Adjustable vibration source device

Abstract

The utility model relates to the technical field of pipeline detection, in particular to an adjustable vibration source device. Comprising a moving frame, and a plurality of universal wheels with brake devices are installed at the bottom of the moving frame and used for carrying the device to a designated operation area; the transmission frame is in sliding connection with the moving frame through a limiting assembly; the vibration mechanism is mounted at the bottom end of the transmission frame and is used for causing vibration of the pipe wall; the winch is fixedly mounted on the movable frame and used for controlling the transmission frame to slide up and down relative to the movable frame; a transverse feeding mechanism and an expansion driving mechanism are carried on the transmission frame and used for sequentially driving the vibration mechanism to horizontally enter the target pipeline and then be fixed to the pipe wall. The vibration motor can be rapidly and stably erected at a to-be-detected pipe orifice through the cooperation of the winch and the transmission frame, the installation requirements of different pipe diameters can be met with the assistance of the fixing piece, and a new solution is provided for improving the efficiency and guaranteeing the safety of urban underground pipeline vibration detection.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection technology, specifically an adjustable vibration source device. Background Technology

[0002] In the field of urban pipeline health monitoring, vibration detection technology has received widespread attention in recent years as an effective non-destructive testing method. When a vibration source (such as a vibration motor) comes into contact with a pipeline and applies vibration, it drives the pipeline and its internal medium to generate periodic mechanical vibrations. The frequency, amplitude, and other parameters of the vibration source are adjustable. After vibrations of a specific frequency and amplitude are input into the pipeline system, they will propagate within the pipeline structure. Different parts of the pipeline respond differently to vibrations due to differences in structural integrity, support conditions, materials, and other factors, thus leaving characteristic information in the vibration signals. By installing sensors (such as accelerometers, velocity sensors, acoustic sensors, etc.) at different locations on the pipeline, the received vibration signals are converted into electrical signals. These electrical signals are then collected and processed to extract characteristic parameters that characterize the pipeline's state. By comparing these parameters with a database of characteristic parameters under normal pipeline conditions or with models built using machine learning and pattern recognition algorithms, the health information of the pipeline, such as whether there are defects, faults, their location, and severity, can be determined.

[0003] However, existing vibration detection devices still have many limitations in practical applications, especially in the detection of pipelines inside culverts, and are difficult to meet actual needs. Culverts are usually quite deep, with complex internal structures and harsh environments, making it difficult for general vibration detection devices to penetrate to a certain depth. In particular, the placement of the vibration source, which typically weighs around 45 kg and needs to be positioned at a right angle to the pipe opening in the culvert, is extremely difficult in the confined space of a culvert. Relying solely on manual labor to lower and place it is labor-intensive, inefficient, and, more importantly, poses safety hazards.

[0004] In view of the above problems, the market urgently needs a vibration detection device that can penetrate into culverts to a certain depth, effectively enter the sidewall pipes, make close contact with the pipe wall, and adapt to different pipe diameters. Utility Model Content

[0005] This invention aims to solve the problem that traditional vibration detection devices have low efficiency and pose safety risks because the vibration source is large and the culvert space is narrow, making it difficult to deploy in the pipes on the side wall of the culvert.

[0006] To address the aforementioned problems, this utility model provides an adjustable vibration source device, comprising:

[0007] A mobile frame, with multiple casters equipped with brakes installed at the bottom, is used to transport the device to a designated work area;

[0008] A transmission frame, wherein the transmission frame is slidably connected to a movable frame via a limiting component;

[0009] A vibration mechanism, installed at the bottom end of the transmission frame, is used to induce vibration of the pipe wall;

[0010] A winch, fixedly mounted on a movable frame, is used to control the transmission frame to slide up and down relative to the movable frame;

[0011] The transmission frame is equipped with a transverse feeding mechanism and an expansion drive mechanism, which are used to drive the vibration mechanism horizontally into the target pipe and then fix it to the pipe wall.

[0012] In one embodiment, a suspension beam is provided above the movable frame, and the winch is fixedly installed on the suspension beam;

[0013] The bottom of the transmission frame has two guide rails extending vertically outward.

[0014] Each of the guide rails is fixedly installed with a lifting lug on one side;

[0015] The winch rope is connected to the transmission frame via the lifting lug.

[0016] In one embodiment, the limiting component includes:

[0017] The limiting grooves are formed on both sides of the transmission frame;

[0018] The movable frame has a set of limiting wheels rotatably installed on its cantilever beam and bottom, corresponding to the limiting grooves. The limiting wheels are located within the limiting grooves.

[0019] In one embodiment, the lateral feed assembly includes:

[0020] Chain No. 1, which is arranged along the height direction of the transmission frame, and transmits the torque of the motor arranged at the top of the transmission frame to the bottom of the moving frame under the meshing transmission of the sprocket;

[0021] Chain No. 2, which is arranged along the length of the guide rail;

[0022] The first chain and the second chain are connected by two coaxially arranged sprockets.

[0023] The second chain is fixedly connected to the vibration mechanism, driving the vibration mechanism to slide along the guide rail.

[0024] In one embodiment, the vibration mechanism includes:

[0025] Mounting bracket, vibration motor, and fasteners;

[0026] A vibration motor is fixedly installed on one side of the mounting frame near the movable frame, and a fixing component is installed on the other side;

[0027] The fastener is fixed to the inner wall of the pipe under the drive of the expansion drive mechanism.

[0028] In one embodiment, the fixing member includes a first connecting rod, a pressing block, a second connecting rod, and a synchronizing ring;

[0029] One end of the first connecting rod is hinged to the mounting frame, and the other end is hinged to the bottom of the extrusion block;

[0030] One end of the second connecting rod is hinged to the bottom of the extrusion block, and the other end is hinged to the outer periphery of the synchronizing ring.

[0031] The first connecting rod, the second connecting rod, and the extrusion block are arranged in multiple sets with the synchronization ring as the center.

[0032] In one embodiment, the expansion drive mechanism includes a lead screw, a nut, a worm gear, a worm shaft, a flexible drive shaft, and a drive shaft.

[0033] The lead screw is coaxially arranged with the synchronous ring, and one end of the lead screw passes through the mounting bracket and is rotatably connected to the mounting bracket, while the other end is fixedly mounted with an end cap.

[0034] A nut is installed between the synchronizing ring and the lead screw, and the nut is fixedly connected to the inner wall of the synchronizing ring.

[0035] A worm gear is fitted onto one end of the lead screw near the mounting bracket;

[0036] A worm is engaged on one side of the worm wheel, wherein the worm is arranged vertically and one end is rotatably connected to the mounting bracket, and the other end is fixedly connected to the transmission flexible shaft;

[0037] The end of the flexible transmission shaft away from the worm gear is fixedly connected to one end of the transmission shaft;

[0038] The drive shaft is arranged along the height direction of the drive frame and is rotatably mounted on the surface of the drive frame via bearings and their bearing seats.

[0039] In one embodiment, the end of the drive shaft away from the flexible drive shaft has a polygonal structure and extends to the top of the drive frame.

[0040] In one embodiment, the two sides of the mounting bracket are slidably connected to the guide rail via a plurality of rollers;

[0041] The mounting bracket is fixedly connected to the second chain.

[0042] In one embodiment, anti-collision bars are fixedly installed at both the front and rear ends of the mobile frame.

[0043] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0044] This invention utilizes a winch to control the up-and-down sliding of the transmission frame, allowing the vibration mechanism to be precisely lowered into a culvert of a certain depth. The lateral feeding mechanism on the transmission frame drives the vibration mechanism horizontally into the pipe within the culvert's sidewall, meeting the specific requirements for inspecting the pipe inside the culvert's sidewall. Simultaneously, the expansion drive mechanism on the vibration mechanism expands the fixing component, ensuring close contact between the vibration motor and the inner wall of the pipe. This guarantees that the vibration signal can be stably and effectively transmitted to the pipe, providing high-quality vibration data for pipe health monitoring. Furthermore, the adjustable opening amplitude of the fixing component can adapt to the fixing requirements of pipes with different diameters, enhancing the versatility and adaptability of the device and reducing the cost and time of replacing equipment due to changes in pipe diameter. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of the vibration source device of this utility model;

[0046] Figure 2 This is a schematic diagram of the mobile frame structure of this utility model;

[0047] Figure 3 This is a schematic diagram of the vibration mechanism structure of this utility model;

[0048] Figure 4 This is a schematic diagram of the assembly structure of the vibration mechanism and guide rail of this utility model;

[0049] Figure 5 This is a schematic diagram of the assembly structure of the transmission frame and guide rail of this utility model;

[0050] Figure 6 This is a schematic diagram of the assembly structure of the transmission frame, guide rail, and vibration mechanism of this utility model;

[0051] In the diagram: 1. Moving frame; 101. Casters; 102. Suspension beam; 2. Transmission frame; 201. Guide rail; 202. Lifting lug; 203. Limiting groove; 204. Limiting wheel; 3. Vibration mechanism; 301. Mounting frame; 302. Vibration motor; 303. Link 1; 304. Link 2; 305. Extrusion block; 306. Synchronous ring; 307. Roller; 4. Winch; 5. Lateral feed mechanism; 501. Chain 1; 502. Chain 2; 6. Expansion drive mechanism; 601. Lead screw; 602. Worm gear; 603. Worm; 604. Drive shaft; 605. End cover; 7. Anti-collision bar. Detailed Implementation

[0052] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0053] like Figure 1 As shown, this utility model provides an adjustable vibration source device, including: a mobile frame 1, the bottom of which is equipped with multiple casters 101 with built-in brakes for transporting the device to a designated work area; a transmission frame 2, which is slidably connected to the mobile frame 1 via a limiting component; a vibration mechanism 3, installed at the bottom of the transmission frame 2 for inducing pipe wall vibration; a winch 4, fixedly installed on the mobile frame 1 for controlling the transmission frame 2 to slide up and down relative to the mobile frame 1; the transmission frame 2 is equipped with a transverse feeding mechanism 5 and an expansion drive mechanism 6 for sequentially driving the vibration mechanism 3 to horizontally enter the target pipe and then fix it to the pipe wall.

[0054] During urban pipeline inspections, some culverts are deep and have harsh internal environments. Installing a vibration source in the pipes on the culvert sidewalls using only manual labor would be time-consuming, labor-intensive, and pose safety hazards for personnel entering the culvert. Therefore, the adjustable vibration source device provided in this embodiment, which includes a mobile frame 1 and a transmission frame 2, allows for easy installation of a vibration source in a culvert sidewall pipe. Simply unload the mobile frame 1 from the vehicle, use the casters 101 at the bottom of the mobile frame 1 to push the device above the culvert, and lock the mobile frame 1 in place using the brakes on the casters 101.

[0055] At this point, the winch 4 is restarted. The rotating winch 4 continuously releases the rope, allowing the transmission frame 2 to move relative to the moving frame 1 into the culvert until the vibration mechanism 3 at the bottom of the transmission frame 2 is delivered to the pipe opening on the side wall of the culvert. Since part of the height of the transmission frame 2 is already inside the culvert, the height exposed above the ground is also reduced, making it easier for engineers to operate the lateral feeding mechanism 5 and the expansion drive mechanism 6 mounted at the end of the transmission frame 2. This allows the vibration mechanism 3 at the bottom of the transmission frame 2 to move laterally into the pipe to be tested, and then achieve relative fixation with the side wall of the pipe.

[0056] The vibration mechanism 3, stably fixed inside the pipe under test, can drive the pipe and its internal medium to generate periodic mechanical vibrations. Different parts of the pipe respond differently to the vibrations due to differences in structural integrity, support conditions, and materials, thus leaving characteristic information in the vibration signal. This lays the foundation for subsequent capture and identification of these characteristic information by sensors.

[0057] The entire process of lowering, positioning, and fixing the vibration mechanism 3 does not require manual operation down into the well. Relying on the coordination of the transmission frame 2, the moving frame 1, and the winch 4, the installation of the vibration mechanism 3 inside the pipe on the side wall of the culvert can be easily accomplished manually. This provides a new solution for improving the efficiency and safety of vibration detection in urban underground pipe networks.

[0058] A complete underground pipeline vibration detection system naturally includes other types of sensors and software systems that work in conjunction with the hardware equipment. Since these do not involve the invention points, this utility model will not elaborate on them.

[0059] like Figure 2 and Figure 5 As shown, a suspension beam 102 is provided above the mobile frame 1, and the winch 4 is fixedly installed on the suspension beam 102; two guide rails 201 extend vertically outward from the bottom of the transmission frame 2; a lifting lug 202 is fixedly installed on one side of each guide rail 201.

[0060] The rope of the winch 4 is connected to the transmission frame 2 via the lifting lug 202.

[0061] Specifically, the rope of the winch 4 is not directly tied to the vibration mechanism 3, but is tied to the guide rail 201 at the bottom of the transmission frame 2 via the lifting lug 202 on the side of the guide rail 201. There are two considerations for this design:

[0062] First, before the vibration mechanism 3 is installed in place, it not only has to go through the longitudinal displacement process of vertically lowering into the well, but also the lateral displacement process from the well to the well wall. Therefore, in order to avoid the interference of the rope on the winch 4 on the lateral movement of the vibration mechanism 3, the rope is not connected to the vibration mechanism 3 but to the lifting lug 202.

[0063] Secondly, although the rope of the winch 4 has strong tensile strength, its lateral strength is insufficient, making it prone to swaying underground, which could cause unnecessary impacts or collisions between the vibration mechanism 3 and the culvert wall. The transmission frame 2, on the other hand, has a certain structural strength and is slidably restrained on the moving frame 1 by the limiting components. Therefore, using the transmission frame 2 as the lowering tool for the vibration mechanism 3 completely avoids the swaying problem of the vibration mechanism 3 during underground lifting and lowering, and also ensures the accuracy and convenience of docking the vibration mechanism 3 with the wellhead and pipe opening. In this case, by tying the rope of the winch 4 to the transmission frame 2, the winch 4 acts as the power source for the lifting and lowering of the transmission frame 2, while the transmission frame 2 maintains stability during the lifting and lowering process. The two work together to achieve precise deployment of the vibration mechanism 3.

[0064] In addition, combined Figure 5As shown, preferably, the installation position of the lifting lug 202 can be set in the middle part of the guide rail 201, and the suspension beam 102 is located directly above the two lifting lugs 202, so that the release of the winch 4 rope can be straight up and down, reducing external force interference.

[0065] like Figure 2 and Figure 5 As shown, the limiting component includes: a limiting groove 203, which is formed on both sides of the transmission frame 2; and a limiting wheel 204, which is rotatably mounted on the suspension beam 102 and the bottom of the movable frame 1 corresponding to the limiting groove 203. The limiting wheel 204 is located in the limiting groove 203.

[0066] Specifically, to maintain the stability of the vibration mechanism 3 during lifting and lateral movement, limiting grooves 203 can be opened on both sides of the movable frame 1, and multiple sets of limiting wheels 204 can be arranged in multiple areas such as the suspension beam 102 position and the bottom position of the movable frame 1. The limiting wheels 204 can be specifically as follows: Figure 2 As shown, the support extends from the bottom frame of the cantilever beam 102 or the movable frame 1 to the center of the movable frame 1, and is then rotated and mounted on the support.

[0067] The limiting wheel 204 is inserted into the limiting groove 203. The limiting wheel 204, through its contact with the groove wall and its own rotatability, restricts the transmission frame 2 to slide only vertically. The traction of the winch 4 rope on the bottom guide rail 201 of the transmission frame 2 controls and limits the vertical displacement of the transmission frame 2. Thus, the transmission frame 2 can remain stable during operation and movement without affecting the lowering of the vibration mechanism 3.

[0068] like Figure 5 As shown, the transverse feed assembly 5 includes: a first chain 501, which is arranged along the height direction of the transmission frame 2 and transmits the torque of the motor arranged at the top of the transmission frame 2 to the bottom of the moving frame 1 under the meshing transmission of the sprockets; a second chain 502, which is arranged along the length direction of the guide rail 201; the first chain 501 and the second chain 502 are connected by two coaxially arranged sprockets; the second chain 502 is fixedly connected to the vibration mechanism 3 and drives the vibration mechanism 3 to slide along the guide rail 201.

[0069] The mounting bracket 301 is slidably connected to the guide rail 201 on both sides by a number of rollers 307; the mounting bracket 301 is fixedly connected to the second chain 502.

[0070] Specifically, the entire vibration mechanism 3 is mounted on the guide rail 201 via rollers 307 rotatably mounted on both sides of its mounting frame 301. This allows the vibration mechanism 3 to achieve horizontal feeding along the length of the guide rail 201 by the rolling of the rollers 307. Two coaxially fixed sprockets are rotatably mounted on one end of one guide rail 201 near the transmission frame 2, and a single sprocket is rotatably mounted on the other end. The sprockets at both ends of the guide rail 201 enable the arrangement and engagement of the second chain 502. The first chain 501 is also arranged along the height of the transmission frame 2 via multiple sprockets, with one end located at the top of the transmission frame 2 and the other end connected to the second chain 502 via two coaxially fixed sprockets.

[0071] Therefore, when the transmission frame 2 descends to the designated height, the sprocket closest to the top of the transmission frame 2 in the first chain 501 is driven to rotate by the motor (not shown in the figure). This allows the motor torque to be transmitted to the second chain 502 via the meshing transmission of the chain and sprocket. The mounting frame 301 is then fixedly connected to the second chain 502. Specifically, the central shaft of the roller 307 is extended to the side of the second chain 502 and welded in place. Thus, when the second chain 502 rotates under the drive of the sprocket, it can cause the mounting frame 301 to slide along the guide rail 201 until the fixing member in front of the vibration mechanism 3 extends into the pipe.

[0072] like Figure 3 and Figure 4 As shown, the vibration mechanism 3 includes: a mounting frame 301, a vibration motor 302, and a fixing component; the vibration motor 302 is fixedly installed on one side of the mounting frame 301 near the movable frame 1, and the fixing component is installed on the other side; the fixing component is fixed to the inner wall of the pipe under the drive of the expansion drive mechanism 6.

[0073] The fixing components include a first connecting rod 303, an extrusion block 305, a second connecting rod 304, and a synchronization ring 306; one end of the first connecting rod 303 is hinged to the mounting bracket 301, and the other end is hinged to the bottom of the extrusion block 305; one end of the second connecting rod 304 is hinged to the bottom of the extrusion block 305, and the other end is hinged to the outer periphery of the synchronization ring 306; multiple sets of the first connecting rod 303, the second connecting rod 304, and the extrusion block 305 are arranged in a circular array with the synchronization ring 306 as the center.

[0074] Specifically, the vibration motor 302 and the fixing component are fixedly installed and integrated together by the mounting bracket 301. In this way, after the extrusion block 305 in the fixing component is pressed against the inner wall of the pipe, even if the vibration motor 302 is not in direct contact with the pipe, the vibration motor 302 can transmit vibration with fixed amplitude and frequency to the pipe wall and the medium inside the pipe through the mounting bracket 301 and the extrusion block 305 after it is started.

[0075] Specifically, when the vibration mechanism 3 below the transmission frame 2 descends to the pipe opening on the side wall of the culvert, guided by the guide rail 201 and driven by the second chain 502, the fixing component at the front end of the vibration mechanism 3 will first enter the pipe opening to be tested. Since the second chain 502 is fixedly connected to the mounting bracket 301 in the vibration mechanism 3, and the retraction of the vibration mechanism 3 also needs to be considered, the vibration mechanism 3 cannot completely detach from the guide rail 201. However, the length of the guide rail 201 is sufficient to insert the fixing component entirely into the pipe.

[0076] Thus, when engineers use a socket wrench or handwheel to connect with the polygonal structure at the end of the drive shaft 604 away from the flexible drive shaft at the culvert opening and drive the drive shaft 604 to rotate, the drive shaft 604 in the expansion drive mechanism 6 will transmit the driving torque to the flexible drive shaft (not shown in the figure) and the worm gear 603 in sequence through coaxial transmission.

[0077] The worm 603 drives the lead screw 601 to rotate through meshing with the worm wheel 602. The lead screw 601, in turn, drives the nut to move along the length of the lead screw 601 through threaded meshing with the nut. Because the outer circumference of the nut is fixedly connected to the inner ring of the synchronizing ring 306, the moving nut can synchronously drive the synchronizing ring 306 to move along the length of the lead screw 601.

[0078] When the synchronizing ring 306 moves, the linkage structure consisting of the first connecting rod 303, the pressing block 305, and the second connecting rod 304 changes the distance between the pressing block 305 and the lead screw 601. For example, when the lead screw 601 drives the synchronizing ring 306 to move towards the end cap 605, the pressing block 305 will move closer to the lead screw 601 as the second connecting rod 304 deflects, thus reducing the array radius of the pressing block 305. Conversely, when the lead screw 601 reverses and drives the synchronizing ring 306 to move towards the vibrating motor 302, the pressing block 305 will move away from the lead screw 601 as the second connecting rod 304 deflects, thus increasing the array radius of the pressing block 305. Therefore, by rotating the lead screw 601 in both directions, the array radius of the pressing block 305 can be adjusted to meet the fixed requirements of different pipe inner diameters.

[0079] Among them, such as Figure 6 As shown, the upper end of the worm 603 is vertically upward. This design is to ensure that the transmission flexible shaft can smoothly transmit the torque of the transmission shaft 604 to the worm 603.

[0080] like Figure 1 As shown, anti-collision bars 7 are fixedly installed at both the front and rear ends of the mobile frame 1. The anti-collision bars 7 and the bases on the left and right sides of the mobile frame 1 form a closed-loop protective ring to prevent the vibration mechanism 3 inside the mobile frame 1 from being damaged by accidental impacts during use or transportation.

[0081] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable vibration source device, characterized in that, include: Mobile frame (1), the bottom of which is equipped with multiple casters (101) with built-in brakes, for transporting the device to the designated work area; Transmission frame (2), the transmission frame (2) is slidably connected to the movable frame (1) through a limiting component; Vibration mechanism (3) is installed at the bottom end of the transmission frame (2) and is used to cause vibration of the pipe wall; The winch (4) is fixedly installed on the movable frame (1) and is used to control the transmission frame (2) to slide up and down relative to the movable frame (1); The transmission frame (2) is equipped with a transverse feeding mechanism (5) and an expansion drive mechanism (6), which are used to drive the vibration mechanism (3) to enter the target pipe horizontally and then fix it to the pipe wall.

2. The adjustable vibration source device according to claim 1, characterized in that: A suspension beam (102) is provided above the mobile frame (1), and the winch (4) is fixedly installed on the suspension beam (102); The bottom of the transmission frame (2) has two guide rails (201) extending vertically outward. Each of the guide rails (201) is fixedly mounted with a lifting lug (202) on one side; The rope of the winch (4) is connected to the transmission frame (2) through the lug (202).

3. The adjustable vibration source device according to claim 2, characterized in that: The limiting component includes: Limiting grooves (203) are provided on both sides of the transmission frame (2); The movable frame (1) has a set of limiting wheels (204) installed on the suspension beam (102) and bottom of the frame (1) in a corresponding limiting groove (203). The limiting wheels (204) are located in the limiting groove (203).

4. The adjustable vibration source device according to claim 2, characterized in that: The lateral feed mechanism (5) includes: Chain No. 1 (501) is arranged along the height direction of the transmission frame (2) and transmits the motor torque arranged at the top of the transmission frame (2) to the bottom of the moving frame (1) under the meshing transmission of the sprocket. Chain No. 2 (502), which is arranged along the length direction of the guide rail (201); The first chain (501) and the second chain (502) are connected by two coaxially arranged sprockets. The second chain (502) is fixedly connected to the vibration mechanism (3) and drives the vibration mechanism (3) to slide along the guide rail (201).

5. The adjustable vibration source device according to claim 4, characterized in that: The vibration mechanism (3) includes: Mounting bracket (301), vibration motor (302), and fasteners; The mounting bracket (301) has a vibration motor (302) fixedly installed on one side near the movable frame (1), and a fixing component installed on the other side; The fastener is fixed to the inner wall of the pipe under the drive of the expansion drive mechanism (6).

6. The adjustable vibration source device according to claim 5, characterized in that: The fasteners include a first connecting rod (303), a pressing block (305), a second connecting rod (304), and a synchronizing ring (306). One end of the first connecting rod (303) is hinged to the mounting bracket (301), and the other end is hinged to the bottom of the extrusion block (305); One end of the second connecting rod (304) is hinged to the bottom of the extrusion block (305), and the other end is hinged to the outer periphery of the synchronizing ring (306); The first connecting rod (303), the second connecting rod (304), and the extrusion block (305) are arranged in multiple sets in a ring array with the synchronization ring (306) as the center.

7. The adjustable vibration source device according to claim 6, characterized in that: The expansion drive mechanism (6) includes a lead screw (601), a nut, a worm gear (602), a worm (603), a transmission flexible shaft, and a transmission shaft (604). The lead screw (601) is coaxially arranged with the synchronous ring (306), and one end of the lead screw (601) passes through the mounting bracket (301) and is rotatably connected to the mounting bracket (301), while the other end is fixedly installed with an end cap (605). A nut is installed between the synchronization ring (306) and the lead screw (601), and the nut is fixedly connected to the inner wall of the synchronization ring (306); A worm gear (602) is fitted onto one end of the lead screw (601) near the mounting bracket (301). The worm gear (602) is meshed with a worm (603) on one side, wherein the worm (603) is arranged vertically and one end is rotatably connected to the mounting bracket (301), and the other end is fixedly connected to the transmission flexible shaft; The end of the transmission flexible shaft away from the worm (603) is fixedly connected to one end of the transmission shaft (604); The drive shaft (604) is arranged along the height direction of the drive frame (2) and is rotatably mounted on the surface of the drive frame (2) via a bearing and its bearing seat.

8. The adjustable vibration source device according to claim 7, characterized in that: The end of the drive shaft (604) away from the drive flexible shaft has a polygonal structure and extends to the top of the drive frame (2).

9. The adjustable vibration source device according to claim 5, characterized in that: The two sides of the mounting bracket (301) are slidably connected to the guide rail (201) by a number of rollers (307); The mounting bracket (301) is fixedly connected to the second chain (502).

10. The adjustable vibration source device according to claim 1, characterized in that: Anti-collision bars (7) are fixedly installed at both the front and rear ends of the mobile frame (1).

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