A seismic vibrator for use in shallow seismic exploration

Abstract

The application relates to the technical field of physical exploration equipment, and discloses a vibration device for shallow seismic exploration, which comprises a main body and a vibration plate, the side wall of the main body is fixedly connected with a battery, and the bottom of the main body is fixedly connected with a fixed plate. In the process that the fixed plate is connected with the main body, the fixed block one and the U-shaped plate one of the inner wall are driven to move towards the main body, in the process that the U-shaped plate one moves, the rack of the side wall is pushed into the placing groove, so that the side wall of the U-shaped plate one and the side wall of the U-shaped plate two are combined, the vibration plate is vibrated and limited, the situation that the vibration plate moves due to the different positions of the impact column for hitting the vibration plate is reduced when the vibration plate is hit to vibrate, the vibration plate is limited in the specified position, and the accuracy of the device during exploration is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of physical exploration equipment, in particular to a vibration device for shallow seismic exploration. BACKGROUND

[0002] Seismic exploration refers to a geophysical exploration method for deducing the properties and forms of underground rock layers by observing and analyzing the propagation law of seismic waves generated by artificial earthquakes in the medium elasticity and density difference in the space range, and seismic exploration is an important means for surveying oil and gas resources before drilling, and is also widely used in coalfield and engineering geological exploration, regional geological research and crust research, and the seismic source is an important component of seismic exploration technology and is the source of seismic signals;

[0003] In the use process of the device, first, the vibration plate is placed in the interior of the device, then the motor is started, and the motor drives the gear and chain to rotate intermittently when working, the rotation of the chain drives the impact column to move up and down quickly to hit the vibration plate, so that the vibration plate emits sound waves for detection, and in the process of hitting the vibration plate by the impact column, the impact column will slightly sway when moving up due to the pulling of the chain, so that the angle of the vibration plate deviates, resulting in the vibration plate deviating due to the angle when moving down to hit the vibration plate, so that the vibration plate is slightly raised when hitting the vibration plate subsequently, thereby affecting the quality of the device during exploration. SUMMARY

[0004] The purpose of the present application is to provide a vibration device for shallow seismic exploration to solve the problems raised in the background art.

[0005] To solve the above technical problems, the present application is realized by the following technical scheme:

[0006] The present application is a vibration device for shallow seismic exploration, comprising a main body and a vibration plate, the side wall of the main body is fixedly connected with a battery, the bottom of the main body is fixedly connected with a fixed plate, and further comprising:

[0007] A sliding mechanism is installed on the bottom of the main body and is used to move when the fixed plate is connected;

[0008] A positioning mechanism is installed in the interior of the main body and is used to contract when the sliding mechanism moves.

[0009] Further, the main body comprises a rotating shaft fixedly connected to the side wall of the main body, and the main body further comprises:

[0010] A lifting assembly is installed on the side wall of the main body through a rotating part and is used to impact the vibration plate;

[0011] The rotating member comprises a gear fixedly connected to the outer surface of the rotating shaft, and the outer surface of the gear is engaged with a chain;

[0012] The moving assembly is installed on the side of the fixed plate and is used for assisting the connection of the fixed plate.

[0013] Further, the sliding mechanism comprises:

[0014] The auxiliary assembly is installed on the bottom of the main body and is used for connecting with the moving assembly when the fixed plate rotates.

[0015] The moving assembly is installed on the inside of the auxiliary assembly and is used for sliding when the moving assembly moves.

[0016] Further, the positioning mechanism comprises:

[0017] The retracting assembly is installed on the inside of the auxiliary assembly and is used for retracting when the moving assembly moves.

[0018] The buffer assembly is installed on the inner wall of the moving assembly and is used for assisting the movement of the auxiliary vibration plate.

[0019] Further, the lifting assembly comprises a lifting block fixedly connected to the outer surface of the chain, and the bottom of the lifting block is fixedly connected with an impact column.

[0020] The side wall of the lifting block is in sliding connection with the inner wall of the main body.

[0021] Further, the moving assembly comprises a fixed block one fixedly connected to the inner wall of the fixed plate, and the side of the fixed block one close to the battery is fixedly connected with a U-shaped plate one.

[0022] The side of the U-shaped plate one away from the fixed block one is fixedly connected with two racks, and the side wall of the rack is engaged with a half gear.

[0023] Further, the auxiliary assembly comprises a fixed block two fixedly connected to the bottom of the main body, and the side wall of the fixed block two is fixedly connected with a U-shaped plate two.

[0024] The side of the U-shaped plate two close to the U-shaped plate one is provided with two placing grooves, and the inner wall of the placing groove is fixedly connected with a fixed shaft.

[0025] The side wall of the placing groove is provided with an arc-shaped groove, and the outer surface of the fixed shaft is in rotational connection with the inner wall of the half gear.

[0026] Further, the moving assembly comprises a connecting rod rotationally connected to the side wall of the half gear, and one end of the connecting rod away from the half gear is rotationally connected with a pressing block.

[0027] The side wall of the two pressing blocks is in sliding connection with the side wall of the U-shaped plate two.

[0028] Further, the contraction assembly comprises a positioning plate fixedly connected to the side wall of the placing groove, a side wall of the positioning plate is slidably connected with a pushing block, and a side wall of the pushing block is fixedly connected with a spring one;

[0029] A pushing rod is arranged on a side of the pushing block close to the half gear;

[0030] Wherein, a side of the spring one away from the pushing block is fixedly connected with the inner wall of the placing groove, and the outer surface of the pushing rod is slidably connected with the inner wall of the arc-shaped groove.

[0031] Further, the buffer assembly comprises two springs two fixedly connected to a side wall of the U-shaped plate one, and an end of the spring two away from the U-shaped plate one is fixedly connected with a pushing plate;

[0032] A side wall of the pushing plate is rotatably connected with two sliding rods, and the side walls of the plurality of sliding rods are slidably connected with the side wall of the U-shaped plate one;

[0033] Wherein, the inner wall of the U-shaped plate two is fixedly connected with two springs two, and the plurality of sliding rods are fixedly connected with the side wall of the U-shaped plate two.

[0034] The present application has the following beneficial effects:

[0035] 1、In the process of connecting the fixed plate with the main body, the fixed block one in the inner wall and the U-shaped plate one are moved towards the main body, in the process of moving the U-shaped plate one, the rack in the side wall is pushed into the inside of the placing groove, so that the side wall of the U-shaped plate one and the side wall of the U-shaped plate two are combined, thereby completing the vibration of the vibration plate and limiting the vibration plate, reducing the movement of the vibration plate due to the different positions of the impact column hitting the vibration plate when the vibration plate is hit to vibrate, thereby limiting the vibration plate in the specified position, and ensuring the accuracy of the device during surveying.

[0036] 2、In the process of rotating the connecting rod clockwise, the extrusion block is pushed to slide downward on the side wall of the U-shaped plate two, and in the process of sliding the connecting rod, the soil between the U-shaped plate two and the U-shaped plate one is extruded, so that the U-shaped plate two and the U-shaped plate one can be better combined when they are connected, reducing the situation that the U-shaped plate one and the U-shaped plate two are combined, and the soil is pushed to rise when the U-shaped plate one and the U-shaped plate two move, thereby affecting the combination, so that the U-shaped plate one and the U-shaped plate two can be connected faster under the pushing of the fixed plate, further improving the stability of the device during operation.

[0037] 3、The spring is contracted after receiving the thrust force, the push block is pulled and moved, the push block continues to move to the bottom of the arc-shaped groove after the push block moves, the push block slides on the side wall of the positioning plate under the reset of the spring, thereby limiting the push rod, the situation that the extrusion block is pushed to rotate the half gear through the connecting rod due to the reaction force of the soil on the extrusion block when the extrusion block slides downward is reduced, the U-shaped plate one and the U-shaped plate two can be more stable when being connected, and the overall quality of the device is further improved.

[0038] 4、The sliding rod is pulled and moved on the side wall of the U-shaped plate one through the push plate during the contraction of the push plate, thereby reducing the thrust of the vibration plate on the U-shaped plate one or the U-shaped plate two when the vibration plate vibrates, the push plate is reset by the spring two after the vibration plate completes a vibration, the vibration plate is moved to the initial position during the reset of the push plate, thereby facilitating the next detection, the situation that the U-shaped plate one and the U-shaped plate two are deformed due to the touch of the vibration plate with the side walls of the U-shaped plate one and the U-shaped plate two when the vibration plate moves due to being hit when the device detects multiple times is reduced, the thrust of the vibration plate when moving is reduced, and the accuracy of the device when detecting is further improved.

[0039] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0041] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0042] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present application;

[0043] Figure 3 It is a schematic diagram of the moving assembly of the present application;

[0044] Figure 4 It is a schematic diagram of the auxiliary assembly of the present application;

[0045] Figure 5 It is a partial cross-sectional view of the auxiliary assembly of the present application;

[0046] Figure 6 It is a schematic diagram of the moving assembly of the present application;

[0047] Figure 7 It is a schematic diagram of the shrink assembly of the present application;

[0048] Figure 8 It is a connection relationship diagram of the shrink assembly of the present application;

[0049] Figure 9 It is a schematic diagram of the buffer assembly of the present application;

[0050] Figure 10 It is a partial sectional view of the buffer assembly of the present application.

[0051] In the drawings, the components represented by each reference numeral are listed as follows:

[0052] In the drawings: 1, main body; 101, battery; 102, fixed plate; 11, lifting assembly; 111, rotating shaft; 112, gear; 113, chain; 114, lifting block; 115, impact column; 12, moving assembly; 121, fixed block one; 122, U-shaped plate one; 123, rack; 124, half gear; 2, sliding mechanism; 21, auxiliary assembly; 211, fixed block two; 212, U-shaped plate two; 213, placing groove; 214, fixed shaft; 22, movement assembly; 221, connecting rod; 222, extrusion block; 3, positioning mechanism; 31, shrink assembly; 311, positioning plate; 312, pushing block; 313, spring one; 314, pushing rod; 32, buffer assembly; 321, spring two; 322, pushing plate; 323, sliding rod; 4, vibration plate. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0054] Please refer to Figures 1-10 The present application is a shock device for shallow seismic exploration, as shown in the drawings, which comprises a main body 1 and a vibration plate 4. The side wall of the main body 1 is fixedly connected with a battery 101. The bottom of the main body 1 is fixedly connected with a fixed plate 102. The present application further comprises:

[0055] A sliding mechanism 2 is installed at the bottom of the main body 1, which is used to move when the fixed plate 102 is connected.

[0056] A positioning mechanism 3 is installed inside the main body 1, which is used to shrink when the sliding mechanism 2 moves.

[0057] The main body 1 comprises a rotating shaft 111 fixedly connected to the side wall of the main body 1, and the main body 1 further comprises:

[0058] The lifting assembly 11 is arranged on the side wall of the main body 1 through the rotating member, and is used for impacting the vibration plate 4.

[0059] The rotating member comprises a gear 112 fixedly connected to the outer surface of the rotating shaft 111, and the outer surface of the gear 112 is engaged with a chain 113.

[0060] The moving assembly 12 is arranged on the side of the fixed plate 102, and is used for assisting the connection of the fixed plate 102.

[0061] The sliding mechanism 2 comprises:

[0062] The auxiliary assembly 21 is arranged on the bottom of the main body 1, and is used for being connected with the moving assembly 12 when the fixed plate 102 rotates.

[0063] The moving assembly 22 is arranged in the auxiliary assembly 21, and is used for sliding when the moving assembly 12 moves.

[0064] The positioning mechanism 3 comprises:

[0065] The contraction assembly 31 is arranged in the auxiliary assembly 21, and is used for contracting when the moving assembly 12 moves.

[0066] The buffer assembly 32 is arranged on the inner wall of the moving assembly 12, and is used for assisting the movement of the vibration plate 4.

[0067] The lifting assembly 11 comprises a lifting block 114 fixedly connected to the outer surface of the chain 113, and the bottom of the lifting block 114 is fixedly connected with a striking column 115.

[0068] The side wall of the lifting block 114 is slidably connected with the inner wall of the main body 1, and the gear 112 is driven to rotate in the process of rotating the rotating shaft 111, and the chain 113 is pulled to slide upward in the main body 1 in the process of rotating the gear 112, and then the rotation of the rotating shaft 111 is stopped, and the lifting block 114 falls downward rapidly under the action of the reset tension to hit the vibration plate 4 and make the vibration plate 4 vibrate.

[0069] The moving assembly 12 comprises a fixed block one 121 fixedly connected to the inner wall of the fixed plate 102, and the side of the fixed block one 121 close to the battery 101 is fixedly connected with a U-shaped plate one 122.

[0070] The side of the U-shaped plate one 122 away from the fixed block one 121 is fixedly connected with two racks 123, the side wall of the rack 123 is meshingly connected with a half gear 124, in the process of connecting the fixed plate 102 with the main body 1, the fixed block one 121 and the U-shaped plate one 122 on the inner wall thereof are driven to move towards the direction of the main body 1, in the process of moving the U-shaped plate one 122, the rack 123 on the side wall thereof is driven to enter the inside of the placing groove 213, so that the side wall of the U-shaped plate one 122 is combined with the side wall of the U-shaped plate two 212.

[0071] The auxiliary assembly 21 comprises a fixed block two 211 fixedly connected at the bottom of the main body 1, the side wall of the fixed block two 211 is fixedly connected with a U-shaped plate two 212;

[0072] The side of the U-shaped plate two 212 close to the U-shaped plate one 122 is provided with two placing grooves 213, the inner wall of the placing groove 213 is fixedly connected with a fixed shaft 214;

[0073] The side wall of the placing groove 213 is provided with an arc-shaped groove, the outer surface of the fixed shaft 214 is rotatably connected with the inner wall of the half gear 124, in the process of sliding the connecting rod 221, the soil between the U-shaped plate two 212 and the U-shaped plate one 122 is extruded, so that the U-shaped plate two 212 and the U-shaped plate one 122 can be better combined when being connected.

[0074] The motion assembly 22 comprises a connecting rod 221 rotatably connected with the side wall of the half gear 124, the end of the connecting rod 221 away from the half gear 124 is rotatably connected with an extrusion block 222;

[0075] The side wall of the two extrusion blocks 222 is slidably connected with the side wall of the U-shaped plate two 212, in the process of the rack 123 entering the inside of the placing groove 213, the half gear 124 is connected to drive the half gear 124 to rotate clockwise around the fixed shaft 214, in the process of rotating the fixed shaft 214, the connecting rod 221 connected with the fixed shaft 214 is driven to rotate.

[0076] The contraction assembly 31 comprises a positioning plate 311 fixedly connected with the side wall of the placing groove 213, the side wall of the positioning plate 311 is slidably connected with a pushing block 312, the side wall of the pushing block 312 is fixedly connected with a spring one 313;

[0077] The side of the pushing block 312 close to the half gear 124 is provided with a pushing rod 314;

[0078] The spring 313 is fixedly connected to the inner wall of the placing groove 213 away from the pushing block 312. The outer surface of the pushing rod 314 is in sliding connection with the inner wall of the arc-shaped groove. During the rotation of the half gear 124, the pushing rod 314 in contact with the half gear 124 slides downward in the arc-shaped groove. During the sliding of the pushing rod 314, the pushing rod 314 is in contact with the side wall of the pushing block 312, thereby pushing the pushing block 312 to move and applying a pushing force to the spring 313 during the continuous movement. After the spring 313 is subjected to the pushing force, the spring 313 is contracted to pull the pushing block 312 to move.

[0079] The buffer assembly 32 comprises two spring 321 fixedly connected to the side wall of the U-shaped plate 122. The end of the spring 321 away from the U-shaped plate 122 is fixedly connected with a pushing plate 322.

[0080] The side wall of the pushing plate 322 is rotatably connected with two sliding rods 323. The side wall of the sliding rod 323 is in sliding connection with the side wall of the U-shaped plate 122.

[0081] The inner wall of the U-shaped plate 212 is fixedly connected with two spring 321. The side wall of the U-shaped plate 212 is fixedly connected with the sliding rod 323. During the vibration of the vibration plate 4 subjected to the impact of the impact column 115, the side wall of the vibration plate 4 is in contact with the side wall of one of the pushing plates 322. When the side wall of the pushing plate 322 is in contact with the vibration plate 4 and is pushed by the vibration plate 4, the pushing plate 322 is contracted to pull the sliding rod 323 to move on the side wall of the U-shaped plate 122.

[0082] In use, first, the fixed plate 102 is connected with the bottom of the main body 1, then the vibration plate 4 is placed in the fixed plate 102 and the inside of the main body 1, the battery 101 is started, the battery 101 drives the rotating shaft 111 to rotate through the circuit, the rotating shaft 111 drives the gear 112 to rotate in the process of rotating, the gear 112 pulls the chain 113 to slide upward in the inside of the main body 1, then the rotating shaft 111 stops rotating, the lifting block 114 falls downward quickly under the action of the reset tension to hit the vibration plate 4 and make the vibration plate 4 vibrate, thereby completing the survey of the shallow layer of the earth's surface, in the process of connecting the fixed plate 102 and the main body 1, the fixed block one 121 and the U-shaped plate one 122 on the inner wall thereof are driven to move towards the main body 1, in the process of moving the U-shaped plate one 122, the rack 123 on the side wall thereof is pushed into the placement groove 213 to make the side wall of the U-shaped plate one 122 and the side wall of the U-shaped plate two 212 combine, thereby completing the vibration of the vibration plate 4 to limit the vibration plate 4, reducing the movement of the vibration plate 4 due to the different positions of the impact column 115 hitting the vibration plate 4 when the vibration plate 4 is hit to vibrate, thereby limiting the vibration plate 4 in the specified position, ensuring the accuracy of the device when surveying.

[0083] In the process of the rack 123 entering the inside of the placement groove 213, the half gear 124 is connected to drive the half gear 124 to rotate clockwise around the fixed shaft 214, in the process of rotating the fixed shaft 214, the connecting rod 221 connected therewith is driven to rotate, in the process of the connecting rod 221 rotating clockwise, the extrusion block 222 is pushed to slide downward on the side wall of the U-shaped plate two 212, in the process of the connecting rod 221 sliding, the soil between the U-shaped plate two 212 and the U-shaped plate one 122 is extruded, thereby better combining the U-shaped plate two 212 and the U-shaped plate one 122 when they are connected, reducing the situation that the U-shaped plate one 122 and the U-shaped plate two 212 are affected by the soil bulging when they are combined, so that the U-shaped plate one 122 and the U-shaped plate two 212 can be connected faster under the pushing of the fixed plate 102, further improving the stability of the device when running.

[0084] In the process of rotating the half gear 124, the push rod 314 in contact with the half gear 124 is pushed to slide downward in the arc-shaped groove, in the process of sliding the push rod 314, the push rod 314 is in contact with the side wall of the push block 312 to push the push block 312 to move and apply a pushing force to the spring 313, after the spring 313 is pushed, the spring 313 is contracted to pull the push block 312 to move, after the push block 312 moves, the push block 312 continues to move to the bottom of the arc-shaped groove, after the push rod 314 moves, the push block 312 is in sliding on the side wall of the positioning plate 311 under the reset pushing of the spring 313 to limit the push rod 314, which reduces the situation that the half gear 124 is pushed to rotate by the extrusion block 222 through the connecting rod 221 due to the reaction force of the soil on the extrusion block 222 when the extrusion block 222 slides downward, so that the U-shaped plate 122 and the U-shaped plate 212 can be more stable when being connected, and the overall quality of the device is further improved.

[0085] In the process of the vibration plate 4 being hit by the impact column 115 to vibrate, the side wall of the vibration plate 4 is in contact with the side wall of one of the push plates 322, when the side wall of the push plate 322 is in contact with the vibration plate 4 to be pushed by the vibration plate 4, the push plate 322 is contracted to pull the sliding rod 323 to move on the side wall of the U-shaped plate 122, so as to slow down the pushing force of the vibration plate 4 on the U-shaped plate 122 or the U-shaped plate 212 when the vibration plate 4 vibrates, after the vibration plate 4 completes a vibration, the spring 321 pushes the push plate 322 to reset, in the process of resetting the push plate 322, the push plate 322 pushes the vibration plate 4 to move to the initial position, so as to facilitate the next detection, and the situation that the U-shaped plate 122 and the U-shaped plate 212 are deformed due to the vibration plate 4 being in contact with the side wall of the U-shaped plate 122 and the U-shaped plate 212 when the device is detected for many times is reduced, so as to slow down the pushing force of the vibration plate 4 when the vibration plate 4 moves, and the accuracy of the device when detecting is further improved.

[0086] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and limit the present application to the specific embodiments described. Obviously, according to the content of the present application, many modifications and changes can be made. The embodiments are selected and described in the present application in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and use the present application. The present application is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A seismic excitation device for shallow seismic exploration, comprising a main body (1) and a vibrating plate (4), wherein a battery (101) is fixedly connected to the side wall of the main body (1), and a fixing plate (102) is fixedly connected to the bottom of the main body (1), characterized in that, Also includes; The sliding mechanism (2) is installed at the bottom of the main body (1) and is used to move when the fixed plate (102) is connected; Positioning mechanism (3), which is installed inside the main body (1) and is used to retract when the sliding mechanism (2) moves; The main body (1) also includes a movable component (12), which is installed on the side of the fixed plate (102) and is used to assist in the connection of the fixed plate (102); The sliding mechanism (2) includes: An auxiliary component (21) is installed at the bottom of the main body (1) and is used to connect with the moving component (12) when the fixed plate (102) rotates; A motion component (22) is installed inside the auxiliary component (21) and is used to slide when the moving component (12) moves; The movable component (12) includes a fixing block (121) fixedly connected to the inner wall of the fixing plate (102), and a U-shaped plate (122) is fixedly connected to the side of the fixing block (121) near the battery (101). Two racks (123) are fixedly connected to the side of the U-shaped plate (122) away from the fixed block (121), and half gears (124) are meshed with the sidewalls of the racks (123). The auxiliary component (21) includes a fixing block two (211) fixedly connected to the bottom of the main body (1), and a U-shaped plate two (212) is fixedly connected to the side wall of the fixing block two (211). The second U-shaped plate (212) has two placement slots (213) on the side near the first U-shaped plate (122), and the inner wall of the placement slot (213) is fixedly connected to the fixing shaft (214). The side wall of the placement groove (213) is provided with an arc-shaped groove, and the outer surface of the fixed shaft (214) is rotatably connected to the inner wall of the half gear (124). The motion component (22) includes a connecting rod (221) rotatably connected to the side wall of the half gear (124), and a pressing block (222) is rotatably connected to one end of the connecting rod (221) away from the half gear (124). The sidewalls of the two extrusion blocks (222) are slidably connected to the sidewall of the second U-shaped plate (212).

2. The seismic excitation device for shallow seismic exploration according to claim 1, characterized in that: The main body (1) includes a rotating shaft (111) fixedly connected to the side wall of the main body (1), and the main body (1) also includes: The lifting assembly (11) is installed on the side wall of the main body (1) via a rotating component and is used to impact the vibrating plate (4); The rotating component includes a gear (112) fixedly connected to the outer surface of the rotating shaft (111), and a chain (113) is meshed with the outer surface of the gear (112).

3. The seismic excitation device for shallow seismic exploration according to claim 2, characterized in that: The positioning mechanism (3) includes: A retraction component (31) is installed inside the auxiliary component (21) for retracting when the moving component (12) moves; A buffer assembly (32) is installed on the inner wall of the moving assembly (12) for use in the movement of the auxiliary vibration plate (4).

4. A seismic excitation device for shallow seismic exploration according to claim 3, characterized in that: The lifting assembly (11) includes a lifting block (114) fixedly connected to the outer surface of the chain (113), and an impact column (115) is fixedly connected to the bottom of the lifting block (114). The side wall of the lifting block (114) is slidably connected to the inner wall of the main body (1).

5. A seismic excitation device for shallow seismic exploration according to claim 4, characterized in that: The shrinking assembly (31) includes a positioning plate (311) fixedly connected to the side wall of the placement slot (213), a pushing block (312) slidably connected to the side wall of the positioning plate (311), and a spring (313) fixedly connected to the side wall of the pushing block (312). The push block (312) has a push rod (314) on the side near the half gear (124). The side of the spring (313) away from the push block (312) is fixedly connected to the inner wall of the placement groove (213), and the outer surface of the push rod (314) is slidably connected to the inner wall of the arc groove.

6. A seismic excitation device for shallow seismic exploration according to claim 5, characterized in that: The buffer assembly (32) includes two springs (321) fixedly connected to the side wall of the U-shaped plate (122), and a push plate (322) is fixedly connected to the end of the spring (321) away from the U-shaped plate (122). The side wall of the push plate (322) is rotatably connected to two sliding rods (323), and the side walls of several sliding rods (323) are slidably connected to the side wall of the U-shaped plate (122). Among them, two springs (321) are fixedly connected to the inner wall of the U-shaped plate (212), and several sliding rods (323) are fixedly connected to the side wall of the U-shaped plate (212).

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