A device for detecting settlement of rockfill dams

Abstract

This utility model relates to the field of rockfill dam construction technology, specifically disclosing a detection device for the settlement of a rockfill dam body. The device includes a detection box containing a water-filled cylinder connected to a rubber tube, which in turn connects to a settlement marker. The detection box consists of a top plate, a bottom plate, a front side plate, a rear side plate, a left side plate, and a right side plate. By horizontally moving the left and right side plates, they are retracted into the detection box, thereby reducing the lateral pressure of the compacted soil on the left and right side plates and allowing for excavation, thus enabling faster removal of the detection box.

Description

Technical Field

[0001] This utility model relates to the field of rockfill dam construction technology, specifically to a device for detecting the settlement of rockfill dam bodies. Background Technology

[0002] Settlement of a rockfill dam refers to the vertical displacement of the dam body under external loads such as its own weight and water pressure, mainly manifested as downward movement of the top or the entire dam body. Settlement of the rockfill dam body occurs during filling, compaction, and other processes.

[0003] The uniformity of settlement of the rockfill dam body during the settlement process is a key indicator for the quality control of rockfill dam filling. Settlement detection and deformation law analysis of rockfill dam body filling will help promote the development of rockfill dam design and construction technology.

[0004] Settlement monitoring devices need to be buried within the fill area for settlement monitoring. Afterwards, to obtain data on the rise and fall of the rockfill dam, the monitoring devices buried within the fill area need to be removed. During the excavation and removal process of existing settlement monitoring devices, the soil around the devices is compacted, resulting in significant lateral pressure on the devices and making excavation difficult, thus slowing down the removal process. Utility Model Content

[0005] The purpose of this invention is to provide a detection device for the settlement of rockfill dams, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A device for detecting the settlement of a rockfill dam includes a detection box containing a water-filled cylinder connected to a rubber tube, which in turn connects to a settlement marker. The detection box comprises a top plate, a bottom plate, a front side plate, a rear side plate, a left side plate, and a right side plate. The top and bottom plates are fixedly connected, and the detection box is connected to a positioning rope. The left and right side plates have identical structures, as do the front and rear side plates. A disc frame is installed inside the detection box, with a first gear at its center and two second gears on either side of the disc frame, each meshing with the first gear. Each second gear is coaxially connected to a vertically arranged double-acting screw. Located on the left and right sides inside the detection box, respectively, two bidirectional lead screws are connected to the left and right side plates via a transmission structure. The transmission structure on the left side includes a first slider and a second slider, which are threaded onto the two ends of the bidirectional lead screw, respectively. It also includes a guide rod arranged parallel to the bidirectional lead screw, which passes through the first and second sliders. It also includes two connecting rods, one end of which is hinged to the same point on the left side plate. One connecting rod is hinged to the first slider, and the other connecting rod is hinged to the second slider. When the bidirectional lead screw on the left side rotates, it drives the left side plate to move horizontally. Correspondingly, the right side plate is driven by a transmission mechanism located on the right side inside the detection box.

[0007] Furthermore, it also includes two second gears meshing with the first gear, for a total of four second gears. The four second gears are located on the front, rear, left, and right sides inside the detection box, respectively. Correspondingly, there are also four bidirectional lead screws and transmission structures. The front side plate is driven by the bidirectional lead screw located on the front side inside the detection box, and the rear side plate is driven by the bidirectional lead screw located on the rear side inside the detection box. The front side plate includes a main plate, a connecting block, and two shrink plates. The main plate is fixedly connected to the connecting block. The two ends of the main plate are provided with inclined surfaces, and one end of the shrink plate is provided with an inclined surface. The two shrink plates are located on both sides of the main plate, and the inclined surfaces of the shrink plates abut against the inclined surfaces of the main plate. The two shrink plates are each connected to the connecting block through a first spring. This allows the front side plate to compress its width when subjected to pressure from the left and right sides, and to return to its initial state when the pressure from the left and right sides of the front side plate disappears. The structure of the rear side plate is the same as that of the front side plate.

[0008] Furthermore, it also includes a sliding frame, with each end of the sliding frame slidably connected to two shrink plates.

[0009] Furthermore, a cylinder is provided at each of the four corners inside the detection box, and the lower end of the cylinder is connected to the bottom of the detection box; a conical rod is provided inside the cylinder, with the pointed part of the conical rod facing downward, for fixing the detection box.

[0010] Furthermore, a rotating ring is fixedly connected to the first gear.

[0011] Furthermore, the base plate is provided with perforations, and a connector is provided inside the perforations, with a connecting bracket provided at the upper end of the connector.

[0012] Furthermore, a rotating shaft is rotatably provided at the bottom of the top plate, and a storage wheel is provided on the rotating shaft. The positioning rope is wound around the storage wheel. A limit groove is provided on the rotating shaft, and a limit block is provided in the limit groove. The limit block is connected to the top plate through a second spring.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects: The detection box consists of a top plate, a bottom plate, a front side plate, a rear side plate, a left side plate, and a right side plate. A first gear meshes with a second gear, which in turn connects to a double-acting screw, controlling the screw's rotation. This rotation causes the first and second sliders to move in opposite directions, which, through a connecting rod, allows the left or rear side plate to move horizontally. This horizontal movement of the left and right side plates retracts them into the detection box, reducing the lateral pressure from the compacted soil and creating excavation space, thus enabling faster removal of the detection box. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present utility model.

[0015] Figure 2 This is a partial sectional view taken from the front.

[0016] Figure 3 This is a top view showing the meshing of the first and second gears.

[0017] Figure 4 This is a structural diagram of the front panel.

[0018] Figure 5 This is a structural diagram of a cylinder and a conical rod.

[0019] Figure 6 This is a structural diagram of the connector and connector frame.

[0020] Figure 7 This is a diagram showing the connection structure of the storage wheels.

[0021] The labels in the diagram are as follows: 1-Base plate, 2-Rubber tube, 3-Left side plate, 4-Front side plate, 5-Top plate, 6-Double-actuated screw, 7-First slider, 8-Second slider, 9-Connecting rod, 10-Disc frame, 11-Second gear, 12-First gear, 13-Main board, 14-Contraction plate, 15-Sliding frame, 16-Connecting block, 17-First spring, 18-Cylinder, 19-Conical rod, 20-Water container, 21-Connector, 22-Connecting frame, 23-Storage wheel, 24-Limiting block, 25-Positioning rope, 26-Second spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so as to provide a better understanding of the concept of the present utility model, the technical problem solved, the technical features constituting the technical solution and the technical effects brought about.

[0023] like Figures 1-4 As shown, a device for detecting the settlement of a rockfill dam includes a detection box containing a water-filled cylinder 20 connected to a rubber tube 2, which in turn connects to a settlement marker. The detection box consists of a top plate 5, a bottom plate 1, a front side plate 4, a rear side plate, a left side plate 3, and a right side plate. The top plate 5 and the bottom plate 1 are fixedly connected, and the detection box is connected to a positioning rope 25. The left side plate 3 and the right side plate have the same structure, as do the front side plate 4 and the rear side plate. A disc frame 10 is installed inside the detection box, with a first gear 12 at its center and a second gear 11 on each side of the disc frame 10. The two second gears 11 mesh with the first gear 12 respectively. Each second gear 11 is coaxially connected to a vertically arranged bidirectional... Two bidirectional lead screws 6 are located on the left and right sides inside the detection box, respectively. The two bidirectional lead screws 6 are connected to the left side plate 3 and the right side plate via a transmission structure. The transmission structure includes a first slider 7 and a second slider 8 threaded onto the two threads of the bidirectional lead screws 6, respectively; a guide rod parallel to the bidirectional lead screws 6, passing through the first slider 7 and the second slider 8; and two connecting rods 9, one end of which is hinged to the same point on the left side plate 3. One connecting rod 9 is hinged to the first slider 7, and the other connecting rod 9 is hinged to the second slider 8. Rotation of the left bidirectional lead screw 6 causes the left side plate 3 to move horizontally. Correspondingly, the right side plate is driven by the bidirectional lead screw 6 located on the right side inside the detection box. A water container 20 is fixedly mounted on the base plate 1.

[0024] The detection principle is as follows: The settlement marker is installed outside the rockfill dam and is in a static state. The settlement marker and the water-filled cylinder 20 are connected via a rubber tube 2. The detection is performed using the principle of communicating vessels. Water is injected into the transparent rubber tube to ensure the water level in the water-filled cylinder 20 of the settlement marker matches the water level in the rubber tube 2 of the detection marker. When the rockfill dam embankment settles during compaction, the settlement detection marker embedded inside settles along with the embankment. Water in the water-filled cylinder 20 overflows from the overflow hole, and the water level in the rubber tube 2 of the detection marker also decreases. The decrease in water level is read using a ruler, thus determining the embankment settlement. The above describes the detection principle in existing technology. This invention does not improve the detection process but improves the removal of the detection device.

[0025] The working process of this utility model is as follows: the detection box is buried in the filling area of ​​the rockfill dam body for detection, and the detection is waited for to be completed; after the detection is completed, the detection box is dug out and the detection information is confirmed. During the excavation of the test box, the soil on top of the test box is first excavated, and then the top cover of the test box is removed. The second gear 11 is rotated by rotating the first gear 12, which in turn rotates the double-acting screw 6. The first slider 7 and the second slider 8 are respectively threaded onto the threads at both ends of the double-acting screw 6, and the guide rod passes through the first slider 7 and the second slider 8, restricting the movement trajectory of the first slider 7 and the second slider 8. This causes the first slider 7 and the second slider 8 to move towards the middle of the double-acting screw 6 simultaneously, or to move towards both ends of the double-acting screw 6 simultaneously. The two connecting rods 9 form a V-shape. When the first slider 7 and the second slider 8 move towards each other simultaneously, the left side plate 3 is pushed outward. When the first slider 7 and the second slider 8 move towards both ends of the double-acting screw 6 simultaneously, the left side plate 3 is pulled inward. The right side plate moves horizontally synchronously under the drive of the other double-acting screw 6. The staff selected the rotation direction of the first gear 12, causing the left side plate 3 and the right side plate to move inward simultaneously, thereby reducing the lateral pressure on the left side plate 3 and the right side plate and leaving space for excavation, so as to facilitate the retrieval of the test box from the filling area.

[0026] Furthermore, it also includes two second gears 11 meshing with the first gear 12, for a total of four second gears 11, located on the front, rear, left, and right sides inside the detection box, respectively; correspondingly, there are also four bidirectional lead screws 6 and transmission structures, all with identical structures. The front side plate 4 is driven by the bidirectional lead screw 6 located on the front side inside the detection box, and the rear side plate is driven by the bidirectional lead screw 6 located on the rear side inside the detection box; the front side plate 4 includes a main plate 13, a connecting block 16, and two shrink plates 14, the main plate 13 and the connecting block 12 meshing with the first gear 12, the connecting block 12 meshing with the first gear 12, the first gear 12 meshing with the first gear 12, the second gear 12 meshing with the first gear 12, the first ... The connecting block 16 is fixedly connected. The main board 13 has inclined surfaces at both ends, and the shrink plate 14 has an inclined surface at one end. The two shrink plates 14 are located on opposite sides of the main board 13, with their inclined surfaces abutting against the inclined surfaces of the main board 13. Each shrink plate 14 is connected to the connecting block 16 via a first spring 17. This allows the front side plate 4 to compress its width when subjected to pressure from the left and right sides, and to return to its initial state when the pressure from the left and right sides disappears. The structure of the rear side plate is the same as that of the front side plate 4. This embodiment includes four second gears 11 for simultaneously retracting the front side plate 4, rear side plate, left side plate 3, and right side plate inwards, further reducing the lateral pressure on the detection box and facilitating its retrieval. The difficulty in retracting the side plates in all four directions simultaneously lies in the interference that occurs between the front side plate 4, rear side plate, left side plate 3, and right side plate. The two ends of the front side plate 4 of this utility model are located between the left side plate 3 and the right side plate. When the left side plate 3 and the right side plate retract inward simultaneously, they will squeeze the two ends of the front side plate 4. The front side plate 4 is composed of a main plate 13 and two shrinking plates 14. After the two shrinking plates 14 are squeezed, they will be misaligned at the inclined surfaces of the main plate 13 and the two shrinking plates 14, which reduces the overall width of the front side plate 4. This prevents the left side plate 3 and the right side plate from interfering when retracting inward. The movement principle of the rear side plate is the same as that of the front side plate 4. The bidirectional lead screw 6 located at the front of the detection box is connected to the main plate 13 of the front side plate 4 through the first slider 7, the second slider 8 and the connecting rod 9. When the main plate 13 retracts, it will not directly pull the shrinking plates 14 on both sides of the main plate 13. The shrinking plates 14 will be affected by friction. If the friction is high, the front side plate 4 will be in a groove shape. If the friction is low, the shrinking plates 14 will retract directly. Neither of these situations will affect the effect of this utility model. When the pressure on the left and right sides of the front side plate 4 is removed, the first spring 17 restores the front side plate 4 to its initial state. Figure 6 From a structural perspective, although the extension and retraction direction of the first spring 17 is different from the movement direction of the contraction plate 14, the spring also has a tendency to return to its original state when subjected to lateral force. As long as it does not exceed a specific stress range, it can return to its original state when the lateral force disappears.

[0027] Furthermore, it also includes a sliding frame 15, with both ends of the sliding frame 15 slidably connected to two shrink plates 14 respectively. The sliding frame 15 supports the shrink plates 14.

[0028] like Figure 5 As shown, furthermore, cylindrical tubes 18 are respectively provided at the four corners inside the detection box, and the lower end of the cylindrical tubes 18 is connected to the bottom of the detection box; a conical rod 19 is provided inside the cylindrical tube 18, with the pointed part of the conical rod 19 facing downward, for fixing the detection box. When this utility model is buried in the filling area, the conical rod 19 is pressed down inside the detection box for fixation, increasing the stability of this utility model during use.

[0029] like Figure 7 As shown, a rotating ring is fixedly connected to the first gear 12, and the rotating ring has a handle, so that the operator can rotate the first gear 12 by hand.

[0030] like Figure 6 As shown, the base plate 1 further includes a perforation, within which a connector 21 is installed. A connecting bracket 22 is mounted on the upper end of the connector 21, and a rubber tube 2 is fitted onto the lower end of the connector 21. The rubber tube 2 is fixedly connected to the base plate 1. The connector 21 serves to secure the present invention and enhance its fixation effect.

[0031] Furthermore, a rotating shaft is rotatably mounted at the bottom of the top plate 5, and a storage wheel 23 is mounted on the shaft. The positioning rope 25 is wound around the storage wheel 23. A limit groove is provided on the rotating shaft, and a limit block 24 is provided in the limit groove. The limit block 24 is connected to the top plate 5 through a second spring 26. The storage wheel 23 is provided to store the positioning rope 25. During use, the positioning rope 25 is pulled outward according to the filling thickness to prevent the positioning rope 25 from tangling during storage. After storage, the storage wheel 23 needs to be fixed to ensure that the length of the positioning rope 25 does not change. The elasticity of the second spring 26 is used to push the limit block 24 into the limit groove, so that the limit block 24 locks the rotating shaft and prevents the rotating shaft from rotating, thereby ensuring that the length of the positioning rope 25 does not change.

[0032] The terms "connection" and "fixing" appearing in this utility model description can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this utility model should be understood according to the specific circumstances.

[0033] In the description of this utility model, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., are used only to indicate the orientation or positional relationship for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for detecting settlement of a rockfill dam body, comprising a detection box, wherein a water-holding cylinder (20) is installed inside the detection box, the water-holding cylinder (20) is connected to a rubber tube (2), and the rubber tube (2) is connected to a settlement gauge; characterized in that: The test box consists of a top plate (5), a bottom plate (1), a front side plate (4), a rear side plate, a left side plate (3), and a right side plate. The top plate (5) and the bottom plate (1) are fixedly connected, and the test box is connected to a positioning rope (25). The left side panel (3) and the right side panel have the same structure, and the front side panel (4) and the rear side panel have the same structure. The test box is equipped with a disc frame (10), a first gear (12) is set in the center of the disc frame (10), and a second gear (11) is set on the left and right sides of the disc frame (10), and the two second gears (11) mesh with the first gear (12) respectively; Each second gear (11) is coaxially connected to a vertically arranged bidirectional lead screw (6). The two bidirectional lead screws (6) are located on the left and right sides inside the detection box, respectively. The two bidirectional lead screws (6) are connected to the left side plate (3) and the right side plate through a transmission structure. The transmission structure on the left includes a first slider (7) and a second slider (8) that are respectively threaded onto the two threads of the bidirectional lead screw (6), and a guide rod that is parallel to the bidirectional lead screw (6) and passes through the first slider (7) and the second slider (8); it also includes two connecting rods (9), one end of which is hinged to the same point on the left side plate (3), one connecting rod (9) is hinged to the first slider (7) and the other connecting rod (9) is hinged to the second slider (8); so that when the bidirectional lead screw (6) on the left rotates, it drives the left side plate (3) to move horizontally; Correspondingly, the right side plate is driven by a transmission mechanism located on the right side inside the detection box.

2. The device for detecting settlement of a rockfill dam body according to claim 1, characterized in that: It also includes two second gears (11) meshing with the first gear (12), for a total of four second gears (11), which are located on the front, rear, left and right sides of the detection box respectively; Correspondingly, there are also four bidirectional lead screws (6) and transmission structures. The front side plate (4) is driven by the bidirectional lead screw (6) located on the front side inside the detection box, and the rear side plate is driven by the bidirectional lead screw (6) located on the rear side inside the detection box. The front panel (4) includes a main board (13), a connecting block (16) and two shrink plates (14). The main board (13) is fixedly connected to the connecting block (16). The two ends of the main board (13) are provided with inclined surfaces, and one end of the shrink plate (14) is provided with an inclined surface. The two shrink plates (14) are located on both sides of the main board (13). The inclined surfaces of the shrink plates (14) abut against the inclined surfaces of the main board (13). The two shrink plates (14) are connected to the connecting block (16) through a first spring (17). This allows the front panel (4) to compress its width when subjected to pressure from the left and right sides, and to restore its initial state when the pressure from the left and right sides of the front panel (4) disappears. The structure of the rear panel is the same as that of the front panel (4).

3. The device for detecting settlement of a rockfill dam body according to claim 2, characterized in that: It also includes a sliding frame (15), the two ends of which are slidably connected to two shrink plates (14).

4. The device for detecting settlement of a rockfill dam body according to claim 1, characterized in that: The four corners inside the detection box are respectively provided with cylinders (18), and the lower end of the cylinders (18) is connected to the bottom of the detection box; A cone rod (19) is provided inside the cylinder (18), with the pointed part of the cone rod (19) facing downwards, for fixing the detection box.

5. The device for detecting settlement of a rockfill dam body according to claim 1, characterized in that: A rotating ring is fixedly connected to the first gear (12).

6. The device for detecting settlement of a rockfill dam body according to claim 1, characterized in that: The base plate (1) is provided with a perforation, and a connector (21) is provided in the perforation. A connector (22) is provided at the upper end of the connector (21).

7. The device for detecting settlement of a rockfill dam body according to claim 1, characterized in that: The bottom of the top plate (5) is rotatably provided with a rotating shaft, and a storage wheel (23) is provided on the rotating shaft. The positioning rope (25) is wound around the storage wheel (23). A limit groove is provided on the rotating shaft, and a limit block (24) is provided in the limit groove. The limit block (24) is connected to the top plate (5) through a second spring (26).

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