CN209992685U - Seismic source excitation device of shallow impact hammer - Google Patents
Seismic source excitation device of shallow impact hammer Download PDFInfo
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- CN209992685U CN209992685U CN201920623581.2U CN201920623581U CN209992685U CN 209992685 U CN209992685 U CN 209992685U CN 201920623581 U CN201920623581 U CN 201920623581U CN 209992685 U CN209992685 U CN 209992685U
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Abstract
The utility model relates to a seismic exploration equips the field, discloses a shallow percussion hammer focus excitation device. The shallow impact hammer seismic source excitation device comprises a base, a lifting assembly, a heavy hammer and an elastic piece; the heavy hammer is movably arranged on the base through the lifting component; two ends of the elastic piece are respectively connected to the heavy hammer and the position, lower than the heavy hammer, on the base. The utility model provides a shallow layer jump bit focus excitation device is through setting up the weight on the base to connect the elastic component between the position that is less than the weight on weight and base, make the weight when promoted, the elastic component is elongated by corresponding, and when the weight whereabouts, the weight can be with higher speed striking base under the effect of the restoring force of self gravity and elastic component, guarantees the excitation energy of weight when as the focus. The size of the impact force of the heavy hammer can be flexibly adjusted by adjusting the parameters such as the material and the number of the corresponding elastic pieces, and the shallow layer impact hammer seismic source excitation device is ensured to meet the use requirements of different shallow layer seismic prospecting.
Description
Technical Field
The utility model relates to a seismic exploration equips the field, especially relates to a shallow percussion hammer focus excitation device.
Background
Seismic exploration is an important way for obtaining first-hand data of geological information of city construction engineering, and an artificial seismic source is a source of seismic exploration signals. Shallow layers refer to strata ranging from the exploration surface to a depth of 500m, which is the area of the strata that affects urban construction. Seismic exploration utilizes the characteristic that seismic waves excited by an artificial seismic source propagate at a stratum interface to explain an engineering geological structure. Seismic exploration provides important basis for the fields of searching oil gas and mineral resources, detecting geological conditions and engineering construction (building subways, highway bridges and high-rise buildings). Particularly, the national economy and the civil life are deeply influenced by the current urban construction, for example, rail traffic is taken as an example, subways become the first choice for solving the congestion of big cities, and high-speed rails enable the traffic among cities to be convenient. The determination and implementation of construction schemes such as track routes, building site selection and the like all depend on real-time and accurate geological information, so that underground latent faults, cavities and abnormal objects are avoided, and the orderly promotion of urban construction is ensured.
Exploring artificial sources suitable for engineering seismic exploration is the leading topic of research in this field at present. In seismic exploration, an artificial seismic source is used for exciting seismic waves, a detector acquires seismic signals related to a stratum, and a computer analyzes received seismic data to know the distribution condition of a stratum structure. The existing artificial seismic sources mainly comprise an explosive source, an air gun source, a controllable seismic source, a hammering seismic source and the like. The explosive seismic source has strong explosion impact capability and good formed waveform effect, but in a population-dense area, the explosive seismic source has the problems of low safety coefficient and environmental pollution; the vibration frequency of the controllable seismic source can be controlled, but the controllable seismic source cannot be popularized due to complex structure and high price; the manual sledge hammer is convenient to carry and low in price, but the generated impact energy is weak, the penetration depth cannot meet the requirement of the existing shallow exploration work, and the labor intensity of an operator is high. The heavy hammer seismic source is widely applied to engineering seismic exploration due to the characteristics of simplicity, easiness in use, environmental protection and the like, is frequently used in micro-logging and small-refraction construction, and is particularly suitable for engineering exploration of building dense areas such as towns and the like. But the excitation energy of the heavy hammer seismic source is relatively small and the consistency is poor.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims at providing a less problem of the excitation energy of weight when using the weight as the focus among the solution prior art.
(II) technical scheme
In order to solve the technical problem, the utility model provides a shallow layer jump bit focus excitation device. The shallow impact hammer seismic source excitation device comprises a base, a lifting assembly, a heavy hammer and an elastic piece; the heavy hammer is movably arranged on the base through the lifting assembly; two ends of the elastic piece are respectively connected to the heavy hammer and the position, lower than the heavy hammer, of the base.
Further, the base comprises a top plate, a bottom plate and a guide rail connected between the top plate and the bottom plate, and the heavy hammer is movably arranged on the guide rail.
Furthermore, the number of the guide rails is at least two, at least two of the guide rails are arranged oppositely, and the heavy hammer is movably arranged between the at least two of the guide rails through the support frame.
Further, the bottom plate comprises an upper bottom plate and a lower bottom plate, and a buffer member is arranged between the upper bottom plate and the lower bottom plate.
Furthermore, two ends of the elastic piece are respectively connected to the supporting frame and the bottom plate.
Furthermore, the upper base plate is provided with a through hole for the heavy hammer to pass through so that the heavy hammer can be contacted with the lower base plate when falling.
Furthermore, the lifting assembly comprises a control part, a driving part, a connecting part and a magnetic adsorption part, two ends of the connecting part are respectively connected with the driving part and the magnetic adsorption part, the driving part drives the heavy hammer to ascend through the connecting part and the magnetic adsorption part, and the control part is used for controlling the magnetic adsorption part.
Furthermore, a pulley is further arranged on the top plate, and the connecting piece is wound on the pulley.
Furthermore, the shallow percussion hammer seismic source excitation device further comprises wheels, and the wheels are movably connected to the bottom plate through telescopic assemblies.
Furthermore, the upper bottom plate or the lower bottom plate is hinged with a connecting plate, and the other end of the connecting plate is connected with the wheel and the telescopic assembly respectively.
(III) advantageous effects
The utility model provides a shallow layer jump bit focus excitation device is through setting up the weight on the base to connect the elastic component between the position that is less than the weight on weight and base, make the weight when promoted, the elastic component is elongated by corresponding, and when the weight whereabouts, the weight can be under the effect of the restoring force of self gravity and elastic component, strikes the base with higher speed, has guaranteed the excitation energy in weight focus. In addition, by adjusting the parameters such as the material and the number of the corresponding elastic pieces, the impact force of the heavy hammer can be flexibly adjusted, and the use requirements of the shallow impact hammer seismic source excitation device for different shallow seismic prospecting can be met.
Drawings
Fig. 1 is a schematic front view of a seismic source excitation device of a shallow percussion hammer according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a shallow percussion hammer seismic source excitation device according to an embodiment of the present invention.
The reference numbers illustrate:
1. a weight; 2. an elastic member; 3. a top plate; 4. a guide rail; 5. a support frame; 6. an upper base plate; 7. a lower base plate; 8. a buffer member; 9. a connecting member; 10. a magnetic adsorption member; 11. a pulley; 12. a wheel; 13. a telescoping assembly; 14. a connecting plate.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a shallow layer jump bit focus excitation device. The shallow impact hammer seismic source excitation device comprises a base, a lifting assembly, a heavy hammer 1 and an elastic piece 2; the heavy hammer 1 is movably arranged on the base through a lifting component; two ends of the elastic element 2 are respectively connected to the weight 1 and the position on the base lower than the weight 1.
As shown in fig. 1 and 2, the utility model provides a shallow percussion hammer seismic source excitation device, through setting up weight 1 on the base, and connect elastic component 2 between the position that is less than weight 1 on weight 1 and base, make weight 1 when promoted, elastic component 2 is elongated by corresponding, when weight 1 whereabouts, weight 1 can be under the effect of self gravity and elastic component 2's restoring force, strike the base with higher speed, the excitation energy when having guaranteed weight 1 as the seismic source. In addition, by adjusting the parameters such as the material and the number of the corresponding elastic pieces 2, the impact force of the heavy hammer 1 can be flexibly adjusted, and the use requirements of the shallow impact hammer seismic source excitation device for different shallow seismic prospecting can be met.
Specifically, the base mainly functions as a weight support 1 and the like as a main structure of the seismic source excitation device of the shallow percussion hammer. In this embodiment, the base may be made of a metal material, so that a certain structural strength of the base itself can be ensured, and the structural stability of the shallow layer percussion hammer seismic source excitation device is ensured. Of course, in alternative embodiments, the base may be made of other materials with certain strength and rigidity. The weight 1 is movably connected to the base, and the movable connection may be sliding connection.
In this embodiment, the lifting assembly includes a control element (not shown), a driving element (not shown), a connecting element 9 and a magnetic adsorbing element 10, two ends of the connecting element 9 are respectively connected to the driving element and the magnetic adsorbing element 10, the driving element drives the weight 1 to ascend through the connecting element 9 and the magnetic adsorbing element 10, and the control element is used to control the magnetic adsorbing element 10.
For example, a hoisting machine or other hoisting device may be used as the driving device, and the driving device may be provided on the base or may be provided separately on one side of the base. The driving piece and the heavy hammer 1 are connected with a magnetic adsorption piece 10 through a connecting piece 9, the connecting piece 9 can be a steel wire rope or other elements, and the magnetic adsorption piece 10 can be an electromagnet or a permanent magnet or other elements; the control member is used to control the magnetic attraction member 10, such as turning on or off the electromagnet. In addition, through setting up magnetism and adsorbing the tongs that piece 10 regarded as weight 1, can realize weight 1 effect of grabbing and releasing by remote control magnetism and adsorb piece 10, need not operating personnel's closely operation, it is safe high-efficient. Moreover, by using equipment such as a winch and the like, the operation step of manually lifting the heavy hammer 1 is omitted, and the working strength of an operator using the shallow impact hammer seismic source excitation device is reduced.
The elastic member 2 is an important component for increasing the impact force of the weight 1, wherein two ends of the elastic member 2 are respectively connected to the weight 1 and the base at a position lower than the weight 1, i.e. the elastic member 2 applies a downward pulling force to the weight 1. Thus, after the weight 1 is lifted to a certain height, the weight 1 can move downwards at an accelerated speed under the action of the gravity and the restoring force of the elastic member 2, and a larger impact force is provided for the weight 1. In addition, the quantity, materials, connecting positions and the like of the elastic pieces 2 can be flexibly adjusted according to actual conditions, so that the impact force of the heavy hammer 1 can be flexibly adjusted, and the seismic source excitation device of the shallow impact hammer can meet the seismic exploration use requirements of different shallow layers. The elastic member 2 may be an elastic cord or other element having a certain tensile strength and a high elastic restoring force.
In the present embodiment, the base includes a top plate 3, a bottom plate, and a guide rail 4 connected between the top plate 3 and the bottom plate; the number of the guide rails 4 is at least two, the at least two guide rails 4 are arranged oppositely, and the heavy hammer 1 is movably arranged between the at least two guide rails 4 through the support frame 5.
As shown in fig. 1 and 2, the top plate 3, the bottom plate, and the guide rail 4 connected between the top plate 3 and the bottom plate form a substantially rectangular frame structure. The top plate 3 is positioned above and can be provided with a fixed pulley 11 for realizing the reversing of the line rope in the winch. In addition, the fixed pulley 11 can be arranged at the middle position of the top plate 3, so that when the rope of the winch bypasses the fixed pulley 11, the rope is ensured to be just positioned at the middle position of the top plate 3, and further, when the heavy hammer 1 is lifted, the heavy hammer 1 is also ensured to be positioned at the middle position of the whole device. When the weight 1 falls, it can be ensured that the weight 1 just falls to the middle position of the whole device, thus avoiding the weight 1 from tilting or swinging when falling.
In the preferred embodiment, the two guide rails 4 are symmetrically arranged between the bottom plate and the top plate 3, and the weight 1 is movably arranged between the two guide rails 4 through the support frame 5.
For example, two opposite side surfaces of the two guide rails 4 may be respectively provided with grooves extending along the length direction of the guide rails 4, the support frame 5 is fixedly connected with the weight 1, and then two ends of the support frame 5 are respectively clamped in the grooves of the two guide rails 4. This enables the movable connection between the weight 1 and the guide rail 4.
In addition, through setting up the form that recess and support frame 5 cooperate, can also provide direction, the effect of strutting to the promotion of weight 1, whereabouts. Therefore, the condition that the heavy hammer 1 swings and inclines in the lifting and falling processes can be further prevented, the contact between the heavy hammer 1 and the bottom plate is guaranteed to be direct collision, and the impact force of the heavy hammer 1 can be further guaranteed to be completely acted on the bottom plate.
Of course, the movable connection and guiding between the guide rail 4 and the weight 1 can be realized by other forms, which are not described herein.
In addition, a buckle structure (not shown in the figure) can be arranged on the support frame 5 and/or the guide rail 4, and the purpose of increasing or decreasing the elastic piece 2 can be realized through the buckle structure, so that the impact force of the counterweight hammer 1 can be adjusted.
As shown in fig. 1 and 2, the bottom plate includes an upper plate 6 and a lower plate 7. The lower plate 7 is a plate directly contacted by the weight 1, and therefore, a through hole for the weight 1 to pass through is further formed in the upper plate 6, so that the weight 1 can be contacted with the lower plate 7 when falling. The diameter of the through hole formed on the upper plate 6 is slightly larger than the diameter of the weight 1, so that the weight 1 can easily pass through the through hole and contact the lower plate 7.
In addition, in order to prevent the weight 1 from bouncing up to the lower plate 7 after striking the lower plate 7 and causing secondary impact on the lower plate 7, a buffer member 8 is further provided between the upper plate 6 and the lower plate 7. The occurrence of the above-described situation can be effectively avoided by providing the cushion member 8. Specifically, the buffer member 8 may be one or more of a combination of air spring, disc spring, or ordinary spring, which has a buffering function. Correspondingly, the buffer member 8 is arranged at the position corresponding to the lower plate 7 around the through hole of the upper plate 6, so that the impact force of the heavy hammer 1 is prevented from being influenced by the impact of the heavy hammer 1 directly impacting the buffer member 8 when the heavy hammer 1 falls. In the preferred embodiment, the dampener 8 comprises four air spring and four sets of disc springs, as shown in fig. 2. Wherein, the four air cushion springs are respectively arranged at four corner positions between the upper bottom plate and the lower bottom plate; four sets of dish springs set up respectively between two adjacent air spring, so, just so, can further prevent that weight 1 from striking and bounce and causing the secondary impact to lower plate 7 after 7, guaranteed the accuracy of test result.
As mentioned above, the two ends of the elastic member 2 are respectively connected to the weight 1 and the base at a position lower than the weight 1, and preferably, the two ends of the elastic member 2 are respectively connected to the supporting frame 5 and the bottom plate. Referring to fig. 1 and 2, in one embodiment, the elastic member 2 may be connected to the support frame 5 and the upper plate 6; in another embodiment, the elastic member 2 may be connected to the support frame 5 and the lower plate 7.
Furthermore, the shallow percussion hammer seismic source excitation device also comprises wheels 12, and the wheels 12 are movably connected to the bottom plate through telescopic assemblies 13; the wheels 12 are universal wheels. By arranging the wheels 12, the aim of flexibly moving the seismic source excitation device of the shallow impact hammer can be achieved, and the wheels 12 are arranged to be universal wheels, so that the aim of flexibly steering can be achieved.
Specifically, a connecting plate 14 is hinged to the upper base plate 6 or the lower base plate 7, and the other end of the connecting plate 14 is connected to the wheel 12 and the telescopic assembly 13 respectively. As shown in fig. 1 and 2, the telescopic assembly 13 may be a telescopic element such as a hydraulic cylinder, one end of which is hinged on the guide rail 4, one end of the connecting plate 14 is hinged at the edge position of the upper base plate 6, and the other end of which is connected with the other end of the connecting plate 14 and is connected with the wheel 12. Therefore, when the shallow percussion hammer seismic source excitation device needs to be pushed, the piston rod of the hydraulic cylinder only needs to be extended out, the connecting plate 14 is driven to be unfolded, and the wheel 12 is put down and is in contact with the ground, so that the purpose of pushing the shallow percussion hammer seismic source excitation device is achieved. When the shallow percussion hammer seismic source excitation device needs to be used, only the piston rod of the hydraulic cylinder needs to be retracted, so that the connecting plate 14 is driven to be retracted, and the wheels 12 are lifted up. At this time, the lower bottom plate 7 is directly located on the ground, and the shallow percussion hammer seismic source excitation device can be used for completing the impact test.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A seismic source excitation device of a shallow impact hammer is characterized by comprising a base, a lifting assembly, a heavy hammer (1) and an elastic piece (2);
the heavy hammer (1) is movably arranged on the base through the lifting assembly;
two ends of the elastic piece (2) are respectively connected to the heavy hammer (1) and the position, lower than the heavy hammer (1), on the base.
2. The shallow percussion hammer seismic source excitation device according to claim 1, wherein the base comprises a top plate (3), a bottom plate and a guide rail (4) connected between the top plate (3) and the bottom plate, and the hammer (1) is movably disposed on the guide rail (4).
3. The seismic source excitation device of shallow percussion hammer according to claim 2, wherein there are at least two guide rails (4), at least two guide rails (4) are oppositely disposed, and the weight (1) is movably disposed between at least two guide rails (4) through a support frame (5).
4. The shallow percussion hammer seismic source excitation device according to claim 2, wherein the bottom plate comprises an upper bottom plate (6) and a lower bottom plate (7), and a buffer (8) is disposed between the upper bottom plate (6) and the lower bottom plate (7).
5. The shallow percussion hammer seismic source excitation device according to claim 3, wherein the two ends of the elastic member (2) are connected to the supporting frame (5) and the bottom plate, respectively.
6. The seismic source excitation device of the shallow percussion hammer according to claim 4, wherein the upper plate (6) is provided with a through hole for the heavy hammer (1) to pass through so that the heavy hammer (1) can contact with the lower plate (7) when falling.
7. The seismic source excitation device of shallow percussion hammer according to claim 2, wherein the lifting assembly comprises a control member, a driving member, a connecting member (9) and a magnetic adsorbing member (10), the two ends of the connecting member (9) are respectively connected to the driving member and the magnetic adsorbing member (10), the driving member drives the weight (1) to ascend through the connecting member (9) and the magnetic adsorbing member (10), and the control member is used for controlling the magnetic adsorbing member (10).
8. The seismic source excitation device of a shallow percussion hammer according to claim 7, wherein a pulley (11) is further provided on the top plate (3), and the connecting member (9) is wound around the pulley (11).
9. The shallow percussion hammer seismic source excitation device of claim 4, further comprising a wheel (12), wherein the wheel (12) is movably connected to the base plate by a telescoping assembly (13).
10. The shallow percussion hammer seismic source excitation device according to claim 9, wherein the upper base plate (6) or the lower base plate (7) is hinged with a connecting plate (14), and the other end of the connecting plate (14) is connected with the wheel (12) and the telescopic assembly (13), respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920623581.2U CN209992685U (en) | 2019-04-30 | 2019-04-30 | Seismic source excitation device of shallow impact hammer |
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| CN201920623581.2U CN209992685U (en) | 2019-04-30 | 2019-04-30 | Seismic source excitation device of shallow impact hammer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812704A (en) * | 2020-06-30 | 2020-10-23 | 四川轻化工大学 | Portable acceleration type mechanical heavy hammer seismic source |
| CN111913211A (en) * | 2020-07-24 | 2020-11-10 | 山东交通学院 | Intelligent TRT test seismic source excitation device and method |
| CN111983669A (en) * | 2020-07-29 | 2020-11-24 | 河海大学 | Portable seismic wave firing device |
| CN112305583A (en) * | 2020-10-27 | 2021-02-02 | 上海旻悦勘察设计有限公司 | Shallow seismic exploration equipment and using method thereof |
| CN113466927A (en) * | 2021-07-16 | 2021-10-01 | 安徽久安地震勘察有限公司 | Variable vibration source generator |
| CN114923456A (en) * | 2022-05-16 | 2022-08-19 | 中国煤炭地质总局勘查研究总院 | Ground subsidence detection device for coal mine goaf |
-
2019
- 2019-04-30 CN CN201920623581.2U patent/CN209992685U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812704A (en) * | 2020-06-30 | 2020-10-23 | 四川轻化工大学 | Portable acceleration type mechanical heavy hammer seismic source |
| CN111913211A (en) * | 2020-07-24 | 2020-11-10 | 山东交通学院 | Intelligent TRT test seismic source excitation device and method |
| CN111983669A (en) * | 2020-07-29 | 2020-11-24 | 河海大学 | Portable seismic wave firing device |
| CN112305583A (en) * | 2020-10-27 | 2021-02-02 | 上海旻悦勘察设计有限公司 | Shallow seismic exploration equipment and using method thereof |
| CN113466927A (en) * | 2021-07-16 | 2021-10-01 | 安徽久安地震勘察有限公司 | Variable vibration source generator |
| CN113466927B (en) * | 2021-07-16 | 2024-03-26 | 安徽久安地震勘察有限公司 | Variable focus generator |
| CN114923456A (en) * | 2022-05-16 | 2022-08-19 | 中国煤炭地质总局勘查研究总院 | Ground subsidence detection device for coal mine goaf |
| CN114923456B (en) * | 2022-05-16 | 2024-05-14 | 中国煤炭地质总局勘查研究总院 | Ground subsidence detection device for coal mine goaf |
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