A vehicle-mounted seismic exploration device

Abstract

The present invention discloses a vehicle-mounted seismic exploration device, which comprises a tractor and a towing vehicle connected to the tractor. The tractor includes traction wheels and seismic wave sensors fixed on the traction wheels. The towing vehicle includes a left rear towing wheel and a right rear towing wheel; first cams and second cams are respectively fixed on the rear towing wheel shafts. The towing vehicle further includes a first guide rod, the lower part of which abuts against the upper part of the first cam, the front end of the first guide rod is hinged to the transverse bracket, and a first hammer head is provided at the rear end of the first guide rod; the towing vehicle further includes a second guide rod, the lower part of which abuts against the upper part of the second cam, the front end of the second guide rod is hinged to the transverse bracket, and a second hammer head is provided at the rear end of the second guide rod. Compared with the prior art, the present invention adopts a vehicle-mounted structure, has strong passability, a simple structure, can effectively reduce the manual labor intensity, and shorten the time for occupying the site.

Description

Technical Field

[0001] The invention belongs to the technical field of seismic exploration, and in particular relates to a vehicle-mounted seismic exploration device. Background Art

[0002] When constructing a building, the stability of the foundation must be ensured. Otherwise, the underground space may be threatened by adverse geological conditions such as karst, groundwater level drop, groundwater erosion from damaged water pipes, and ground fissures, which may cause foundation collapse. In order to understand the status of the space, geophysical methods can be used to detect the underground space and realize the detection and assessment of hidden dangers under the foundation. Shallow artificial earthquake is a common technical method for engineering exploration.

[0003] In the prior art, the structure of the geological exploration excitation and observation system is as follows: a heavy hammer structure is set up, and a lifting device is used to drive the heavy hammer to rise and then fall to hit the road surface to form elastic wave excitation. The sensors and seismic sources form a longitudinal array along a straight line. After the seismic sources are excited one by one to complete data collection, the observation array is arranged in parallel.

[0004] The disadvantages of the prior art are that, in the above scheme, the source and the sensor need to be arranged separately, the acquisition speed is slow, the labor intensity is high and the site is occupied for a long time. In addition, a heavy hammer displacement driving device needs to be additionally installed, which has a complicated structure. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] Based on this, the present invention proposes a vehicle-mounted seismic exploration device, which aims to solve the technical problems of the seismic exploration device in the prior art, such as complex structure, slow operation, high labor intensity and long site occupation time.

[0007] (II) Technical solution

[0008] To solve the above technical problems, the present invention proposes a vehicle-mounted seismic exploration device, which includes a tractor and a towing vehicle connected to the tractor. The tractor includes a left front traction wheel, a left rear traction wheel, a right front traction wheel, and a right rear traction wheel. A first seismic wave sensor, a second seismic wave sensor, a third seismic wave sensor, and a fourth seismic wave sensor are respectively fixed on the left front traction wheel, the left rear traction wheel, the right front traction wheel, and the right rear traction wheel. The towing vehicle includes a longitudinal bracket and a transverse bracket arranged on the longitudinal bracket. One end of the longitudinal bracket is connected to the tractor, and the other end of the longitudinal bracket is provided with a rear towing wheel shaft. A left rear towing wheel and a right rear towing wheel are respectively arranged at both ends of the rear towing wheel shaft. A first cam and a second cam are respectively fixed on the rear towing wheel shaft. The towing vehicle further includes a first guide rod, the lower part of the first guide rod abuts against the upper part of the first cam, the front end of the first guide rod is hinged to the transverse bracket, and a first hammer head is arranged at the rear end of the first guide rod. The towing vehicle further includes a second guide rod, the lower part of the second guide rod abuts against the upper part of the second cam, the front end of the second guide rod is hinged to the transverse bracket, and a second hammer head is arranged at the rear end of the second guide rod.

[0009] Preferably, both the first cam and the second cam are disk-shaped cams. One side of the first cam has a first protrusion, and one side of the second cam has a second protrusion. The vehicle-mounted seismic exploration device has an installation reference state. When the vehicle-mounted seismic exploration device is in the installation reference state, the first seismic wave sensor is located at the top of the left front traction wheel, the second seismic wave sensor is located at the top of the left rear traction wheel, the third seismic wave sensor is located at the bottom of the right front traction wheel, and the fourth seismic wave sensor is located at the bottom of the right rear traction wheel. The first protrusion is arranged upward, and the second protrusion is arranged downward.

[0010] Preferably, the longitudinal bracket is rotatably connected to the rear towing wheel shaft, and the left rear towing wheel and the right rear towing wheel are respectively fixedly connected to the rear towing wheel shaft.

[0011] Preferably, there is also a front towing wheel shaft on the longitudinal bracket. A left front towing wheel and a right front towing wheel are respectively arranged at both ends of the front towing wheel shaft. The longitudinal bracket is rotatably connected to the front towing wheel shaft, and the left front towing wheel and the right front towing wheel are respectively fixedly connected to the rear towing wheel shaft.

[0012] Preferably, the first cam and the second cam are arranged between the left rear towing wheel and the right rear towing wheel.

[0013] Preferably, in the front-rear direction of the vehicle-mounted seismic exploration device, the left front traction wheel and the left rear traction wheel are aligned, and the right front traction wheel and the right rear traction wheel are aligned.

[0014] Preferably, the first cam is aligned with the left rear traction wheel, and the second cam is aligned with the right rear traction wheel.

[0015] Preferably, one end of the longitudinal bracket close to the tractor is provided with a drag hook for hooking up with the tractor.

[0016] Preferably, the transverse bracket includes: a cross bar fixedly connected to the longitudinal bracket, a first support rod and a second support rod extending upward from both ends of the cross bar, a first pin hinged to the first support rod is provided at the top of the first support rod, the first guide rod is connected to the first pin, a second pin hinged to the second support rod is provided at the top of the second support rod, and the second guide rod is connected to the second pin.

[0017] Preferably, a central control system for data acquisition and processing is provided in the tractor; a first trigger is further provided on the first guide rod, a second trigger is further provided on the second guide rod, and the central control system is connected to the first seismic wave sensor, the second seismic wave sensor, the third seismic wave sensor and the fourth seismic wave sensor respectively through a wireless network.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the vehicle-mounted seismic exploration device of the present invention mainly include:

[0020] Compared with the prior art, the vehicle-mounted seismic exploration device of the present invention has the following advantages:

[0021] (1) Adopting a vehicle-mounted structure, it has strong passability, little impact on traffic and the surrounding environment, is convenient to use, and requires less manpower input.

[0022] (2) There is no need to arrange sensors and seismic sources on site, and the acquisition speed is fast and the efficiency is high.

[0023] (3) The excitation energy and trace interval are uniform, and the data is accurate.

[0024] (4) The overall structure is simple, the cost is low, and it is convenient to modify.

[0025] The present invention can bring direct social and economic benefits. All components are composed of light and small parts, which is convenient for workers to operate on site, and ensures the safety of operation while operating efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings. The drawings are schematic and should not be construed as limiting the present invention in any way. In the drawings:

[0027] Figure 1Schematic diagram of the overall structure of the vehicle-mounted seismic exploration device according to an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the tractor in the vehicle-mounted seismic exploration device according to an embodiment of the present invention;

[0029] Figure 3 Schematic diagram of the towing vehicle in the vehicle-mounted seismic exploration device according to an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the transverse bracket in the vehicle-mounted seismic exploration device according to an embodiment of the present invention.

[0031] Explanation of reference numerals:

[0032] 100. Tractor, 200. Towing vehicle, 300. Ground;

[0033] 11. Left front traction wheel, 12. Left rear traction wheel, 13. Right front traction wheel, 14. Right rear traction wheel, 15. First seismic wave sensor, 16. Second seismic wave sensor, 17. Third seismic wave sensor, 18. Fourth seismic wave sensor;

[0034] 21. Longitudinal bracket, 22. Transverse bracket, 23. Rear towing wheel axle, 24. Left rear towing wheel, 25. Right rear towing wheel, 26. First cam, 27. Second cam, 28. First guide rod, 29. First hammer head, 30. Second guide rod, 31. Second hammer head, 32. Towing hook, 33. First trigger, 34. Second trigger, 35. Front towing wheel axle, 36. Left front towing wheel, 37. Right front towing wheel;

[0035] 221. Cross bar, 222. First support rod, 223. And second support rod, 224. First pin, 225. Second pin. Detailed implementation manners

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the following describes the specific implementation manners of the present invention in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementations disclosed below.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two components, or a "transmission connection", that is, power connection is carried out through various suitable ways such as belt drive, gear drive or sprocket drive. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] The following will further describe the vehicle-mounted seismic exploration device of the present invention with reference to the Figures 1-4 accompanying drawings.

[0039] Please refer to Figures 1-3 for emphasis. The present invention discloses a vehicle-mounted seismic exploration device, which includes a tractor 100 and a tow vehicle 200 connected to the tractor 100. The tractor 100 includes a left front traction wheel 11, a left rear traction wheel 12, a right front traction wheel 13 and a right rear traction wheel 14. First seismic wave sensors 15, second seismic wave sensors 16, third seismic wave sensors 17 and fourth seismic wave sensors 18 are respectively fixedly arranged on the left front traction wheel 11, the left rear traction wheel 12, the right front traction wheel 13 and the right rear traction wheel 14; the tow vehicle 200 includes a longitudinal bracket 21 and a transverse bracket 22 arranged on the longitudinal bracket 21. One end of the longitudinal bracket 21 is connected to the tractor 100, and the other end of the longitudinal bracket 21 is provided with a rear tow wheel shaft 23. Left rear tow wheels 24 and right rear tow wheels 25 are respectively arranged at both ends of the rear tow wheel shaft 23; a first cam 26 and a second cam 27 are respectively fixedly arranged on the rear tow wheel shaft 23. The tow vehicle 200 further includes a first guide rod 28. The lower part of the first guide rod 28 abuts against the upper part of the first cam 26. The front end of the first guide rod 28 is hinged to the transverse bracket 22, and a first hammer head 29 is arranged at the rear end of the first guide rod 28; the tow vehicle 200 further includes a second guide rod 30. The lower part of the second guide rod 30 abuts against the upper part of the second cam 27. The front end of the second guide rod 30 is hinged to the transverse bracket 22, and a second hammer head 31 is arranged at the rear end of the second guide rod 30.

[0040] The vehicle-mounted seismic exploration device in this embodiment has a vehicle-mounted structure. The seismic wave sensors and the seismic source are both arranged on the vehicle body, which can greatly reduce the time for arranging the seismic source and sensors, improve the acquisition speed, reduce costs, and the vehicle-mounted structure has good passability and is easy to use, which can reduce the labor intensity of workers and shorten the time for occupying the site. In addition, when the tractor 100 drags the trailer 200 to move, the rear wheels of the trailer 200 (the left rear drag wheel 24 and the right rear drag wheel 25) rotate synchronously with the cams (the first cam 26 and the second cam 27) through the rear drag wheel shaft 23. When the cams (the first cam 26 and the second cam 27) rotate, they drive the guide rods (the first guide rod 28 and the second guide rod 30) to rotate around the hinge points, so that the hammer heads (the first hammer head 29 and the second hammer head 31) reciprocate along the circular arc line in the vertical plane. When the hammer heads (the first hammer head 29 and the second hammer head 31) strike the ground 300, an elastic wave excitation is formed, providing conditions for seismic exploration.

[0041] Therefore, in summary, it can be seen that the vehicle-mounted seismic exploration device of the present invention uses the power generated by its own self-propulsion as the power for the hammer heads (the first hammer head 29 and the second hammer head 31) to hammer, eliminating the hoisting device for driving the heavy hammer to move, and the structure is simpler and safer.

[0042] According to the specific embodiment of the present invention, both the first cam 26 and the second cam 27 are disk-shaped cams. One side of the first cam 26 has a first protrusion, and one side of the second cam 27 has a second protrusion; the vehicle-mounted seismic exploration device has an installation reference state. When the vehicle-mounted seismic exploration device is in the installation reference state, the first seismic wave sensor 15 is located at the top of the left front traction wheel 11, the second seismic wave sensor 16 is located at the top of the left rear traction wheel 12, the third seismic wave sensor 17 is located at the bottom of the right front traction wheel 13, and the fourth seismic wave sensor 18 is located at the bottom of the right rear traction wheel 14; the first protrusion is arranged upward, and the second protrusion is arranged downward.

[0043] More specifically, one end of the longitudinal bracket 21 close to the tractor 100 is provided with a drag hook 32 for hooking up with the tractor 100.

[0044] In this embodiment, the installation reference state is defined to illustrate the installation positions and installation directions of the four seismic wave sensors and the two cams.

[0045] In the installation reference state, the first protrusion is arranged upward, and the second protrusion is arranged downward. That is to say, the installation directions of the first cam 26 and the second cam 27 are opposite, that is, the directions of the protrusions of the first cam 26 and the second cam 27 are opposite.

[0046] In the installation reference state, the first seismic wave sensor 15 is located at the top of the left front towing wheel 11, and the second seismic wave sensor 16 is located at the top of the left rear towing wheel 12; the third seismic wave sensor 17 is located at the bottom of the right front towing wheel 13, and the fourth seismic wave sensor 18 is located at the bottom of the right rear towing wheel 14; that is: the seismic wave sensors on the front and rear towing wheels of the towing vehicle 100 are at the same position on the tire wall of the towing wheel. In this way, synchronous acquisition can be achieved, and further the purpose of simultaneously detecting different depth strata can be achieved. And the seismic wave sensors on the left and right towing wheels of the towing vehicle 100 are at opposite positions on the tire wall of the towing wheel. In this way, the left and right wheels of the towing vehicle 100 can respectively collect data, and further the purpose of synchronously collecting data of two profiles can be achieved.

[0047] During use, the towing vehicle 200 travels synchronously with the towing vehicle 100 through the towing hook 32. The rear wheels of the towing vehicle 200 (the left rear towing wheel 24 and the right rear towing wheel 25) rotate synchronously with the cams (the first cam 26 and the second cam 27) through the rear towing wheel shaft 23. The directions of the tips (protrusions) of the cams (the first cam 26 and the second cam 27) are the same as the directions of the seismic wave sensors on the same side, and the installation directions of the first cam 26 and the second cam 27 are opposite to achieve the purpose of excitation - acquisition synchronization. In this way, the problem of poor coupling between the hard road surface and the geophone, resulting in low data quality, can be solved.

[0048] According to a specific embodiment of the present invention, the longitudinal bracket 21 is rotatably connected to the rear towing wheel shaft 23, and the left rear towing wheel 24 and the right rear towing wheel 25 are respectively fixedly connected to the rear towing wheel shaft 23 in a rotating manner.

[0049] More specifically, there is also a front towing wheel shaft 35 on the longitudinal bracket 21. The left front towing wheel 36 and the right front towing wheel 37 are respectively provided at both ends of the front towing wheel shaft 35. The longitudinal bracket 21 is rotatably connected to the front towing wheel shaft 35, and the left front towing wheel 36 and the right front towing wheel 37 are respectively fixedly connected to the rear towing wheel shaft 23 in a rotating manner.

[0050] More specifically, the first cam 26 and the second cam 27 are provided between the left rear towing wheel 24 and the right rear towing wheel 25.

[0051] According to a specific embodiment of the present invention, adopting this structure, the first cam 26 and the second cam 27 are rotating components. Placing the two between the two rear wheels can more effectively improve the safety of the device.

[0052] According to a specific embodiment of the present invention, in the front - rear direction of the vehicle - mounted seismic exploration device, the left front towing wheel 11 and the left rear towing wheel 12 are aligned, and the right front towing wheel 13 and the right rear towing wheel 14 are aligned. The first cam 26 is aligned with the left rear towing wheel 12, and the second cam 27 is aligned with the right rear towing wheel 14.

[0053] In this embodiment, adopting this structure facilitates the collection of data in the same vertical direction, improves the quality of data collection, and facilitates data analysis and processing.

[0054] Please refer to Figure 4 , according to the specific embodiment of the present invention, the transverse bracket 22 includes: a cross bar 221 fixedly connected to the longitudinal bracket 21, a first support rod 222 and a second support rod 223 extending upward from both ends of the cross bar 221. A first pin 224 hinged to the first support rod 222 is provided at the top of the first support rod 222, the first guide rod 28 is connected to the first pin 224, a second pin 225 hinged to the second support rod is provided at the top of the second support rod, and the second guide rod 30 is connected to the second pin 225. In this embodiment, a longitudinal bracket 21 with a simple structure and capable of meeting the service performance is provided.

[0055] According to the specific embodiment of the present invention, a central control system for data collection and processing is provided inside the tractor 100; a first trigger 33 is further provided on the first guide rod 28, and a second trigger 34 is further provided on the second guide rod 30. The central control system is connected to the first seismic wave sensor 15, the second seismic wave sensor 16, the third seismic wave sensor 17, and the fourth seismic wave sensor 18 through a wireless network respectively.

[0056] In this embodiment, the triggers (the first trigger 33 and the second trigger 34) are vibration detection devices that can detect vibrations. When the vibration speed or acceleration detected by the triggers reaches a specified threshold, the triggers send signals to the central control system to command the latter to start recording data.

[0057] There are many vibration detection devices in China at present, such as Aihua vibration meter, Beijing Time vibration meter, and Tekman vibration meter. The core of the central control system is to record vibration data. Currently, the more mainstream such systems are: the GeoEel centralized seismic recording system of Geometrics Company and the KLSeis system of BGP. Because the acquisition system is relatively simple, it is usually built into more complex analysis software.

[0058] When the on-vehicle seismic exploration device of the present invention is in use, the tractor 100 travels on the ground 300, the seismic wave sensor is fixed on the inner wall of the wheel, and after the wheel rotates, the vehicle tire wall is tightly pressed against the ground 300 by the vehicle weight, thereby realizing the coupling between the seismic wave sensor and the ground 300. The central control system is connected to the seismic wave sensor through a wireless network to realize the data uploading function of the seismic wave sensor. When the hammer head impacts the ground 300, the trigger is triggered, and the data acquisition and processing central control system in the tractor 100 starts to record the data collected by the seismic wave sensor. When the tractor 100 drives the towing vehicle 200 forward, the cam and the axle rotate together, so that the hammer heads (the first hammer head 29 and the second hammer head 31) reciprocate along an arc line in the vertical plane. When the hammer heads strike the ground 300, an elastic wave excitation is formed, providing conditions for seismic exploration. At the same time, the trigger is triggered, and the central control system starts to record the data collected by the seismic wave sensor. This cycle continues. During the detection process, the excitation energy and the trace interval can be ensured to be uniform, and the data is accurate.

[0059] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A vehicle-mounted seismic exploration device, characterized in that, it includes a tractor and a towing vehicle connected to the tractor. The tractor includes a left front towing wheel, a left rear towing wheel, a right front towing wheel and a right rear towing wheel. A first seismic wave sensor, a second seismic wave sensor, a third seismic wave sensor and a fourth seismic wave sensor are respectively fixed on the left front towing wheel, the left rear towing wheel, the right front towing wheel and the right rear towing wheel; the towing vehicle includes a longitudinal bracket and a transverse bracket arranged on the longitudinal bracket. One end of the longitudinal bracket is connected to the tractor, and the other end of the longitudinal bracket is provided with a rear towing wheel shaft. A left rear towing wheel and a right rear towing wheel are respectively arranged at both ends of the rear towing wheel shaft; a first cam and a second cam are respectively fixed on the rear towing wheel shaft. The towing vehicle further includes a first guide rod, the lower part of the first guide rod abuts against the upper part of the first cam, the front end of the first guide rod is hinged to the transverse bracket, and a first hammer head is arranged at the rear end of the first guide rod; the towing vehicle further includes a second guide rod, the lower part of the second guide rod abuts against the upper part of the second cam, the front end of the second guide rod is hinged to the transverse bracket, and a second hammer head is arranged at the rear end of the second guide rod; both the first cam and the second cam are disc-shaped cams. One side of the first cam has a first protruding part, and one side of the second cam has a second protruding part; the vehicle-mounted seismic exploration device has an installation reference state. When the vehicle-mounted seismic exploration device is in the installation reference state, the first seismic wave sensor is located at the top of the left front towing wheel, the second seismic wave sensor is located at the top of the left rear towing wheel, the third seismic wave sensor is located at the bottom of the right front towing wheel, and the fourth seismic wave sensor is located at the bottom of the right rear towing wheel; the first protruding part is arranged upwards, the second protruding part is arranged downwards, the first cam is aligned with the left rear towing wheel, and the second cam is aligned with the right rear towing wheel.

2. The vehicle-mounted seismic exploration device according to claim 1, characterized in that, the longitudinal bracket is rotatably connected to the rear towing wheel shaft, and the left rear towing wheel and the right rear towing wheel are respectively fixedly connected to the rear towing wheel shaft in a rotating manner.

3. The vehicle-mounted seismic exploration device according to claim 2, characterized in that, the longitudinal bracket further has a front towing wheel shaft. A left front towing wheel and a right front towing wheel are respectively arranged at both ends of the front towing wheel shaft. The longitudinal bracket is rotatably connected to the front towing wheel shaft, and the left front towing wheel and the right front towing wheel are respectively fixedly connected to the rear towing wheel shaft in a rotating manner.

4. The vehicle-mounted seismic exploration device according to claim 3, characterized in that, the first cam and the second cam are arranged between the left rear towing wheel and the right rear towing wheel.

5. The vehicle-mounted seismic exploration device according to claim 4, characterized in that, in the front-rear direction of the vehicle-mounted seismic exploration device, the left front towing wheel and the left rear towing wheel are aligned, and the right front towing wheel and the right rear towing wheel are aligned.

6. The vehicle-mounted seismic exploration device according to claim 5, characterized in that, One end of the longitudinal bracket close to the tractor is provided with a towing hook for hooking up with the tractor.

7. The vehicle-mounted seismic exploration device according to claim 6, wherein, the transverse bracket includes: a cross bar fixedly connected to the longitudinal bracket, a first support rod and a second support rod extending upward from both ends of the cross bar, a first pin hinged to the first support rod is provided at the top of the first support rod, the first guide rod is connected to the first pin, a second pin hinged to the second support rod is provided at the top of the second support rod, and the second guide rod is connected to the second pin.

8. The vehicle-mounted seismic exploration device according to any one of claims 1-7, wherein, a central control system for data acquisition and processing is provided in the tractor; a first trigger is further provided on the first guide rod, a second trigger is further provided on the second guide rod, and the central control system is connected to the first seismic wave sensor, the second seismic wave sensor, the third seismic wave sensor and the fourth seismic wave sensor respectively through a wireless network.

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