Portable blasting vibration monitoring sensor fixing device

Abstract

The utility model belongs to the technical field of blasting monitoring, and particularly discloses a portable blasting vibration monitoring sensor fixing device. A bottom plate of the fixing device is a rectangular plate, two supporting plates are hinged to the left side and the right side opposite to the bottom plate through right-angle hinges and can rotate inwards by 90 degrees, drill rods are fixed to the front side and the rear side of the two supporting plates, the corresponding drill rods on the left side and the right side are arranged in a front-back staggered mode, a fixing buckle is fixed to one supporting plate, and a connecting piece is correspondingly fixed to the other supporting plate. The connecting piece can be fixedly connected with the fixing buckle when the two supporting plates are rotated and folded. The supporting plates are hinged to the two sides of the bottom plate through the right-angle hinges respectively, the drill rod is fixed through the supporting plates, and therefore the multi-supporting-leg structure with the supporting plates and the drill rod capable of being folded is formed, the structure is simple, the weight is light, the multi-supporting-leg structure can reliably and stably support a sensor under different geological conditions such as soft soil and hard rock, and the sensor is convenient to use. The device has the characteristics of simple structure, portability, simplicity and convenience in operation, stability and reliability.

Description

Technical Field

[0001] The utility model belongs to the technical field of blasting monitoring, and particularly relates to a portable blasting vibration monitoring sensor fixing device with a simple structure, convenient operation, stability and reliability. Background Art

[0002] Blasting operation is one of the common methods for rock excavation in mines, water conservancy, transportation and construction projects. The excavation method is restricted and affected by the surrounding environment. Especially in the areas with structures or buildings nearby, it is very likely that the blasting operation will damage the surrounding structures, buildings or facilities, resulting in unnecessary disputes and economic losses. In order to effectively reduce the impact of blasting on surrounding buildings, it is necessary to use blasting vibration monitoring instruments to detect vibration values. At present, blasting vibration testing instruments generally consist of sensors, acquisition boxes and connecting wires. Before blasting, the sensors are fixed at the pre-tested positions, then the equipment is connected, parameters are set, and relevant information about blasting vibration is collected during the blasting process. Therefore, during the blasting vibration monitoring process, the stable and reliable fixation of the sensors plays a crucial role in the accuracy of the monitoring results.

[0003] Traditionally, blasting vibration sensors mainly adopt the fixing method of mixing gypsum with water and then sticking the sensors to the objects to be measured. Although the operation is simple and the cost is low, there are also some challenges as follows:

[0004] 1. It is necessary to arrange professional technicians in advance to prepare gypsum and water and go to the vibration measurement point for on-site installation and fixation. Since the setting time of gypsum is relatively long, it is time-consuming and laborious.

[0005] 2. Sensors cannot be fixed at some measurement points due to soft ground, resulting in inability to test or large errors in the measured vibration data.

[0006] In the prior art, in order to solve the problems existing in the gypsum fixation, a platform carrying a sensor is provided, and a fixing rod that can be buried in hard rock bedrock, a sucker that can be adsorbed on hard rock, and a drill rod that can be inserted into soft ground are provided under the platform, and then the sensor is fixed on the platform by a fixing device. Although the foregoing fixing device solves the problems of time-consuming and laborious sensor fixing and insufficient adaptability to soft ground, since all use a single-leg fixing method with the ground or bedrock, not only the anti-interference ability is weak, resulting in a decrease in the accuracy of measurement data; but also it is easy to be affected by vibrations, water immersion, and ventilation formed by nearby transport vehicles and construction, resulting in a reduction in the reliability and stability of the fixation of the fixing device to the rock and soil, thus unable to provide a guarantee for realizing high-precision and highly reliable vibration measurement data monitoring; and because the installation process of the sensor and the platform is complex, some also require professional technical support and a long calibration time, making the operation more cumbersome and less efficient; in addition, some of the above fixing devices also have the problem of complex structure, resulting in a relatively large overall weight and a relatively long length, which is not convenient for flexible movement and repeated use according to needs. Summary of the Invention

[0007] In view of the deficiencies in the prior art, the present invention provides a portable blasting vibration monitoring sensor fixing device with a simple structure, easy operation, and stable and reliable performance.

[0008] The present invention is implemented as follows: It includes a bottom plate, drill rods, right-angle hinges, and support plates. The bottom plate is a rectangular plate. Two support plates are respectively hinged to the opposite left and right sides of the bottom plate through right-angle hinges to form a 90° inwardly rotatable hinge connection. The drill rods are respectively fixed to the front and rear sides of the outer sides of the two support plates away from each other. The drill rods on the two support plates are arranged in a front-back staggered manner. One of the two support plates is fixedly provided with a fixing buckle on the side away from the right-angle hinge, and the other support plate is fixedly provided with a connecting member on the side away from the right-angle hinge. The connecting member can be connected and fixed to the fixing buckle when the two support plates are rotated and folded.

[0009] Further, the fixing buckle is a cylindrical structure or a polygonal prism structure with a circumferential connecting groove, and the connecting member is a flexible ring made of an elastic material. The connecting member can be snapped into the connecting groove.

[0010] Further, the fixing buckle is a hook seat, and the connecting member is a spring buckle that can be connected to the hook seat.

[0011] Further, a bearing plate is vertically fixed to the upper part of the drill rod near the bottom plate and the middle and lower part away from the bottom plate.

[0012] Further, the cross-section of the end of the drill rod away from the bottom plate is circular, three-leaf-shaped, four-leaf-shaped, or pyramidal, and the right-angle hinge is a 90-degree self-locking folding hinge.

[0013] Further, a connecting screw hole capable of being threadedly connected with a blasting vibration monitoring sensor is provided in the middle of the bottom plate, and / or soft ropes or soft belts are fixedly arranged at intervals on the surface of the bottom plate, and a fixing mechanism capable of pressing against the movable ends of the soft ropes or soft belts is provided.

[0014] Further, at least two groups of soft ropes or soft belts and fixing mechanisms are cross-distributed on the surface of the bottom plate. The fixing mechanism includes a bracket and a screw. The bracket is fixedly arranged on one side far from the fixed end of the soft rope or soft belt. A fixing screw hole is provided at the top of the bracket, and a through channel is provided at the lower part. The screw is threadedly engaged and penetrates downward through the fixing screw hole of the bracket and extends into the channel. The stud end of the screw can press against the bottom of the channel of the bracket.

[0015] Further, the soft rope or soft belt is a strip-shaped soft rope or soft belt, and a plurality of soft teeth or anti-slip protrusions are distributed on the surface opposite to the screw.

[0016] Further, a groove or a boss perpendicular to the opening direction of the channel is provided at the bottom of the channel of the bracket, and a locking table corresponding to the groove at the bottom of the channel or a locking groove corresponding to the boss is provided at the bottom end of the stud of the screw.

[0017] Advantages of the utility model:

[0018] 1. In the utility model, support plates are respectively hinged to the left and right sides of the bottom plate by right-angle hinges, and the support plates fix the drill rods. Thus, a multi-supporting foot structure in which the support plates and the drill rods on both sides of the bottom plate can be folded is formed. The structure is not only simple and light in weight, thus solving the problem that it is difficult to carry the sensor fixing device, facilitating carrying according to needs and flexibly moving to the required measuring points and reusing, but also the multi-supporting foot structure can form reliable and stable support for the sensor under different geological conditions from soft soil to hard rock. Moreover, vibration, water immersion and ventilation will not affect the reliability and stability of the fixing device fixed on the rock and soil, and it has strong anti-interference ability, which can provide a basic guarantee for high-precision and reliable vibration measurement data.

[0019] 2. The bottom plate of the utility model is connected to the support plates on both sides by right-angle hinges, so that the support plates and the drill rods thereon can rotate 90° inward relative to the bottom plate to form a fold to reduce the space volume and facilitate carrying and moving. At the same time, due to the structural limitation of the right-angle hinge, the problem of overturning caused by the accidental outward rotation of the drill rod during the use of the fixing device can be avoided; especially, when a 90° self-locking folding hinge is used as the right-angle hinge, the overturning caused by the accidental inward rotation of the drill rod can also be prevented, thereby further improving the stability and reliability of the fixing device during use.

[0020] 3. The present utility model respectively and correspondingly arranges a fixing buckle and a connecting piece on two supporting plates, so that the unfolding and folding operations are relatively simple. Moreover, through the cooperation of the fixing buckle and the connecting piece, the supporting plates can form a stable structure with the bottom plate after folding, avoiding the scattered state of the folded supporting plates during carrying and transportation, and improving the reliability during carrying and transportation.

[0021] 4. After the supporting plates on both sides of the bottom plate of the present utility model are unfolded, a support structure for multiple drill rods can be formed. For the soft ground at the measuring point, the drill rods can be directly inserted to form a stable fixing foundation for the sensor, while for hard rock, it can be directly placed on the surface. Even if there are individual drill rods suspended due to unevenness, it does not affect the stability. Therefore, reliable and stable support for the sensor can be formed under different geological conditions.

[0022] 5. The present utility model arranges a connecting screw hole in the middle of the bottom plate that can be threadedly connected with a blasting vibration monitoring sensor, and / or soft ropes or soft belts are fixedly spaced on the surface of the bottom plate and a fixing mechanism that can abut against the movable ends of the soft ropes or soft belts, so that the sensor with connecting screws can be quickly and directly fixed, and the sensor without connecting screws can be quickly fixed through the cooperation of the soft ropes or soft belts and the fixing mechanism. Moreover, the cooperation of the soft ropes or soft belts and the fixing mechanism can also fix sensors of different sizes within a certain range, enhancing the adaptability of the fixing device to vibration sensors.

[0023] In summary, the present utility model has the characteristics of simple structure, easy to carry, simple operation, stability and reliability. Description of the Drawings

[0024] Figure 1 is one of the unfolded structural schematic diagrams of the present utility model;

[0025] Figure 2 is the bottom view of the folded structure of the present utility model;

[0026] Figure 3 is Figure 2 the enlarged view of part A of

[0027] Figure 4 is the other unfolded structural schematic diagram of the present utility model;

[0028] Figure 5 is Figure 4 the enlarged view of part B of

[0029] In the figure: 1 - bottom plate, 11 - connecting screw hole, 2 - drill rod, 21 - bearing plate, 3 - right-angle hinge, 4 - supporting plate, 5 - fixing buckle, 51 - connecting groove, 6 - connecting piece, 7 - soft belt, 8 - fixing mechanism, 81 - bracket, 82 - screw, 9 - vibration sensor. Detailed Embodiment

[0030] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments, but it is not limited to the present utility model in any way. Any changes or improvements made based on the teachings of the present utility model fall within the protection scope of the present utility model.

[0031] As Figures 1 to 5 shown, the present utility model includes a bottom plate 1, a drill rod 2, a right-angle hinge 3, and a support plate 4. The bottom plate 1 is a rectangular plate. Two support plates 4 are respectively hinged to the opposite left and right sides of the bottom plate 1 through right-angle hinges 3 to form a 90° inwardly rotatable hinge connection. The drill rods 2 are respectively fixed to the front and rear sides of the outer surfaces of the two support plates 4 that are away from each other. The drill rods 2 on the two support plates 4 are arranged in a front-back offset manner. One of the two support plates 4 is fixedly provided with a fixing buckle 5 on the side away from the right-angle hinge 3, and the other support plate 4 is fixedly provided with a connecting member 6 on the side away from the right-angle hinge 3. The connecting member 6 can be connected and fixed to the fixing buckle 5 when the two support plates 4 are rotated and folded.

[0032] The fixing buckle 5 is a cylindrical structure or a prism structure with a connecting groove 51 circumferentially arranged. The connecting member 6 is a flexible ring made of an elastic material, and the connecting member 6 can be snap-fitted into the connecting groove 51.

[0033] The fixing buckle 5 is a hook seat, and the connecting member 6 is a spring snap that can be connected to the hook seat.

[0034] The drill rod 2 is vertically fixed with a bearing plate 21 at the upper part close to the bottom plate 1 and the middle and lower part away from the bottom plate 1.

[0035] The end of the drill rod 2 away from the bottom plate 1 has a circular, three-leaf, four-leaf, or pyramid-shaped cross-section. The right-angle hinge 3 is a commercially available 90-degree self-locking folding hinge.

[0036] A connecting screw hole 11 that can be threadedly connected to a blasting vibration monitoring sensor is provided in the middle of the bottom plate 1, and / or soft ropes or soft belts 7 are fixedly arranged at intervals on the surface of the bottom plate 1, and a fixing mechanism 8 that can abut against the movable end of the soft ropes or soft belts 7 is provided.

[0037] At least two groups of soft ropes or soft belts 7 and fixing mechanisms 8 are cross-distributed on the surface of the bottom plate 1. The fixing mechanism 8 includes a bracket 81 and a screw 82. The bracket 81 is fixedly arranged on the side away from the fixed end of the soft ropes or soft belts 7. A fixing screw hole is provided at the top of the bracket 81 and a through channel is provided at the lower part. The screw 82 is threadedly engaged and penetrates downward through the fixing screw hole of the bracket 81 and extends into the channel. The stud end of the screw 82 can abut against the bottom of the channel of the bracket 81.

[0038] The soft ropes or soft belts 7 are strip-shaped soft ropes or soft belts, and a number of soft teeth or anti-slip protrusions are distributed on the surface opposite to the screw 82.

[0039] A groove or a boss perpendicular to the channel opening direction is provided at the bottom of the channel of the bracket 81, and a locking table corresponding to the groove at the bottom of the channel or a locking groove corresponding to the boss is provided at the bottom end of the stud of the screw 82.

[0040] The working principle and process of the present utility model:

[0041] As Figures 2 to 5 shown, when manufacturing the fixing device, first, an iron plate with a certain thickness is used as the bottom plate 1 to support and fix the vibration sensor 9. A connecting screw hole 11 is directly machined in the middle of the bottom plate 1 or a through hole is machined and a nut is welded at the bottom of the through hole to form the connecting screw hole 11. Then, a soft rope or a soft belt 7 and a bracket 81 are respectively fixed on both sides of the connecting screw hole 11. Subsequently, two rectangular stainless steel iron plates are used as the support plates 4, and two parallel brazing rods 2 (a bearing plate 21 is vertically welded on the brazing rod 2) are welded on both sides of one surface of the support plate 4, and the brazing rods 2 on the two support plates 4 are staggered. Then, the other side surface of the support plate 4 without the welded brazing rod 2 near both ends is connected to the bottom plate 1 through a 90-degree self-locking folding hinge (i.e., a right-angle hinge 3, which can prevent the unfolded support plate 4 from closing and unfolding outward relative to the bottom plate 1), so that the support plate 4 can be rotated and folded inward by 90° to be parallel to the lower end surface of the bottom plate 1, and the brazing rods 2 on the two support plates 4 are staggered and flush after folding, finally forming a complete fixing device.

[0042] As Figures 2 to 5As shown in the figure, when the fixing device works, first move the fixing device to the measuring point. If the ground at the measuring point is soft soil, first rotate and unfold two support plates 4, and then use tools such as a hammer to strike the top of the drill rod 2 or the bearing plate 21 on the drill rod 2, so that each drill rod 2 is inserted into the ground at the measuring point, ensuring that the bottom plate 1 does not shake and the upper surface of the bottom plate 1 is in a horizontal state, thus completing the installation of the fixing device. Then directly connect the connecting screw of the vibration sensor 9 with the connecting screw hole 11, thereby completing the fixation of the vibration sensor 9; or directly place the vibration sensor 9 on the upper surface of the bottom plate 1, and then pull the soft rope or soft belt 7 to bypass the vibration sensor 9 from above, so that the other side of the soft rope or soft belt 7 passes through the channel on the bracket 81 and tighten the soft rope or soft belt 7, and then rotate the screw 82 to press against the soft rope or soft belt 7 in the channel to complete the fixation of the vibration sensor 9. When necessary, multiple soft ropes or soft belts 7 can be used to fix the vibration sensor 9 in multiple directions from different directions to further enhance the reliability of the fixation. After the vibration monitoring is completed, the fixing device can be placed at the measuring point as a permanent fixed base for subsequent reuse, or the vibration sensor 9 and the folding support plate 4 can be separated by operating in the reverse process as described above, and then taken out for secondary use. After folding, in order to prevent the two support plates 4 from unfolding again, hang the spring buckle (i.e., the connecting member 6) on one side support plate 4 on the hook seat (fixed buckle 5), and then rotate the spring buckle in the reverse direction to tighten the hook seat to complete the fixation after the two support plates 4 are folded.

[0043] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A portable fixing device for blasting vibration monitoring sensors, characterized in that, It includes a bottom plate (1), a drill rod (2), a right-angle hinge (3), and a support plate (4). The bottom plate (1) is a rectangular plate. Two support plates (4) are respectively hinged to the opposite left and right sides of the bottom plate (1) through right-angle hinges (3) to form a 90° inwardly rotatable hinge. The drill rods (2) are respectively fixed to the front and rear sides of the outer sides of the two support plates (4) that are away from each other. The drill rods (2) corresponding to the two support plates (4) are arranged in a front-back offset manner. A fixing buckle (5) is fixedly arranged on one side of one of the two support plates (4) away from the right-angle hinge (3), and a connecting member (6) is fixedly arranged on one side of the other support plate (4) away from the right-angle hinge (3). The connecting member (6) can be connected and fixed to the fixing buckle (5) when the two support plates (4) are rotated and folded.

2. The portable blasting vibration monitoring sensor fixing device according to claim 1, characterized in that The fixing buckle (5) is a cylindrical structure or a prism structure with a connecting groove (51) circumferentially arranged. The connecting member (6) is a flexible ring made of an elastic material, and the connecting member (6) can be snapped into the connecting groove (51).

3. The portable blasting vibration monitoring sensor fixing device according to claim 1, wherein The fixing buckle (5) is a hook seat, and the connecting member (6) is a spring buckle that can be connected to the hook seat.

4. The portable blasting vibration monitoring sensor fixing device according to claim 1, characterized in that The drill rod (2) is vertically fixed with a bearing plate (21) at the upper part close to the bottom plate (1) and the middle and lower part away from the bottom plate (1).

5. The portable blasting vibration monitoring sensor fixing device according to claim 1, characterized in that, The end of the drill rod (2) away from the bottom plate (1) has a circular, three-leaf, four-leaf or pyramid-shaped cross-section. The right-angle hinge (3) is a 90-degree self-locking folding hinge.

6. The portable blasting vibration monitoring sensor fixing device according to any one of claims 1 to 2, characterized in that A connecting screw hole (11) that can be threadedly connected to a blasting vibration monitoring sensor is provided in the middle of the bottom plate (1), and / or a soft rope or soft belt (7) and a fixing mechanism (8) that can abut against the movable end of the soft rope or soft belt (7) are fixedly arranged at intervals on the surface of the bottom plate (1).

7. The portable blasting vibration monitoring sensor fixing device according to claim 6, wherein, At least two groups of soft ropes or soft belts (7) and fixing mechanisms (8) are cross-distributed on the surface of the bottom plate (1). The fixing mechanism (8) includes a bracket (81) and a screw (82). The bracket (81) is fixedly arranged on one side away from the fixed end of the soft rope or soft belt (7). The top of the bracket (81) is provided with a fixing screw hole and the lower part is provided with a through channel. The screw (82) threadedly engages and penetrates downward through the fixing screw hole of the bracket (81) and extends into the channel. The stud end of the screw (82) can abut against the bottom of the channel of the bracket (81).

8. The portable blasting vibration monitoring sensor fixing device according to claim 7, wherein, The soft rope or soft belt (7) is a strip-shaped soft rope or soft belt, and a number of soft teeth or anti-slip protrusions are distributed on the surface opposite to the screw (82).

9. The portable blasting vibration monitoring sensor fixing device according to claim 7, characterized in that, A groove or boss perpendicular to the opening direction of the channel is provided at the bottom of the channel of the bracket (81), and a locking table corresponding to the groove at the bottom of the channel or a locking groove corresponding to the boss is provided at the bottom end of the stud of the screw (82).

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