A vibrator capable of realizing rotary vibration by hydraulic drive
By designing a hydraulically driven piston rod and counterweight assembly, and utilizing the change in the volume of the hydraulic oil chamber to achieve gyratory vibration, the sealing and wear problems are solved, making it suitable for exploration in special terrains.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BAODING BEIAO SPECIAL VEHICLE MFG
- Filing Date
- 2026-05-25
- Publication Date
- 2026-07-14
AI Technical Summary
Existing controllable P-wave and S-wave sources cannot meet the needs of exploration tasks in special terrains, and hydraulically driven vibrators have sealing and wear problems.
Design a hydraulically driven vibrator comprising a piston rod assembly and a counterweight assembly. The counterweight is driven to rotate and reciprocate by the change in the volume of the hydraulic oil chamber. A spring-pressed sealing structure and a diagonally symmetrical oil chamber arrangement are adopted to reduce wear.
The excitation of gyroscopic vibration was achieved, which solved the sealing problem, reduced wear, and improved the service life of the equipment.
Smart Images
Figure CN122386367A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of geological exploration technology, specifically relating to a vibrator that can achieve rotary vibration by hydraulic drive. Background Technology
[0002] With the continuous development of the exploration industry, the P-wave controllable seismic sources and S-wave controllable seismic sources currently in use on the market can no longer meet the exploration tasks of special terrains, and a vibrator that can excite torsional waves is needed.
[0003] The following issues need to be addressed to complete this design: 1. How to design a hydraulically driven vibrator mechanism that drives the hammer to rotate and reciprocate by changing the volume of the cavity formed by the hammer and the piston rod; 2. How to solve the sealing problem of the hydraulic cavity; 3. How to solve the problem of excessive wear caused by the relative rotational motion between the counterweight and the piston rod; To address the above problems, this application presents a vibrator that can achieve rotary vibration by hydraulic drive. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and design a vibrator capable of rotary reciprocating motion. The technical solution adopted in this invention is as follows: a vibrator capable of rotary vibration driven by hydraulic pressure, comprising a plate assembly, a piston rod assembly, and a counterweight assembly, wherein the piston rod assembly and the counterweight assembly are located inside the plate assembly; the piston rod assembly includes a piston rod and two first scrapers, the piston rod being composed of two cylindrical guide rods and a cylindrical main rod, the cylindrical main rod being located between the two cylindrical guide rods and integrally formed, the diameter of the cylindrical main rod being larger than the diameter of the cylindrical guide rods; two axially opposite rectangular keyways are formed on the outer wall of the cylindrical main rod, and spring holes are provided on the side of the first scrapers, with first springs installed in the spring holes, the ends of the first scrapers containing the first springs being embedded in the rectangular keyways of the cylindrical main rod; the counterweight assembly includes a thick-walled annular counterweight, an annular upper guide sleeve, an annular lower guide sleeve, two annular pressure plates, two second scrapers, and two side pressure caps; two axially opposite circular countersunk holes are formed on the outer cylindrical surface of the counterweight, and rectangular slot through holes are provided in the circular countersunk holes. The second scraper has a spring hole on its side, and a second spring is installed in the spring hole. The end of the second scraper containing the second spring is embedded in the rectangular slot through hole of the circular countersunk hole. A rectangular plate is welded to the inner side of the side pressure cover. The rectangular plate is inserted into the rectangular slot through hole on the side of the hammer and presses against the second spring of the second scraper. The side pressure cover is fixed in the circular countersunk hole of the hammer by bolts. The upper guide sleeve and the lower guide sleeve are located at the upper and lower ends of the inner ring of the hammer, respectively. The two pressure plates cover the upper guide sleeve and the lower guide sleeve, respectively. The outer surface of the guide sleeve is fixedly connected to the outer surface of the hammer with bolts; the piston rod is located inside the hammer, and the two cylindrical guide rods are respectively embedded in the upper guide sleeve and the lower guide sleeve. The cylindrical main rod is located inside the hammer, and the outer cylindrical surface of the cylindrical main rod, the lower annular surface of the upper guide sleeve, the upper annular surface of the lower guide sleeve, and the inner cylindrical surface of the hammer annular ring form an annular oil cavity; the two first scrapers and the two second scrapers divide the annular oil cavity into oil cavity A1, oil cavity B1, oil cavity A2, and oil cavity B2.
[0005] Preferably, oil chambers A1 and A2 are arranged diagonally; oil chambers B1 and B2 are also arranged diagonally; oil passages A and B are provided along the axial direction inside the piston rod; oil passages A and B extend from the upper end face of the piston rod into the cylindrical main rod of the piston rod, with oil passage A being deeper than oil passage B; the end of oil passage A branches into oil passages A1 and A2 radially inside the cylindrical main rod of the piston rod, and the end of oil passage B branches into oil passages B1 and B2 radially inside the cylindrical main rod of the piston rod; oil passage A1 is connected to oil chamber A1; oil passage A2 is connected to oil chamber A2; oil passage B1 is connected to oil chamber B1; oil passage B2 is connected to oil chamber B2; oil chambers A1 and A2 are connected to oil passage A; and oil chambers B1 and B2 are connected to oil passage B.
[0006] Preferably, the flat plate assembly includes a base, a flat plate tube, and a pressure cap on the flat plate; the flat plate tube is welded to the base as a single unit, the piston rod assembly and the counterweight assembly are located inside the flat plate tube, and the pressure cap on the flat plate covers the upper surface of the flat plate tube and is fixedly connected to the flat plate tube by bolts.
[0007] Preferably, the pressure cap on the plate has two symmetrical arc-shaped limiting holes; the counterweight assembly also includes two cylindrical limiting rods, and the upper circular surface of the counterweight has two circular holes. One end of the limiting rod is inserted and fixed in the circular hole, and the other end is located in the arc-shaped limiting hole, and the limiting rod and the pressure cap on the plate form a rotatable connection.
[0008] Preferably, each of the first scraper and the second scraper includes two spring holes, and each spring hole contains a spring.
[0009] Preferably, the piston rod has two trapezoidal keyways at both its upper and lower ends; a diamond key is provided in the trapezoidal keyway, and the upper end of the piston rod is fixedly connected to the upper cover of the plate by means of the diamond key; the lower end of the piston rod is fixedly connected to the base by means of the diamond key; both the upper cover of the plate and the base are provided with positioning grooves that cooperate with the diamond key.
[0010] The beneficial effects of this invention are as follows: This invention provides a vibrator that achieves rotary vibration through hydraulic drive. Its core lies in driving the counterweight assembly to rotate reciprocally relative to a fixed piston rod assembly by changing the volume of the hydraulic oil chamber. When oil passage A is under high pressure (oil inlet) and oil passage B is under low pressure (oil outlet), the volumes of oil chambers A1 and A2 increase, while the volumes of oil chambers B1 and B2 decrease, causing the counterweight to rotate counterclockwise (viewed from above). Similarly, when oil passage B is under high pressure (oil inlet) and oil passage A is under low pressure (oil outlet), the volumes of oil chambers A1 and A2 decrease, while the volumes of oil chambers B1 and B2 increase, causing the counterweight to rotate clockwise (viewed from above), thus achieving rotary vibration of the vibrator's counterweight.
[0011] This invention solves the sealing problem of the annular oil cavity. Because of the pressure compensation effect of the spring, the first scraper and the second scraper can be pressed against the cylindrical surface inside the counterweight cavity and the lower annular surface and the upper annular surface of the piston rod guide sleeve at all times, maintaining the sealing of the annular oil cavity and preventing leakage between oil cavities A1, B1, A2 and B2.
[0012] This invention can reduce wear on the cylindrical guide rod of the piston rod and the inner cylindrical surfaces of the upper and lower guide sleeves of the counterweight. Because oil chambers A1 and A2 are connected and symmetrically arranged, and oil chambers B1 and B2 are connected and symmetrically arranged, regardless of changes in the pressure oil in oil chambers A1, B1, A2, and B2, the lateral force balance of the piston rod and the counterweight is always maintained, thus reducing lateral wear. Attached Figure Description
[0013] Figure 1 This is an exploded view of the overall structure of the vibrator of the present invention; Figure 2 This is a side view of the overall structure of the vibrator of the present invention; Figure 3 This is a top view of the overall structure of the vibrator of the present invention; Figure 4 For the present invention Figure 2 Schematic diagram of the AA section structure; Figure 5 For the present invention Figure 2 Schematic diagram of the BB section structure; Figure 6 This is an exploded view of the piston rod assembly structure of the vibrator of the present invention; Figure 7 This is a schematic diagram of the axial cross-sectional structure of the piston rod of the vibrator of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the axial cross-sectional structure of the piston rod of the vibrator of the present invention. Figure 2 ; Figure 9 This is a top view of the piston rod of the vibrator of the present invention; Figure 10 This is an exploded view of the hammer assembly structure of the vibrator of the present invention; Figure 11 This is a schematic diagram of the weight assembly structure of the vibrator of the present invention. Figure 1 ; Figure 12 For the present invention Figure 11 Schematic diagram of the AA section structure; Figure 13 This is a schematic diagram of the weight assembly structure of the vibrator of the present invention. Figure 2 ; Figure 14 For the present invention Figure 12 Schematic diagram of the BB section structure; Figure 15 This is a schematic diagram of the oil chamber structure of the vibrator of the present invention; Figure 16 This is a schematic diagram of the vibrator of the present invention, in which the counterweight rotates clockwise when oil passage B is under high pressure (oil inlet) and oil passage A is under low pressure (oil outlet); Figure 17 For the present invention Figure 16 Cross-sectional view; Figure 18 This is a schematic diagram of the overall clockwise and counterclockwise rotation of the weight in the vibrator of the present invention when oil passage A is under high pressure (oil inlet) and oil passage B is under low pressure (oil outlet); Figure 19 For the present invention Figure 18 Cross-sectional view; Figure 20 This is a cross-sectional view of the vibrator of the present invention after the weight has been rotated 40°; Figure 21 This is a schematic diagram of the structure of the pressure cap on the flat plate of the present invention; Figure 22 This is a schematic diagram of the connection structure between the flat plate assembly and the piston rod of the present invention; Figure 23 For the present invention Figure 22 Schematic diagram of the AA section structure; Figure 24 For the present invention Figure 23 Enlarged schematic diagram of section C in the middle; Figure 25 For the present invention Figure 23 Enlarged schematic diagram of section D in the middle; Figure 26 This is an exploded view of the flat panel assembly structure of the present invention; Figure 27 This is a top view of the flat panel assembly of the present invention; Figure 28 This is a schematic diagram of the flat panel component structure of the present invention; Figure 29 For the present invention Figure 28 Schematic diagram of the AA section structure; Wherein, 1 represents the flat plate assembly, 2 represents the piston rod assembly, 3 represents the counterweight assembly, 4 represents the annular oil cavity, 1-1 represents the base, 1-2 represents the flat plate round tube, 1-3 represents the flat plate upper pressure cover, 1-4 represents the arc-shaped limiting hole, 1-5 represents the positioning groove, 2-1 represents the piston rod, 2-2 represents the first scraper, 2-3 represents the cylindrical guide rod, 2-4 represents the cylindrical main rod, 2-5 represents the rectangular keyway, 2-6 represents the first spring, 2-7 represents the trapezoidal keyway, 2-8 represents the diamond key, 3-1 represents the counterweight, 3-2 represents the upper guide sleeve, 3-3 represents the... 3-4 represents the lower guide sleeve, 3-5 represents the pressure plate, 3-6 represents the second scraper, 3-7 represents the side pressure cover, 3-8 represents the circular countersunk hole, 3-9 represents the rectangular slot through hole, 3-10 represents the second spring, 3-10 represents the rectangular plate, 3-11 represents the limit rod, 4-1 represents oil cavity A1, 4-2 represents oil cavity B1, 4-3 represents oil cavity A2, 4-4 represents oil cavity B2, 4-5 represents oil passage A, 4-6 represents oil passage B, 4-51 represents oil passage A1, 4-52 represents oil passage A2, 4-61 represents oil passage B1, and 4-62 represents oil passage B2. Detailed Implementation
[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0015] like Figure 1-14As shown, a hydraulically driven vibrator capable of rotary vibration includes a plate assembly 1, a piston rod assembly 2, and a counterweight assembly 3, with the piston rod assembly 2 and the counterweight assembly 3 located inside the plate assembly 1. The piston rod assembly 2 includes a piston rod 2-1 and two first scrapers 2-2. The piston rod 2-1 consists of two cylindrical guide rods 2-3 and a cylindrical main rod 2-4. The cylindrical main rod 2-4 is located between the two cylindrical guide rods 2-3 and is integrally formed. The diameter of the cylindrical main rod 2-4 is larger than the diameter of the cylindrical guide rods 2-3. Two openings are formed on the outer wall of the cylindrical main rod 2-4. A rectangular keyway 2-5 with opposite axes; a first spring hole is provided on the side of the first scraper 2-2, and a first spring 2-6 is provided in the first spring hole; the end of the first scraper 2-2 containing the first spring 2-6 is embedded in the rectangular keyway 2-5 of the cylindrical main rod 2-4; the counterweight assembly 3 includes a thick-walled annular counterweight 3-1, an annular upper guide sleeve 3-2, an annular lower guide sleeve 3-3, two annular pressure plates 3-4, two second scrapers 3-5, and two side pressure caps 3-6; two axially opposite circular countersunk holes 3-7 are opened on the outer cylindrical surface of the counterweight 3-1. The second scraper 3-5 has a rectangular slot through hole 3-8, and a second spring hole is provided on the side of the second scraper 3-5. A second spring 3-9 is provided in the second spring hole. The end of the second scraper 3-5 containing the second spring 3-9 is embedded in the rectangular slot through hole 3-8 of the circular countersunk hole 3-7. A rectangular plate 3-10 is welded to the inner side of the side pressure cover 3-6. The rectangular plate 3-10 is inserted into the rectangular slot through hole 3-8 on the side of the counterweight 3-1 and presses against the second spring 3-9 of the second scraper 3-5. The side pressure cover 3-6 is fixed in the circular countersunk hole 3-7 of the counterweight 3-1 by bolts. The upper guide sleeve 3-2 and the lower guide sleeve 3-3 are located at the upper and lower ends of the inner ring of the hammer 3-1, respectively. The two pressure plates 3-4 cover the outer surfaces of the upper guide sleeve 3-2 and the lower guide sleeve 3-3, respectively, and are fixedly connected to the outer surface of the hammer 3-1 by means of bolts. The piston rod 2-1 is located inside the hammer 3-1. The two cylindrical guide rods 2-3 are embedded in the upper guide sleeve 3-2 and the lower guide sleeve 3-3, respectively. The cylindrical main rod 2-4 is located inside the hammer 3-1, and the outer cylindrical surface of the cylindrical main rod 2-4, the lower annular surface of the upper guide sleeve 3-2, the upper annular surface of the lower guide sleeve 3-3, and the inner cylindrical surface of the hammer 3-1 form an annular oil cavity 4.
[0016] like Figure 15-21As shown, the two first scrapers 2-2 and the two second scrapers 3-5 divide the annular oil chamber 4 into oil chamber A14-1, oil chamber B14-2, oil chamber A24-3 and oil chamber B24-4. Oil chambers A1 4-1 and A2 4-3 are arranged diagonally; oil chambers B1 4-2 and B2 4-4 are also arranged diagonally; oil passages A4-5 and B4-6 are provided along the axial direction inside piston rod 2-1; oil passages A4-5 and B4-6 extend from the upper end face of piston rod 2-1 to the cylindrical main rod 2-4 of piston rod 2-1, with oil passage A4-5 being deeper than oil passage B4-6; at the end of oil passage A4-5, radially branching into oil passages A1 4-51 and A2 4-52 inside the cylindrical main rod 2-4 of piston rod 2-1, and at the end of oil passage B4-6, radially branching into oil passages B1 4-61 and B2 4-62 inside the cylindrical main rod 2-4 of piston rod 2-1. Oil passage A1 4-51 is connected to oil cavity A14-1; oil passage A2 4-52 is connected to oil cavity A2 4-3; oil passage B1 4-61 is connected to oil cavity B1 4-2; oil passage B2 4-62 is connected to oil cavity B2 4-4; oil cavity A1 4-1 and oil cavity A2 4-2 are connected to oil passage A 4-5; oil cavity B14-2 and oil cavity B2 4-4 are connected to oil passage B 4-6.
[0017] like Figure 20-29 As shown, the flat plate assembly 1 includes a base 1-1, a flat plate tube 1-2, and a pressure cap 1-3 on the flat plate; the flat plate tube 1-2 and the base 1-1 are welded together as a single unit, the piston rod assembly 2 and the counterweight assembly 3 are located inside the flat plate tube 1-2, and the pressure cap 1-3 on the flat plate covers the upper surface of the flat plate tube 1-2 and is fixedly connected to the flat plate tube 1-2 by means of bolts.
[0018] The pressure cap 1-3 on the flat plate has two symmetrical arc-shaped limiting holes 1-4; the counterweight assembly 3 also includes two cylindrical limiting rods 3-11. The upper circular surface of the counterweight 3-1 has two circular holes. One end of the limiting rod 3-11 is inserted and fixed in the circular hole, and the other end is located in the arc-shaped limiting hole 1-4. The limiting rod 3-11 and the pressure cap 1-3 on the flat plate are rotatably connected. Each first scraper 2-2 and second scraper 3-5 includes two spring holes, and each spring hole contains a spring.
[0019] like Figure 22-25As shown, the piston rod 2-1 has two trapezoidal keyways 2-7 at both its upper and lower ends; a rhomboid key 2-8 is provided in the trapezoidal keyway 2-7, and the upper end of the piston rod 2-1 is fixedly connected to the upper cover 1-3 of the plate by means of the rhomboid key 2-8; the lower end of the piston rod 2-1 is fixedly connected to the base 1-1 by means of the rhomboid key 2-8; both the upper cover 1-3 of the plate and the base 1-1 are provided with positioning grooves 1-5 that cooperate with the rhomboid key 2-8.
[0020] In practice, the specific operating relationship of this vibrator is as follows: Initial state: The piston rod assembly 2 is rigidly fixed to the plate assembly 1 by the diamond key 2-8, and cannot move or rotate. The counterweight assembly 3 is fitted onto the cylindrical guide rod 2-3 of the piston rod 2-1 by its upper guide sleeve 3-2 and lower guide sleeve 3-3, and can rotate around the piston rod 2-1 at a limited angle. The range of rotation is determined by the stroke of the limiting rod 3-11 within the arc-shaped limiting hole 1-4.
[0021] Under the continuous pressure of their respective springs, the working surfaces of the first scraper 2-2 and the second scraper 3-5 are always tightly pressed against the inner wall of the counterweight 3-1, the outer wall of the cylindrical main rod 2-4 of the piston rod 2-1, and the end faces of the upper guide sleeve 3-2 and the lower guide sleeve 3-3. This dynamic seal effectively prevents hydraulic oil leakage between the four oil chambers A14-1, B14-2, A24-3, and B24-4, ensuring the independence of each oil chamber.
[0022] Counterclockwise rotation (viewed from top to bottom): When high-pressure hydraulic oil enters oil passage A4-5 through the inlet at the upper end of piston rod 2-1, and oil passage B4-6 is simultaneously connected to the low-pressure return oil circuit, the high-pressure oil enters the diagonally opposite oil chambers A14-1 and A24-3, attempting to increase their volume; at the same time, the hydraulic oil in oil chambers B14-2 and B24-4 is squeezed out, reducing their volume. The resultant torque generated by this volume change drives the counterweight assembly 3 to rotate counterclockwise relative to the fixed piston rod assembly 2.
[0023] Clockwise rotation (viewed from top to bottom): Conversely, when high-pressure oil enters oil passage B4-6 and oil passage A4-5 is connected to the return oil circuit, the volume of oil chambers B1 4-2 and B2 4-4 increases, while the volume of oil chambers A14-1 and A24-3 decreases, thereby driving the counterweight assembly 3 to perform a clockwise rotational motion.
[0024] Because oil chambers A14-1, A24-3, B14-2, and B24-4 are all arranged diagonally symmetrically, the lateral forces acting on piston rod 2-1 and counterweight 3-1 remain balanced regardless of changes in internal pressure. This significantly reduces wear between the cylindrical guide rod 2-3 of the piston rod and the inner walls of counterweight 3-1, upper guide sleeve 3-2, and lower guide sleeve 3-3, thus improving the service life of the equipment.
[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A vibrator capable of rotary vibration driven by hydraulic pressure, characterized in that: The assembly includes a flat plate assembly (1), a piston rod assembly (2), and a counterweight assembly (3), wherein the piston rod assembly (2) and the counterweight assembly (3) are located inside the flat plate assembly (1); the piston rod assembly (2) includes a piston rod (2-1) and two first scrapers (2-2), wherein the piston rod (2-1) is composed of two cylindrical guide rods (2-3) and a cylindrical main rod (2-4), wherein the cylindrical main rod (2-4) is located between the two cylindrical guide rods (2-3) and is integrally formed, wherein the diameter of the cylindrical main rod (2-4) is larger than the diameter of the cylindrical guide rods (2-3); the outer wall of the cylindrical main rod (2-4) has two axially opposite rectangular keyways (2-5). The first scraper (2-2) has a first spring hole on its side, and a first spring (2-6) is installed in the first spring hole. The end of the first scraper (2-2) containing the first spring (2-6) is embedded in the rectangular keyway (2-5) of the cylindrical main rod (2-4). The counterweight assembly (3) includes a thick-walled annular counterweight (3-1), an annular upper guide sleeve (3-2), an annular lower guide sleeve (3-3), two annular pressure plates (3-4), two second scrapers (3-5), and two side pressure caps (3-6). Two axially opposite circular countersunk holes (3-7) are opened on the outer cylindrical surface of the counterweight (3-1), and a rectangular slot through hole (3-8) is provided in the circular countersunk hole (3-7). The second scraper (3-5) has a second spring hole on its side, and a second spring (3-9) is installed in the second spring hole. The end of the second scraper (3-5) containing the second spring (3-9) is embedded in the rectangular slot through hole (3-8) of the circular countersunk hole (3-7). A rectangular plate (3-10) is welded to the inner side of the side pressure cover (3-6). The rectangular plate (3-10) is inserted into the rectangular slot through hole (3-8) on the side of the counterweight (3-1) and presses against the second spring (3-9) of the second scraper (3-5). The side pressure cover (3-6) is fixed in the circular countersunk hole (3-7) of the counterweight (3-1) by bolts. The upper guide sleeve (3-2) and the lower guide sleeve (3-9) are also present. -3) Located at the upper and lower ends of the inner ring of the hammer (3-1), the two pressure plates (3-4) respectively cover the outer surfaces of the upper guide sleeve (3-2) and the lower guide sleeve (3-3) and are fixedly connected to the outer surface of the hammer (3-1) by means of bolts; the piston rod (2-1) is located inside the hammer (3-1), the two cylindrical guide rods (2-3) are respectively embedded in the upper guide sleeve (3-2) and the lower guide sleeve (3-3), the cylindrical main rod (2-4) is located inside the hammer (3-1), and the outer cylindrical surface of the cylindrical main rod (2-4), the lower annular surface of the upper guide sleeve (3-2), the upper annular surface of the lower guide sleeve (3-3) and the inner cylindrical surface of the hammer (3-1) form an annular oil cavity (4).The two first scrapers (2-2) and the two second scrapers (3-5) divide the annular oil chamber (4) into oil chamber A1 (4-1), oil chamber B1 (4-2), oil chamber A2 (4-3), and oil chamber B2 (4-4).
2. The vibrator that can achieve rotary vibration by hydraulic drive according to claim 1, characterized in that: Oil chambers A1 (4-1) and A2 (4-3) are arranged diagonally; oil chambers B1 (4-2) and B2 (4-4) are arranged diagonally; oil passages A (4-5) and B (4-6) are provided along the axial direction inside the piston rod (2-1); oil passages A (4-5) and B (4-6) extend from the upper end face of the piston rod (2-1) to the cylindrical main rod (2-4) of the piston rod (2-1), with oil passage A (4-5) being deeper than oil passage B (4-6); at the end of oil passage A (4-5), radially branching into oil passages A1 (4-51) and A2 (4-52) inside the cylindrical main rod (2-4) of the piston rod (2-1), the oil... At the end of channel B (4-6), oil channels B1 (4-61) and B2 (4-62) are radially branched inside the cylindrical main rod (2-4) of the piston rod (2-1); oil channel A1 (4-51) is connected to oil cavity A1 (4-1); oil channel A2 (4-52) is connected to oil cavity A2 (4-3); oil channel B1 (4-61) is connected to oil cavity B1 (4-2); oil channel B2 (4-62) is connected to oil cavity B2 (4-4); oil cavities A1 (4-1) and A2 (4-2) are connected to oil channel A (4-5); oil cavities B1 (4-2) and B2 (4-4) are connected to oil channel B (4-6).
3. The vibrator that can achieve rotary vibration by hydraulic drive according to claim 1, characterized in that: The flat plate assembly (1) includes a base (1-1), a flat plate tube (1-2), and a flat plate cover (1-3); the flat plate tube (1-2) and the base (1-1) are welded together as a whole, the piston rod assembly (2) and the counterweight assembly (3) are located inside the flat plate tube (1-2), and the flat plate cover (1-3) covers the upper surface of the flat plate tube (1-2) and is fixedly connected to the flat plate tube (1-2) by means of bolts.
4. The vibrator that can achieve rotary vibration by hydraulic drive according to claim 3, characterized in that: The upper cover (1-3) of the flat plate is provided with two symmetrical arc-shaped limiting holes (1-4); the weight assembly (3) also includes two cylindrical limiting rods (3-11). The upper circular surface of the weight (3-1) is provided with two circular holes. One end of the limiting rod (3-11) is inserted and fixed in the circular hole, and the other end is located in the arc-shaped limiting hole (1-4). The limiting rod (3-11) and the upper cover (1-3) of the flat plate are rotatably connected.
5. A vibrator capable of rotary vibration driven by hydraulic pressure according to claim 1, characterized in that: Each of the first scraper (2-2) and the second scraper (3-5) includes two spring holes, and each spring hole contains a spring.
6. A vibrator capable of rotary vibration driven by hydraulic pressure according to claim 3, characterized in that: The piston rod (2-1) has two trapezoidal keyways (2-7) at both its upper and lower ends; a rhombus key (2-8) is provided in the trapezoidal keyway (2-7); the upper end of the piston rod (2-1) is fixedly connected to the upper cover (1-3) of the plate by means of the rhombus key (2-8); the lower end of the piston rod (2-1) is fixedly connected to the base (1-1) by means of the rhombus key (2-8); both the upper cover (1-3) of the plate and the base (1-1) are provided with positioning grooves (1-5) that cooperate with the rhombus key (2-8).