Experimental device for simulating drop hammer underwater rock breaking

Abstract

The utility model provides an experimental device for simulating drop hammer underwater rock breaking, which comprises a peripheral box body, an experimental water tank arranged on the peripheral box body, an experimental table arranged at the bottom of the experimental water tank and used for fixing a sample, and a water delivery system arranged on the outer side of the experimental water tank, the water conveying system comprises a conveying part and a water conveying pipe arranged at the output end of the conveying part and used for conveying water into the experimental water tank; the sea wave simulation system comprises a sea wave plate power mechanism arranged on one side in the experiment water tank and used for simulating sea wave loads and a wave dissipation mechanism arranged on the other side in the experiment water tank and used for absorbing the sea wave loads; the servo power system is arranged at the top of the experimental water tank and is used for driving the hammer body to move; the rock breaking efficiency of the hammer body under different water depths and sea wave loads can be tested, and the influence of different rock masses and hammer shapes and different falling speeds of the hammer body on sample breaking can be researched.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater rock-breaking experiments, and particularly relates to an experimental device for simulating underwater rock-breaking by a drop hammer. Background Art

[0002] With the prosperous development of ship transportation, cargo ships between ports travel back and forth more and more frequently, the freight volume continues to increase, and the requirements for the water depth of the waterway are becoming more and more strict. The existence of seabed reefs poses a hidden danger to the safe navigation of super-large cargo ships, seriously restricting the development of ports. In order to widen and deepen the sea area near the port, methods such as mechanical rock-breaking and explosive rock-breaking have emerged one after another. Among them, the method of using a rock drill to carry out mechanical rock-breaking has less disturbance and pollution to the marine environment, can meet the control requirements of the marine ecosystem, and thus better protect the marine ecological environment.

[0003] Disadvantages of the existing device: 1. The current drop hammer experiment cannot simulate the rock-breaking process of the hammer body in the underwater environment; 2. The current drop hammer experiment cannot explore the influence of different water depths and wave loads on the rock-breaking of the drop hammer; 3. The current drop hammer experiment cannot explore the influence of different hammer body weights and shapes on the rock-breaking efficiency. Therefore, it is necessary to design an experimental device for simulating underwater rock-breaking by a drop hammer to solve the above technical problems. Content of the Utility Model

[0004] The utility model provides an experimental device for simulating underwater rock-breaking by a drop hammer. The experimental device can inject water into the experimental tank to simulate the underwater environment, and provide a wave plate to simulate the wave load. At the same time, different initial momenta can be applied to the drop hammer to provide different falling speeds for the hammer body. In addition, the hammer body in the drop hammer system can be disassembled and replaced to study the rock-breaking effects of different hammer bodies.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An experimental device for simulating underwater rock-breaking by a drop hammer, including an outer box body, an experimental water tank arranged on the outer box body, and an experimental table arranged at the bottom of the experimental water tank for fixing a specimen, and further including:

[0007] A water delivery system, the water delivery system is arranged outside the experimental water tank, and the water delivery system includes a delivery part and a water delivery pipe arranged at the output end of the delivery part for delivering water into the experimental water tank;

[0008] A sea wave simulation system, the sea wave simulation system includes a sea wave plate power mechanism arranged on one side inside the experimental water tank for simulating the sea wave load and a wave dissipation mechanism arranged on the other side inside the experimental water tank for absorbing the sea wave load;

[0009] A servo power system, the servo power system is arranged on the top of the experimental water tank for driving the hammer body to move; and

[0010] A drainage system for draining water from the experimental water tank.

[0011] Preferably, the experimental device for simulating underwater rock breaking by a drop hammer further includes a central control system; an acoustic emission system is also provided on the experimental bench.

[0012] Preferably, the wave plate power mechanism includes a power part and a wave plate arranged at the output end of the power part and located inside the experimental water tank; the power part can drive the wave plate to vibrate inside the experimental water tank.

[0013] Preferably, the wave damping mechanism includes a wave damping plate arranged inside the experimental water tank relative to the wave plate and a spring group for fixing the wave damping plate.

[0014] Preferably, the servo power system includes a slide rail, a fixing device slidably arranged on the slide rail and used for fixing the hammer body, a servo drive source for driving the hammer body to move along the slide rail, and a lifting mechanism arranged on the fixing device for realizing the falling or lifting of the hammer body.

[0015] Preferably, the fixing device and the hammer body are detachably connected by bolts.

[0016] Preferably, a lead screw is provided at the output end of the servo drive source, and the fixing device is arranged on the lead screw through a lead screw nut.

[0017] Preferably, the lifting mechanism includes a winding drum arranged on the fixing device and used for winding or releasing the towing rope on the hammer body.

[0018] Preferably, the drainage system includes a drainage part and a drain pipe arranged at the input end of the drainage part and extending into the experimental water tank; a water level sensor is also provided on the inner wall of the experimental water tank.

[0019] Preferably, safety nets are also provided inside the experimental water tank on both sides of the experimental bench.

[0020] As can be seen from the above technical solutions, the present utility model has the following beneficial effects: In the present utility model, remove the experimental box cover, place and fix the specimen on the experimental bench, install the selected hammer body on the fixing device on the slide rail, and fix the hammer body. Then, install the experimental box cover back. Inject water into the experimental water tank through the water supply system to the set water level. Input the set wave load into the wave simulation system, and simulate the wave load through the wave simulation system. Subsequently, control the hammer body to fall through the servo power system, and conduct a drop hammer breaking experiment on the specimen in the experimental water tank by the hammer body. After the experiment, the wave simulation system stops working, reset the hammer body through the servo power system, and drain the water body in the experimental water tank through the drainage system. The present utility model can test the rock breaking efficiency of the hammer body under different water depths and wave loads, and study the influence of different rock masses, hammer shapes, and different falling speeds of the hammer body on the specimen breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural view of the present utility model;

[0022] Figure 2 is a schematic structural view of the connection between the hammer body and the towing rope.

[0023] In the figure: 10, outer box body; 20, experimental water tank; 210, water level sensor; 220, safety net; 30, specimen; 40, experimental table; 510, conveying part; 520, water delivery pipe; 611, power part; 612, wave plate; 621, wave dissipating plate; 622, spring group; 710, slide rail; 720, fixing device; 730, servo drive source; 80, hammer body; 810, towing rope; 910, drainage part; 920, drain pipe; 100, central control system; 110, acoustic emission system; 120, experimental box cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] A preferred embodiment of the present utility model will be described in detail below with reference to the accompanying drawings.

[0025] To achieve the above object, the embodiments of the present utility model adopt the following technical solutions: Refer to Figure 1, An experimental device for simulating underwater rock breaking by a drop hammer, comprising an outer box body 10, an experimental water tank 20 arranged on the outer box body, and an experimental table 40 arranged at the bottom of the experimental water tank for fixing a specimen 30. It also includes a water delivery system, a wave simulation system, a servo power system, and a drainage system. The water delivery system is arranged outside the experimental water tank. The water delivery system includes a delivery part 510 and a water delivery pipe 520 arranged at the output end of the delivery part for delivering water into the experimental water tank. The delivery part is used for storing water and providing water delivery power, and the water delivery pipe is used for delivering water into the experimental water tank. The wave simulation system includes a wave plate power mechanism arranged on one side inside the experimental water tank 20 for simulating wave loads and a wave dissipation mechanism arranged on the other side inside the experimental water tank for absorbing wave loads. The servo power system is arranged on the top of the experimental water tank for driving the hammer body 80 to move. The drainage system is used for draining the water in the experimental water tank. It should be noted that an experimental box cover 120 is also provided on the top of the experimental water tank. During use, remove the experimental box cover, place and fix the specimen on the experimental table, install the selected hammer body on the fixing device on the slide rail, and fix the hammer body. Then install the experimental box cover back. Inject water into the experimental water tank through the water delivery system to the set water level. Input the set wave loads into the wave simulation system, and simulate the wave loads through the wave simulation system. Subsequently, control the hammer body to fall through the servo power system, and conduct a drop hammer rock breaking experiment on the specimen in the experimental water tank. After the experiment, the wave simulation system stops working, reset the hammer body through the servo power system, and drain the water body in the experimental water tank through the drainage system. The utility model can test the rock breaking efficiency of the hammer body under different water depths and wave loads, and study the influence of different rock masses, hammer shapes, and different falling speeds of the hammer body on the specimen breaking.

[0026] As a preferred technical solution of this embodiment, an acoustic emission system 110 is further arranged on the experimental table 40. The experimental device for simulating underwater rock breaking by a drop hammer further includes a central control system 100. The central control system is connected to systems such as the water delivery system, the wave simulation system, the servo power system, the drainage system, and the acoustic emission system, and is used for sending commands to each system, and at the same time recording experimental data such as the water level, the speed of the whole process of the hammer body falling, and the acoustic emission of the specimen.

[0027] As a preferred technical solution of this embodiment, the wave plate power mechanism includes a power part 611 and a wave plate 612. The wave plate 612 is arranged at the output end of the power part, and this wave plate is located inside the experimental water tank 20. The power part can be a driving part such as a vibrator arranged on the outer box body 10. The output end of this power part extends into the experimental water tank, and can drive the wave plate placed inside the experimental water tank to vibrate inside the experimental water tank 20, so as to simulate wave loads.

[0028] Further, the wave dissipating mechanism includes a wave dissipating plate 621 and a spring group 622. The wave dissipating plate 621 is disposed inside the experimental water tank 20 relative to the wave plate 612. The number of spring groups 622 is multiple, and the multiple spring groups are arranged between the wave dissipating plate and the inner wall of the experimental water tank for fixing the wave dissipating plate. The wave dissipating plate can be specifically made of a high-void material, which can remove the wave load, avoid the reflection of the waves hitting the wall, and achieve the effect of unloading force. In addition, the spring group not only fixes the wave dissipating plate, but also can jointly dissipate waves with the wave dissipating plate.

[0029] As a preferred technical solution of this embodiment, the servo power system includes a slide rail 710, a fixing device 720, a servo drive source 730, and a lifting mechanism. The fixing device 720 is slidably disposed on the slide rail, and this fixing device is used to fix the hammer body 80. The servo drive source 730 is used to drive the hammer body to move along the slide rail. The lifting mechanism is disposed on the fixing device, and this lifting mechanism is used to realize the falling or lifting of the hammer body. When in use, the servo drive source can drive the fixing device to move along the slide rail. Since the hammer body is disposed on the fixing device, in this way, the position of the hammer body can be adjusted by using the movement of the fixing device to change the falling position of the hammer body. After the position of the hammer body is adjusted, the lifting mechanism can be used to realize the falling of the hammer body to simulate the underwater rock breaking experiment.

[0030] Further, referring to Figure 2 , the fixing device 720 and the hammer body 80 are detachably connected by bolts. In this way, the hammer body can be disassembled and replaced to explore the influence of different weights and shapes of the hammer body on the rock breaking efficiency.

[0031] As a preferred technical solution of this embodiment, the servo drive source 730 can specifically be a motor, and a lead screw can be provided at the output end of the servo drive source 730. The fixing device 720 is disposed on the lead screw through a lead screw nut. In this way, when the servo drive source works, it can drive the lead screw to rotate, and the lead screw can then drive the fixing device to move along the slide rail through the lead screw nut, thereby driving the hammer body to move.

[0032] Further, a towing rope 810 is provided on the hammer body 80. In order to realize the rising and falling of the hammer body, the lifting mechanism includes a winding drum, and this winding drum is disposed on the fixing device 720. When the winding drum rotates, it can wind or release the towing rope, thereby realizing the rising or falling of the hammer body 80.

[0033] As a preferred technical solution of this embodiment, the drainage system includes a drainage part 910 and a drainage pipe 920. The drainage part 910 is used for storing water and providing drainage power. The drainage pipe 920 is disposed at the input end of the drainage part and extends into the experimental water tank for draining the water in the experimental water tank. In this way, after the hammer body completes the falling rock breaking experiment, the drainage part 910 and the drainage pipe 920 can be used together to drain the water in the experimental water tank.

[0034] Further, a water level sensor 210 is also provided on the inner wall of the experimental water tank, and the water level sensor 210 can be used to detect the water level data in the experimental water tank 20.

[0035] Further, safety nets 220 are also provided inside the experimental water tank 20 on both sides of the experimental table 40. The safety nets can prevent the splashing of broken blocks and avoid damaging the surrounding components.

[0036] During use, remove the experimental box cover, place and fix the specimen, install the selected hammer on the fixing device of the slide rail and fix its position, then reinstall the experimental box cover, and then fill the experimental water tank with water to the set water level. Input the set wave load into the wave simulation system, the wave board starts to vibrate, and then the hammer drops through the servo power system. After the experiment is over, the wave board stops vibrating, pull the tow rope to reset the hammer, and drain the water in the experimental water tank.

[0037] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An experimental device for simulating underwater rock breaking by a drop hammer, comprising an outer box body (10), an experimental water tank (20) arranged on the outer box body, and an experimental table (40) arranged at the bottom of the experimental water tank for fixing a specimen (30), characterized in that, It further includes: A water delivery system, which is arranged outside the experimental water tank. The water delivery system includes a delivery part (510) and a water delivery pipe (520) arranged at the output end of the delivery part for delivering water into the experimental water tank; A wave simulation system, which includes a wave plate power mechanism arranged on one side inside the experimental water tank (20) for simulating wave loads and a wave dissipation mechanism arranged on the other side inside the experimental water tank for absorbing wave loads; A servo power system, which is arranged on the top of the experimental water tank and is used to drive the hammer body (80) to move; and A drainage system, which is used to drain the water in the experimental water tank.

2. The experimental device for simulating underwater rock breaking by a drop hammer according to claim 1, characterized in that, The experimental device for simulating underwater rock breaking by a dropped hammer further includes a central control system (100); an acoustic emission system (110) is also arranged on the experimental table (40).

3. The experimental device for simulating underwater rock breaking by a drop hammer according to claim 1, characterized in that, The wave plate power mechanism includes a power part (611) and a wave plate (612) arranged at the output end of the power part and located inside the experimental water tank (20); the power part (611) can drive the wave plate (612) to vibrate inside the experimental water tank (20).

4. The experimental device for simulating underwater rock breaking by a drop hammer according to claim 3, characterized in that, The wave dissipation mechanism includes a wave dissipation plate (621) arranged inside the experimental water tank (20) relative to the wave plate (612) and a spring group (622) for fixing the wave dissipation plate.

5. The experimental device for simulating underwater rock breaking by a drop hammer according to claim 1, characterized in that, The servo power system includes a slide rail (710), a fixing device (720) slidably arranged on the slide rail and used to fix the hammer body (80), a servo drive source (730) for driving the hammer body to move along the slide rail, and a lifting mechanism arranged on the fixing device for realizing the falling or lifting of the hammer body.

6. The experimental device for simulating underwater rock breaking by a drop hammer according to claim 5, characterized in that, The fixing device (720) is detachably connected to the hammer body (80) by bolts.

7. The experimental device for simulating underwater rock breaking by a drop hammer according to claim 5, characterized in that, A lead screw is arranged at the output end of the servo drive source (730), and the fixing device (720) is arranged on the lead screw through a lead screw nut.

8. The experimental device for simulating underwater rock breaking by a drop hammer according to claim 5, characterized in that, The lifting mechanism includes a winding drum arranged on the fixing device (720) and used to wind or release the towing rope (810) on the hammer body (80).

9. The experimental device for simulating underwater rock breaking by a drop hammer according to claim 1, characterized in that, The drainage system includes a drainage part (910) and a drainage pipe (920) arranged at the input end of the drainage part and extending into the experimental water tank; a water level sensor (210) is also arranged on the inner wall of the experimental water tank.

10. The experimental device for simulating underwater rock breaking by a drop hammer according to claim 1, characterized in that, Safety nets (220) are also arranged on both sides of the experimental table (40) inside the experimental water tank (20).

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