behind the sliding grooves two, and the guide holes two are communicated with the sliding grooves two.

[0027] The rear side surface of the limiting plate two is fixed with a guide rod two, the guide rod two slides in the guide hole two, and the return spring two is sleeved outside the guide rod two.

[0028] The utility model has the following beneficial effects:

[0029] 1、When the telescopic sounding rod is to be released, the clamping rod can be pulled outward, the hemispherical end of the clamping rod is slid out of one of the clamping grooves, the telescopic sounding rod and the storage rod are quickly fixed, the telescopic sounding rod is turned downward by 90 degrees, at this time, the other clamping groove is aligned with the clamping rod, the hemispherical end of the clamping rod is pushed out of the through hole by the anti-dropping plate and inserted into the second clamping groove, and the telescopic sounding rod and the storage rod are fixed again.

[0030] 2, press fixed assembly one and press fixed assembly two, can quickly remove the main measuring rod and extension rod one and extension rod one and extension rod two, also can quickly fix the main measuring rod and extension rod one and extension rod one and extension rod two, so that the telescopic sounding rod can be quickly lengthened, simple operation, time saving and labor saving. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The overall structure diagram of the hydrology and water resource telescopic measuring rod is described in the utility model.

[0032] Figure 2 The structure diagram of the pressing fixed frame one in the hydrology and water resource telescopic measuring rod is described in the utility model.

[0033] Figure 3 The structure diagram of the pressing fixed frame two in the hydrology and water resource telescopic measuring rod is described in the utility model.

[0034] Figure 4 The connection diagram of the main measuring rod and the extension rod one in the hydrology and water resource telescopic measuring rod is described in the utility model.

[0035] Figure 5 The connection diagram of the extension rod one and the extension rod two in the hydrology and water resource telescopic measuring rod is described in the utility model.

[0036] Figure 6 The connection diagram of the pressing fixed frame one and the main measuring rod and the pressing fixed frame two and the extension rod one in the hydrology and water resource telescopic measuring rod is described in the utility model.

[0037] Figure 7 The structure diagram of the storage rod connecting end in the hydrology and water resource telescopic measuring rod is described in the utility model.

[0038] Figure 8 The connection diagram of the storage rod and the connecting lug in the hydrology and water resource telescopic measuring rod is described in the utility model.

[0039] In the diagram: 1. Storage rod; 11. Handle; 12. Sliding cavity; 13. Sliding hole; 14. Through hole; 2. Telescopic depth measuring rod; 21. Main measuring rod; 211. Insertion hole one; 212. Connecting ear; 2121. Slot; 2122. Hinge hole; 213. Limiting plate one; 214. Guide rod one; 22. Extension rod one; 221. Insertion hole two; 222. Upper fixing groove one; 223. Lower fixing groove one; 224. Limiting plate two; 225. 23. Guide rod 2; 231. Upper fixing groove 2; 232. Lower fixing groove 2; 3. Pressing fixing frame 1; 31. Slide groove 1; 32. Guide hole 1; 33. Fixing insert 1; 4. Pressing fixing frame 2; 41. Slide groove 2; 42. Guide hole 2; 43. Fixing insert 2; 5. Counterweight; 6. Return spring 1; 7. Return spring 2; 8. Locking rod; 81. Anti-detachment plate; 9. Push spring; 100. Hinge shaft. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0041] This utility model proposes a telescopic measuring rod for hydrological and water resource monitoring, such as... Figure 1 As shown, the device includes a telescopic sounding rod 2 and a storage rod 1 for storing the telescopic sounding rod 2. The telescopic sounding rod 2 includes a main measuring rod 21, an extension rod 1 22, and an extension rod 23. Both the main measuring rod 21 and the extension rod 1 22 are tubular rods. The upper end of the main measuring rod 21 is hinged to the connecting end of the storage rod 1. The extension rod 1 22 slides inside the main measuring rod 21, and the extension rod 23 slides inside the extension rod 1 22. The main measuring rod 21 has a pressing and fixing component 1 near its lower end that can fix the extension rod 1 22, and the extension rod 1 22 has a pressing and fixing component 2 near its lower end that can fix the extension rod 23.

[0042] like Figure 1 As shown, the storage rod 1 is a U-shaped rod, and the closed end of the storage rod 1 is provided with a handle 11.

[0043] like Figure 4 As shown, the main measuring rod 21 has an insertion hole 211 on the front side of the rod body near the lower end, and a connecting ear 212 is provided at the upper end of the main measuring rod 21. The side of the connecting ear 212 has a hinge hole 2122, and a hinge shaft 100 is provided in the hinge hole 2122. The upper end of the main measuring rod 21 is hinged to the open end of the storage rod 1 through the hinge shaft 100.

[0044] like Figure 4 As shown, one side of the connecting ear 212 is provided with two cylindrical slots 2121. The two slots 2121 are arranged around the hinge hole 2122. The line connecting one slot 2121 and the hinge hole 2122 is perpendicular to the line connecting the other slot 2121 and the hinge hole 2122.

[0045] As shown in Figure 7 and Figure 8 , the inner side and the outer side of the rod body on the one side of the open end of the storage rod 1 are respectively provided with a through hole 14 and a sliding hole 13, the axes of the through hole 14 and the sliding hole 13 coincide, a columnar sliding cavity 12 is provided between the through hole 14 and the sliding hole 13, the sliding cavity 12 communicates with the through hole 14 and the sliding hole 13, and the diameter of the sliding cavity 12 is greater than the diameter of the through hole 14 and the sliding hole 13.

[0046] The sliding cavity 12 is provided with a clamping rod 8, both ends of the clamping rod 8 are respectively slid in the through hole 14 and the sliding hole 13, the outer end of the clamping rod 8 extends out of the storage rod 1, and the inner end of the clamping rod 8 is hemispherical.

[0047] As shown in Figure 8 , the rod body near the through hole 14 of the clamping rod 8 is provided with an anti-dropping plate 81, the diameter of the anti-dropping plate 81 is the same as the diameter of the sliding cavity 12, and the anti-dropping plate 81 slides in the sliding cavity 12.

[0048] The outer cavity wall of the sliding cavity 12 is fixed with the push spring 9 between the anti-dropping plate 81.

[0049] In the initial state, the telescopic depth rod 2 is in the storage rod 1, when the telescopic depth rod 2 is used to measure the water depth, the clamping rod 8 is first pulled outwards, the clamping rod 8 slides in the sliding cavity 12, the push spring 9 is compressed, the hemispherical end of the clamping rod 8 slides out of one of the clamping grooves 2121 and slides into the through hole 14, so that the fixation of the telescopic depth rod 2 and the storage rod 1 is released, then the telescopic depth rod 2 is turned downward by 90°, at this time, the other clamping groove 2121 is aligned with the clamping rod 8, the push spring 9 is restored, and the hemispherical end of the clamping rod 8 is pushed out of the through hole 14 and inserted into the second clamping groove 2121 through the anti-dropping plate 81, so that the telescopic depth rod 2 and the storage rod 1 are fixed again. In this way, the telescopic depth rod 2 and the storage rod 1 can be quickly and accurately fixed in a state of 90°, which is simple to operate and saves time and effort.

[0050] As shown in Figure 4 , the front side of the rod body near the upper end of the extension rod one 22 is provided with an upper fixed slot one 222, the front side of the rod body near the lower end of the extension rod one 22 is provided with a second insertion hole 221 and a lower fixed slot one 223, and the lower fixed slot one 223 is located above the second insertion hole 221.

[0051] As shown in Figure 5 , the front side of the rod body near the upper end of the extension rod two 23 is provided with an upper fixed slot two 231, and the front side of the rod body near the lower end of the extension rod two 23 is provided with a lower fixed slot two 232.

[0052] As shown in Figure 5 , the lower end of the extension rod two 23 is provided with a counterweight 5.

[0053] As shown in Figure 2And Figure 6 The pressing fixing assembly one includes a pressing fixing frame one 3, a limiting plate one 213 and a reset spring one 6, as shown in the figure;

[0054] The inner side of the left and right side frame bodies of the pressing fixing frame one 3 is respectively provided with a sliding groove one 31, and the limiting plate one 213 is provided with two, which are respectively fixed on the left and right sides of the main measuring rod 21. The pressing fixing frame one 3 is sleeved outside the rod body near the lower end of the main measuring rod 21, and the limiting plate one 213 slides in the sliding groove one 31;

[0055] The reset spring one 6 is fixed between the rear side wall of the sliding groove one 31 and the limiting plate one 213;

[0056] The inner side of the front side frame body of the pressing fixing frame one 3 is provided with a fixed plug one 33.

[0057] As shown in the figure, Figure 6 The left and right side frame bodies of the pressing fixing frame one 3 are respectively provided with a guide hole one 32, which is located behind the sliding groove one 31 and communicates with the sliding groove one 31;

[0058] The rear side of the limiting plate one 213 is fixed with a guide rod one 214, which slides in the guide hole one 32, and the reset spring one 6 is sleeved outside the guide rod one 214.

[0059] The setting of the guide rod one 214 can prevent the reset spring one 6 from bending when compressed, and can also increase the connection stability of the pressing fixing frame one 3 and the main measuring rod 21.

[0060] As shown in the figure, Figure 3 And Figure 6 The pressing fixing assembly two includes a pressing fixing frame two 4, a limiting plate two 224 and a reset spring two 7, as shown in the figure;

[0061] The inner side of the left and right side frame bodies of the pressing fixing frame two 4 is respectively provided with a sliding groove two 41, and the limiting plate two 224 is provided with two, which are respectively fixed on the left and right sides of the extension rod one 22. The pressing fixing frame two 4 is sleeved outside the rod body near the lower end of the extension rod one 22, and the limiting plate two 224 slides in the sliding groove two 41;

[0062] The reset spring two 7 is fixed between the rear side wall of the sliding groove two 41 and the limiting plate two 224;

[0063] The inner side of the front side frame body of the pressing fixing frame two 4 is provided with a fixed plug two 43.

[0064] As shown in the figure, Figure 6 The left and right side frame bodies of the pressing fixing frame two 4 are respectively provided with a guide hole two 42, which is located behind the sliding groove two 41 and communicates with the sliding groove two 41;

[0065] The rear side of the limiting plate two 224 is fixed with a guide rod two 225 which slides in the guide hole two 42, and the reset spring two 7 is sleeved outside the guide rod two 225.

[0066] The guide rod two 225 can prevent the reset spring two 7 from bending when compressed, and can increase the connection stability of the pressing fixed frame two 4 and the extension rod one 22.

[0067] When the telescopic sounding rod 2 is in the retracted state, the fixed block one 33 is inserted into the lower fixed groove one 223 through the insertion hole one 211 to fix the main rod 21 and the extension rod one 22, and the fixed block two 43 is inserted into the lower fixed groove two 232 through the insertion hole two 221 to fix the extension rod one 22 and the extension rod two 23.

[0068] When the water depth is measured and the telescopic sounding rod 2 needs to be lengthened, the pressing fixed frame two 4 is first pushed forward, the fixed block two 43 is slid out of the insertion hole two 221 and the lower fixed groove two 232, the limiting plate two 224 slides in the sliding groove two 41, the reset spring two 7 is compressed, and the guide rod two 225 slides into the guide hole two 42, so that the fixation of the extension rod one 22 and the extension rod two 23 is released, then the extension rod two 23 is pulled downward until the fixed block two 43 is aligned with the upper fixed groove two 231, the reset spring two 7 is restored, the pressing fixed frame two 4 is pushed backward, the fixed block two 43 passes through the insertion hole two 221 and is inserted into the upper fixed groove two 231 to fix the extension rod one 22 and the extension rod two 23 again, then the pressing fixed frame one 3 is pushed forward, the fixed block one 33 is slid out of the insertion hole one 211 and the lower fixed groove one 223, the limiting plate one 213 slides in the sliding groove one 31, the reset spring one 6 is compressed, and the guide rod one 214 slides into the guide hole one 32, so that the fixation of the main rod 21 and the extension rod one 22 is released, then the extension rod one 22 is pulled downward until the fixed block one 33 is aligned with the upper fixed groove one 222, the reset spring one 6 is restored, the pressing fixed frame one 3 is pushed backward, the fixed block one 33 passes through the insertion hole one 211 and is inserted into the upper fixed groove one 222 to fix the main rod 21 and the extension rod one 22 again, so that the lengthening of the telescopic sounding rod 2 is completed. In this way, the telescopic sounding rod 2 can be quickly lengthened, and the operation is simple, time-saving and labor-saving.

[0069] When the telescopic depth rod 2 is used to measure water depth, the clamping rod 8 is first pulled outward, the clamping rod 8 slides in the sliding cavity 12, the push spring 9 is compressed, the hemispherical end of the clamping rod 8 slides out of one of the clamping grooves 2121 and slides into the through hole 14, so that the telescopic depth rod 2 and the storage rod 1 are fixed, then the telescopic depth rod 2 is turned downward by 90°, at this time, the other clamping groove 2121 is aligned with the clamping rod 8, the push spring 9 is restored, the hemispherical end of the clamping rod 8 is pushed out of the through hole 14 by the anti-dropping plate 81 and is inserted into the second clamping groove 2121, and the telescopic depth rod 2 and the storage rod 1 are fixed again.

[0070] When the telescopic depth rod 2 is to be lengthened, the pressing fixed frame two 4 is first pushed forward, the fixed insertion block two 43 slides out of the insertion hole two 221 and the lower fixed groove two 232, the limiting plate two 224 slides in the sliding groove two 41, the reset spring two 7 is compressed, the guide rod two 225 slides into the guide hole two 42, so that the fixing of the extension rod one 22 and the extension rod two 23 is released, then the extension rod two 23 is pulled downward until the fixed insertion block two 43 is aligned with the upper fixed groove two 231, the reset spring two 7 is restored, the pressing fixed frame two 4 is pushed backward, the fixed insertion block two 43 passes through the insertion hole two 221 and is inserted into the upper fixed groove two 231, the extension rod one 22 and the extension rod two 23 are fixed again, then the pressing fixed frame one 3 is pushed forward, the fixed insertion block one 33 slides out of the insertion hole one 211 and the lower fixed groove one 223, the limiting plate one 213 slides in the sliding groove one 31, the reset spring one 6 is compressed, the guide rod one 214 slides into the guide hole one 32, so that the fixing of the main measuring rod 21 and the extension rod one 22 is released, then the extension rod one 22 is pulled downward until the fixed insertion block one 33 is aligned with the upper fixed groove one 222, the reset spring one 6 is restored, the pressing fixed frame one 3 is pushed backward, the fixed insertion block one 33 passes through the insertion hole one 211 and is inserted into the upper fixed groove one 222, the main measuring rod 21 and the extension rod one 22 are fixed again, so that the lengthening of the telescopic depth rod 2 is completed.

[0071] Although the embodiments of the present application have been disclosed as above, they are not limited to the application listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application. Those skilled in the art can easily realize other modifications, and therefore the present application is not limited to specific details and the drawings shown and described herein.

Claims

1. A hydrological water resource extensometer, characterised in that, The utility model provides a telescopic sounding rod and a telescopic rod, and the telescopic sounding rod is capable of being stored in the telescopic rod. The telescopic sounding rod comprises a main rod (21), an extension rod I (22) and an extension rod II (23), the main rod (21) and the extension rod I (22) are both tubular rods, the upper end of the main rod (21) is hinged to the connecting end of the telescopic rod (1), the extension rod I (22) slides in the main rod (21), and the extension rod II (23) slides in the extension rod I (22). The rod body of the main rod (21) near the lower end is provided with a pressing fixing assembly I capable of fixing the extension rod I (22), and the rod body of the extension rod I (22) near the lower end is provided with a pressing fixing assembly II capable of fixing the extension rod II (23).

2. The hydrologic water resource extensometer of claim 1, wherein, The telescopic rod (1) is a U-shaped rod. The front side of the rod body of the main rod (21) near the lower end is provided with a insertion hole I (211), the upper end of the main rod (21) is provided with a connecting lug (212), the side surface of the connecting lug (212) is provided with a hinge hole (2122), a hinge shaft (100) is arranged in the hinge hole (2122), and the upper end of the main rod (21) is hinged to the open end of the telescopic rod (1) through the hinge shaft (100).

3. The hydrologic water resource extensometer of claim 2, wherein, One side surface of the connecting lug (212) is provided with two cylindrical clamping grooves (2121), the two clamping grooves (2121) are arranged around the hinge hole (2122), and the line between one clamping groove (2121) and the hinge hole (2122) is perpendicular to the line between the other clamping groove (2121) and the hinge hole (2122).

4. The hydrologic water resource extensometer of claim 1, wherein, The inner side and the outer side of the rod body of the telescopic rod (1) on one side of the open end are provided with a through hole (14) and a sliding hole (13) respectively, the axes of the through hole (14) and the sliding hole (13) coincide, a cylindrical sliding cavity (12) is arranged between the through hole (14) and the sliding hole (13), the sliding cavity (12) is in communication with the through hole (14) and the sliding hole (13), and the diameter of the sliding cavity (12) is greater than the diameter of the through hole (14) and the sliding hole (13). A clamping rod (8) is arranged in the sliding cavity (12), the two ends of the clamping rod (8) slide in the through hole (14) and the sliding hole (13) respectively, the outer end of the clamping rod (8) extends out of the telescopic rod (1), and the inner end of the clamping rod (8) is hemispherical.

5. The hydrologic water resource extensometer of claim 1, wherein, The front side of the rod body of the extension rod I (22) near the upper end is provided with an upper fixing groove I (222), the front side of the rod body of the extension rod I (22) near the lower end is provided with an insertion hole II (221) and a lower fixing groove I (223), and the lower fixing groove I (223) is located above the insertion hole II (221).

6. The hydrologic water resource extensometer of claim 1, wherein, The front side of the rod body of the extension rod II (23) near the upper end is provided with an upper fixing groove II (231), and the front side of the rod body of the extension rod II (23) near the lower end is provided with a lower fixing groove II (232).

7. The hydrologic water resource extensometer of claim 1, wherein, The pressing fixing assembly I comprises a pressing fixing frame I (3), a limiting plate I (213) and a reset spring I (6). The inner side of the left and right side frame bodies of the pressing fixed frame one (3) is respectively provided with a sliding groove one (31), the limiting plate one (213) is provided with two, the two limiting plate ones (213) are respectively fixed on the left and right sides of the main measuring rod (21), the pressing fixed frame one (3) is sleeved outside the rod body close to the lower end of the main measuring rod (21), and the limiting plate one (213) slides in the sliding groove one (31). The reset spring one (6) is fixed between the rear side wall of the sliding groove one (31) and the limiting plate one (213); The inner side of the front side frame body of the pressing fixed frame one (3) is provided with a fixed plug one (33).

8. The hydrologic water resource extensometer of claim 7, wherein, The inner side of the front side frame body of the pressing fixed frame one (3) is provided with a fixed plug one (33). The inner side of the front side frame body of the pressing fixed frame one (3) is provided with a fixed plug one (33).

9. The hydrologic water resource extensometer of claim 1, wherein, The rear side of the limiting plate one (213) is fixed with a guide rod one (214), the guide rod one (214) slides in the guide hole one (32), and the reset spring one (6) is sleeved outside the guide rod one (214). The pressing fixed assembly two includes a pressing fixed frame two (4), a limiting plate two (224) and a reset spring two (7); The inner side of the left and right side frame bodies of the pressing fixed frame two (4) is respectively provided with a sliding groove two (41), the limiting plate two (224) is provided with two, the two limiting plate twos (224) are respectively fixed on the left and right sides of the extension rod one (22), the pressing fixed frame two (4) is sleeved outside the rod body close to the lower end of the extension rod one (22), and the limiting plate two (224) slides in the sliding groove two (41). The reset spring two (7) is fixed between the rear side wall of the sliding groove two (41) and the limiting plate two (224).

10. The hydrologic water resource extensometer of claim 9, wherein, The inner side of the front side frame body of the pressing fixed frame two (4) is provided with a fixed plug two (43). The inner side of the front side frame body of the pressing fixed frame two (4) is provided with a fixed plug two (43). The inner side of the front side frame body of the pressing fixed frame two (4) is provided with a fixed plug two (43). The rear side of the limiting plate two (224) is fixed with a guide rod two (225), the guide rod two (225) slides in the guide hole two (42), and the reset spring two (7) is sleeved outside the guide rod two (225).

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