An automatic water injection test device for a cement-soil impervious wall

Abstract

The present invention relates to the technical field of cement soil anti-seepage wall detection, and specifically, to an automatic water injection test equipment for cement soil anti-seepage wall. It comprises a mobile body and a water injection device arranged at both ends of the mobile body, a plurality of cylinders are arranged between the two side clamps arranged at the bottom of the mobile body, a water level detection device for detecting the water level is arranged at the middle of the top of the cylinder, a windproof protection system is arranged inside the cylinder, the protection system comprises a first baffle and a second baffle slidably connected to the first baffle, the first baffle is slidably connected to the cylinder, and lifting parts are arranged on both sides of the second baffle, and the lifting parts are used to drive the first baffle and the second baffle to be lifted as a whole. When detecting the water level in the hole, the inclined push rod is driven inward by the clamp to move, so that the first baffle and the second baffle are lifted upward, and the first baffle wraps the entire water level detection device, thereby preventing the influence of external airflow and other factors, causing the column and the float to shake, and affecting the stability of the float.

Description

Technical Field

[0001] The present invention relates to the technical field of cement-soil cutoff wall detection, and more specifically, to an automatic water injection test device for a cement-soil cutoff wall. Background Art

[0002] A cement-soil cutoff wall is a continuous underground wall built in a loose permeable layer or an earth-rock dam for seepage prevention. The wall extends along the dam body, continuously drills holes in the loose permeable foundation, uses slurry to support the wall, and pours concrete into the holes to build a wall-shaped seepage prevention structure. It is one of the main measures for vertical seepage prevention of hydraulic structures such as sluices and dams in loose permeable foundations. The cutoff wall is built in sections. After pouring concrete into a circular hole or a grooved hole, a wall section is formed, and many wall sections are connected into a complete wall.

[0003] After the cement-soil cutoff wall is built, it needs to be subjected to a permeability test to detect whether it is qualified. The test process is generally as follows: After using a drilling machine to drill a number of circular holes at intervals on the wall of the cement-soil cutoff wall, a certain amount of clear water is injected, and the permeability coefficient of the soil body in the water seepage section of the hole wall is detected according to the injected water volume at different times or the drop in water level at different times.

[0004] Regarding the automatic water injection test device, there are many existing technologies, for example:

[0005] Chinese Patent Publication No. CN116642816A discloses an automatic water injection test device for a cement-soil cutoff wall. The automatic water injection test device for the cement-soil cutoff wall includes a vehicle body and moving wheels rotatably connected to the four corners of the lower end surface of the vehicle body through wheel frames. An installation groove is formed on the lower end surface of the vehicle body. A positioning mechanism is installed on the upper groove wall of the installation groove. A fork moving mechanism is installed below the positioning mechanism. A number of water level detection mechanisms are installed inside the fork moving mechanism. The water level detection mechanism includes an oval scale disk slidably arranged below the positioning mechanism through a sliding component and corresponding to a balance rod. A limiting component for limiting and locking the balance rod is installed inside the cylinder. In the present invention, when the fork plate is inserted outside the cylinder, it cooperates with the arc-shaped pressure receiving block to drive the clamping piece to move closer to the balance rod, clamping the balance rod, avoiding the situation that the balance rod shakes due to being blown by the wind when reading the test results, and improving the accuracy of the test results.

[0006] It can be seen from this that when conducting a water injection test on a cement-soil cut-off wall, in order to avoid the influence of external air flow on the detection, usually at the detection time point, the two-sided clamping pieces are used to squeeze inward, so that under the action of the clamping pieces, the balance rod is clamped and fixed, so as to avoid the situation that the balance rod is blown by the wind and shakes when reading the detection result. However, during the detection process, the balance rod is always affected by the wind force factor. If the balance rod shakes at the detection time point and the two-sided clamping pieces clamp the balance rod, this will cause the balance rod to be inconsistent with the actual inclination angle, thus affecting the accuracy of the detection. Summary of the Invention

[0007] The purpose of the present invention is to provide an automatic water injection test device for a cement-soil cut-off wall to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention aims to provide an automatic water injection test device for a cement-soil cut-off wall, including a moving vehicle body and water injection devices arranged at both ends of the moving vehicle body. There are multiple cylinders between the two-sided clamping plates arranged at the bottom of the moving vehicle body. A water level detection device for detecting the water level is arranged in the middle of the top of the cylinder. A protection system for wind protection is arranged inside the cylinder. The protection system includes a first baffle and a second baffle slidably connected to the first baffle. The first baffle is slidably connected to the cylinder. Lifting parts are arranged on both sides of the second baffle, and the lifting parts are used to drive the overall height of the first baffle and the second baffle to rise.

[0009] Moving limit parts are symmetrically arranged inside the cylinder. The first baffle drives the moving limit parts to extend outwards to limit the shaking of the water level detection device, and the moved moving limit parts cooperate with the second baffle to block the air flow.

[0010] As a further improvement of the technical solution, the water level detection device is composed of two-sided floating balls, a vertical plate and a turning plate. The floating balls are rotationally connected to the turning plate through columns. The floating balls are symmetrically distributed. The middle of the turning plate is rotationally connected to the vertical plate. The vertical plate is slidably connected to a bracket fixed on the inner wall of the cylinder in the vertical direction.

[0011] As a further improvement of the technical solution, the moving limit part includes an outer limit plate and an inner limit plate. The inner limit plate is slidably connected inside the outer limit plate. An auxiliary block rotatably connected to the end of the inner limit plate is threadedly connected to an arc-shaped lead screw. The arc-shaped lead screw is rotationally connected to a support block fixed on the inner side of the cylinder.

[0012] As a further improvement of the technical solution, a roller is fixedly connected to the middle of the arc-shaped lead screw. When the first baffle moves down, the roller drives the auxiliary block to rotate by using the friction force between the roller and the inner fitting surface of the first baffle, so that the two inner limit plates drive the outer limit plate to move towards the column.

[0013] As a further improvement of the technical solution, an inner cylinder of a telescopic rod is fixedly connected to the auxiliary block, and an outer cylinder of the telescopic rod is fixedly connected to a third protective plate beside it. The third protective plate is used to slide along the second baffle on both sides when the auxiliary block moves outwards.

[0014] As a further improvement of the technical solution, sliding grooves are symmetrically formed on the outer arc surface of the third protective plate, and sliding rails connected by the sliding grooves are fixed on one side of the inner arc surface of the second baffle.

[0015] As a further improvement of the technical solution, the lifting part includes two inclined ejector rods on both sides. One end of the inclined ejector rod is rotatably connected to the second baffle, and the two ends of the rotating shaft connected to the other end are fixedly connected to fixed blocks, and the fixed blocks are slidably connected to outer support plates fixed to the cylinder.

[0016] As a further improvement of the technical solution, a cavity is formed in the outer support plate, and one end of a first spring arranged in the cavity is fixedly connected to the fixed block, and the other end is fixedly connected to a stop block, and the bottom of the stop block protrudes outwards.

[0017] As a further improvement of the technical solution, the second baffle is semi-circular arc-shaped, and a plurality of vertical rods are fixedly connected to the bottom of the second baffle in an array manner. The vertical rods are slidably connected to the first baffle, and a second spring is sleeved outside the vertical rods.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In the automatic water injection test equipment for the cement-soil impervious wall, when detecting the water level in the detection hole, the inclined ejector rod is driven to move inwards by the clamping plate, so that the first baffle and the second baffle are lifted upwards. The first baffle wraps the entire water level detection device, thereby preventing the influence of external air flow and other factors, resulting in the shaking of the column and the floating ball, and affecting the stability of the floating ball.

[0020] 2. In the automatic water injection test equipment for the cement-soil impervious wall, after the detection is completed, when the cylinder moves upwards, at this time, the first baffle moves downwards to drive the roller to rotate, so that the two auxiliary blocks move along the arc-shaped lead screw, and the inner limiting plate pushes the outer limiting plate towards the column connecting the floating ball, so that the two columns gradually move inwards until the column contacts the bracket, thereby avoiding the situation of shaking affected by the wind, facilitating the observation of the detection result, and improving the accuracy of the detection result.

[0021] 3. In the automatic water injection test equipment for the cement-soil impervious wall, during the process of the first baffle moving downwards, the second baffle is always in the extended state, and protects the turning plate and the column, and the two third protective plates extend outwards, thereby increasing the windward area, reducing the influence of external air flow on the observation, and improving the accuracy of the detection result. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2 is the sectional structural schematic diagram of the moving vehicle body of the present invention;

[0024] Figure 3 is the top view of the internal structure of the cylinder section of the present invention;

[0025] Figure 4 is of the present invention Figure 3 the enlarged structural schematic diagram at position A in;

[0026] Figure 5 is the front view of the internal structure of the cylinder, the first baffle and the second baffle section of the present invention;

[0027] Figure 6 is the right view of the internal structure of the cylinder, the first baffle and the second baffle section of the present invention;

[0028] Figure 7 is the top view of the moving limit part and the floating ball structure of the present invention;

[0029] Figure 8 is of the present invention Figure 6 the enlarged structural schematic diagram at position B in;

[0030] Figure 9 is the exploded structural schematic diagram of the cylinder, the first baffle and the second baffle section of the present invention;

[0031] Figure 10 is the exploded structural schematic diagram of the telescopic rod, the third protection plate and the second baffle of the present invention.

[0032] The meanings of each label in the figure are as follows:

[0033] 100, moving vehicle body; 101, cylinder; 102, outer support plate; 103, first baffle; 104, second baffle; 105, second spring; 106, vertical rod; 107, slide rail;

[0034] 110, water injection device;

[0035] 120, water level detection device; 121, floating ball; 122, vertical plate; 123, flip plate;

[0036] 200, moving limit part; 201, outer limit plate; 202, inner limit plate; 203, third protection plate; 204, auxiliary block; 205, telescopic rod; 206, chute;

[0037] 210, arc lead screw; 211, roller;

[0038] 300. Lifting part; 301. Tilted ejector rod; 302. Fixed block; 303. First spring; 304. Stopper. Detailed implementation mode

[0039] The following will clearly and completely describe the technical solutions in the present invention in conjunction with the accompanying drawings in 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 in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0042] As Figure 1 , Figure 2 , Figure 3 and Figure 5 shown, a cement-soil cutoff wall automatic water injection test device is provided, including a mobile vehicle body 100 and water injection devices 110 arranged at both ends of the mobile vehicle body 100. A plurality of cylinders 101 are provided between the two clamping plates arranged at the bottom of the mobile vehicle body 100, and a water level detection device 120 for detecting the water level is arranged in the middle of the top of the cylinder 101. When detecting the water level in a pre-opened hole, first use the telescopic device (such as a hydraulic rod, a hydraulic rod connecting plate body, and the plate body is slidably connected to the two clamping plates, which is the prior art and will not be elaborated here) connecting the clamping plates at the bottom of the mobile vehicle body 100 to place the cylinder 101 in the hole, and then use the water injection device 110 to inject water into the hole so that the cylinder 101 is also filled with water for subsequent water level detection.

[0043] Secondly, to ensure the smooth progress of the water level detection by the water level detection device 120, a protection system for wind shielding is provided inside the cylinder 101. The protection system includes a first baffle 103 and a second baffle 104 slidably connected to the first baffle 103. The first baffle 103 is slidably connected to the cylinder 101. Lifting parts 300 are provided on both sides of the second baffle 104. During the detection, the lifting parts 300 are used to drive the overall height of the first baffle 103 and the second baffle 104 to rise, so as to block the external air flow, thereby ensuring the stability of the water level detection device 120 during the detection.

[0044] Next, moving limit parts 200 are symmetrically arranged on the inner side of the cylinder 101. The first baffle 103 drives the moving limit parts 200 to extend outwards to limit the swaying of the water level detection device 120. At the same time, the moved moving limit parts 200 cooperate with the second baffle 104 to block the air flow, which is convenient for observing the detection result and improves the accuracy of the detection result.

[0045] Therefore, on the basis of the above structure, combined with Figure 6 The structure of the water level detection device 120 is further disclosed. The water level detection device 120 is composed of two side floating balls 121, a vertical plate 122 and a flipping plate 123. The floating balls 121 are rotationally connected to the flipping plate 123 through columns. The floating balls 121 are symmetrically distributed. The middle part of the flipping plate 123 is rotationally connected to the vertical plate 122. The vertical plate 122 is slidably connected to a bracket fixed on the inner wall of the cylinder 101 in the vertical direction. After the cylinder 101 is placed in the hole, by injecting water into the hole, the floating balls 121 float upwards. After the detection is completed, the final detection result can be obtained by observing the scale line on the vertical plate 122.

[0046] During the detection process, the flow of the air flow will cause the entire water level detection device 120 to sway. Although the water level detection device 120 can return to stability after a period of time, this will increase the detection time and affect the detection efficiency. Therefore, the first baffle 103 slidably connected to the cylinder 101 is lifted upwards by the lifting parts 300, and the first baffle 103 blocks the external air flow, thereby ensuring the stability of the detection.

[0047] Next, combined with Figure 4It is shown that the specific structure of the lifting part 300 is disclosed. The lifting part 300 includes two inclined ejector rods 301 on both sides. One end of the inclined ejector rod 301 is rotatably connected to the second baffle 104, and both ends of the rotating shaft connected to the other end are fixedly connected with fixing blocks 302. The fixing blocks 302 are slidably connected to the outer support plate 102 fixed to the cylinder 101. On the other hand, a cavity is formed in the outer support plate 102, and one end of the first spring 303 arranged in the cavity is fixedly connected to the fixing block 302, and the other end is fixedly connected to the stopper 304, and the bottom of the stopper 304 protrudes outward. In this way, during the movement of the clamping plate, the clamping plate drives the stopper 304 to move together, so that the first spring 303 pulls the fixing block 302 to push the inclined ejector rod 301 outwards. Under the action of the two inclined ejector rods 301 on both sides, the first baffle 103 is lifted upwards until the first baffle 103 blocks the entire water level detection device 120 to block the external air flow.

[0048] It should be noted that during the upward movement of the first baffle 103, the second baffle 104 first contacts the bottom of the moving vehicle body 100. As the first baffle 103 continues to move upwards, the second baffle 104 gradually retracts into the first baffle 103.

[0049] Furthermore, after a period of time, the water in the hole penetrates to the outside. At this time, the inclined ejector rod 301 moves in the reverse direction to lower the height of the first baffle 103. During this process, because the second baffle 104 is semi-circular arc-shaped, a plurality of vertical rods 106 are fixedly connected to the bottom of the second baffle 104 in an array manner. The vertical rods 106 are slidably connected to the first baffle 103, and a second spring 105 is sleeved outside the vertical rods 106. Thus, when the second baffle 104 gradually retracts into the first baffle 103, the second spring 105 is compressed and the elastic potential energy increases. As the first baffle 103 moves downwards, the second baffle 104 still contacts the bottom of the moving vehicle body 100 at this time, and after the elastic potential energy of the second spring 105 is completely released, the second baffle 104 will move downwards under the action of gravity.

[0050] Therefore, the second baffle 104 fits with the bottom of the moving vehicle body 100, which can prevent the external air flow from blowing towards the water level detection device 120, thereby ensuring the stability of the water level detection device 120 and improving the accuracy of the observation and detection results.

[0051] In order to ensure the smooth progress of the observation, the second baffle 104 is set to be semi-circular, so that half of the second baffle 104 is vacant. In this way, as the first baffle 103 moves downwards, the result of the detection can be observed through the observation window in front of the moving vehicle body 100.

[0052] The above is Embodiment 1 of the present invention. Considering that when observing the detection result, the other half of the second baffle 104 is vacant, which causes the other side of the water level detection device 120 (i.e., the side without the protection of the second baffle 104) to be affected by the external air flow. In order to ensure the stability of the water level detection device 120 during observation, the following is combined with Figures 7 - 10 Embodiment 2 of the present invention is shown. Another implementation manner for maintaining the stability of the water level detection device 120 is disclosed in this embodiment. Please refer to the above for illustration:

[0053] In this embodiment, the moving limiting part 200 includes an outer limiting plate 201 and an inner limiting plate 202. The inner limiting plate 202 is slidably connected inside the outer limiting plate 201. An auxiliary block 204 rotatably connected to the end of the inner limiting plate 202 is threadedly connected to an arc-shaped lead screw 210. The arc-shaped lead screw 210 is rotatably connected to a support block fixed inside the cylinder 101. In addition, a roller 211 is fixedly connected to the middle of the arc-shaped lead screw 210. When the first baffle 103 moves downward, the roller 211 drives the auxiliary block 204 to rotate by using the friction force between the roller 211 and the inner fitting surface of the first baffle 103, and the inner limiting plates 202 on both sides drive the outer limiting plate 201 to move towards the column until the inner limiting plate 202 abuts the column against the bracket.

[0054] It should be noted that: the inner fitting surface between the roller 211 and the first baffle 103 refers to the inner side of the arc-shaped surface of the first baffle 103. When the first baffle 103 moves upward, the first baffle 103 drives the roller 211 to rotate in the opposite direction, so that the outer limiting plate 201 moves away from the column for re-performing the penetration detection operation.

[0055] Also, since an inner cylinder of a telescopic rod 205 is fixedly connected to the auxiliary block 204, and the outer cylinder of the telescopic rod 205 is fixedly connected to a third protection plate 203 beside it. The third protection plate 203 is used to slide along the second baffle 104 on both sides when the auxiliary block 204 moves outward. And, sliding grooves 206 are symmetrically formed on the outer arc surface of the third protection plate 203. The slide rails 107 slidably connected to the sliding grooves 206 are fixed on one side of the inner arc surface of the second baffle 104. In this way, while the outer limiting plate 201 limits the column, the auxiliary block 204 drives the telescopic rod 205 to expand outward, and the third protection plates 203 on both sides slide along the inner side of the first baffle 103, so as to increase the wind shielding area while ensuring observation, thereby reducing the influence of the external air flow on the water level detection device 120 and improving the accuracy of the observation result.

[0056] During the outward expansion of the third protective plate 203, the slide rail 107 slides in the chute 206 to restrict the third protective plate 203, preventing the frictional force between the arc-shaped lead screw 210 and the auxiliary block 204 from causing the auxiliary block 204 to rotate together with the arc-shaped lead screw 210 under the rotation of the arc-shaped lead screw 210, resulting in the inclination of the auxiliary block 204 and affecting the restriction of the upright column.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic water injection test device for cement soil anti-seepage wall, comprising a mobile body (100) and water injection devices (110) arranged at both ends of the mobile body (100), a plurality of cylinders (101) are arranged between two side clamping plates arranged at the bottom of the mobile body (100), and a water level detection device (120) for detecting the water level is arranged at the middle of the top end of the cylinder (101), characterized in that: A windproof protection system is provided inside the cylinder (101), the protection system comprising a first baffle (103) and a second baffle (104) slidably connected to the first baffle (103), the first baffle (103) being slidably connected to the cylinder (101), and lifting portions (300) are provided on both sides of the second baffle (104), the lifting portions (300) being used to drive the first baffle (103) and the second baffle (104) to be raised in height as a whole; A movable limiting portion (200) is symmetrically arranged on the inner side of the cylinder (101); the first baffle (103) drives the movable limiting portion (200) to extend outward to limit the shaking of the water level detection device (120); and the movable limiting portion (200) after movement cooperates with the second baffle (104) to block the airflow; The movable limiting portion (200) comprises an outer limiting plate (201) and an inner limiting plate (202); the inner limiting plate (202) is slidably connected to the inner portion of the outer limiting plate (201); an auxiliary block (204) rotatably connected to the end of the inner limiting plate (202) is threadedly connected to an arcuate lead screw (210); and the arcuate lead screw (210) is rotatably connected to a support block fixed to the inner side of the cylinder (101); A roller (211) is fixedly connected to the middle of the arc-shaped lead screw (210). When the first baffle plate (103) moves downward, the roller (211) drives the auxiliary block (204) to rotate by utilizing the friction between the roller (211) and the inner contact surface of the first baffle plate (103), so that the inner limit plates (202) on both sides drive the outer limit plates (201) to move toward the column; The auxiliary block (204) is fixedly connected to an inner cylinder of a telescopic rod (205), and the outer cylinder of the telescopic rod (205) is fixedly connected to a third protective plate (203) on one side, wherein the third protective plates (203) on both sides slide against the second baffle plate (104) when the auxiliary block (204) moves outward; The outer arc surface of the third protection plate (203) is symmetrically provided with a sliding groove (206), and the sliding rail (107) slidably connected to the sliding groove (206) is fixed on one side of the inner arc surface of the second baffle plate (104).

2. The automatic water injection test equipment for cement soil anti-seepage wall according to claim 1 is characterized in that: The water level detection device (120) is composed of floating balls (121) on both sides, a vertical plate (122) and a flip plate (123); the floating balls (121) are rotatably connected to the flip plate (123) via a column; the floating balls (121) are symmetrically distributed; the middle of the flip plate (123) is rotatably connected to the vertical plate (122); and the vertical plate (122) is slidably connected to a bracket fixed to the inner wall of the cylinder (101) in a vertical direction.

3. The automatic water injection test equipment for cement soil anti-seepage wall according to claim 1 is characterized in that: The lifting portion (300) comprises inclined push rods (301) at two sides, one end of the inclined push rod (301) being rotatably connected to the second baffle (104), and the other end of the inclined push rod (301) being rotatably connected to the two ends of the rotating shaft being fixedly connected to a fixing block (302), and the fixing block (302) being slidably connected to an outer support plate (102) fixed to the cylinder (101).

4. The automatic water injection test equipment for cement soil anti-seepage wall according to claim 3 is characterized by: A cavity is provided in the outer support plate (102); one end of a first spring (303) disposed in the cavity is fixedly connected to the fixing block (302) and the other end is fixedly connected to the stopper (304); the bottom of the stopper (304) protrudes outward.

5. The automatic water injection test equipment for cement soil anti-seepage wall according to claim 1 is characterized by: The second baffle (104) is semicircular in shape, the bottom of the second baffle (104) is fixedly connected to a plurality of vertical rods (106) in an array manner, the vertical rods (106) are slidably connected to the first baffle (103), and a second spring (105) is sleeved outside the vertical rods (106).

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