Multi-shaft vibration exciter having compact structure

Abstract

The present invention relates to the technical field of vibration exciters, and in particular to a multi-shaft vibration exciter having a compact structure, comprising a casing, wherein four shafts are mounted on the casing; power gears on the four shafts are sequentially meshed in pairs; an outermost first main shaft is connected to an external power motor by means of a universal coupling; the power motor drives the power gear on the first main shaft by means of the universal coupling to enable sequential transmission across the four shafts; further, counterweight assemblies are respectively mounted on end portions of first main shafts and second main shafts; the counterweight assemblies comprise fan-shaped fixed counterweight discs; the chords of the plurality of fixed counterweight discs are arranged in a same direction; the outer circle formed by a rotating trajectory of a fixed counterweight disc does not interfere with the first main shaft or second main shaft which is adjacent to the fixed counterweight disc. According to this vibration exciter, four shafts are provided, the four shafts share the original load of two shafts, and a bearing can be made relatively smaller, thereby reducing operational heat generation of the bearing; in addition, the stability of the vibration exciter is improved, the service life is prolonged, and the maximum production capacity in application of the vibration exciter is improved.

Description

A compact multi-axis vibrator Technical Field

[0001] The present invention relates to the technical field of vibrators, and in particular to a multi-axis vibrator with a compact structure. Background Art

[0002] With the development of industrial production, the demand for vibration equipment is increasing. The power source for vibration equipment to generate vibration mainly comes from the exciter. The exciter generates vibration and transmits the vibration to equipment such as vibrating screens to meet work requirements.

[0003] Chinese invention patent application number CN201910322679.9 discloses a dual-axis inertial vibrator, including a rotary power source, a circular gear transmission mechanism and at least two identical eccentric mechanisms; the eccentric mechanism includes an eccentric mass block rotating around the rotary axis; the rotary power source drives the eccentric mass to rotate around the rotary axis through the circular gear transmission mechanism; the rotational speed of each eccentric mass block is consistent, and the component of the resultant eccentric force generated by all eccentric mass blocks on the plane is 0. Depending on the order of the driven non-circular gear pitch curve, an asymmetric inertial vibrator and an enhanced inertial vibrator can be realized.

[0004] However, the applicant has found that the prior art has at least the following problems:

[0005] Variable load cycles place high demands on bearings, leading to high operating temperatures. To meet these requirements, the common approach is to thicken the shaft and enlarge the bearings, which increases costs. Even with larger bearings, the high operating temperature issue persists. Furthermore, the larger the bearing, the greater the linear speed of the outer ring, which increases heat generation. This increases the temperature even with heavy loads. As customer production lines increase capacity and equipment becomes increasingly larger, intelligent, and automated, thicker shafts and larger bearings no longer meet operational and functional requirements.

[0006] Summary of the Invention

[0007] In view of this, the purpose of the present invention is to provide a compact multi-axis exciter to solve the problem that the existing exciter bearings have high operating temperatures and cannot meet the use and functional requirements:

[0008] Based on the above-mentioned purpose, the present invention provides a compact multi-axis exciter, including a casing, on which two first main shafts and two second main shafts are installed, the first main shaft and the second main shaft are different in length, and power gears are respectively installed on the first main shaft and the second main shaft, the first main shaft and the second main shaft are staggered, and the first main shaft located at the edge is connected to a power motor through a coupling, and the power motor drives the power gear to transmit the four shafts successively, and the two groups of first main shafts rotate synchronously, and the two groups of second main shafts rotate synchronously, and the ends of the first main shaft and the second main shaft are respectively installed with counterweight assemblies, and the counterweight assembly includes a fan-shaped fixed counterweight disk, and the chords of the multiple fixed counterweight disks are in the same direction. The outer circle formed by the rotation trajectory of the fixed counterweight disk does not interfere with the first main shaft and the second main shaft adjacent to it.

[0009] Optionally, the power gear is meshed with a pinion, the pinion is fixedly connected to a transmission shaft, the transmission shaft is dynamically connected to an oil pump and a generator, lubricating oil is added to the casing, a flow stabilizer is provided at the lower right corner of the casing, the flow stabilizer is inclined to the bottom surface of the casing, a filter is provided under the flow stabilizer, the filter is connected to an oil circulation pipeline distributed inside the casing, the oil circulation pipeline is connected to an oil pump, and an oil pressure filter and a nozzle are also provided on the top of the casing, the nozzle sprays lubricant onto the bearings and gears.

[0010] Optionally, an oil baffle is installed on the first main shaft and the second main shaft respectively, and the oil baffle, the skeleton oil seal and the labyrinth seal structure are used to prevent the lubricating oil from flowing out of the casing.

[0011] Optionally, the end face of the adjusting counterweight disk is integrally formed with a connecting shaft, a accommodating cavity is provided inside the connecting shaft, a plurality of groups of counterweight cavities are arrayed inside the disk body of the adjusting counterweight disk, the plurality of groups of counterweight cavities are isolated from each other, a connecting channel is connected between the counterweight cavity and the accommodating cavity, a mounting seat is fixedly installed on the inner wall of the accommodating cavity, a plurality of groups of blocking blocks are arrayed on the mounting seat, the blocking blocks are connected to a driver for driving the blocking blocks to open and block the connecting channel, a sealed bearing is installed at the end of the connecting shaft, the sealed bearing is connected to the connecting shaft, the connecting shaft is hollow inside, the connecting shaft is connected to a cooling plate, a cooling pipe is connected inside the cooling plate, the cooling pipe is connected to a water pump for pumping water into the connecting shaft, a rotary connector is provided inside the connecting shaft, the rotary connector is electrically and rotatably connected to the mounting seat for supplying power to the driver, and the rotary connector is fixedly installed on the cooling plate.

[0012] Optionally, a conductive cable is embedded in the cooling plate, and the conductive cable electrically connects the generator to the rotary connector, so that the generator supplies power to the driver.

[0013] Optionally, a plurality of mounting grooves are provided on the periphery of the mounting seat, and drivers are installed in the mounting grooves.

[0014] Optionally, a conduit is installed in the counterweight chamber, which extends to the outside of the communicating channel until it is connected to the mounting slot. A switching pipe is provided between the mounting slot and the communicating channel. A suction port and an injection port are provided on the side wall of the switching pipe. The suction port is lower than the injection port. The injection port is connected to the accommodating chamber and is used to inject water into the counterweight chamber. The suction port is connected to a suction component for extracting the water injected into the counterweight chamber.

[0015] Optionally, the suction assembly includes a connecting rod connected to a rotary connector, the connecting rod is fixedly mounted on the cooling plate, a suction channel is opened inside the connecting rod, the suction channel is communicated with the cooling plate, an extraction pipe is connected inside the cooling plate, the extraction pipe is connected to a suction pump, a plurality of suction holes are opened on the side wall of the suction channel, a sealing ring is rotatably mounted on the connecting rod, the sealing ring is sleeved on the outside of the plurality of suction holes, a flow chamber is provided inside the sealing ring, the flow chamber is connected with the plurality of suction holes, the flow chamber is also connected to a suction pipe, and the suction pipe is connected to the suction port.

[0016] Optionally, a water cooling pipe is embedded in the casing, and the water cooling pipe is connected to the extraction pipe and the cooling pipe in the cooling plate.

[0017] Optionally, the plurality of counterweight cavities are symmetrically arranged with a vertical line downward from the axis of the first main shaft or the second main shaft connected thereto as a symmetry axis.

[0018] Beneficial effects of the present invention:

[0019] 1. By increasing the number of axes to four, the four axes share the load of the original two axes, and the bearings can be made relatively smaller, reducing the heat generated by the bearings. At the same time, the stability of the exciter is increased, the service life is extended, and the production capacity limit of the exciter application is increased.

[0020] 2. The existing vibrator gears and bearings are lubricated by immersing the tooth surface of the gear below the lubricating oil level, bringing the lubricating oil away from the bottom of the box, and transmitting it to each gear through the gear meshing. The oil splashed by the gear rotation is thrown onto the bearings to lubricate the bearings; this vibrator can stably and continuously lubricate the power gears and bearings by adding a lubrication system and a lubricating oil pump. Adding a filter to the lubrication system can improve the oil quality for lubricating the power gears and bearings.

[0021] 3. Because the vibrator is a vibrating component, if there are external leads, there will be safety hazards, some electrical components such as vibration sensors and temperature sensors cannot be used, and there will be difficulties in intelligentization. This vibrator can power the electrical components used on the vibrator through the built-in generator. Without external leads, it can be turned into an intelligent component, providing support for the intelligent digitization of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] FIG1 is a schematic diagram of a compact multi-axis vibration exciter according to an embodiment of the present invention;

[0024] FIG2 is a schematic diagram of a counterweight assembly of a compact multi-axis vibrator according to an embodiment of the present invention;

[0025] FIG3 is a schematic diagram of the assembly of a counterweight assembly of a compact multi-axis vibrator according to an embodiment of the present invention;

[0026] FIG4 is a schematic diagram of the meshing of power gears of a compact multi-axis vibrator according to an embodiment of the present invention;

[0027] FIG5 is a schematic structural diagram of a counterweight assembly of a compact multi-axis vibrator according to an embodiment of the present invention;

[0028] FIG6 is a schematic diagram of the internal structure of a counterweight assembly of a compact multi-axis vibrator according to an embodiment of the present invention;

[0029] FIG7 is a schematic diagram of the internal structure of an adjustment counterweight plate of a compact multi-axis vibration exciter according to an embodiment of the present invention;

[0030] FIG8 is a cross-sectional schematic diagram of an adjustment counterweight plate of a compact multi-axis vibration exciter according to an embodiment of the present invention;

[0031] FIG9 is a partial enlarged schematic diagram of portion A in FIG8 ;

[0032] FIG10 is a schematic diagram of the internal assembly of an adjustable counterweight plate of a compact multi-axis vibrator according to an embodiment of the present invention;

[0033] FIG11 is a partial enlarged schematic diagram of portion B in FIG10 ;

[0034] FIG12 is a schematic diagram of an oil circulation pipeline of a compact multi-axis vibrator according to an embodiment of the present invention;

[0035] FIG13 is a schematic diagram showing the motion of a compact multi-axis vibrator counterweight assembly according to an embodiment of the present invention.

[0036] The following are marked in the figure:

[0037] 101, housing; 102, cooling plate; 103, cooling pipe; 104, extraction pipe; 201, first spindle; 202, oil baffle; 203, transmission shaft; 204, second spindle; 301, adjusting counterweight plate; 302, fixing counterweight plate; 303, connecting shaft; 304, sealed bearing; 305, connecting shaft; 306, rotary connector; 307, accommodating chamber; 308, blocking block; 309, connecting channel; 310, Mounting seat; 311, counterweight chamber; 312, driver; 401, power gear; 402, pinion; 501, flow stabilizer; 502, filter; 503, oil circulation pipeline; 504, oil pump; 505, nozzle; 601, conduit; 602, suction port; 603, filling port; 604, connecting rod; 605, suction channel; 606, suction hole; 607, sealing ring; 608, flow chamber; 609, suction tube. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0039] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0040] As shown in Figures 1 to 7, a specific embodiment of the present invention provides a compact multi-axis exciter, including a housing 101, on which are mounted two first main shafts 201 and two second main shafts 204, the first main shafts 201 and the second main shafts 204 being of different lengths, and power gears 401 being mounted on the first main shafts 201 and the second main shafts 204, respectively. The first main shafts 201 and the second main shafts 204 are alternately arranged, and the power gears 401 on the four shafts are meshed with each other in pairs in sequence. The first main shaft 201 at the edge is connected to the first main shaft 201 by a universal coupling. An external power motor is connected, which drives the power gear 401 through a universal joint to sequentially transmit the four shafts. The two sets of first main shafts 201 rotate synchronously, and the two sets of second main shafts 204 rotate synchronously. The ends of the first main shafts 201 and the second main shafts 204 are also respectively mounted with a counterweight assembly. The counterweight assembly includes a fan-shaped fixed counterweight disk 302. The chords of the multiple fixed counterweight disks 302 are aligned in the same direction. The outer circle formed by the rotation trajectory of the fixed counterweight disks 302 does not interfere with the adjacent first main shafts 201 and second main shafts 204. Preferably, the fan-shaped fixed counterweight disk 302 is semicircular.

[0041] During operation, as shown in Figure 13, the first main shaft 201 located at the outermost edge is driven to rotate by the power motor, and the power gear 401 on the first main shaft 201 drives the second main shaft 204 adjacent to it to rotate, thereby driving the first main shaft 201 adjacent to the second main shaft 204 to rotate, and finally drives the second main shaft 204 adjacent to the first main shaft 201 to rotate. During this process, the counterweight assembly rotates, and during the rotation of the fixed counterweight plate 302, the left and right centrifugal forces of multiple groups of fixed counterweight plates 302 offset each other, and the centrifugal forces in the upper and lower directions are in the same direction, and when the fan is facing upward and downward, the centrifugal force reaches the maximum. This vibrator is set up with four main shafts, and the four main shafts are staggered. The distance between adjacent main shafts can just accommodate the rotation of the counterweight assembly, making full use of space, compact structure, and the four-axis structure can carry more loads, reduce operating temperature, and extend the life of the vibrator.

[0042] In some optional specific embodiments, as shown in Figures 1 to 3 and Figures 12 to 13, the power gear 401 is meshed with a pinion 402, the pinion 402 is fixedly connected to the transmission shaft 203, the transmission shaft 203 is dynamically connected to an oil pump 504 and a generator, lubricating oil is added to the casing 101, a flow stabilizer 501 is provided at the lower right corner of the casing 101, the flow stabilizer 501 is inclined to the bottom surface of the casing 101, preferably, the inclination angle is 45°, a filter 502 is provided below the flow stabilizer 501, the filter 502 is connected to an oil circulation pipeline 503 distributed inside the casing 101, the oil circulation pipeline 503 is connected to the oil pump 504, and an oil pressure filter and a nozzle 505 are also provided on the top of the casing 101, the nozzle 505 sprays the lubricant onto the power gear 401, and a distribution pipeline is provided on the top of the casing 101, the distribution pipeline transports the lubricating oil to the bearing. During use, there is a certain amount of lubricating oil inside the casing 101. The vibrator works, causing the small gear 402 to rotate, driving the oil pump 504 to work. The oil pump 504 pumps the lubricating oil filtered by the filter 502 to the nozzle 505 through the oil circulation pipeline 503. The nozzle 505 sprays the lubricating oil onto the gears and bearings to perform fixed-point cooling, which has a better cooling effect. In addition, the lubricating oil is circulated and filtered through a specific oil circuit, so the lubricating oil is not easy to get dirty and the lubrication effect is better. The generator can power the signal elements on the vibrator.

[0043] In some optional specific embodiments, as shown in Figures 1 to 7, the first main shaft 201 and the second main shaft 204 are respectively installed with an oil baffle 202, a skeleton oil seal and a labyrinth seal structure to prevent the lubricating oil from flowing out of the casing 101.

[0044] In some optional specific embodiments, as shown in Figures 5 to 7, the counterweight assembly includes an adjustable counterweight plate 301 connected to a fixed counterweight plate 302, a connecting shaft 303 is integrally formed on the end surface of the adjustable counterweight plate 301, a receiving cavity 307 is provided inside the connecting shaft 303, a plurality of groups of counterweight cavities 311 are arranged in an array inside the disk body of the adjustable counterweight plate 301, the plurality of groups of counterweight cavities 311 are isolated from each other, a connecting channel 309 is connected between the counterweight cavity 311 and the receiving cavity 307, a mounting seat 310 is fixedly installed on the inner wall of the receiving cavity 307, a plurality of groups of blocking blocks 308 are arranged in an array on the mounting seat 310, and the blocking blocks 308 are connected to a driver 312 is used to drive the blocking block 308 to open and block the connecting channel 309. A sealed bearing 304 is installed at the end of the connecting shaft 303. The sealed bearing 304 is connected to the connecting shaft 305. The connecting shaft 305 is hollow inside. The connecting shaft 305 is connected to the cooling plate 102. The cooling plate 102 is internally connected to the cooling pipe 103. The cooling pipe 103 is connected to a water pump for pumping water into the connecting shaft 305. A rotary connector 306 is provided inside the connecting shaft 305. The rotary connector 306 is electrically rotatably connected to the mounting seat 310 for supplying power to the driver 312. The rotary connector 306 is fixedly mounted on the cooling plate 102. During use, when the vibration amplitude needs to be adjusted, water is pumped into the connecting shaft 305 through the cooling pipe 103 by the water pump, and power is supplied to the driver 312 on the mounting seat 310 through the rotating connector 306. The driver 312 is started, and the connecting channel 309 connected to the counterweight chamber 311 that needs water supply is opened, and water is supplied to the counterweight chamber 311 for counterweighting. The more the counterweight chamber 311 filled with water overlaps with the fixed counterweight plate 302, the greater the overlap between the gravity part of the adjusting counterweight plate 301 and the counterweight area of ​​the fixed counterweight plate 302, the farther the center of gravity is from the rotation axis, and the greater the periodic centrifugal force. Conversely, the counterweight chamber 311 is filled with water in the part that does not overlap with the fixed counterweight plate 302, the closer the center of gravity is to the rotation axis, and the smaller the periodic centrifugal force, thereby changing the vibration intensity. When the water-filled counterweight chamber 311 needs to be reset, the connecting channel 309 is opened and it is turned upside down to be poured out.

[0045] In some optional embodiments, as shown in FIG. 3 to FIG. 5 , a conductive cable is embedded in the cooling plate 102 , and the conductive cable electrically connects the generator to the rotary connector 306 , so that the generator supplies power to the driver 312 .

[0046] In some optional specific embodiments, as shown in FIG. 8 and FIG. 9 , a plurality of mounting grooves are provided on the periphery of the mounting seat 310 , and the drivers 312 are installed in the mounting grooves.

[0047] In some optional specific embodiments, as shown in Figures 8 to 11, a conduit 601 is installed in the counterweight chamber 311, and the conduit 601 extends to the outside of the communication channel 309 until it is connected to the installation slot. A switching pipe is provided between the installation slot and the communication channel 309, and a suction port 602 and an injection port 603 are provided on the side wall of the switching pipe. The suction port 602 is lower than the injection port 603, and the injection port 603 is connected to the accommodating chamber 307 for injecting water into the counterweight chamber 311. The suction port 602 is connected to a suction component for extracting the water injected into the counterweight chamber 311. During use, when the vibration amplitude needs to be changed, the position of the block 308 is changed, and the normal end of the block 308 is in the connecting channel 309. When water needs to be injected into the counterweight chamber 311, the block 308 is moved to the installation groove, and does not block the filling port 603 and the suction port 602. After the filling is completed, the block 308 continues to move into the connecting channel 309. When the water in the counterweight chamber 311 needs to be extracted, the block 308 is moved to the filling port 603, the filling port 603 is blocked, and the suction port 602 is connected to the counterweight chamber 311.

[0048] In some optional specific embodiments, as shown in Figures 10 and 11, the suction assembly includes a connecting rod 604 connected to the rotary connector 306, the connecting rod 604 is fixedly mounted on the cooling plate 102, a suction channel 605 is opened inside the connecting rod 604, the suction channel 605 is communicated with the cooling plate 102, the cooling plate 102 is connected to the extraction pipe 104, the extraction pipe 104 is connected to the suction pump, a plurality of suction holes 606 are opened on the side wall of the suction channel 605, a sealing ring 607 is rotatably mounted on the connecting rod 604, the sealing ring 607 is sleeved on the outside of the plurality of suction holes 606, a flow chamber 608 is provided inside the sealing ring 607, the flow chamber 608 is connected to the plurality of suction holes 606, the flow chamber 608 is also connected to a suction tube 609, and the suction tube 609 is connected to the suction port 602. During use, the counterweight plate 301 is adjusted to rotate, the mounting seat 310 rotates, and the sealing ring 607 rotates relative to the connecting rod 604, thereby enabling the counterweight to be adjusted during operation. It should be noted that the machine can also be shut down or slowed down according to the working conditions.

[0049] In some optional embodiments, a water cooling pipe is embedded in the housing 101 and communicates with the extraction pipe 104 and the cooling pipe 103 in the cooling plate 102. After the water that has absorbed heat from the water cooling pipe is pumped into the counterweight cavity 311, the counterweight cavity 311 rotates continuously, dissipating heat from the water more quickly. After the water in the counterweight cavity 311 is extracted, it is pumped into the water cooling pipe to dissipate heat from the housing 101.

[0050] In some optional specific embodiments, the plurality of counterweight cavities 311 are symmetrically arranged with a vertical line from the axis of the first main shaft 201 or the second main shaft 204 to which they are connected being used as a symmetry axis.

[0051] Working principle of the present invention: The present invention provides a compact multi-axis vibration exciter. When working, as shown in Figure 13, the power motor drives the first main shaft 201 located at the outermost edge to rotate, and the power gear 401 on the first main shaft 201 drives the second main shaft 204 adjacent to it to rotate, thereby driving the first main shaft 201 adjacent to the second main shaft 204 to rotate, and finally driving the second main shaft 204 adjacent to the first main shaft 201 to rotate. During this process, the counterweight assembly rotates, and during the rotation of the fixed counterweight plate 302, the left and right centrifugal forces of the multiple groups of fixed counterweight plates 302 offset each other, and the centrifugal forces in the upper and lower directions are in the same direction. When the fan is facing upward and downward, the centrifugal force reaches its maximum. This vibration exciter is provided with four main shafts, and the four main shafts are staggered. The distance between adjacent main shafts is just enough to accommodate the rotation of the counterweight assembly, making full use of space, and having a compact structure. In addition, the four-axis structure can carry more loads, reduce the operating temperature, and extend the life of the exciter.

[0052] In addition, there is a certain amount of lubricating oil inside the casing 101. When the vibrator works, the small gear 402 rotates, driving the oil pump 504 to work. The oil pump 504 pumps the lubricating oil filtered by the filter 502 to the nozzle 505 through the oil circulation pipeline 503. The nozzle 505 sprays the lubricating oil onto the gears and bearings to perform fixed-point cooling, which has a better cooling effect. In addition, the lubricating oil is circulated and filtered through a specific oil circuit, so the lubricating oil is not easy to get dirty and the lubrication effect is better. The generator can power the signal elements on the vibrator.

[0053] When the vibration amplitude needs to be adjusted, water is pumped into the connecting shaft 305 through the cooling pipe 103 by a water pump, and power is supplied to the driver 312 on the mounting seat 310 through the rotating connector 306. The driver 312 starts, opens the connecting channel 309 connected to the counterweight chamber 311 that needs water supply, and supplies water to the counterweight chamber 311 for counterweighting. The more the counterweight chamber 311 filled with water overlaps with the fixed counterweight plate 302, the greater the overlap between the gravity part of the adjusting counterweight plate 301 and the counterweight area of ​​the fixed counterweight plate 302, the farther the center of gravity is from the axis of rotation, and the greater the periodic centrifugal force. Conversely, the counterweight chamber 311 is filled with water in the part that does not overlap with the fixed counterweight plate 302, the closer the center of gravity is to the axis of rotation, and the smaller the periodic centrifugal force, thereby changing the vibration intensity.

[0054] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0055] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A structurally compact multi-axis vibrator, characterized in that, A compact multi-axis vibrator, comprising a housing (101), on which two first main shafts (201) and two second main shafts (204) are installed. The first main shaft (201) and the second main shaft (204) have different lengths. Power gears (401) are respectively installed on the first main shaft (201) and the second main shaft (204). The first main shaft (201) and the second main shaft (204) are arranged staggeredly. The power gears (401) on the four shafts are successively meshed with each other in pairs. The first main shaft (201) at the outermost side is externally connected with a power motor through a coupling. The power motor drives the power gears to drive the four shafts to transmit successively. And the two groups of first main shafts (201) rotate synchronously, and the two groups of second main shafts (204) rotate synchronously. Counterweight assemblies are respectively installed at the ends of the first main shaft (201) and the second main shaft (204). The counterweight assembly includes a fan-shaped fixed counterweight disk (302). The chords of multiple fixed counterweight disks (302) face the same direction. The outer circle formed by the rotation trajectory of the fixed counterweight disk (302) does not interfere with the adjacent first main shaft (201) and second main shaft (204).

2. A structurally compact multi-axis vibrator according to claim 1, characterized in that The power gear (401) is meshed with a pinion (402). The pinion (402) is fixedly connected with a transmission shaft (203). The transmission shaft (203) is power-connected with an oil pump (504) and a generator. Lubricating oil is added into the housing (101). A flow stabilizer plate (501) is arranged at the lower right corner of the housing (101). The flow stabilizer plate (501) is inclined with respect to the bottom surface of the housing (101). A filter (502) is arranged below the flow stabilizer plate (501). The filter (502) is connected to an oil circulation pipeline (503) distributed inside the housing (101). The oil circulation pipeline (503) is connected with an oil pump (504). A pressure oil filter and a nozzle (505) are also arranged at the top of the housing (101). The nozzle (505) sprays the lubricating oil onto the gears. A distribution pipeline is arranged at the top of the housing (101). The distribution pipeline transports the lubricating oil to the bearings.

3. A compact multi-axis vibrator according to claim 2, characterized in that, Oil baffle plates (202), skeleton oil seals and labyrinth seal structures are respectively installed on the first main shaft (201) and the second main shaft (204). The oil baffle plates (202) are used to block the coolant from flowing out of the housing (101).

4. A structurally compact multi-axis vibrator according to claim 2, wherein, One end face of the adjusting counterweight disk (301) is integrally formed with a connecting shaft (303). An accommodating cavity (307) is arranged inside the connecting shaft (303). A plurality of groups of counterweight cavities (311) are arranged in an array inside the disk body of the adjusting counterweight disk (301). The plurality of groups of counterweight cavities (311) are isolated from each other. A communication channel (309) is connected between the counterweight cavity (311) and the accommodating cavity (307). An installation seat (310) is fixedly installed on the inner wall of the accommodating cavity (307). A plurality of groups of blocking blocks (308) are arranged in an array on the installation seat (310). The blocking block (308) is connected with a driver (312) for driving the blocking block (308) to open and block the communication channel (309). A sealing bearing (304) is installed at the end of the connecting shaft (303). The sealing bearing (304) is connected with a communication shaft (305). The inside of the communication shaft (305) is hollow. The communication shaft (305) is connected with a cooling plate (102). A cooling pipe (103) is connected inside the cooling plate (102). The cooling pipe (103) is connected with a water pump for pumping water into the inside of the communication shaft (305). A rotary connector (306) is arranged inside the communication shaft (305). The rotary connector (306) is electrically rotatably connected with the installation seat (310) for supplying power to the driver (312). The rotary connector (306) is fixedly installed on the cooling plate (102).

5. A compact multi-axis vibrator according to claim 4, characterized in that A transmission cable is embedded in the cooling plate (102). The transmission cable electrically connects the generator and the rotary connector (306), and the generator supplies power to the driver (312).

6. A compact multi-axis vibrator according to claim 4, characterized in that, A plurality of groups of installation grooves are formed on the periphery of the installation seat (310), and the driver (312) is installed in the installation groove.

7. A compact multi-axis vibrator according to claim 6, characterized in that A conduit (601) is installed in the counterweight cavity (311). The conduit (601) extends outside the communication channel (309) until it is connected to the installation groove. A switching pipe is arranged between the installation groove and the communication channel (309). A suction port (602) and a perfusion port (603) are formed on the side wall of the switching pipe. The suction port (602) is lower than the perfusion port (603). The perfusion port (603) communicates with the accommodating cavity (307) for injecting water into the counterweight cavity (311). The suction port (602) is connected with a suction component for extracting the water injected into the counterweight cavity (311).

8. A compact multi-axis vibrator according to claim 7, characterized in that, The suction component includes a connecting rod (604) connected to a rotary connector (306). The connecting rod (604) is fixedly installed on the cooling plate (102). A suction channel (605) is formed inside the connecting rod (604). The suction channel (605) communicates with the cooling plate (102). A suction pipe (104) is connected inside the cooling plate (102). The suction pipe (104) is connected to a suction pump. A plurality of suction holes (606) are formed on the side wall of the suction channel (605). A sealing ring (607) is rotatably installed on the connecting rod (604). The sealing ring (607) is sleeved outside the plurality of suction holes (606). A flow cavity (608) is provided inside the sealing ring (607). The flow cavity (608) communicates with the plurality of suction holes (606). The flow cavity (608) is further connected to a suction tube (609). The suction tube (609) is connected to the suction port (602).

9. The compact multi-axis vibrator according to claim 8, wherein A water-cooling pipe is embedded inside the housing (101). The water-cooling pipe communicates with the suction pipe (104) and the cooling pipe (103) in the cooling plate (102).

10. A structurally compact multi-axis vibrator according to claim 4, characterized in that, The plurality of counterweight cavities (311) are symmetrically arranged with respect to the vertical lines drawn downward from the axes of the first main shaft (201) or the second main shaft (204) connected thereto as the axes of symmetry.

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