Device for monitoring dynamic response characteristics of anchoring surrounding rock under mechanical vibration load

Abstract

The invention relates to the technical field of coal mining, and discloses a device for monitoring dynamic response characteristics of anchoring surrounding rock under mechanical vibration load, which comprises a large-section chamber, the base, the mechanical equipment, the explosion-proof mobile power supply, the firm dynamic signal testing and analyzing system, the sensors, the bases and the protective covers are arranged in the large-section chamber, the number of the bases corresponds to that of the sensors, and stretching units are arranged among the bases. The method is favorable for comprehensively mastering the propagation attenuation law of stress waves in the anchoring surrounding rock under the mechanical vibration load, systematically reveals the damage evolution mechanism of the anchoring surrounding rock under the mechanical vibration load, can provide beneficial reference for long-time stable control of the surrounding rock of a deep large-section chamber group, has positive significance for realizing safe and efficient mining of a deep coal mine, and has a wide application prospect. And the method also has a relatively wide application prospect in the fields of water conservancy projects, deep resource development and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, and more specifically, it relates to a monitoring device for the dynamic response characteristics of anchored surrounding rock under mechanical vibration load. Background Art

[0002] In China, the distribution of coal resources varies greatly, and the mining conditions are extremely complex. Most resources are in the deep part. Under this background, in order to meet the development needs of large-scale, intensive, and intelligent mechanical equipment and environmental protection requirements such as no lifting of gangue and sewage to the ground, large-section chamber group projects are constantly emerging in deep coal mines. At present, in Chinese coal mines, bolt (cable) support is the main support form for surrounding rock. Affected by the superposition of factors such as "high stress, high pressure, high temperature, and one disturbance", "group cavity effect", and "excavation size effect", the long-term stability control of anchored surrounding rock in deep large-section chamber groups has been significantly improved. It is extremely difficult, especially dynamic load disturbance is likely to induce accelerated creep and failure instability of the anchored surrounding rock, posing a great threat to the safe and efficient coal mining.

[0003] At present, many experts and scholars have carried out extensive research on the damage and failure problems of anchored surrounding rock induced by dynamic load disturbance. However, the focus of related research mainly focuses on instantaneous impact loads generated by blasting, rock bursts, fault slips, etc. The research content mostly focuses on the failure and instability mechanism of anchored surrounding rock under impact loads and damage reduction control technologies, and less considers the long-term disturbance effect of mechanical vibration on anchored surrounding rock. However, data research and on-site monitoring results both show that the vibration load continuously generated during the operation of various large-scale mechanical equipment is also an important factor leading to the cracking and spalling of the shotcrete layer in deep large-section chamber groups, the aggravation of surrounding rock rupture, the attenuation of bolt pre-tightening force, and the deterioration of the bond at the anchoring interface. At present, the damage evolution mechanism of anchored surrounding rock in the complex stress environment of "high geostress + mechanical vibration load" is not clear. Based on this, an inversion prediction method for the dynamic response characteristics of anchored surrounding rock under mechanical vibration load is proposed, which has important practical significance for analyzing the propagation and attenuation law of stress waves in anchored surrounding rock under mechanical vibration load, revealing the damage evolution mechanism of anchored surrounding rock under mechanical vibration load, and developing long-term stability control technologies for anchored surrounding rock under mechanical vibration load.

[0004] Although the existing technical solutions systematically monitor mechanical vibration, in the actual operation process, due to the need to set multiple points or multiple surfaces for monitoring, during the monitoring process, it is necessary to measure the positions of the marked points multiple times, which is time-consuming and laborious, and during the manual measurement process, position deviation is likely to occur. Especially, most of the monitoring point positions are not set on the ground, increasing the measurement difficulty for the staff. Summary of the Invention

[0005] The present invention provides a monitoring device for the dynamic response characteristics of anchored surrounding rock under mechanical vibration loads, which solves the technical problems in the prior art that during multi-point monitoring, manual ranging needs to be carried out multiple times and the installation of the protective cover for the sensor is relatively inconvenient during use.

[0006] The present invention provides a monitoring device for the dynamic response characteristics of anchored surrounding rock under mechanical vibration loads, including a large-section chamber, and a base, mechanical equipment, explosion-proof mobile power supply, rugged dynamic signal test and analysis system, multiple sensors and a corresponding number of pedestals, and multiple protective covers arranged in the large-section chamber; a stretching unit is arranged between the multiple pedestals;

[0007] The stretching unit includes multiple positioning columns, multiple fixing frames, positioning rings with the same number as the positioning columns, and multiple folding frames. The bottom of each positioning column is fixedly connected to the inner wall of the large-section chamber. Positioning rings are fixedly connected to the outer walls of the two fixing frames closest to the positioning columns among the multiple fixing frames, and the positioning rings are sleeved with the corresponding positioning columns. Folding frames are movably connected to the opposite sides of the multiple fixing frames. The ultimate stretching length of the folding frame close to the base is a first set length, and the ultimate stretching length of the folding frame far from the base is a second set length.

[0008] Preferably, the first set length is set to 2 m, and the second set length is set to 3 m.

[0009] Preferably, a stabilizing mechanism is arranged at the connection between each protective cover and the corresponding pedestal, a verification mechanism is arranged on the side wall of the protective cover, an adsorption mechanism is arranged on each pedestal, an arc-shaped groove is opened at the top of the protective cover, and a clamping mechanism is arranged in the arc-shaped groove.

[0010] Preferably, one end of the folding frame close to the fixing frame is rotatably connected to the fixing frame, a limiting block is fixedly connected to the other end of the folding frame, a limiting groove is opened on the fixing frame, and the limiting block is movably clamped in the limiting groove.

[0011] Preferably, a bracket is arranged on the stretching unit, the bottom of the bracket is fixedly connected to the folding frame close to the protective cover, two push-pull rods are rotatably connected in the bracket, a fixed block is fixedly connected to the side wall of the protective cover, and the side wall of the push-pull rod is movably hinged to the fixed block.

[0012] Preferably, the stabilizing mechanism includes multiple rectangular grooves, each rectangular groove is opened on the side wall of the pedestal, a limiting rod is fixedly connected to the inner wall of the rectangular groove, two limiting cylinders are sleeved on the limiting rod, the outer wall of the limiting cylinder is fixedly connected to the inner wall of the protective cover, a support spring is movably sleeved on the limiting rod, one end of the support spring is fixedly connected to the limiting cylinder, and the other end of the support spring is fixedly connected to the inner side wall of the rectangular groove.

[0013] Preferably, the verification mechanism includes a guiding block. The side wall of the guiding block is fixedly connected to the outer wall of the protective cover, and the cross-section of the guiding block is trapezoidal. A guiding groove is opened at the bottom of the guiding block. A lifting plate is movably clamped in the guiding groove. Two reset springs are symmetrically and fixedly connected to the top of the lifting plate. The top ends of the reset springs are fixedly connected to the guiding block. A monitoring box is fixedly connected to the outer wall of the lifting plate. A through groove is opened on the base, and the through groove is arranged directly below the monitoring box. An alarm is fixedly installed on the inner top surface of the monitoring box. A circular magnet is arranged directly below the alarm. Clamping rods are symmetrically and fixedly connected to the inner side wall of the monitoring box, and the side walls of the clamping rods are fixedly connected to the circular magnet. Two vertical rods are fixedly connected to the inner wall of the monitoring box, and the vertical rods are arranged inside the circular magnet. A sliding cylinder is movably sleeved on the vertical rods. A monitoring magnet is fixedly connected to the sliding cylinder. A plurality of through holes are opened on the top wall of the monitoring box.

[0014] Preferably, the adsorption mechanism includes movable grooves. Movable grooves are symmetrically opened at the top of the base. A limiting channel is opened downward at the bottom of the movable groove. A pressing block is arranged in the movable groove. The top of the pressing block is fixedly connected to the bottom of the protective cover. A sliding groove is opened at the bottom of the pressing block. The top of a sliding block is movably clamped in the sliding groove. The bottom of the sliding block is fixedly connected to a lifting frame. The lifting frame is arranged in the limiting channel. A suction cup is fixedly connected to the bottom of the lifting frame.

[0015] Preferably, the clamping mechanism includes a support cylinder. The support cylinder is fixedly inserted inside the arc-shaped groove. Slide rails are symmetrically opened on the inner side wall of the support cylinder. A sliding plate is movably clamped in the slide rails. One side wall of the sliding plate is fixedly connected to a support rod. The side end of the support rod extends movably into the arc-shaped groove. The side end of the support rod is fixedly connected to a clamping plate. The other side wall of the sliding plate is fixedly connected to a compression spring. The side end of the compression spring is fixedly connected to the inner wall of the support cylinder.

[0016] Preferably, the bottom of the sensor is movably connected to the top of the base. A data transmission line is installed on the top of the sensor. The side end of the data transmission line is movably installed on a rugged dynamic signal test and analysis system. The protective cover is arranged on the base, and the number of protective covers arranged is twice that of the base.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention adopts the technical means of cooperating the stretching unit with the base. By using the fixed-length stretching of multiple folding frames to fix points for measuring distances, the position of the sensor can be quickly fixed, overcoming the technical deficiencies in the prior art that multiple distance measurements are required during monitoring and the distance measurement is prone to deviation. Furthermore, it achieves the technical effect of directly installing and monitoring the sensor without measurement, with more accurate positioning and more convenient operation. And during the stretching process of the folding frame, the protective cover is closed by using the bracket and the push-pull rod in cooperation, overcoming the technical deficiency in the prior art that the protective cover needs to be installed by bolts. Furthermore, it achieves the technical effect of quickly installing the protective cover without manual effort.

[0019] 2. The present invention adopts the technical means of mutual cooperation among the limit rod, the limit cylinder and the support spring, overcomes the technical deficiency of poor movement stability of the protective cover in the prior art, and further realizes the technical effects of stable displacement of the protective cover and more accurate closing alignment, so that the anti-touch protection effect of the protective cover on the sensor is better.

[0020] 3. The present invention adopts the technical means of mutual cooperation among the monitoring box, the ring magnet, the monitoring magnet and the alarm, overcomes the technical deficiency in the prior art that only relies on the sensor to cooperate with the rugged dynamic signal test and analysis system for data analysis, and when a certain group of sensors among multiple sensors falls off or is damaged, the monitoring cannot continue, and further realizes the technical effects of verifying the working state of the sensor, being able to detect and solve problems in time, so that the overall monitoring process can proceed in an orderly manner.

[0021] 4. The present invention adopts the technical means of mutual cooperation among the pressing block, the sliding block and the suction cup, overcomes the technical deficiency of directly installing the bolts on the base in the prior art, and further realizes the technical effects that during the installation of the base on both side walls and the top wall inside the large-section chamber, the base can be preliminarily positioned by the suction cup, the positioning is more convenient, and the installation of the base is more stable and accurate.

[0022] 5. The present invention adopts the technical means of mutual cooperation among the sliding plate, the support rod, the clamping plate and the compression spring, overcomes the technical deficiency in the prior art that the protective cover does not protect the data transmission line, and during the mechanical equipment vibration monitoring process, the data transmission line is prone to fall off, and further realizes the technical effects that the data transmission line is installed stably and the sensor monitoring is more stable.

[0023] 6. The present invention helps to comprehensively master the propagation and attenuation law of stress waves in the anchored surrounding rock under mechanical vibration loads, systematically reveals the damage evolution mechanism of the anchored surrounding rock under mechanical vibration loads, can provide a useful reference for the long-term stability control of the surrounding rock of deep large-section chamber groups, has positive significance for realizing safe and efficient mining of deep coal mines, and also has a relatively broad application prospect in the fields of water conservancy projects, deep resource development, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structural schematic diagram of the present invention;

[0025] Figure 2 is the top-view structural schematic diagram of the present invention in the inductive state of the stretching unit;

[0026] Figure 3 is the top-view structural schematic diagram of the present invention in the stretched state of the stretching unit;

[0027] Figure 4 is the connection structural schematic diagram of the protective cover and the base of the present invention;

[0028] Figure 5 It is a schematic top view of the inside of the base when the protective cover of the present invention is connected to the base;

[0029] Figure 6 It is a schematic structural view of the present invention when the protective cover is in the unfolded state;

[0030] Figure 7 It is a schematic structural view of the inside of the monitoring box of the present invention;

[0031] Figure 8 It is a schematic overall structural view of the adsorption mechanism of the present invention;

[0032] Figure 9 It is a schematic top view of the top of the clamping assembly of the present invention.

[0033] In the figure: 1. Large-section chamber; 2. Base; 3. Mechanical equipment; 4. Explosion-proof mobile power supply; 5. Robust dynamic signal test and analysis system; 6. Sensor; 601. Data transmission line; 7. Base; 701. Through groove; 8. Tensile unit; 81. Positioning column; 82. Fixed frame; 83. Positioning ring; 84. Limit groove; 85. Folding frame; 86. Limit block; 9. Protective cover; 901. Arc groove; 10. Bracket; 11. Fixed block; 12. Push-pull rod; 13. Stabilizing mechanism; 131. Rectangular groove; 132. Limit rod; 133. Limit cylinder; 134. Support spring; 14. Verification mechanism; 141. Guide block; 142. Guide groove; 143. Lifting plate; 144. Return spring; 145. Monitoring box; 146. Alarm; 147. Ring magnet; 148. Clamping rod; 149. Vertical rod; 1410. Slide cylinder; 1411. Monitoring magnet; 1412. Through hole; 15. Adsorption mechanism; 151. Movable groove; 152. Limit channel; 153. Pressing block; 154. Slide groove; 155. Slide block; 156. Lifting frame; 157. Suction cup; 16. Clamping mechanism; 161. Support cylinder; 162. Slide rail; 163. Slide plate; 164. Support rod; 165. Clamping plate; 166. Compression spring. Detailed implementation manners

[0034] Now, the subject matter described herein will be discussed with reference to exemplary embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described in some examples can also be combined in other examples.

[0035] As Figure 1 - Figure 9As shown in the figure, this embodiment provides a monitoring device for the dynamic response characteristics of anchored surrounding rock under mechanical vibration loads, including a large-section chamber 1, as well as a base 2, mechanical equipment 3, explosion-proof mobile power supply 4, rugged dynamic signal test and analysis system 5, multiple sensors 6 and corresponding numbers of pedestals 7, and multiple protective covers 9 arranged in the large-section chamber 1; A stretching unit 8 is arranged between the multiple pedestals 7;

[0036] The stretching unit 8 includes multiple positioning columns 81, multiple fixing frames 82, positioning rings 83 with the same number as the positioning columns 81, and multiple folding frames 85. The bottom of each positioning column 81 is fixedly connected to the inner wall of the large-section chamber 1. Positioning rings 83 are fixedly connected to the outer walls of the two fixing frames 82 closest to the positioning column 81. The positioning rings 83 are sleeved with the corresponding positioning columns 81. Folding frames 85 are movably connected to the opposite sides of the multiple fixing frames 82. The ultimate stretching length of the folding frame 85 close to the base 2 is the first set length, and the ultimate stretching length of the folding frame 85 far from the base 2 is the second set length.

[0037] In the present embodiment, the usage process of the monitoring device for the dynamic response characteristics of anchored surrounding rock under mechanical vibration loads is as follows: The first set length is 2m, and the second set length is 3m.

[0038] It should be noted that one end of the folding frame 85 close to the fixing frame 82 is rotatably connected to the fixing frame 82, and a limiting block 86 is fixedly connected to the other end of the folding frame 85. A limiting groove 84 is formed in the fixing frame 82, and the limiting block 86 is movably clamped in the limiting groove 84.

[0039] It should be noted that a bracket 10 is arranged on the stretching unit 8. The bottom of the bracket 10 is fixedly connected to the folding frame 85 close to the protective cover 9. Two push rods 12 are rotatably connected in the bracket 10. A fixing block 11 is fixedly connected to the side wall of the protective cover 9, and the side wall of the push rod 12 is movably hinged to the fixing block 11.

[0040] The working principle and beneficial effects of the above technical solution are:

[0041] Working principle: During the use of the present invention, the mechanical equipment 3 to be monitored is pre-placed on the base 2. Two points are measured on the inner walls of the large-section chamber 1, and the measured straight-line distance is 8 m. Positioning columns 81 are fixedly connected to both points. The positioning columns 81 are fixedly installed to facilitate the measurement of multiple different mechanical equipment 3 in the later stage. The positioning columns 81 are used in cooperation with the positioning rings 83 to quickly extend multiple folding frames 85, and the corresponding distances of the first set length and the second set length can be changed according to actual applications. By adjusting the length distance of the limiting groove 84, the first set length and the second set length can be changed. Multiple sensors 6 are adsorbed on the corresponding bases 7 one by one by magnets. When the multiple folding frames 85 are in the fitting state, the protective covers 9 are in the separated state, which is convenient for quickly installing the sensors 6 on the bases 7. During the extension process of the multiple folding frames 85, the folding frames 85 drive the brackets 10 away from the sensors 6, and the brackets 10 drive the two push-pull rods 12 to approach each other, so that the protective covers 9 approach each other until they are closed, providing anti-touch protection for the sensors 6.

[0042] Beneficial effects: The present invention adopts the technical means of cooperating the stretching unit 8 and the base 7, and uses the fixed-length extension of multiple folding frames 85 to fix points for the measurement distance, so that the positions of the sensors 6 are quickly fixed, overcoming the technical deficiencies in the prior art that multiple distance measurements are required during monitoring and the distance measurement is prone to deviation. Furthermore, it achieves the technical effect of directly installing and monitoring the sensors 6 without measurement, with more accurate positioning and more convenient operation. And during the stretching process of the folding frames 85, the brackets 10 and the push-pull rods 12 are used in cooperation to close the protective covers 9, overcoming the technical deficiency in the prior art that the protective covers 9 need to be installed by bolts. Furthermore, it achieves the technical effect of quickly installing the protective covers 9 without manual effort.

[0043] In a specific embodiment: The stabilizing mechanism 13 includes a plurality of rectangular grooves 131, each rectangular groove 131 is opened on the side wall of the base 7, a limiting rod 132 is fixedly connected to the inner wall of the rectangular groove 131, two limiting cylinders 133 are sleeved on the limiting rod 132, the outer wall of the limiting cylinder 133 is fixedly connected to the inner wall of the protective cover 9, a support spring 134 is movably sleeved on the limiting rod 132, one end of the support spring 134 is fixedly connected to the limiting cylinder 133, and the other end of the support spring 134 is fixedly connected to the inner side wall of the rectangular groove 131.

[0044] The working principle and beneficial effects of the above technical solution are as follows:

[0045] Working principle: During the use of the present invention, by setting the limiting cylinders 133 fixedly connected to the inner wall of the protective cover 9, as the protective cover 9 moves, it slides on the limiting rod 132, and a support spring 134 is provided to elastically support the limiting cylinders 133.

[0046] Beneficial effects: The present invention adopts the technical means of the cooperation of the limit rod 132, the limit cylinder 133 and the support spring 134, overcomes the technical deficiency of the poor moving stability of the protective cover 9 in the prior art, and further realizes the technical effects of the stable displacement of the protective cover 9 and more accurate closing alignment, so that the anti-touch protection effect of the protective cover 9 on the sensor 6 is better.

[0047] In a specific embodiment: The verification mechanism 14 includes a guide block 141, the side wall of the guide block 141 is fixedly connected to the outer wall of the protective cover 9, and the cross-section of the guide block 141 is trapezoidal, a guide groove 142 is opened at the bottom of the guide block 141, a lifting plate 143 is movably clamped in the guide groove 142, two reset springs 144 are symmetrically and fixedly connected to the top of the lifting plate 143, the top ends of the reset springs 144 are fixedly connected to the guide block 141, a monitoring box 145 is fixedly connected to the outer wall of the lifting plate 143, a through groove 701 is opened on the base 7, and the through groove 701 is arranged directly below the monitoring box 145. An alarm 146 is fixedly installed on the inner top surface of the monitoring box 145, a circular magnet 147 is arranged directly below the alarm 146, clamping rods 148 are symmetrically and fixedly connected to the inner side wall of the monitoring box 145, the side walls of the clamping rods 148 are fixedly connected to the circular magnet 147, two vertical rods 149 are fixedly connected to the inner wall of the monitoring box 145, and the vertical rods 149 are arranged inside the circular magnet 147. A sliding cylinder 1410 is movably sleeved on the vertical rod 149, a monitoring magnet 1411 is fixedly connected to the sliding cylinder 1410, and a plurality of through holes 1412 are opened on the top wall of the monitoring box 145.

[0048] The working principle and beneficial effects of the above technical solution are as follows:

[0049] Working principle: During the use of the present invention, through the closing movement of the protective cover 9, the guide blocks 141 approach each other, the lifting plate 143 is subjected to a squeezing force, and under the guidance of the guide groove 142, it moves downward. The lifting plate 143 pushes the monitoring box 145 downward until the protective cover 9 is completely closed, and the bottom of the monitoring box 145 abuts against the inner wall of the large-section chamber 1. During the monitoring process, the mechanical equipment 3 generates vibrations, and the vibrations generate forces, which push the monitoring magnet 1411 to move up and down reciprocally in the monitoring box 145. When the vibration force exceeds the pre-set vibration limit, the force received by the monitoring magnet 1411 is greater than the repulsive force exerted by the circular magnet 147, so it passes through the circular magnet 147 and hits the alarm 146 upward, emitting an alarm.

[0050] Beneficial effects: The present invention adopts the technical means of mutual cooperation among the monitoring box 145, the ring magnet 147, the monitoring magnet 1411 and the alarm 146, overcoming the technical deficiency in the prior art that only relies on the sensor 6 to cooperate with the rugged dynamic signal test and analysis system 5 for data analysis, and when a certain group of sensors 6 among the multiple sensors 6 falls off or is damaged, monitoring cannot continue. Furthermore, it realizes the technical effect of verifying the working state of the sensor 6, being able to discover and solve problems in a timely manner, so that the overall monitoring process can proceed in an orderly manner.

[0051] In a specific embodiment: The adsorption mechanism 15 includes a movable groove 151. The top of the base 7 is symmetrically provided with movable grooves 151. A limiting channel 152 is opened downward at the bottom of the movable groove 151. A pressing block 153 is arranged in the movable groove 151. The top of the pressing block 153 is fixedly connected to the bottom of the protective cover 9. A sliding groove 154 is opened at the bottom of the pressing block 153. The top of a sliding block 155 is movably clamped in the sliding groove 154. The bottom of the sliding block 155 is fixedly connected to a lifting frame 156. The lifting frame 156 is arranged in the limiting channel 152. A suction cup 157 is fixedly connected to the bottom of the lifting frame 156.

[0052] The working principle and beneficial effects of the above technical solution are as follows:

[0053] Working principle: During the use of the present invention, the mutual approach of the protective covers 9 drives the pressing block 153 to move. The pressing block 153 drives the sliding block 155 to move through the sliding groove 154 opened at the bottom. Since the bottom of the sliding block 155 is fixedly connected to the lifting frame 156, restricted by the position of the limiting channel 152, the lifting frame 156 moves downward as the pressing blocks 153 approach each other. The downward movement of the lifting frame 156 presses the suction cup 157 against the inner wall of the large-section chamber 1, and squeezes out the air inside the suction cup 157, making the suction cup 157 tightly adsorb on the inner wall of the large-section chamber 1, quickly supporting the base 7, and making it more convenient to install the base 7 on the inner wall of the large-section chamber 1 through expansion bolts for monitoring work.

[0054] Beneficial effects: The present invention adopts the technical means of mutual cooperation among the pressing block 153, the sliding block 155 and the suction cup 157, overcoming the technical deficiency of directly installing the bolts of the base 7 in the prior art. Furthermore, it realizes the technical effect that during the installation process of the base 7 on the two side walls and the top wall inside the large-section chamber 1, the suction cup 157 can be used to preliminarily position the base 7, the positioning is more convenient, and the installation of the base 7 is more stable and accurate.

[0055] In a specific embodiment: The clamping mechanism 16 includes a support cylinder 161. The support cylinder 161 is fixedly inserted into the internal part of the arc-shaped groove 901. Slide rails 162 are symmetrically formed on the inner side wall of the support cylinder 161. A slide plate 163 is movably clamped in the slide rails 162. A support rod 164 is fixedly connected to one side wall of the slide plate 163. The side end of the support rod 164 extends out of the arc-shaped groove 901 in a movable manner. A clamping plate 165 is fixedly connected to the side end of the support rod 164. A compression spring 166 is fixedly connected to the other side wall of the slide plate 163. The side end of the compression spring 166 is fixedly connected to the inner wall of the support cylinder 161.

[0056] The working principle and beneficial effects of the above technical solution are as follows:

[0057] Working principle: During the use of the present invention, the sensor 6 is installed in the base 7. The data transmission line 601 extends outwards through the arc-shaped groove 901 formed at the top of the protective cover 9 and is connected to the rugged dynamic signal test and analysis system 5. By providing the clamping mechanism 16 to protect the data transmission line 601, under the elastic support of the compression spring 166, the slide plate 163 is pushed to move. The clamping plate 165 is abutted against the outer wall of the data transmission line 601 through the support rod 164, and the data transmission line 601 is quickly clamped by the two clamping plates 165.

[0058] Beneficial effects: The present invention adopts the technical means of the mutual cooperation of the slide plate 163, the support rod 164, the clamping plate 165 and the compression spring 166, overcomes the technical deficiency that the protective cover 9 in the prior art does not protect the data transmission line 601 and the data transmission line 601 is prone to falling off during the vibration monitoring of the mechanical equipment 3, and further realizes the technical effects of the stable installation of the data transmission line 601 and the more stable monitoring of the sensor 6.

[0059] The embodiments of the present invention are described above, but the embodiments are not limited to the above specific embodiments. The above specific embodiments are only illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A monitoring device for the dynamic response characteristics of anchored surrounding rock under mechanical vibration load, comprising a large-section chamber (1), as well as a base (2), mechanical equipment (3), explosion-proof mobile power supply (4), rugged dynamic signal test and analysis system (5), multiple sensors (6), and pedestals (7) provided in corresponding numbers, and multiple protective covers (9) arranged in the large-section chamber (1), characterized in that: A stretching unit (8) is arranged between multiple bases (7); The stretching unit (8) includes multiple positioning columns (81), multiple fixing frames (82), positioning rings (83) with the same number as the positioning columns (81), and multiple folding frames (85). The bottom of each positioning column (81) is fixedly connected to the inner wall of the large-section chamber (1). Positioning rings (83) are fixedly connected to the outer walls of the two fixing frames (82) closest to the positioning columns (81) among the multiple fixing frames (82). The positioning rings (83) are sleeved on the corresponding positioning columns (81). Folding frames (85) are movably connected to the opposite sides of the multiple fixing frames (82). The ultimate stretching length of the folding frame (85) close to the base (2) is a first set length, and the ultimate stretching length of the folding frame (85) far from the base (2) is a second set length.

2. The monitoring device for the dynamic response characteristics of the anchored surrounding rock under mechanical vibration loads according to claim 1, characterized in that, The first set length is set to 2m, and the second set length is set to 3m.

3. The monitoring device for the dynamic response characteristics of the anchored surrounding rock under mechanical vibration load according to claim 1, characterized in that A stabilizing mechanism (13) is arranged at the connection between each protective cover (9) and the corresponding base (7). A verification mechanism (14) is arranged on the side wall of the protective cover (9). An adsorption mechanism (15) is arranged on each base (7). An arc-shaped groove (901) is opened at the top of the protective cover (9), and a clamping mechanism (16) is arranged in the arc-shaped groove (901).

4. The monitoring device for the dynamic response characteristics of an anchored surrounding rock under mechanical vibration loads according to claim 1, wherein One end of the folding frame (85) close to the fixing frame (82) is rotatably connected to the fixing frame (82). Limit blocks (86) are fixedly connected to the other ends of the folding frames (85). Limit grooves (84) are opened on the fixing frames (82), and the limit blocks (86) are movably clamped in the limit grooves (84).

5. The monitoring device for the dynamic response characteristics of anchored surrounding rock under mechanical vibration load according to claim 4, wherein A bracket (10) is arranged on the stretching unit (8). The bottom of the bracket (10) is fixedly connected to the folding frame (85) close to the protective cover (9). Two push-pull rods (12) are rotatably connected in the bracket (10). A fixed block (11) is fixedly connected to the side wall of the protective cover (9), and the side wall of the push-pull rod (12) is movably hinged to the fixed block (11).

6. The monitoring device for the dynamic response characteristics of an anchored surrounding rock under a mechanical vibration load according to claim 3, characterized in that The stabilizing mechanism (13) includes multiple rectangular grooves (131). Each rectangular groove (131) is opened on the side wall of the base (7). A limiting rod (132) is fixedly connected to the inner wall of the rectangular groove (131). Two limiting cylinders (133) are sleeved on the limiting rod (132). The outer walls of the limiting cylinders (133) are fixedly connected to the inner wall of the protective cover (9). A supporting spring (134) is movably sleeved on the limiting rod (132). One end of the supporting spring (134) is fixedly connected to the limiting cylinder (133), and the other end of the supporting spring (134) is fixedly connected to the inner side wall of the rectangular groove (131).

7. The monitoring device for the dynamic response characteristics of anchored surrounding rock under mechanical vibration load according to claim 3, wherein The verification mechanism (14) includes a guide block (141), the side wall of the guide block (141) is fixedly connected to the outer wall of the protective cover (9), and the cross-section of the guide block (141) is trapezoidal. A guide groove (142) is opened at the bottom of the guide block (141), and a lifting plate (143) is movably clamped in the guide groove (142). Two return springs (144) are symmetrically and fixedly connected to the top of the lifting plate (143), and the top ends of the return springs (144) are fixedly connected to the guide block (141). A monitoring box (145) is fixedly connected to the outer wall of the lifting plate (143). A through groove (701) is opened on the base (7), and the through groove (701) is arranged directly below the monitoring box (145). An alarm (146) is fixedly installed on the inner top surface of the monitoring box (145). A circular magnet (147) is arranged directly below the alarm (146). Clamping rods (148) are symmetrically and fixedly connected to the inner side wall of the monitoring box (145), and the side walls of the clamping rods (148) are fixedly connected to the circular magnet (147). Two vertical rods (149) are fixedly connected to the inner wall of the monitoring box (145), and the vertical rods (149) are arranged inside the circular magnet (147). A sliding cylinder (1410) is movably sleeved on the vertical rods (149), and a monitoring magnet (1411) is fixedly connected to the sliding cylinder (1410). A plurality of through holes (1412) are opened on the top wall of the monitoring box (145).

8. The monitoring device for the dynamic response characteristics of anchored surrounding rock under mechanical vibration load according to claim 3, characterized in that, The adsorption mechanism (15) includes movable grooves (151), and movable grooves (151) are symmetrically opened at the top of the base (7). A limiting channel (152) is opened downward at the bottom of the movable groove (151). A pressing block (153) is arranged in the movable groove (151), and the top of the pressing block (153) is fixedly connected to the bottom of the protective cover (9). A sliding groove (154) is opened at the bottom of the pressing block (153), and the top of a slider (155) is movably clamped in the sliding groove (154). The bottom of the slider (155) is fixedly connected to a lifting frame (156), and the lifting frame (156) is arranged in the limiting channel (152). A suction cup (157) is fixedly connected to the bottom of the lifting frame (156).

9. The monitoring device for the dynamic response characteristics of the anchored surrounding rock under mechanical vibration load according to claim 3, characterized in that, The clamping mechanism (16) includes a support cylinder (161), and the support cylinder (161) is fixedly inserted inside the arc-shaped groove (901). Slide rails (162) are symmetrically opened on the inner side wall of the support cylinder (161), and a sliding plate (163) is movably clamped in the slide rails (162). A support rod (164) is fixedly connected to one side wall of the sliding plate (163), and the side end of the support rod (164) extends movably into the arc-shaped groove (901). A clamping plate (165) is fixedly connected to the side end of the support rod (164). A compression spring (166) is fixedly connected to the other side wall of the sliding plate (163), and the side end of the compression spring (166) is fixedly connected to the inner wall of the support cylinder (161).

10. The monitoring device for the dynamic response characteristics of the anchored surrounding rock under mechanical vibration loads according to claim 1, wherein, The bottom of the sensor (6) is movably connected to the top of the base (7). A data transmission line (601) is installed on the top of the sensor (6). The side end of the data transmission line (601) is movably installed on the rugged dynamic signal test and analysis system (5). The protective cover (9) is arranged on the base (7), and the number of protective covers (9) arranged is twice that of the base (7).

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