Integrated visual constant head permeameter device

Abstract

The invention discloses an integrated visual constant head permeameter device, and relates to the technical field of constant head permeameters. Comprising a base, a supporting frame is fixedly installed on the base, a water supply barrel is fixedly installed on the supporting frame, a drainage pipe is fixedly communicated with the water supply barrel, and a permeation barrel is fixedly installed on the base and located on one side of the supporting frame; an auxiliary assembly is arranged on the outer side of the permeation cylinder, a sample is uniformly located in the permeation cylinder through the auxiliary assembly, the side end face of the permeation cylinder is fixedly communicated with three pressure measuring pipes at different positions, and a dial gauge is fixedly installed on the upper end face of the base; a measuring cylinder is fixedly mounted on the base and located on one side of the permeation cylinder, and the side end face of the permeation cylinder is fixedly communicated with a through pipe. Through mutual cooperation of all structures in the auxiliary assembly, the compaction effect of a sample in the permeation cylinder is improved, the precision and stability of an experiment are enhanced, and the use effect of the whole device is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of constant-head permeameters, and particularly to an integrated visual constant-head permeameter device. Background Art

[0002] At present, in the constant-head permeability test, a 70-type soil permeameter is basically used, which is manufactured by imitating the Marr permeameter and can be used to measure the permeability of sandy soil and cohesionless soil containing a small amount of gravel under a constant head. The common 70-type permeameter mainly consists of a water seepage component and a compaction component. The water seepage component is composed of a cylinder body, a water seepage plate, a scale plate, a piezometer tube, etc. Copper wire cloth is installed in the piezometer tube joint to prevent fine sand particles from flowing out with water during the test. The compaction component is equipped with a wooden hammer to compact the test sample.

[0003] In the prior art, a Chinese patent with the authorization announcement number CN205538585U discloses a constant-head soil permeameter. Before the test starts, a suitable metal filter is selected and embedded in the inner wall groove of the permeation cylinder. Before the test starts, the two bases of the compaction device are symmetrically arranged on both sides of the permeation cylinder, the vertical rod and the cross rod are connected, and the cross rod and the compaction hammer are connected with a graduated rope. During the preparation of the test sample, a soil sample with an appropriate thickness is paved, and according to the required compaction work, the height of the compaction hammer from the top surface of the soil sample is adjusted by turning the cross rod through the handle. After centering, the handle is released to make the compaction hammer freely fall to complete the compaction action, solving the problem that the existing wooden hammer compaction method is too rough and it is difficult to ensure the density and uniformity of the test sample.

[0004] In the above-described solution, the compaction hammer is raised by turning the cross rod through the handle, and the compaction hammer is made to compact the test sample in the permeation cylinder by using the principle of gravity. In this technical solution, the raised compaction hammer cannot ensure that it can vertically fall into the permeation cylinder, and the freely falling compaction hammer cannot adjust the depth of each compaction, so it is difficult to ensure the uniform compaction of each layer of the test sample. Especially in a deeper or thicker test sample, it may cause over-compaction or under-compaction in some parts. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an integrated visual constant-head permeameter device, which solves the problems mentioned in the above background art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: The integrated visual constant-head permeameter device includes a base, a support frame is fixedly installed on the base, a water supply bucket is fixedly installed on the support frame, a drain pipe is fixedly communicated with the water supply bucket, and a permeation cylinder is fixedly installed on the base and on one side of the support frame; An auxiliary component is provided on the outer side of the permeation cylinder, through which the specimen is evenly located inside the permeation cylinder. Three piezometers at different positions are fixedly communicated with the side end face of the permeation cylinder, and a scale is fixedly installed on the upper end face of the base; A graduated cylinder is fixedly installed on the base and on one side of the permeation cylinder. A through pipe is fixedly communicated with the side end face of the permeation cylinder, and an overflow pipe is fixedly communicated with the outer side face of the permeation cylinder; The auxiliary component includes a support plate fixedly installed on the base. A motor is fixedly installed on the support plate. A rotating disk is fixedly installed on the output shaft of the motor. An adjusting component is arranged on the rotating disk. An installation shaft is fixedly installed on the adjusting component, and a driving rod is rotatably installed on the installation shaft.

[0007] Preferably, a connecting frame is rotatably installed at one end of the driving rod away from the installation shaft. A connecting rod is fixedly installed on the lower end face of the connecting frame. A hammer plate is fixedly installed at the bottom end of the connecting rod. A limiting slide bar is fixedly installed on the side end face of the connecting frame. A T-shaped frame is fixedly installed on the support plate, and a limiting chute is opened on the inner side face of the T-shaped frame.

[0008] Preferably, one end of the limiting slide bar away from the connecting frame is slidably installed inside the limiting chute, and the position of the hammer plate is directly above the permeation cylinder.

[0009] Preferably, the adjusting component includes an installation groove opened on the rotating disk. An installation plate is fixedly installed inside the installation groove. An adjusting screw rod is rotatably installed on the installation plate. An adjusting handle is fixedly installed at the top end of the adjusting screw rod. A lifting screw block is movably installed on the adjusting screw rod. A limiting block is fixedly installed on the side end face of the lifting screw block, and a limiting groove is opened on the inner side face of the installation groove.

[0010] Preferably, the installation shaft is fixedly installed on the lifting screw block, and the limiting block is slidably installed inside the limiting groove.

[0011] Preferably, the auxiliary component further includes a U-shaped frame plate fixedly installed on the base. A knocking rod is slidably installed on the U-shaped frame plate. A limiting ring is fixedly installed on the knocking rod. A spring is fixedly connected to the limiting ring. A limiting plate is fixedly installed on the side end face of the limiting ring. A pushing rod is fixedly installed on the limiting slide bar, and an arc-shaped pushing block is fixedly installed on the side end face of the pushing rod.

[0012] Preferably, one end of the spring away from the limiting ring is fixedly connected to the U-shaped frame plate. The spring is located outside the knocking rod, and the arc-shaped pushing block is in sliding contact with the end of the knocking rod.

[0013] Preferably, a fixing rod is fixedly installed at the bottom end of the push rod. A positioning frame is fixedly installed at one end of the fixing rod away from the push rod. Auxiliary rotating rods are rotatably installed at both ends of the positioning frame. A U-shaped fixed plate is rotatably installed at one end of the auxiliary rotating rod away from the positioning frame. Vertical plates arranged symmetrically are fixedly installed on the base. A positioning rod is fixedly installed on the vertical plate. A knocking head is fixedly installed on the U-shaped fixed plate.

[0014] Preferably, the auxiliary rotating rod is arranged obliquely, and the U-shaped fixed plate is slidably installed on the positioning rod.

[0015] The present invention provides an integrated visual constant head permeameter device. Compared with the prior art, it has the following beneficial effects: 1. In the present invention, the sample is placed inside the permeation cylinder. Then, the motor drives the rotating disc to rotate. The mounting shaft on the rotating disc rotates around the rotating disc. The driving rod is driven to rotate through the mounting shaft. By the cooperation of the driving rod and the connecting frame, and the limitation of the limiting slide rod and the limiting chute, the connecting rod on the connecting frame drives the hammer head plate to compact the sample in the permeation cylinder, ensuring that the sample is in a dense state. By continuous compaction, the voids in the sample can be reduced, the density of the sample can be increased, and the accuracy and stability of the experimental results can be ensured. 2. In the present invention, when it is necessary to adjust the compaction density of the sample, the adjusting handle is rotated to drive the adjusting screw rod to rotate. The lifting screw block on the adjusting screw rod slides in a limited manner through the limiting block in the limiting groove, thereby adjusting the position of the mounting shaft on the rotating disc, and then adjusting the position of the driving rod on the mounting shaft, so as to realize the position adjustment of the hammer head plate, ensure that the sample obtains a suitable compaction effect. At the same time, by adjusting the position of the hammer head plate, it is also convenient to compact the samples at different positions in the permeation cylinder, effectively improving the use effect of the device. 3. In the present invention, when the limiting slide rod moves up and down, the push rod on the limiting slide rod drives the arc-shaped push block to move synchronously. By the cooperation of the arc-shaped push block and the knocking rod, and the reaction force of the spring on the knocking rod and the cooperation of the limiting plate, it is ensured that the knocking rod can knock on the permeation cylinder. The vibration force generated by the knocking makes the sample in the permeation cylinder more uniform and compact, ensuring the accuracy of the experimental results. 4. In the present invention, when the push rod moves up and down, the positioning frame is driven to move synchronously through the fixing rod. The auxiliary rotating rod on the positioning frame makes the knocking head on the U-shaped fixed plate knock on the permeation cylinder through the U-shaped fixed plate and the cooperation between the U-shaped fixed plate and the positioning rod. By using the knocking head to knock on different positions of the permeation cylinder on the basis of the knocking rod, the uniform compaction effect of the sample in the permeation cylinder is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic structural diagram of the penetration cylinder in the present invention; Figure 3 Schematic structural diagram of the auxiliary component in the present invention; Figure 4 Schematic structural diagram of the rotating disk in the present invention; Figure 5 is Figure 4 Enlarged view of part A in Figure 6 Schematic structural diagram of the U-shaped support plate in the present invention; Figure 7 is Figure 6 Enlarged view of part B in Figure 8 Schematic structural diagram of the U-shaped fixed plate in the present invention.

[0017] In the figure: 1, base; 2, support frame; 3, water supply bucket; 4, drain pipe; 5, penetration cylinder; 6, piezometric tube; 7, scale; 8, measuring cylinder; 9, through pipe; 10, overflow pipe; 11, support plate; 12, motor; 13, rotating disk; 14, mounting shaft; 15, driving rod; 16, connecting frame; 17, connecting rod; 18, hammer head plate; 19, limiting slide bar; 20, T-shaped frame; 21, limiting chute; 22, mounting groove; 23, mounting plate; 24, adjusting screw rod; 25, adjusting handle; 26, lifting screw block; 27, limiting block; 28, limiting groove; 29, U-shaped support plate; 30, knocking rod; 31, limiting ring; 32, spring; 33, limiting plate; 34, pushing rod; 35, arc-shaped pushing block; 36, fixed rod; 37, positioning frame; 38, auxiliary rotating rod; 39, U-shaped fixed plate; 40, vertical plate; 41, positioning rod; 42, knocking head. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 - 8, the present invention is an integrated visual constant head permeameter device, including a base 1, a support frame 2 is fixedly installed on the base 1, a water supply bucket 3 is fixedly installed on the support frame 2, a drain pipe 4 is fixedly connected to the water supply bucket 3, a permeation cylinder 5 is fixedly installed on the base 1 and on one side of the support frame 2, an auxiliary component is arranged outside the permeation cylinder 5, and the sample is evenly placed inside the permeation cylinder 5 through the auxiliary component. Three piezometers 6 at different positions are fixedly connected to the side end face of the permeation cylinder 5, a scale 7 is fixedly installed on the upper end face of the base 1, a graduated cylinder 8 is fixedly installed on the base 1 and on one side of the permeation cylinder 5, a through pipe 9 is fixedly connected to the side end face of the permeation cylinder 5, and an overflow pipe 10 is fixedly connected to the outer side face of the permeation cylinder 5. Among them, the permeation cylinder 5 is made of a transparent material. One end of the drain pipe 4 far away from the water supply bucket 3 is fixedly connected with a sealing cover, and the permeation cylinder 5 can be easily closed through the sealing cover. At the same time, valves are arranged on the drain pipe 4 and the through pipe 9. One end of the overflow pipe 10 far away from the permeation cylinder 5 is fixedly connected with a waste water bucket. Since the structures not described above are all well-known technologies to those skilled in the art, no specific elaboration will be made here.

[0020] The auxiliary component includes a support plate 11 fixedly installed on the base 1, a motor 12 is fixedly installed on the support plate 11, a rotating disk 13 is fixedly installed on the output shaft of the motor 12, an adjusting component is arranged on the rotating disk 13, a mounting shaft 14 is fixedly installed on the adjusting component, a driving rod 15 is rotatably installed on the mounting shaft 14, a connecting frame 16 is rotatably installed at one end of the driving rod 15 far away from the mounting shaft 14, a connecting rod 17 is fixedly installed on the lower end face of the connecting frame 16, a hammer plate 18 is fixedly installed at the bottom end of the connecting rod 17, a limiting slide bar 19 is fixedly installed on the side end face of the connecting frame 16, a T-shaped frame 20 is fixedly installed on the support plate 11, a limiting chute 21 is opened on the inner side face of the T-shaped frame 20, and one end of the limiting slide bar 19 far away from the connecting frame 16 is slidably installed inside the limiting chute 21. The position of the hammer plate 18 is directly above the permeation cylinder 5. Among them, the power source of the motor 12 is installed on the support plate 11 to ensure that the motor 12 can work normally.

[0021] In this embodiment, the sample is placed inside the permeation cylinder 5, and then the motor 12 is driven to drive the rotating disk 13 to rotate. The mounting shaft 14 on the rotating disk 13 will rotate around the rotating disk 13 as the center. The driving rod 15 is driven to rotate through the mounting shaft 14. By using the cooperation between the driving rod 15 and the connecting frame 16, and the limitation of the limiting slide bar 19 and the limiting chute 21, the connecting rod 17 on the connecting frame 16 is used to drive the hammer plate 18 to compact the sample inside the permeation cylinder 5 to ensure that the sample is in a dense state. By continuously compacting, the voids in the sample can be reduced, the density of the sample can be improved, and the accuracy and stability of the experimental results can be ensured.

[0022] The adjusting assembly includes an installation groove 22 formed in the rotating disk 13. An installation plate 23 is fixedly installed inside the installation groove 22. An adjusting screw rod 24 is rotatably installed on the installation plate 23. An adjusting handle 25 is fixedly installed at the top end of the adjusting screw rod 24. A lifting screw block 26 is movably installed on the adjusting screw rod 24. A limiting block 27 is fixedly installed on the side end face of the lifting screw block 26. A limiting groove 28 is formed in the inner side face of the installation groove 22. The installation shaft 14 is fixedly installed on the lifting screw block 26. The limiting block 27 is slidably installed inside the limiting groove 28. An anti-reverse mechanism is installed on the adjusting screw rod 24. Since the anti-reverse mechanism is a well-known technology to those skilled in the art, no specific description is given here. The lifting screw block 26 and the limiting block 27 are integrally processed.

[0023] In this embodiment, when it is necessary to adjust the density of the specimen compaction, the adjusting handle 25 is driven to drive the adjusting screw rod 24 to rotate. The lifting screw block 26 on the adjusting screw rod 24 will slide in a limited manner through the limiting block 27 in the limiting groove 28, so as to adjust the position of the installation shaft 14 on the rotating disk 13, and then adjust the position of the driving rod 15 on the installation shaft 14, so as to realize the position adjustment of the hammer head plate 18, ensure that the specimen obtains a suitable compaction effect. At the same time, by adjusting the position of the hammer head plate 18, it is also convenient to compact the specimens at different positions in the permeation cylinder 5, effectively improving the use effect of the device.

[0024] The auxiliary assembly further includes a U-shaped frame plate 29 fixedly installed on the base 1. A knocking rod 30 is slidably installed on the U-shaped frame plate 29. A limiting ring 31 is fixedly installed on the knocking rod 30. A spring 32 is fixedly connected to the limiting ring 31. A limiting plate 33 is fixedly installed on the side end face of the limiting ring 31. A pushing rod 34 is fixedly installed on the limiting sliding rod 19. An arc-shaped pushing block 35 is fixedly installed on the side end face of the pushing rod 34. One end of the spring 32 away from the limiting ring 31 is fixedly connected to the U-shaped frame plate 29. The spring 32 is located outside the knocking rod 30. The arc-shaped pushing block 35 is in sliding contact with the end of the knocking rod 30. The pushing rod 34 is located inside the limiting sliding groove 21, and the pushing rod 34 is slidably installed with the limiting sliding groove 21. By sliding the pushing rod 34 in the limiting sliding groove 21, the stability of the pushing rod 34 during lifting is ensured. The position of the knocking rod 30 is positioned by using the limiting plate 33. The pushing rod 34 and the arc-shaped pushing block 35 are integrally processed.

[0025] In this embodiment, when the limiting sliding rod 19 moves up and down, the pushing rod 34 on the limiting sliding rod 19 will drive the arc-shaped pushing block 35 to move synchronously. By using the cooperation between the arc-shaped pushing block 35 and the knocking rod 30, the reaction force of the spring 32 on the knocking rod 30 and the cooperation of the limiting plate 33, it is ensured that the knocking rod 30 can knock the permeation cylinder 5. The vibration force generated by the knocking makes the specimens in the permeation cylinder 5 more uniformly compact, ensuring the accuracy of the experimental results.

[0026] A fixed rod 36 is fixedly installed at the bottom end of the push rod 34. A positioning frame 37 is fixedly installed at one end of the fixed rod 36 away from the push rod 34. Auxiliary rotating rods 38 are rotatably installed at both ends of the positioning frame 37. An end of the auxiliary rotating rod 38 away from the positioning frame 37 is rotatably installed with a U-shaped fixed plate 39. Vertical plates 40 arranged symmetrically are fixedly installed on the base 1. A positioning rod 41 is fixedly installed on the vertical plate 40. A knocking head 42 is fixedly installed on the U-shaped fixed plate 39. The auxiliary rotating rod 38 is arranged obliquely. The U-shaped fixed plate 39 is slidably installed on the positioning rod 41.

[0027] In this embodiment, when the push rod 34 moves up and down, it will drive the positioning frame 37 to move synchronously through the fixed rod 36. The auxiliary rotating rod 38 on the positioning frame 37 will, through the U-shaped fixed plate 39 and the cooperation between the U-shaped fixed plate 39 and the positioning rod 41, cause the knocking head 42 on the U-shaped fixed plate 39 to knock on the permeation cylinder 5. By using the knocking head 42 to knock on different positions of the permeation cylinder 5 on the basis of the knocking rod 30, the uniform compaction effect of the sample in the permeation cylinder 5 is further improved.

[0028] Working principle: When in use, the sample is loaded into the permeation cylinder 5, and then the motor 12 drives the rotating disk 13 to rotate. The mounting shaft 14 on the rotating disk 13 will rotate around the rotating disk 13 as the center. The driving rod 15 is driven to rotate through the mounting shaft 14. By using the cooperation between the driving rod 15 and the connecting frame 16, and the limitation of the limiting slide rod 19 and the limiting chute 21, the hammer head plate 18 on the connecting frame 16 is used to compact the sample in the permeation cylinder 5 to ensure that the sample is in a dense state; When the limiting slide rod 19 moves up and down, the push rod 34 on the limiting slide rod 19 will drive the arc-shaped push block 35 to move synchronously. By using the cooperation between the arc-shaped push block 35 and the knocking rod 30, as well as the reaction force of the spring 32 on the knocking rod 30 and the cooperation of the limiting plate 33, it is ensured that the knocking rod 30 can knock on the permeation cylinder 5. When the push rod 34 moves up and down, it will drive the positioning frame 37 to move synchronously through the fixed rod 36. The auxiliary rotating rod 38 on the positioning frame 37 will, through the U-shaped fixed plate 39 and the cooperation between the U-shaped fixed plate 39 and the positioning rod 41, cause the knocking head 42 on the U-shaped fixed plate 39 to knock on the permeation cylinder 5. By using the knocking head 42 to knock on different positions of the permeation cylinder 5 on the basis of the knocking rod 30, the uniform compaction effect of the sample in the permeation cylinder 5 is improved; When it is necessary to adjust the compaction density of the specimen, the adjusting screw rod 24 is rotated by driving the handle 25. The lifting screw block 26 on the adjusting screw rod 24 will slide within the limit of the limit groove 28 through the limit block 27, thereby adjusting the position of the mounting shaft 14 on the rotating disk 13, and then adjusting the position of the driving rod 15 on the mounting shaft 14, so as to realize the position adjustment of the hammer head plate 18, ensure that the specimen obtains a proper compaction effect. At the same time, by adjusting the position of the hammer head plate 18, it is also convenient to compact the specimens at different positions in the permeation cylinder 5; After the specimen is loaded, the device can be operated by using the conventional experimental steps of the constant head permeameter in the prior art to complete the whole experiment.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An integrated visual constant head permeameter device, comprising a base (1), characterized in that: A support frame (2) is fixedly installed on the base (1), a water supply bucket (3) is fixedly installed on the support frame (2), a drain pipe (4) is fixedly communicated with the water supply bucket (3), and a permeation cylinder (5) is fixedly installed on the base (1) and on one side of the support frame (2); An auxiliary component is arranged on the outer side of the permeation cylinder (5), so that the specimen is evenly located inside the permeation cylinder (5) through the auxiliary component. Three piezometers (6) at different positions are fixedly communicated with the side end face of the permeation cylinder (5), and a scale (7) is fixedly installed on the upper end face of the base (1); A measuring cylinder (8) is fixedly installed on the base (1) and on one side of the permeation cylinder (5), a through pipe (9) is fixedly communicated with the side end face of the permeation cylinder (5), and an overflow pipe (10) is fixedly communicated with the outer side face of the permeation cylinder (5); The auxiliary component includes a support plate (11) fixedly installed on the base (1), a motor (12) is fixedly installed on the support plate (11), a rotating disk (13) is fixedly installed on the output shaft of the motor (12), an adjusting component is arranged on the rotating disk (13), a mounting shaft (14) is fixedly installed on the adjusting component, and a driving rod (15) is rotatably installed on the mounting shaft (14).

2. The integrated visual constant head permeameter device according to claim 1, characterized in that: One end of the driving rod (15) far away from the mounting shaft (14) is rotatably installed with a connecting frame (16), a connecting rod (17) is fixedly installed on the lower end face of the connecting frame (16), a hammer head plate (18) is fixedly installed at the bottom end of the connecting rod (17), a limiting slide bar (19) is fixedly installed on the side end face of the connecting frame (16), a T-shaped frame (20) is fixedly installed on the support plate (11), and a limiting chute (21) is opened on the inner side face of the T-shaped frame (20).

3. The integrated visual constant-head permeameter device according to claim 2, wherein: One end of the limiting slide bar (19) far away from the connecting frame (16) is slidably installed inside the limiting chute (21), and the position of the hammer head plate (18) is directly above the permeation cylinder (5).

4. The integrated visual constant-head permeameter device according to claim 1, wherein: The adjusting component includes a mounting groove (22) opened on the rotating disk (13), a mounting plate (23) is fixedly installed inside the mounting groove (22), an adjusting screw rod (24) is rotatably installed on the mounting plate (23), an adjusting handle (25) is fixedly installed at the top end of the adjusting screw rod (24), a lifting screw block (26) is movably installed on the adjusting screw rod (24), a limiting block (27) is fixedly installed on the side end face of the lifting screw block (26), and a limiting groove (28) is opened on the inner side face of the mounting groove (22).

5. The integrated visual constant head permeameter device according to claim 4, characterized in that: The mounting shaft (14) is fixedly installed on the lifting screw block (26), and the limiting block (27) is slidably installed inside the limiting groove (28).

6. The integrated visual constant head permeameter device according to claim 2, wherein: The auxiliary component further includes a U-shaped frame plate (29) fixedly installed on the base (1). A knocking rod (30) is slidably installed on the U-shaped frame plate (29). A limit ring (31) is fixedly installed on the knocking rod (30). A spring (32) is fixedly connected to the limit ring (31). A limit plate (33) is fixedly installed on the side end face of the limit ring (31). A push rod (34) is fixedly installed on the limit sliding rod (19). An arc-shaped push block (35) is fixedly installed on the side end face of the push rod (34).

7. The integrated visual constant head permeameter device according to claim 6, characterized in that: One end of the spring (32) far away from the limit ring (31) is fixedly connected to the U-shaped frame plate (29). The spring (32) is located outside the knocking rod (30). The arc-shaped push block (35) is in sliding contact with the end of the knocking rod (30).

8. The integrated visual constant head permeameter device according to claim 6, characterized in that: A fixed rod (36) is fixedly installed at the bottom end of the push rod (34). A positioning frame (37) is fixedly installed at one end of the fixed rod (36) far away from the push rod (34). Auxiliary rotating rods (38) are rotatably installed at both ends of the positioning frame (37). A U-shaped fixed plate (39) is rotatably installed at one end of the auxiliary rotating rod (38) far away from the positioning frame (37). Symmetrically arranged vertical plates (40) are fixedly installed on the base (1). A positioning rod (41) is fixedly installed on the vertical plate (40). A knocking head (42) is fixedly installed on the U-shaped fixed plate (39).

9. The integrated visual constant-head permeameter device according to claim 8, wherein: The auxiliary rotating rod (38) is arranged obliquely. The U-shaped fixed plate (39) is slidably installed on the positioning rod (41).

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