A vibration monitoring device for blasting tests

Abstract

This application relates to a vibration monitoring device for blasting tests, comprising a main unit and a sensor connected via signal transmission; it also includes a protective cover for enclosing the sensor, a sleeve coaxially disposed within the protective cover, a lifting rod slidably disposed within the sleeve along the height direction of the protective cover, and a return spring disposed within the sleeve. The return spring extends and retracts along the sliding direction of the lifting rod, one end of the return spring abutting against the inner wall of the sleeve, and the other end abutting against the bottom of the lifting rod, the return spring being used to push the lifting rod to maintain an elevated state; a pressure block is disposed at the bottom of the lifting rod, and the top of the lifting rod protrudes from the upper surface of the protective cover, with a placement frame disposed on the protruding lifting rod, the placement frame for holding a counterweight. This application ensures that the sensor is stably and securely fixed to the ground in the designated monitoring area, thereby ensuring the accuracy of the monitoring results.

Description

Technical Field

[0001] This application relates to the technical field of monitoring devices, and in particular to a vibration monitoring device for blasting tests. Background Technology

[0002] Currently, blasting vibration meters are specialized instruments used for monitoring blasting vibrations. Their working principle is as follows: blasting vibrations generate vibration signals. The dedicated three-dimensional vector sensor in the blasting vibration meter collects these signals. The instrument's main unit analyzes and stores the signals, calculating information such as the amplitude of the blasting vibration. The data is then imported into a computer and analyzed using specialized software to ensure that the vibrations are within the limits allowed by relevant national standards. Finally, a blasting vibration monitoring report is printed, completing one monitoring cycle. Blasting vibration meters are typically equipped with specialized analysis software that provides various analysis functions, including spectrum analysis, integration, differentiation, and vector synthesis. They also integrate Sadovsky's empirical formula to easily determine the safe blasting distance based on the permissible vibration velocity for different types of protected objects.

[0003] When installing the aforementioned three-dimensional vector sensor, plaster is typically used to rigidly connect it to the ground in the monitoring area. The porous structure of plaster can absorb some environmental vibrations, reducing the impact of external interference on data accuracy, making it particularly suitable for high-frequency vibration scenarios such as blasting. However, during the plaster's solidification process, the sensor is prone to displacement when subjected to blasting vibrations, making it difficult to stably and reliably fix the sensor to the designated monitoring area, ultimately reducing the accuracy of the monitoring results. Utility Model Content

[0004] This application provides a vibration monitoring device for blasting tests, which can ensure that the sensor is stably and reliably fixed on the ground of the designated monitoring area, thereby ensuring the accuracy of the monitoring results.

[0005] The vibration monitoring device for blasting tests provided in this application adopts the following technical solution: A vibration monitoring device for blasting tests includes an instrument host and a sensor connected by a signal; it also includes a protective cover for covering the sensor, a sleeve coaxially arranged inside the protective cover, a lifting rod slidably arranged inside the sleeve along the height direction of the protective cover, a return spring arranged inside the sleeve, the return spring extending and retracting along the sliding direction of the lifting rod, one end of the return spring abutting against the inner sidewall of the sleeve, and the other end of the return spring abutting against the bottom of the lifting rod, the return spring being used to push the lifting rod to maintain an elevated state; a pressure block is provided at the bottom of the lifting rod, and the top of the lifting rod protrudes from the upper surface of the protective cover, a placement frame is provided on the lifting rod after it protrudes, the placement frame being used to place a counterweight.

[0006] Preferably, a through hole is provided on the outer wall of the sleeve, and a connecting rod with a limit position is provided between the lifting rod and the pressure block, and the lifting rod is connected and fixed to the pressure block through the connecting rod.

[0007] Preferably, the outer side wall of the protective cover has a plurality of mounting ears arranged circumferentially, an extension frame is inserted and fixed on the mounting ears, a support rod is passed through the extension frame, a pipe clamp limiting component is detachably installed on the support rod, and the extension frame is placed on the pipe clamp limiting component; the end of the support rod is provided with a support platform for placing on the ground in the monitoring area.

[0008] Preferably, the end of the support rod away from the support platform is provided with a plug-in post.

[0009] Preferably, a connecting plate is provided between adjacent support rods.

[0010] Preferably, multiple rods are inserted and fixed on the connecting plate, and a placement platform mounted on top of the rods is provided on the top of the protective cover.

[0011] Preferably, a conduit is provided on the outer wall of the protective cover, and the instrument host and the sensor are transmitted through a cable, which is run through the conduit.

[0012] In summary, this application includes at least one of the following beneficial technical effects: Under the downward pressure of the pressure block, the sensor can be firmly pressed onto the ground of the monitoring area, ensuring the stability and reliability of the sensor before the plaster has completely solidified. This reduces the adverse effects of vibration waves on the sensor connection and ensures a rigid connection between the sensor and the ground of the monitoring area, thereby ensuring the accuracy of the monitoring results. Connecting and fixing adjacent support rods with connecting plates further improves the stability and reliability of the support rods. The support rods also act as a barrier around the protective cover, reducing the probability of workers stepping on the sensor and making the sensor's installation location more visible. By placing the main unit of the instrument on a platform and elevating it, it becomes easier for staff to operate the main unit. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 yes Figure 1 The top view highlights the bottom of the protective shield; Figure 3 yes Figure 2 A schematic diagram of a partial structural cross-section; Figure 4 This is a schematic diagram highlighting a portion of the sleeve and lifting rod.

[0014] Explanation of reference numerals in the attached drawings: 1. Main unit of the instrument; 2. Sensor; 3. Protective cover; 30. Mounting ear; 4. Sleeve; 40. Perforation; 5. Lifting rod; 50. Pressure block; 51. Placement frame; 52. Counterweight; 53. Connecting rod; 6. Return spring; 7. Extension frame; 70. Support rod; 700. Limiting ring; 71. Pipe clamp limiting component; 72. Support platform; 73. Insertion post; 74. Connecting plate; 75. Insertion rod; 76. Placement platform; 8. Conduit. Detailed Implementation

[0015] The present application will be further described in detail below with reference to the accompanying drawings.

[0016] This application discloses a vibration monitoring device for blasting tests.

[0017] Reference Figure 1 , Figure 2 The vibration monitoring device for blasting tests includes an instrument host 1 and a sensor 2 connected by wires. The sensor 2 can be a three-dimensional vector sensor. The energy generated by the blast propagates through the rock or soil in the form of vibration waves. The sensor 2 converts the physical quantity into an electrical signal, which is then amplified, filtered, and converted by an A / D converter to output a digital waveform. The monitored electrical signal is transmitted to the instrument host 1 via wires. The instrument host 1 may include electronic components with information processing capabilities, such as a processor and a microcontroller. In some cases, the instrument host 1 may also include a memory to store executable programs, allowing the instrument host 1 to process the measurement information from the sensor 2 according to the executable programs. In some cases, the instrument host 1 may also include a clock circuit to provide a clock signal to the instrument host 1, enabling the instrument host 1 to periodically process the monitoring information from the sensor 2 according to the clock signal.

[0018] like Figure 2 , Figure 3 As shown, it also includes a protective cover 3 for covering the outside of the sensor 2. The protective cover 3 can reduce the interference of the external environment on the detection results of the sensor 2 and protect the sensor 2. After the sensor 2 is cast onto the ground of the monitoring area with plaster, the sensor 2 is covered by the protective cover 3. A sleeve 4 is coaxially fixedly installed on the inner side wall of the top of the protective cover 3. A lifting rod 5 is slidably arranged inside the sleeve 4 along the height direction of the protective cover 3. A return spring 6 is arranged inside the sleeve 4. The return spring 6 extends and retracts along the sliding direction of the lifting rod 5. One end of the return spring 6 abuts against the inner side wall of the bottom of the sleeve 4, and the other end of the return spring 6 abuts against the bottom of the lifting rod 5. In its natural state, the return spring 6 is used to push the lifting rod 5 to slide upward and maintain the raised state.

[0019] like Figure 2 , Figure 3 As shown, the bottom of the lifting rod 5 is provided with a pressure block 50 facing the sensor 2, and the pressure block 50 is slidably sleeved on the outside of the sleeve 4. The top of the lifting rod 5 extends from the upper surface of the protective cover 3 to the outside of the protective cover 3, and a placement frame 51 is fixedly installed on the top of the lifting rod 5 after it extends out. The placement frame 51 is used to place the counterweight 52. After the counterweight 52 is removed from the placement frame 51, the lifting rod 5 will be lifted upward and reset under the elastic force of the return spring 6. At this time, the pressure block 50 and the sensor 2 remain separated from each other.

[0020] like Figure 3 , Figure 4 As shown, the outer wall of the sleeve 4 has multiple circumferentially arranged perforations 40. The lifting rod 5 and the pressure block 50 are fixedly connected by multiple connecting rods 53 that are limited within the perforations 40. The lifting rod 5 is connected and fixed to the pressure block 50 through the connecting rods 53.

[0021] By placing the counterweight 52 inside the mounting frame 51, the counterweight 52 will push the lifting rod 5 downward to compress the return spring 6. As the lifting rod 5 moves downward, the pressure block 50 will follow the lifting rod 5 and descend synchronously until the pressure block 50 contacts the top outer wall of the sensor 2. At this time, under the downward pressure of the pressure block 50, the sensor 2 can be firmly pressed onto the ground of the monitoring area, ensuring the stability and reliability of the sensor 2 before the plaster has completely solidified. This reduces the adverse effects of vibration waves on the connection of the sensor 2, ensures the rigid connection between the sensor 2 and the ground of the monitoring area, and thus ensures the accuracy of the monitoring results.

[0022] like Figure 2 , Figure 3 As shown, multiple mounting ears 30 are circumferentially arranged on the outer wall of the protective cover 3. An extension frame 7 is inserted and fixed from top to bottom on the mounting ears 30, and the length of the extension frame 7 extends radially along the protective cover 3. A support rod 70 is inserted through the end of the extension frame 7 away from the mounting ears 30. The support rod 70 is perpendicular to the extension frame 7, and the length of the support rod 70 is the same as the height of the protective cover 3. A pipe clamp limiting member 71 is detachably installed on the support rod 70. The pipe clamp limiting member 71 is made of plastic with a certain elastic deformation capability. One side of the pipe clamp limiting member 71 has a pipe opening with a width smaller than the width of the support rod 70. The pipe clamp limiting member 71 is inserted and fixed to the outside of the support rod 70 through the pipe opening, and the inner side wall of the pipe clamp limiting member 71 abuts against the outer side wall of the support rod 70.

[0023] like Figure 1 , Figure 2As shown, the extension frame 7 is mounted above its respective corresponding pipe clamp limiting members 71. A support platform 72 for placement on the ground in the monitoring area is fixedly installed at the end of the support rod 70. The outer radial direction of the support platform 72 gradually increases away from the support rod 70. An insert post 73 is integrally formed at the end of the support rod 70 away from the support platform 72. The insert post 73 can be driven into the soft soil of the monitoring area from top to bottom. By changing the installation orientation of the extension frame 7, the support platform 72 and the insert post 73 can be interchanged vertically.

[0024] like Figure 1 , Figure 2 As shown, a limit ring 700 is coaxially threaded onto the support rod 70. A horizontally arranged connecting plate 74 passes between two adjacent support rods 70, with both ends of the connecting plate 74 resting on their respective limit rings 700. The connecting plate 74 connects and fixes the two adjacent support rods 70, thereby further improving the stability and reliability of the support rods 70. The support rods 70 also act as a barrier around the protective cover 3, reducing the probability of workers stepping on the sensor 2 and making the installation position of the sensor 2 more conspicuous.

[0025] like Figure 1 , Figure 2 As shown, each connecting plate 74 has two rods 75 inserted and fixed from top to bottom. The rods 75 are perpendicular to the connecting plate 74. A placement platform 76, which is mounted and fixed on the top of the protective cover 3, is detachably installed on the top of the rods 75. A conduit 8 is fixed on the outer wall of the protective cover 3. The instrument host 1 and the sensor 2 are transmitted through a cable, which is run through the conduit 8. The instrument host 1 can be placed on the placement platform 76. By elevating the instrument host 1, it is easier for staff to operate the instrument host 1.

[0026] The implementation principle is as follows: By placing the counterweight 52 inside the placement frame 51, the counterweight 52 will push the lifting rod 5 downward to compress the return spring 6. As the lifting rod 5 moves downward, the pressure block 50 will follow the lifting rod 5 and descend synchronously until the pressure block 50 and the top outer wall of the sensor 2 come into contact with each other. At this time, under the downward pressure of the pressure block 50, the sensor 2 can be firmly pressed onto the ground of the monitoring area, ensuring the stability and reliability of the sensor 2 before the plaster has completely solidified, reducing the adverse effects of vibration waves on the connection of the sensor 2, ensuring the rigid connection between the sensor 2 and the ground of the monitoring area, thereby ensuring the accuracy of the monitoring results.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vibration monitoring device for blasting tests, comprising an instrument host (1) and a sensor (2) connected by a signal; characterized in that: It also includes a protective cover (3) for covering the outside of the sensor (2). A sleeve (4) is coaxially arranged inside the protective cover (3). A lifting rod (5) is slidably arranged inside the sleeve (4) along the height direction of the protective cover (3). A return spring (6) is arranged inside the sleeve (4). The return spring (6) extends and retracts along the sliding direction of the lifting rod (5). One end of the return spring (6) abuts against the inner side wall of the sleeve (4), and the other end of the return spring (6) abuts against the bottom of the lifting rod (5). The return spring (6) is used to push the lifting rod (5) to maintain the raised state. A pressure block (50) is arranged at the bottom of the lifting rod (5). The top of the lifting rod (5) protrudes from the upper surface of the protective cover (3). A placement rack (51) is arranged on the lifting rod (5) after it protrudes. A counterweight block (52) is placed inside the placement rack (51).

2. The vibration monitoring device for blasting tests according to claim 1, characterized in that: A through hole (40) is provided on the outer wall of the sleeve (4). A connecting rod (53) with a limit position is provided between the lifting rod (5) and the pressure block (50) in the through hole (40). The lifting rod (5) is connected and fixed to the pressure block (50) through the connecting rod (53).

3. The vibration monitoring device for blasting tests according to claim 1, characterized in that: The outer side wall of the protective cover (3) is circumferentially arranged with multiple mounting ears (30). An extension frame (7) is inserted and fixed on the mounting ears (30). A support rod (70) is passed through the extension frame (7). A pipe clamp limiting component (71) is detachably installed on the support rod (70). The extension frame (7) is placed on the pipe clamp limiting component (71). A support platform (72) for placing on the ground of the monitoring area is provided at the end of the support rod (70).

4. The vibration monitoring device for blasting tests according to claim 3, characterized in that: The end of the support rod (70) away from the support platform (72) is provided with a plug post (73).

5. The vibration monitoring device for blasting tests according to claim 4, characterized in that: A connecting plate (74) is provided between adjacent support rods (70).

6. The vibration monitoring device for blasting tests according to claim 5, characterized in that: Multiple rods (75) are fixedly inserted on the connecting plate (74), and a placement platform (76) is provided on the top of the rods (75) and mounted on the top of the protective cover (3).

7. The vibration monitoring device for blasting tests according to claim 1, characterized in that: A conduit (8) is provided on the outer wall of the protective cover (3). The instrument host (1) and the sensor (2) are transmitted through a cable, which is run through the conduit (8).

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