Sediment sampling device for water and soil conservation monitoring

Abstract

The invention discloses a sediment sampling device for water and soil conservation monitoring, and relates to the technical field of sediment sampling. The device comprises an adjusting rod; the device needs to be inserted into water, the blade is inserted into silt to loosen the silt, by means of the blade, personnel can conveniently insert the adjusting pipe into the silt, then the pulling block is moved away from the bottom end of the adjusting pipe, then the bottom end of the adjusting pipe is inserted into the silt, then the silt enters the adjusting pipe, the adjusting pipe is pulled upwards, and the silt can be loosened. The pulling block is moved to the bottom end of the adjusting pipe again, the magnetic block is connected with the blade in a magnetic attraction mode, the sealing performance of the bottom end of the adjusting pipe can be improved through the sealing block, then the adjusting pipe is pulled out of the water, and therefore when the digging mechanism is taken out of the water, the digging mechanism can be sealed, the taken silt is prevented from being scattered by water flow, and the working efficiency is improved. Furthermore, a worker does not need to sample the sediment for multiple times in order to obtain the required sampling amount, the operation is simple, and the use by the worker is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of sediment sampling, in particular to a sediment sampling device for soil and water conservation monitoring. Background Art

[0002] Soil and water conservation is a cause to prevent and control soil erosion, protect, improve and rationally utilize soil and water resources, improve land productivity and establish a good ecological environment. Soil and water conservation is a highly comprehensive system project. Soil and water conservation covers a wide range and is complex. It is both a theoretical and practical problem. In soil and water conservation monitoring, personnel will use a soil and water conservation monitoring sediment sampling device to sample the sediment in the water to observe and study the soil and water conservation status. The existing soil and water conservation monitoring sediment sampling device is easy to operate and convenient for personnel to use, but there are still many inconveniences.

[0003] When using the existing sediment sampling device for soil and water conservation monitoring, personnel will adjust its length, then insert one end of it into the water, and then use the digging mechanism on it to dig the sediment on the bottom of the water, and finally take the dug sediment out of the water. In the process of pulling the device, the water in contact with the device will move. When the water moves, it will disperse the sediment dug by the digging mechanism, so the actual amount of sediment obtained will be less, so that personnel need to take samples multiple times to obtain the required amount of sediment.

[0004] In view of the above problems, the inventors proposed a sediment sampling device for soil and water conservation monitoring to solve the above problems. Summary of the invention

[0005] In order to solve the problem that the existing sediment sampling device for soil and water conservation monitoring is difficult to prevent water flow from dispersing the sediment excavated in the excavation mechanism thereof when in use; the purpose of the present invention is to provide a sediment sampling device for soil and water conservation monitoring.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a sediment sampling device for soil and water conservation monitoring, comprising an adjusting rod, the top of which is fixedly connected to a pulling auxiliary rod, which is convenient for personnel to hold and pull the adjusting rod, and the surface of the pulling auxiliary rod is provided with pulling friction lines, which can increase the friction between the palm of the personnel and the pulling auxiliary rod, thereby facilitating the personnel to hold the pulling auxiliary rod tightly, the top of the pulling auxiliary rod is fixedly connected to a mounting round block, and the top of the mounting round block is fixedly connected to an elastic wrist strap, and when holding the pulling auxiliary rod tightly, the personnel need to put the elastic wrist strap on the wrist to prevent the pulling auxiliary rod from falling from the personnel's hand, The bottom end of the adjusting rod is movably connected with an adjusting tube, the surface of the adjusting tube is fixedly connected with a connecting block, one side of the connecting block is fixedly connected with a fixing ring, the inner wall of the fixing ring is fixedly connected with a fixing spring, one end of the fixing spring is fixedly connected with a pushing tube, one end of the pushing tube is plugged with a pushing limiting tube, when the pushing tube and the fixing spring move, the pushing limiting tube can be used to improve the stability of the pushing tube and the fixing spring when they move, one end of the pushing limiting tube is fixedly connected with the inner wall of the fixing ring, the pushing limiting tube is plugged into the inside of the fixing spring, the surface of the pushing limiting tube is movably connected with the inner wall of the fixing spring, and since the surface of the pushing limiting tube is movably connected with the inner wall of the fixing spring, it is convenient to fix the spring. The limit block is used to push the limit tube to move, and one end of the push tube is fixedly connected to the limit block. The limit block is used to facilitate personnel to fix the adjusting rod. The surfaces of the adjusting rod and the adjusting tube are provided with limit grooves that match the limit block. The bottom end of the adjusting tube is movably connected with a pulling block, and the top of the pulling block is provided with a fixing groove. The inside of the fixing groove is fixedly connected with a sealing block. The sealing performance of the bottom end of the adjusting tube can be improved by using the sealing block. The surface of the pulling block is provided with an installation groove, and the inside of the installation groove is fixedly connected with a magnetic block. The magnetic block can be adsorbed together with the blade, thereby improving the stability of the pulling block when in contact with the adjusting tube. A blade is magnetically connected to one side of the magnetic block, and the blade is fixedly connected to the adjusting tube. A pulling plate is fixedly connected to one side of the block, a first adjusting tube is fixedly connected to one side of the pulling plate, a second adjusting tube is movably connected to the top of the first adjusting tube, a telescopic tube is fixedly connected to the top of the second adjusting tube, one end of the telescopic tube is movably connected to a fixed connecting tube, the adjusting tube is fixedly connected to supporting tubes all around, one end of the supporting tube is fixedly connected to a storage box, after taking the adjusting tube out of the water, the mud and sand need to be taken out of the adjusting tube, and then put into the storage box for storage, a marking block is fixedly connected to the surface of the storage box, and during the sampling process, personnel can place the mud and sand taken at different depths in different storage boxes for storage according to the different marking blocks set on the storage boxes.

[0007] Preferably, a mounting thread groove is provided on the top of the storage box, and a mounting thread cover is connected to the internal threads of the mounting thread groove. After placing the mud and sand in the storage box, the mounting thread cover needs to be installed in the mounting thread groove, and then installed and fixed on the storage box. A sealing rod is fixedly connected to the inner top wall of the mounting thread cover. After the mounting thread cover is installed on the storage box, the sealing rod will enter the interior of the storage box. The top of the storage box can be sealed by the sealing rod, and the surface of the sealing rod fits with the inner wall of the storage box. Rotation auxiliary rods are fixedly connected on both sides of the top of the mounting thread cover. When removing the mounting thread cover, the rotation auxiliary rod needs to be rotated to drive the mounting thread cover to rotate together. The rotation auxiliary rod is used to facilitate personnel to remove the mounting thread cover from the storage box. The surface of the rotation auxiliary rod is provided with rotation friction patterns. The rotation friction patterns are used to facilitate personnel to hold the rotation auxiliary rod tightly when rotating the rotation auxiliary rod.

[0008] Preferably, a first threaded hole is provided on the surface of the first adjusting tube and the second adjusting tube, and the internal thread of the first threaded hole is connected to the first threaded tube. After the first threaded tube is installed in the first threaded hole, one end of the second adjusting tube can be prevented from moving in the first adjusting tube. A second threaded hole is provided on the surface of the telescopic tube and the fixed connecting tube, and the internal thread of the second threaded hole is connected to the second threaded tube. After the second threaded tube is installed in the second threaded hole, the telescopic tube can be fixed to prevent one end from moving in the fixed connecting tube. One ends of the first threaded tube and the second threaded tube are fixedly connected to an installation fixing rod. The installation fixing rod is used to facilitate personnel to rotate the first threaded tube and the second threaded tube, and then facilitate personnel to install and disassemble the first threaded tube and the second threaded tube.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The device can prevent mud and sand from moving out of the regulating tube by pulling the block. When in use, it is necessary to pull the regulating rod to adjust the overall length of the device, and then insert the device into the water so that the blade is inserted into the mud and sand to loosen the mud and sand. The blade is used to facilitate personnel to insert the regulating tube into the mud and sand, and then the pulling block is removed from the bottom end of the regulating tube, and then the bottom end of the regulating tube is inserted into the mud and sand, and then the mud and sand will enter the regulating tube, and the regulating tube is pulled upward to make the pulling block move to the bottom end of the regulating tube again, and the magnetic block will be magnetically connected with the blade, and the sealing block can be used to improve the sealing of the bottom end of the regulating tube, and then the regulating tube can be pulled out of the water. Therefore, when the digging mechanism is taken out of the water, the device can seal the digging mechanism to prevent the taken mud and sand from being dispersed by the water flow, thereby achieving the effect of not requiring personnel to sample the mud and sand multiple times to obtain the required sampling amount, and the operation is simple and convenient for personnel to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the structure of the first regulating tube in the present invention.

[0014] Figure 3 It is a schematic diagram of the structure of the second regulating tube in the present invention.

[0015] Figure 4 It is a schematic diagram of the structure of the fixed connecting pipe in the present invention.

[0016] Figure 5 For the present invention Figure 2 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0017] Figure 6 For the present invention Figure 2 Schematic diagram of the structure with a partial enlargement at point B in the middle.

[0018] Figure 7 For the present invention Figure 2 Schematic diagram of the partially enlarged structure at point C in the middle.

[0019] Figure 8 For the present invention Figure 3 Schematic diagram of the structure with a partial enlargement at point D in the middle.

[0020] Fig. 9 For the present invention Figure 4 Schematic diagram of the partially enlarged structure at point E in the middle.

[0021] Fig.10 For the present invention Figure 6 Schematic diagram of the structure with a partial enlargement at point F in the middle.

[0022] In the figure: 1. adjusting rod; 2. adjusting tube; 3. connecting block; 4. fixing ring; 5. fixing spring; 6. pushing tube; 7. limiting block; 8. limiting groove; 9. pulling block; 10. fixing groove; 11. sealing block; 12. magnetic block; 13. blade; 14. pulling plate; 15. first adjusting tube; 16. second adjusting tube; 17. telescopic tube; 18. fixed connecting tube; 19. supporting tube; 20. storage box; 21. marking block; 22. installing threaded groove; 23. installing threaded cover; 24. sealing rod; 25. rotating auxiliary rod; 26. pulling auxiliary rod; 27. installing round block; 28. elastic wrist strap; 29. ​​pushing limiting tube; 30. first threaded hole; 31. first threaded tube; 32. second threaded hole; 33. second threaded tube; 34. installing fixing rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1: Figure 1-10As shown, the present invention provides a sediment sampling device for soil and water conservation monitoring, including an adjusting rod 1, the bottom end of the adjusting rod 1 is movably connected with an adjusting tube 2, the surface of the adjusting tube 2 is fixedly connected with a connecting block 3, one side of the connecting block 3 is fixedly connected with a fixing ring 4, the inner wall of the fixing ring 4 is fixedly connected with a fixing spring 5, one end of the fixing spring 5 is fixedly connected with a pushing tube 6, one end of the pushing tube 6 is fixedly connected with a limiting block 7, the limiting block 7 is used to facilitate personnel to fix the adjusting rod 1, the surfaces of the adjusting rod 1 and the adjusting tube 2 are both provided with limiting grooves 8 matched with the limiting block 7, the bottom end of the adjusting tube 2 is movably connected with a pulling block 9, the top of the pulling block 9 is provided with a fixing groove 10, the inside of the fixing groove 10 is fixedly connected with a sealing block 11, the sealing performance of the bottom end of the adjusting tube 2 can be improved by using the sealing block 11, the surface of the pulling block 9 is provided with an installation groove, the inside of the installation groove is fixedly connected with a magnetic block 12, the magnetic block 12 can be adsorbed together with a blade 13, and can To improve the stability of the pulling block 9 when in contact with the adjusting tube 2, a blade 13 is magnetically connected to one side of the magnetic block 12, and the blade 13 is fixedly connected to the adjusting tube 2. A pulling plate 14 is fixedly connected to one side of the pulling block 9, and a first adjusting tube 15 is fixedly connected to one side of the pulling plate 14. The top of the first adjusting tube 15 is movably connected to the second adjusting tube 16, and the top of the second adjusting tube 16 is fixedly connected to a telescopic tube 17, and one end of the telescopic tube 17 is movably connected to a fixed connecting tube 18. Support tubes 19 are fixedly connected to the four sides of the adjusting tube 2, and one end of the support tube 19 is fixedly connected to a storage box 20. After the adjusting tube 2 is taken out of the water, the silt needs to be taken out of the adjusting tube 2, and then it is placed in the storage box 20 for storage. A marking block 21 is fixedly connected to the surface of the storage box 20. During the sampling process, personnel can place the silt taken at different depths in different storage boxes 20 for storage according to the different marking blocks 21 set on the storage box 20.

[0025] A mounting thread groove 22 is formed on the top of the storage box 20 , and a mounting thread cover 23 is connected to the inner thread of the mounting thread groove 22 .

[0026] By adopting the above technical solution, after placing the mud and sand in the storage box 20 , the mounting thread cover 23 needs to be installed in the mounting thread groove 22 , and then mounted and fixed on the storage box 20 .

[0027] A sealing rod 24 is fixedly connected to the inner top wall of the threaded cover 23 , and the surface of the sealing rod 24 is in contact with the inner wall of the storage box 20 .

[0028] By adopting the above technical solution, after the mounting threaded cover 23 is mounted on the storage box 20 , the sealing rod 24 will enter the interior of the storage box 20 , and the top of the storage box 20 can be sealed by the sealing rod 24 .

[0029] Both sides of the top of the installation threaded cover 23 are fixedly connected with rotation auxiliary rods 25, and the surface of the rotation auxiliary rods 25 is provided with rotation friction patterns.

[0030] By adopting the above technical solution, when removing the installation threaded cover 23, it is necessary to rotate the auxiliary rod 25 so that it drives the installation threaded cover 23 to rotate together. The auxiliary rod 25 is used to facilitate personnel to remove the installation threaded cover 23 from the storage box 20, and the rotation friction pattern is used to facilitate personnel to hold the auxiliary rod 25 tightly when rotating the auxiliary rod 25.

[0031] The top end of the adjusting rod 1 is fixedly connected with a pulling auxiliary rod 26 , and the surface of the pulling auxiliary rod 26 is provided with pulling friction lines.

[0032] By adopting the above technical solution, the auxiliary pulling rod 26 is used to facilitate personnel to hold and pull the adjustment rod 1. The friction pattern is used to increase the friction between the palm of the person and the auxiliary pulling rod 26, thereby facilitating the person to hold the auxiliary pulling rod 26 tightly.

[0033] The top end of the pulling auxiliary rod 26 is fixedly connected with a mounting round block 27 , and the top of the mounting round block 27 is fixedly connected with an elastic wrist strap 28 .

[0034] By adopting the above technical solution, when holding the auxiliary pulling rod 26, the personnel need to put the elastic wrist band 28 on the wrist to prevent the auxiliary pulling rod 26 from falling from the personnel's hand.

[0035] One end of the push tube 6 is plugged with a push limit tube 29 , and one end of the push limit tube 29 is fixedly connected to the inner wall of the fixing ring 4 .

[0036] By adopting the above technical solution, when the pushing tube 6 and the fixed spring 5 move, the pushing limiting tube 29 can be used to improve the stability of the pushing tube 6 and the fixed spring 5 when they move.

[0037] The push-limiting tube 29 is inserted into the interior of the fixing spring 5 , and the surface of the push-limiting tube 29 is movably connected to the inner wall of the fixing spring 5 .

[0038] By adopting the above technical solution, since the surface of the pushing and limiting tube 29 is movably connected to the inner wall of the fixing spring 5 , it is convenient for the fixing spring 5 to move on the pushing and limiting tube 29 .

[0039] A first threaded hole 30 is formed on the surface of the first adjusting tube 15 and the second adjusting tube 16 . A first threaded tube 31 is threadedly connected inside the first threaded hole 30 .

[0040] By adopting the above technical solution, after the first threaded tube 31 is installed in the first threaded hole 30 , one end of the second adjusting tube 16 can be prevented from moving in the first adjusting tube 15 .

[0041] A second threaded hole 32 is formed on the surface of the telescopic tube 17 and the fixed connection tube 18 . A second threaded tube 33 is threadedly connected inside the second threaded hole 32 . One end of the first threaded tube 31 and the second threaded tube 33 are fixedly connected to a mounting rod 34 .

[0042] By adopting the above technical solution, after the second threaded tube 33 is installed in the second threaded hole 32, the telescopic tube 17 can be fixed to prevent one end from moving in the fixed connecting tube 18. By using the installation fixing rod 34, it is convenient for personnel to rotate the first threaded tube 31 and the second threaded tube 33, thereby facilitating personnel to install and disassemble the first threaded tube 31 and the second threaded tube 33.

[0043] Working principle: when working, it is necessary to pull the pushing tube 6 so that one end of it squeezes the fixed spring 5, so that the fixed spring 5 continues to contract on the pushing limit tube 29. At the same time, the pushing tube 6 will continue to move on the pushing limit tube 29. When the pushing tube 6 and the fixed spring 5 move, the pushing limit tube 29 can improve the stability of the pushing tube 6 and the fixed spring 5 when they move. At the same time, the pushing tube 6 will drive the limit block 7 to move together, and then pull one side of the limit block 7 out of the limit groove 8. After that, it is necessary to pull the adjusting rod 1 according to the depth of water to adjust the length of the adjusting rod 1 extending from the adjusting tube 2, so as to adjust the overall length of the device. After adjusting to the appropriate position, the first threaded tube 31 needs to be pulled out from the first The adjusting tube 2 is taken out from the threaded hole 30, and the pulling block 9 is fixed to the bottom end of the adjusting tube 2 by adsorbing the magnetic block 12 and the blade 13 together. Then the device is inserted into the water, and the blade 13 is inserted into the mud and sand to loosen the mud and sand. The blade 13 is used to facilitate the personnel to insert the adjusting tube 2 into the mud and sand, and then the adjusting tube 2 is continued to be moved downward. After moving to a certain position, the telescopic tube 17 is pulled to drive the second adjusting tube 16 to move toward the end away from the adjusting tube 2. When the second adjusting tube 16 moves, it will drive the first adjusting tube 15 to move. When the first adjusting tube 15 moves, it will drive the pulling plate 14 to move, thereby moving the pulling block 9, and then the pulling block 9 is moved from After the bottom end of the adjusting tube 2 is removed and the pulling block 9 is removed, the bottom end of the adjusting tube 2 is inserted into the mud and sand, and then the mud and sand will enter the adjusting tube 2 and fit with the inner wall of the adjusting tube 2. Then the adjusting tube 2 is pulled upward, and the telescopic tube 17 is moved to drive the second adjusting tube 16 to move to the side close to the adjusting tube 2, so that the pulling block 9 is moved to the bottom end of the adjusting tube 2 again. At the same time, the magnetic block 12 will be magnetically connected to the blade 13, so that the pulling block 9 is fixed to the bottom end of the adjusting tube 2 to prevent it from moving downward and separating from the adjusting tube 2. The sealing block 11 can be used to improve the sealing of the bottom end of the adjusting tube 2, and then the adjusting tube 2 can be pulled out of the water. Therefore, the device When the scooping mechanism is taken out of the water, the scooping mechanism can be sealed to prevent the collected mud and sand from being dispersed by the water flow, thereby eliminating the need for personnel to sample the mud and sand multiple times to obtain the required sampling amount. The operation is simple and convenient for personnel to use. After the regulating tube 2 is taken out of the water, the mud and sand need to be taken out of the regulating tube 2 and then placed in the storage box 20 for storage. During the sampling process, personnel can place the mud and sand collected at different depths in different storage boxes 20 for storage according to the different marking blocks 21 set on the storage box 20. Finally, the threaded cover 23 is installed on the storage box 20, and the top of the storage box 20 is sealed with the sealing rod 24.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A sediment sampling device for soil and water conservation monitoring, comprising an adjusting rod (1), characterized in that: The bottom end of the adjusting rod (1) is movably connected to an adjusting tube (2), the surface of the adjusting tube (2) is fixedly connected to a connecting block (3), one side of the connecting block (3) is fixedly connected to a fixing ring (4), the inner wall of the fixing ring (4) is fixedly connected to a fixing spring (5), one end of the fixing spring (5) is fixedly connected to a pushing tube (6), one end of the pushing tube (6) is fixedly connected to a limiting block (7), the surfaces of the adjusting rod (1) and the adjusting tube (2) are both provided with limiting grooves (8) adapted to the limiting block (7), the bottom end of the adjusting tube (2) is movably connected to a pulling block (9), the top of the pulling block (9) is provided with a fixing groove (10), the interior of the fixing groove (10) is fixedly connected to a sealing block (11), the surface of the pulling block (9) is provided with a mounting groove, A magnetic block (12) is fixedly connected inside the installation groove, a blade (13) is magnetically connected to one side of the magnetic block (12), and the blade (13) is fixedly connected to the adjustment tube (2). A pulling plate (14) is fixedly connected to one side of the pulling block (9), and a first adjustment tube (15) is fixedly connected to one side of the pulling plate (14). The top of the first adjustment tube (15) is movably connected to the second adjustment tube (16), and the top of the second adjustment tube (16) is fixedly connected to a telescopic tube (17), and one end of the telescopic tube (17) is movably connected to a fixed connection tube (18). The adjustment tube (2) is fixedly connected to support tubes (19) all around, and one end of the support tube (19) is fixedly connected to a storage box (20), and a marking block (21) is fixedly connected to the surface of the storage box (20).

2. A sediment sampling device for soil and water conservation monitoring as claimed in claim 1, characterized in that: A mounting thread groove (22) is provided on the top of the storage box (20), and a mounting thread cover (23) is connected to the inner thread of the mounting thread groove (22).

3. A sediment sampling device for soil and water conservation monitoring as claimed in claim 2, characterized in that: A sealing rod (24) is fixedly connected to the inner top wall of the mounting threaded cover (23), and the surface of the sealing rod (24) is in contact with the inner wall of the storage box (20).

4. A sediment sampling device for soil and water conservation monitoring as claimed in claim 3, characterized in that: Both sides of the top of the mounting threaded cover (23) are fixedly connected with rotation auxiliary rods (25), and the surface of the rotation auxiliary rods (25) is provided with rotation friction patterns.

5. A sediment sampling device for soil and water conservation monitoring as claimed in claim 4, characterized in that: The top end of the adjusting rod (1) is fixedly connected to a pulling auxiliary rod (26), and the surface of the pulling auxiliary rod (26) is provided with pulling friction patterns.

6. A sediment sampling device for soil and water conservation monitoring as claimed in claim 5, characterized in that: The top end of the pulling auxiliary rod (26) is fixedly connected to a mounting round block (27), and the top of the mounting round block (27) is fixedly connected to an elastic wrist band (28).

7. A sediment sampling device for soil and water conservation monitoring as claimed in claim 6, characterized in that: One end of the push tube (6) is plugged with a push limit tube (29), and one end of the push limit tube (29) is fixedly connected to the inner wall of the fixing ring (4).

8. A sediment sampling device for soil and water conservation monitoring as claimed in claim 7, characterized in that: The pushing and limiting tube (29) is inserted into the interior of the fixing spring (5), and the surface of the pushing and limiting tube (29) is movably connected to the inner wall of the fixing spring (5).

9. A sediment sampling device for soil and water conservation monitoring as claimed in claim 7, characterized in that: A first threaded hole (30) is provided on the surface of each of the first adjusting tube (15) and the second adjusting tube (16), and a first threaded tube (31) is connected to the inner thread of the first threaded hole (30).

10. A sediment sampling device for soil and water conservation monitoring as claimed in claim 7, characterized in that: The surfaces of the telescopic tube (17) and the fixed connection tube (18) are both provided with a second threaded hole (32), the inner thread of the second threaded hole (32) is connected to a second threaded tube (33), and one end of each of the first threaded tube (31) and the second threaded tube (33) is fixedly connected to a mounting fixing rod (34).

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