Blasting vibration monitoring device
By designing a blasting vibration monitoring device with a transparent cylindrical box and a ball-joint structure, the problem of accurately measuring the distribution direction of blasting vibration in the rockfill dam of a pumped storage power station was solved, achieving precise monitoring and isolation of blasting vibration and avoiding damage to the dam structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYRDO ENG BUREAU 3 CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-12
AI Technical Summary
In the existing technology for direct blasting of rockfill dams with pumped storage power station panels, it is impossible to accurately determine the distribution direction of blasting vibration, which can easily lead to misjudgment of vibration energy and cause cracks or structural instability in the dam body.
Design a blasting vibration monitoring device comprising a transparent cylindrical box, a ball joint structure, and a measuring structure. The ball joint structure swings in all directions and collides with the measuring structure during blasting vibration to measure the vibration magnitude. Combined with a double-layer box structure and a T-slot push rod system, the blasting vibration distribution direction can be accurately determined.
It enables accurate measurement of the blasting vibration distribution direction, avoiding dam cracks or structural instability caused by the failure to isolate subsequent blasting vibration energy, and improving the safety and control precision of the blasting process.
Smart Images
Figure CN224231085U_ABST
Abstract
Description
Technical Field
[0001] A blasting vibration monitoring device is used for blasting vibration monitoring, belonging to the technical field of blasting vibration monitoring devices. Background Technology
[0002] In recent years, with the rapid development of pumped storage power stations, rockfill dams with concrete panels have been widely adopted due to their adaptability, economy, and reliability. Each power station faces tight schedules and heavy workloads, especially given the large quantities of various gradations required for the dam body. If traditional mechanical crushing and screening techniques are used for the transition material, the extraction cost is high, and the extraction intensity is far from meeting the filling requirements. In this context, leveraging the expertise in bench-type deep-hole blasting rock breaking technology, and combining engineering design requirements with actual site conditions, a direct blasting extraction method is adopted in the production of the transition material. Rockfill dams with concrete panels have strict requirements for the gradation of the transition material (typically 5-80mm particle size). Traditional mechanical crushing requires multi-stage screening, while direct blasting extraction directly obtains the qualified gradation by controlling blasting parameters, reducing intermediate steps. During the construction process using the direct blasting extraction method, blasting vibration monitoring devices are the core tool for mastering blasting vibration data and optimizing construction. However, existing blasting vibration monitoring devices have the following technical problems:
[0003] In the direct blasting technology for rockfill dams with pumped storage power stations, the distribution direction of blasting vibration cannot be accurately determined, which can easily lead to misjudgment of vibration energy. This can result in subsequent blasting vibration energy not being isolated, potentially causing cracks in the dam body or structural instability. Utility Model Content
[0004] The purpose of this utility model is to provide a blasting vibration monitoring device to solve the problem that in the existing technology of direct blasting mining technology for pumped storage power station panel rockfill dams, it is impossible to accurately know the distribution direction of blasting vibration, which easily leads to misjudgment of vibration energy, and thus easily causes subsequent blasting vibration energy to be not isolated, inducing dam cracks or structural instability.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A blasting vibration monitoring device includes a cylindrical box with at least a transparent top, multiple measuring structures evenly spaced along the circumference of the cylindrical box, a ball joint structure disposed within the cylindrical box with its central axis being the same as the central axis of the cylindrical box and which oscillates under force in coordination with each measuring structure, and a limiting structure disposed on the cylindrical box to center and limit the ball joint structure.
[0007] Furthermore, the cylindrical box includes an outer box and an inner box disposed inside the outer box to form a gap between the inner and outer boxes, as well as a bottom plate connecting the outer box and the inner box and a top plate that movably seals the top of the outer box and the inner box.
[0008] Along the perimeter of the inner casing, multiple through holes corresponding to the measuring structures are evenly spaced on the inner casing. Each measuring structure is located on the outer casing corresponding to the through hole.
[0009] Furthermore, the measuring structure includes a T-slot located at the through hole in the inner housing and on the outer housing corresponding to the through hole, a T-block slidably disposed on the T-slot, and a push rod connected to the T-block and disposed within the inner housing in cooperation with a ball joint structure. The inner housing restricts the T-block from sliding into the inner housing through the through hole.
[0010] Furthermore, the T-shaped block includes a horizontal plate and a vertical plate disposed on the horizontal plate, located on both sides of the vertical plate, and the horizontal plate is provided with an elastic sheet that cooperates with the T-shaped groove.
[0011] Furthermore, along the length of the T-slot, the T-slot is provided with a scale, and the vertical plate of the T-block is provided with pointer scales that correspond to the scales.
[0012] Furthermore, the ball joint structure includes a cross-shaped frame disposed on one side of the top of the inner box, a ball joint disposed at the center of the cross-shaped frame, a connecting rod connected to the ball joint, and a spherical weight connected to the connecting rod and cooperating with the measuring structure.
[0013] Furthermore, the ball joint includes a ball socket connected to a cross-shaped frame, and a ball rotatably connected to the ball socket and connected to a connecting rod.
[0014] Furthermore, the connecting rod and the ball socket are provided with limit holes A, and the top plate of the cylindrical box is provided with limit holes B corresponding to limit holes A;
[0015] The limiting structure includes a tapered rod passing through limiting holes A and B, and a handle mounted on the tapered rod.
[0016] Compared with the prior art, the advantages of this utility model are:
[0017] I. In the direct blasting technology of pumped storage power station panel rockfill dam, this utility model is buried near the blasting site and the limitation of the spherical hinge structure on the limiting structure is eliminated. When the blasting occurs, the spherical hinge structure swings in all directions and collides with the corresponding measuring structure when it is affected by vibration. The magnitude of the vibration in the corresponding direction is measured by each measuring structure to accurately know the distribution direction of the blasting vibration, which is conducive to the isolation of vibration energy in the subsequent blasting process and avoids the problem of inducing dam cracks or structural instability.
[0018] Second, this utility model sets the cylindrical box body as a double-layer structure, which is conducive to setting the measuring structure and the ball joint structure for vibration measurement. At the same time, the top plate is used for movable sealing to prevent impurities from entering during explosion. It also makes it easy to open the cylindrical box body to reset the measuring structure.
[0019] 3. The measuring structure in this utility model includes a T-shaped groove between the outer box and the inner box, a T-shaped block slidably disposed on the T-shaped groove, and a push rod connected to the T-shaped block and disposed in the inner box. This facilitates the push rod to receive the force of the ball joint structure under vibration, so that the push rod can push the T-shaped block to move in the T-shaped groove. After the blasting is completed, it is convenient to accurately know the distribution direction of the blasting vibration by observing the sliding distance of each T-shaped block in the corresponding T-shaped groove.
[0020] Fourth, the vertical plate of the T-block in this utility model is provided with an elastic sheet that cooperates with the T-slot, which helps to fix the T-block stably in a certain position after it is subjected to force, and avoids the problem of inaccurate movement of the T-block in the T-slot due to excessive inertia.
[0021] V. This utility model sets a scale on the T-slot, and sets a pointer scale that matches the scale on the vertical plate of the T-block, so as to accurately obtain the accurate movement distance of the T-block by matching the pointer scale with the scale.
[0022] VI. The ball joint structure in this utility model is fixed to the inner box by a cross-shaped frame, and a ball is rotatably connected to a ball socket connected to the cross-shaped frame. A connecting rod and a spherical weight are connected to the ball in sequence. When the spherical weight is affected by the vibration of the explosion, the ball will rotate and cooperate with the ball socket, so that the connecting rod and the spherical weight swing and hit the connecting rod to push the T-shaped block to slide and cooperate with the T-shaped groove. This facilitates the accurate acquisition of the vibration magnitude in each direction by the vibration influence received by the measuring structure distributed along the circumference of the cylindrical box.
[0023] VII. The limiting structure in this utility model facilitates the insertion or removal of the cone rod into or from the limiting hole A and limiting hole B by controlling the handle. Insertion ensures that the ball joint structure does not swing during installation or after blasting, while removal prevents it from swinging due to vibration during blasting. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of this utility model;
[0026] Figure 2 for Figure 1 A sectional view;
[0027] Figure 3 This is a schematic diagram of the ball joint structure in this utility model when it is not affected by vibration and is in conjunction with the ball joint structure.
[0028] Figure 4 In this utility model Figure 2 Partial structural diagram;
[0029] Figure 5 This is a schematic diagram of the measuring structure in this utility model;
[0030] Figure 6 for Figure 5 A schematic diagram of the unfolded structure;
[0031] In the diagram: 1-Cylindrical box, 2-Measuring structure, 3-Spherical hinge structure, 4-Limiting structure, 5-Outer box, 6-Inner box, 7-Bottom plate, 8-Top plate, 9-Through hole, 10-T-slot, 11-T-block, 12-Push rod, 13-Horizontal plate, 14-Vertical plate, 15-Elastic sheet, 16-Scale, 17-Pointer scale, 18-Cross-shaped frame, 19-Spherical hinge, 20-Connecting rod, 21-Spherical weight, 22-Spherical socket, 23-Sphere, 24-Limiting hole A, 25-Limiting hole B, 26-Conical rod, 27-Handle. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0034] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0035] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.
[0036] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0038] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0039] Example 1
[0040] To address the problem that existing technologies in the direct blasting extraction of rockfill dams for pumped storage power stations cannot accurately determine the distribution direction of blasting vibrations, easily leading to misjudgment of vibration energy and consequently, failure to isolate subsequent blasting vibration energy, potentially inducing dam cracks or structural instability. For example... Figure 1-6As shown, a blasting vibration monitoring device is provided, including a cylindrical box 1 with at least a transparent top, multiple measuring structures 2 evenly spaced along the circumference of the cylindrical box 1, a ball joint structure 3 disposed inside the cylindrical box 1 with its central axis aligned with the central axis of the cylindrical box 1 and whose force-induced oscillation cooperates with each measuring structure, and a limiting structure 4 disposed on the cylindrical box 1 to center and limit the ball joint structure 3. The bottom of the cylindrical box 1 may or may not have conical teeth, depending on the specific application scenario.
[0041] In practice, the limiting structure 4 is first matched with the ball joint structure 3, then the measuring structures 2 are initialized, and then the device is buried at the designated location around the blasting site. After burial (the upper part of the cylindrical box 1 does not need to be buried underground to facilitate quick observation of the measuring structures 2 later), it is necessary to ensure that the axis of the cylindrical box 1 is located in the vertical plane. After burial, the limitation of the limiting structure 4 on the ball joint structure 3 is removed, and then the blasting is carried out. When the blasting occurs, the ball joint structure is affected by vibration and swings in various directions and collides with the corresponding measuring structures. The magnitude of the vibration in the corresponding direction is measured by each measuring structure to accurately determine the distribution direction of the blasting vibration, which is beneficial for isolating the vibration energy during the subsequent blasting process and avoiding the induction of dam cracks or structural instability.
[0042] Example 2
[0043] Based on Embodiment 1, the cylindrical housing 1 includes an outer housing 5 and an inner housing 6 disposed inside the outer housing 5, forming a gap between the inner and outer housing 5. It also includes a bottom plate 7 connecting the outer housing 5 and the inner housing 6, and a top plate 8 that movably seals the top of the outer housing 5 and the inner housing 6. The top plate 8 can be threaded into the outer housing 5, or it can be sealed to the outer housing by placing a rubber pad on its outer edge. Along the circumference of the inner housing 6, multiple through holes 9 corresponding to the measuring structures 2 are evenly spaced on the inner housing 6. Each measuring structure 2 is disposed outside the through hole 9 on the corresponding outer housing 5. This embodiment uses a double-layer structure for the cylindrical housing, which facilitates the installation of the measuring structures and the ball joint structure for vibration measurement. Simultaneously, the top plate provides a movable seal, preventing impurities from easily entering during explosions, and facilitating the opening of the cylindrical housing to reset the measuring structures.
[0044] Example 3
[0045] Based on embodiment 2, the measuring structure 2 includes a T-slot 10 located at the through hole 9 of the inner box 6 and on the outer box 5 corresponding to the through hole 9, a T-block 11 slidably disposed on the T-slot 10, and a push rod 12 connected to the T-block 11 and placed inside the inner box 6 to cooperate with the ball joint structure 3. The inner box 6 restricts the T-block 11 from sliding into the inner box 6 through the through hole 9.
[0046] In practice, when the ball joint structure 3 is affected by vibration, it applies a force to the push rod 12 in the corresponding measurement structure. The push rod 12 will push the T-block 11 to slide to different degrees in the T-slot 10. After the blasting is completed, it is convenient to observe the sliding distance of each T-block 11 in the corresponding T-slot 10 to accurately determine the distribution direction of the blasting vibration.
[0047] Example 4
[0048] Based on embodiment 3, the T-block 11 includes a horizontal plate 13 and a vertical plate 14 disposed on the horizontal plate 13, located on both sides of the vertical plate 14. The horizontal plate 13 is provided with elastic plates 15 that cooperate with the T-slot 10. The elastic plates on the vertical plate of the T-block, which cooperate with the T-slot, facilitate stable fixing of the T-block in a certain position after being subjected to force, avoiding inaccurate movement of the T-block in the T-slot due to excessive inertia. The elasticity of the elastic plates 15 is set according to actual needs.
[0049] Example 5
[0050] Based on embodiment 4, a scale 16 is provided on the T-slot 10 along its length, and a pointer scale 17 corresponding to the scale 16 is provided on the vertical plate 14 of the T-block 11. For example, the pointer scale 17 moves from the 0 mark to the 1 mark. The scale on the T-slot and the pointer scale corresponding to the scale on the vertical plate of the T-block facilitate the accurate acquisition of the precise movement distance of the T-block by coordinating the pointer scale with the scale.
[0051] Example 6
[0052] Based on Embodiment 5, the ball joint structure includes a cross-shaped frame 18 disposed on one side of the top of the inner box 6, a ball joint 19 disposed at the center of the cross-shaped frame 18, a connecting rod 20 connected to the ball joint 19, and a spherical weight 21 connected to the connecting rod 20 and cooperating with the measuring structure 2. The ball joint 19 includes a ball socket 22 connected to the cross-shaped frame 18, and a ball 23 rotatably connected to the ball socket 22 and connected to the connecting rod 20. In this embodiment, the ball joint structure is fixed to the inner box by the cross-shaped frame, and a ball is rotatably connected to the ball socket connected to the cross-shaped frame. The connecting rod and the spherical weight are connected in sequence to the ball. When the spherical weight is affected by the vibration of an explosion, the ball will rotate and cooperate with the ball socket, causing the connecting rod and the spherical weight to swing and strike the connecting rod to push the T-shaped block and the T-shaped groove to slide and cooperate, so as to accurately obtain the vibration magnitude in each direction by the vibration influence received by the measuring structure distributed along the circumference of the cylindrical box. Of course, in practice, it cannot be ruled out that the ball joint structure can be used for other structures.
[0053] Example 6
[0054] Based on embodiment 5, the connecting rod 20 and the ball joint 22 are provided with limiting holes A24, and the top plate 8 of the cylindrical box 1 is provided with limiting holes B25 corresponding to the limiting holes A24; the limiting structure 4 includes a tapered rod 26 passing through the limiting holes A24 and B25, and a handle 27 provided on the tapered rod 26. The limiting structure facilitates the insertion or removal of the tapered rod from the limiting holes A and B by controlling the tapered rod through the handle. Insertion ensures that the ball joint structure does not swing during installation or after blasting, while removal prevents it from swinging due to vibration during blasting. The purpose of using the tapered rod 26 is to facilitate insertion into the limiting holes A and B when there is partial deviation or partial overlap between the limiting holes A and B.
Claims
1. A blasting vibration monitoring device, characterized in that, It includes a cylindrical box (1) with at least a transparent top, multiple measuring structures (2) evenly spaced along the circumference of the cylindrical box (1) on the cylindrical box (1), a ball joint structure (3) set inside the cylindrical box (1) with its central axis being the same as the central axis of the cylindrical box (1) and which is in coordination with each measuring structure when subjected to force and swinging, and a limiting structure (4) set on the cylindrical box (1) to center and limit the ball joint structure (3).
2. The blasting vibration monitoring device according to claim 1, characterized in that: The cylindrical box (1) includes an outer box (5) and an inner box (6) disposed inside the outer box (5) and forming a gap with the outer box (5), as well as a bottom plate (7) connecting the outer box (5) and the inner box (6) and a top plate (8) that movably seals the top of the outer box (5) and the inner box (6). Along the perimeter of the inner box (6), multiple through holes (9) corresponding to the measuring structures (2) are provided at equal intervals on the inner box (6). Each measuring structure (2) is set on the outer box (5) corresponding to the through hole (9) outside the through hole (9).
3. The blasting vibration monitoring device according to claim 2, characterized in that: The measuring structure (2) includes a T-slot (10) on the outer box (5) corresponding to the through hole (9) in the inner box (6), a T-block (11) slidably disposed on the T-slot (10), and a push rod (12) connected to the T-block (11) and placed inside the inner box (6) to cooperate with the ball joint structure (3). The inner box (6) restricts the T-block (11) from sliding into the inner box (6) through the through hole (9).
4. The blasting vibration monitoring device according to claim 3, characterized in that: The T-shaped block (11) includes a horizontal plate (13) and a vertical plate (14) disposed on the horizontal plate (13), located on both sides of the vertical plate (14). An elastic sheet (15) that cooperates with the T-shaped groove (10) is disposed on the horizontal plate (13).
5. The blasting vibration monitoring device according to claim 4, characterized in that: Along the length of the T-slot (10), a scale (16) is provided on the T-slot (10), and a pointer scale (17) that matches the scale (16) is provided on the vertical plate (14) of the T-block (11).
6. A blasting vibration monitoring device according to any one of claims 3-5, characterized in that: The ball joint structure includes a cross-shaped frame (18) set on one side of the top of the inner box (6), a ball joint (19) set at the center of the cross-shaped frame (18), a connecting rod (20) connected to the ball joint (19), and a spherical weight (21) connected to the connecting rod (20) and cooperating with the measuring structure (2).
7. The blasting vibration monitoring device according to claim 6, characterized in that: The ball joint (19) includes a ball socket (22) connected to a cross-shaped frame (18) and a ball (23) rotatably connected to the ball socket (22) and connected to a connecting rod (20).
8. The blasting vibration monitoring device according to claim 7, characterized in that: Limiting holes A (24) are provided on the connecting rod (20) and the ball socket (22), and limiting holes B (25) corresponding to the limiting holes A (24) are provided on the top plate (8) of the cylindrical box (1). The limiting structure (4) includes a tapered rod (26) passing through the limiting hole A (24) and the limiting hole B (25), and a handle (27) set on the tapered rod (26).