CN112068191A - Heavy hammer excitation seismic source for seismic exploration - Google Patents

Abstract

The invention provides a heavy hammer excitation seismic source for seismic exploration, and relates to the technical field of seismic exploration; the device comprises a vehicle body, a lifting device, an excitation hammer body, a control device and the like; the bottom of the vehicle body is provided with a traveling mechanism, and one side of the vehicle body is provided with a lifting guide rail; the exciting hammer body is arranged on the lifting guide rail in a sliding manner; the lifting device is connected with the exciting hammer body, can drive the exciting hammer body to ascend along the lifting guide rail, and can release the transmission connection with the exciting hammer body so as to enable the exciting hammer body to fall freely; the control device is mounted on the vehicle body and is used for opening and closing the lifting device. The moving convenience of the equipment is improved through the traveling mechanism at the bottom of the vehicle body; the lifting of the exciting hammer body is realized through the control device and the lifting device, the height position of the exciting hammer body on the lifting guide rail is adjustable, and the seismic source energy can be adjusted due to different gravitational potential energies at different height positions, so that the requirements of shallow layer and medium-shallow layer seismic exploration are met.

Description

Seismic Exploration Using Heavy Hammer to Excite Seismic Sources

technical field

The invention relates to the technical field of seismic exploration, in particular to a heavy hammer excitation source for seismic exploration.

Background technique

Seismic exploration has always been an important means of geological exploration. The so-called seismic exploration is a kind of geophysical exploration method that stimulates seismic waves by artificial methods and studies the propagation of seismic waves in the stratum to find out the underground geological structure. The hypocenter refers to the items or equipment used to excite seismic waves in seismic exploration. Generally speaking, hypocenters can be divided into explosive sources and non-explosive sources.

Among them, the most common non-explosive source is the heavy hammer source, which stimulates seismic waves by manually or mechanically hammering the ground. However, both manual hammering equipment and mechanical hammering equipment have poor convenience and are not conducive to movement. In addition, there is also the problem that the source energy is not adjustable, and it is impossible to take into account the needs of shallow and medium-shallow layers.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a heavy hammer excitation source for seismic exploration, so as to solve the problems of poor portability and unadjustable source energy of the existing heavy hammer source.

In order to solve the above-mentioned technical problems, the present invention provides a heavy hammer excitation source for seismic exploration, and the specific technical scheme is as follows:

A heavy hammer excitation source for seismic exploration, comprising: a vehicle body, a traveling mechanism is arranged at the bottom of the vehicle body, and a lifting guide rail is arranged on one side of the vehicle body; an excitation hammer body is slidably installed on the vehicle body on the lifting guide rail; a lifting device, the lifting device is installed on the vehicle body and connected with the excitation hammer body; the lifting device can drive the excitation hammer body to rise along the lifting guide rail, and release the The drive connection of the excitation hammer body makes the excitation hammer body fall freely; and a control device, which is installed on the vehicle body and used for opening and closing the lifting device.

Further, the height of the top of the lifting rail is higher than the height of the top of the vehicle body.

Further, the lifting device includes a motor, a transmission, a gear and a chain that are sequentially connected in a transmission; the chain is connected with the excitation hammer to drive the excitation hammer to go up and down; wherein, the output shaft of the transmission is connected to the One-way transmission connection of the gears, so that the output shaft can drive the gears to rotate when the output shaft rotates, so that the output shaft stops rotating and the chain drives the gears under the gravity of the excitation hammer body When rotating, the gear is released from the transmission connection with the output shaft.

Further, a control box is installed on the vehicle body, and the motor, the transmission, the gear and the control device are all installed in the control box; the control box is provided with a control device for operating the 's operating lever.

Further, a steering wheel for controlling the steering of the walking mechanism is installed on the control box.

Further, the excitation hammer body includes a casing and a plurality of counterweight blocks stacked in the casing, and the counterweight blocks can be taken out from the casing.

Further, the casing is provided with an opening, the opening is provided with a door that can lock the opening, and the counterweight can be taken out from the opening.

Further, a counterweight mounting frame and a limit mechanism are arranged in the housing, and a plurality of the counterweight blocks are sequentially stacked on the counterweight block mounting frame from top to bottom. The counterweight block mounting frame is connected and used to limit the uppermost counterweight block.

Further, the bottom of the excitation hammer body is arc-shaped.

Further, an installation cavity is provided in the vehicle body, and a power supply device is installed in the installation cavity; the power supply device is respectively connected with the walking mechanism, the lifting device and the control device, and is used for walking The mechanism, the lifting device and the control device are powered.

According to the heavy hammer excitation source for seismic exploration provided by the present invention, the movement of the whole excitation source is facilitated by the walking mechanism at the bottom of the vehicle body, and the moving convenience of the equipment is improved; and the lifting of the excitation hammer is realized by the control device and the lifting device, And the height position of the excitation hammer on the lifting guide rail can be adjusted mechanically. Due to the different height positions, the gravitational potential energy is different, so the adjustment of the source energy can be realized, which meets the needs of shallow and medium-shallow seismic exploration.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is a schematic structural diagram (1) of a seismic source excited by a heavy hammer for seismic exploration provided by an embodiment of the present invention;

2 is a schematic structural diagram (2) of a seismic source excited by a heavy hammer for seismic exploration provided by an embodiment of the present invention;

3 is a schematic diagram (1) of the hammering flow process of the seismic exploration heavy hammer excitation source provided by the embodiment of the present invention;

FIG. 4 is a schematic diagram (2) of a hammering flow process for exciting a seismic source with a heavy hammer for seismic exploration according to an embodiment of the present invention.

icon:

1-car body; 2-exciting hammer body; 3-travelling mechanism; 4-seat; 5-operation box; 6-operation lever; 7-steering wheel; 8-power supply device; 9-lifting guide rail.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in Figures 1 and 2, the present embodiment provides a heavy-hammer excitation source for seismic exploration. Based on the problem of portability or poor mobility of the existing heavy-hammer-excited source, this embodiment combines the entire The shock source is designed as a vehicle body 1 structure, and the convenient mobility of the shock source is realized through the walking of the vehicle body 1. In addition, the energy of the shock source is not adjustable or the adjustment is inaccurate. This embodiment starts from the principle that the shock source excites shear waves, and uses The gravitational potential energy of the heavy hammer source is changed to realize the adjustment of the source energy.

Specifically, this embodiment includes structures such as a vehicle body 1, a lifting device, an excitation hammer body 2, and a control device. Since most of the structures and control devices of the lifting device in this embodiment are located in the following control box, this embodiment No reference numerals are given to the two; wherein, the car body 1 of this embodiment is similar to the structure of the existing forklift car body 1, and the bottom of the car body 1 is provided with a running mechanism 3, and the running mechanism 3 generally includes tires. The specific structural form of the mechanism 3 can be designed with reference to the existing construction machinery body 1 , so the specific structural form of the mechanism 3 will not be described in this embodiment.

In addition, in order to facilitate the operation of the staff, the vehicle body 1 of this embodiment is provided with a seat 4 and an operation box 5, the operation box 5 is provided with a plurality of operation levers 6 or operation buttons, and the operation box 5 is also provided with a steering wheel 7. The operating lever 6 is connected with the control device to control the lifting device, and the steering wheel 7 is used to control the steering of the traveling mechanism 3 .

In addition, the vehicle body 1 of the present embodiment is provided with an installation cavity, and a power supply device 8 is installed in the installation cavity; Control unit power supply.

In order to realize the lifting and lowering of the excitation hammer body 2, a lifting guide rail 9 is provided on the front side of the vehicle body 1 in this embodiment. The structure of the lifting guide rail 9 is similar to the guide rail structure of the fork frame of the existing forklift, and the excitation hammer body 2 is installed on the lifting guide rail 9. , and slidingly fit with the lifting guide rail 9 .

As a preferred implementation of this embodiment, the height of the lifting guide rail 9 in this embodiment is higher than the height of the vehicle body 1 , so that the excitation hammer body 2 can fall from a high place, and has a larger gravitational potential energy, which in turn has a larger gravitational potential energy. source energy.

The lifting device of this embodiment is installed on the vehicle body 1 and is controlled by the control device of this embodiment. The lifting device of this embodiment can drive the excitation hammer body 2 to rise along the lifting guide rail 9 to any position on the lifting guide rail 9, and The action can be stopped under the control of the control device, and the restriction on the falling of the excitation hammer 2 can be lifted, so that the excitation hammer 2 can freely fall under its own gravity, thereby realizing the excitation of shear waves by hammering.

In this embodiment, the control device is installed on the vehicle body 1 and connected to the above-mentioned lifting device by line or wireless signal. The control device is used to open and close the lifting device, and can also control the lifting speed of the lifting device. Specifically, the control device in this embodiment may be any controller capable of sending control instructions, such as a PLC, etc. Therefore, the specific structural form and working principle of the control device are not described in this embodiment.

As shown in Figures 3 and 4, when the heavy hammer excitation source for seismic exploration of this embodiment is in operation, the excitation hammer body 2 is first lifted to the high point of the lifting guide rail 9 by the lifting device, and then the lifting device is released by the control device. The restriction of the excitation hammer 2, the specific release method is given in the following description. After the restriction is lifted, the excitation hammer 2 falls freely under the action of its own gravity, and hammers the ground to excite seismic waves.

Based on the above structural description, it can be seen that the vibration source excited by the heavy hammer for seismic exploration in this embodiment is facilitated by the traveling mechanism 3 at the bottom of the vehicle body 1 to move the entire excitation source, which improves the convenience of moving the equipment; the excitation source is realized by the control device and the lifting device. The lifting of the hammer body 2, and the height position of the excitation hammer body 2 on the lifting guide rail 9 can be adjusted mechanically. Due to the different height positions, the gravitational potential energy is different, so the adjustment of the source energy can be realized, which satisfies the shallow and medium-shallow seismic exploration. demand.

Specifically, the lifting device of this embodiment has various structural forms. For example, the lifting device of this embodiment may include a motor, a transmission, a gear and a chain (the above components are not shown in the figure); in order to simplify the structure and improve the integrity of the equipment , the upper auxiliary motor, transmission, gear and control device of this embodiment are all installed in the control box, the motor of this embodiment is preferably a DC motor, and the transmission of this embodiment is a structure such as a gear box.

In this embodiment, the output shaft of the motor is connected with the input shaft of the transmission, the output shaft of the transmission and the gear are connected with one-way transmission through a one-way bearing and other structures, the chain is connected with the gear, and the chain is also connected with the excitation hammer body 2, In order to drive the excitation hammer body 2 to rise and fall.

When the excitation hammer body 2 needs to be lifted, the motor drives the output shaft of the transmission to rotate, and the one-way bearing is in a locked state, so that the output shaft of the transmission can drive the gear to rotate when it rotates, so that the gear drives the chain to move, and drives the The chain-connected excitation hammer body 2 rises. When it is necessary to excite the hammer body 2 to fall, the control device turns off the rotation of the motor. At this time, the excitation hammer body 2 has a tendency to drive the chain to move due to its own gravity, and due to the structural characteristics of the one-way bearing, the gear can be rotated on the output shaft of the transmission , and the gear is disconnected from the output shaft of the transmission, the rotation of the gear will not affect the output shaft of the transmission, or the output shaft of the transmission will not affect the rotation of the gear in the opposite direction, so that the excitation hammer 2 can fall freely to complete the hammer hit.

Of course, the structural form of the hoisting device in this embodiment is not limited to the above-mentioned gear chain transmission, and the manner in which the hoisting device releases the transmission connection with the excitation hammer body 2 is not limited to the above-mentioned one-way bearing. For example, the hoisting device in this embodiment can also be For mechanisms such as air cylinders or oil cylinders, a telescopic structure that can be inserted and matched with the excitation hammer body 2 is provided at the outer end of the piston rod of the air cylinder or oil cylinder. When the excitation hammer body 2 needs to be lifted, the telescopic structure is inserted into the jack of the excitation hammer body 2 Then, the cylinder or oil cylinder drives the excitation hammer body 2 to rise. When the hammer body 2 needs to be excited to fall freely, the telescopic structure can be directly retracted. The telescopic structure can be any existing linear reciprocating structure, such as gear teeth. The matching structure of the strips, etc., will not be described too much in this embodiment.

In addition, the structure of the excitation hammer body 2 is improved in this embodiment, so as to further adjust the excitation energy of the excitation hammer body 2. Specifically, the excitation hammer body 2 in this embodiment includes a casing and a A plurality of counterweight blocks (not shown in the figure), the counterweight blocks can be taken out from the casing, and the take-out method can be that the casing is provided with an opening, and the opening is provided with a door that can lock the opening, and the counterweight block can be taken out from the opening.

As a preferred implementation of this embodiment, in order to prevent the movement of multiple counterweight blocks during the falling process of the excitation hammer body 2 and affect the hammering effect, the housing of this embodiment is provided with a counterweight block mounting frame and a limit mechanism , a plurality of counterweight blocks are stacked on the counterweight block mounting frame in sequence from top to bottom, and the limiting mechanism is connected with the counterweight block mounting frame and used to limit the uppermost counterweight block. Specifically, the mounting frame may be a screw structure, and each of the plurality of counterweight blocks is provided with a through hole or a screw hole inserted into the screw rod, and the limiting mechanism may include a locking member such as a nut.

As a preferred implementation of this embodiment, in order to reduce the contact area of the excitation hammer body 2 with the ground during hammering, so as to increase the hammering pressure, the bottom of the excitation hammer body 2 in this embodiment is in the shape of an arc surface, which can be specifically hemisphere, etc.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (10)

1. A heavy hammer-excited seismic source for seismic exploration, comprising:

the lifting device comprises a vehicle body, wherein a travelling mechanism is arranged at the bottom of the vehicle body, and a lifting guide rail is arranged on one side of the vehicle body;

the excitation hammer body is slidably mounted on the lifting guide rail;

the lifting device is arranged on the vehicle body and is connected with the exciting hammer body; the lifting device can drive the excitation hammer body to ascend along the lifting guide rail and is released from transmission connection with the excitation hammer body, so that the excitation hammer body falls freely;

a control device mounted on the vehicle body and configured to open and close the lifting device.

2. The heavy hammer-activated seismic source of claim 1, wherein the top of the lifting rail is at a higher elevation than the top of the vehicle body.

3. The heavy hammer-actuated seismic source for seismic exploration according to claim 1, wherein the lifting device comprises a motor, a transmission, a gear and a chain which are in sequential transmission connection;

the chain is connected with the exciting hammer body to drive the exciting hammer body to lift;

the output shaft of the speed changer is in one-way transmission connection with the gear, so that the gear can be driven to rotate when the output shaft rotates, the output shaft stops rotating, and when the chain drives the gear to rotate under the gravity of the exciting hammer body, the gear is in transmission connection with the output shaft.

4. The heavy hammer-actuated seismic source for seismic exploration according to claim 3, wherein a control box is mounted on said vehicle body, and said motor, said transmission, said gear and said control device are mounted in said control box;

and an operating rod for controlling the control device is arranged on the control box.

5. The heavy hammer-actuated seismic source for seismic exploration according to claim 4, wherein a steering wheel for steering the traveling mechanism is mounted on the control box.

6. The heavy hammer-actuated seismic source of claim 1, wherein the actuating hammer comprises a housing and a plurality of weights stacked within the housing, the weights being removable from the housing.

7. The hammer-actuated seismic source of claim 6, wherein the housing has an opening with a door that locks the opening, and the weight is removable from the opening.

8. The seismic source of claim 6, wherein the housing has a weight mounting rack and a limiting mechanism, the weights are stacked on the weight mounting rack from top to bottom, and the limiting mechanism is connected to the weight mounting rack and used for limiting the uppermost weight.

9. A hammer-actuated seismic source according to any one of claims 1 to 8, wherein the bottom of the actuating ram is curved.

10. A heavy hammer-activated seismic source as claimed in any one of claims 1 to 8, wherein a mounting cavity is provided in the vehicle body, and a power supply unit is mounted in the mounting cavity; the power supply device is respectively connected with the travelling mechanism, the lifting device and the control device and supplies power to the travelling mechanism, the lifting device and the control device.

Images