A large-tonnage vibration exciter

Abstract

The invention discloses a large-tonnage vibrator, comprising a housing, a rotating shaft, an eccentric gear, a driving gear and a lubricating oil circulation system, wherein at least one set of bearing seats is arranged on the housing, and the two ends of the rotating shaft are arranged on the bearing seats through bearings respectively, and the eccentric gear and the driving gear are connected to the rotating shaft respectively, and the eccentric gear and the driving gear are meshed; the eccentric gear is a split eccentric wheel, and the lubricating oil circulation system comprises an oil spray hole, an oil return hole, an oil suction pipe, an oil outlet pipe, an oil baffle plate and a gear pump arranged on the housing, and the gear pump is used to provide power for the lubricating oil circulation system, and the two ends of the oil suction pipe are respectively connected with the oil return hole and the gear pump, and the two ends of the oil outlet pipe are respectively connected with the oil spray hole and the gear pump, and the oil spray hole corresponds to the bearing one by one, and the oil baffle plate is arranged below the eccentric gear and the driving gear, and an oil storage space is formed between the oil baffle plate and the bottom plate of the housing, and the bottom plate is provided with an oil return hole. The invention has the technical effects of reducing manufacturing cost, facilitating maintenance and replacement, and improving service life.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical manufacturing, and in particular, relates to a large-tonnage vibration exciter. Background Art

[0002] For the vibrator, its main structure includes a motor (electric motor driven or hydraulically driven) that provides power, a housing, a driving wheel, an eccentric wheel, an active rotating shaft and a driven rotating shaft. For the eccentric body rotary vibrator, the eccentric wheel is driven to rotate by the driving wheel. Generally, pairs of eccentric wheels are used. When the eccentric wheels reverse each other, the lateral centrifugal forces generated offset each other, and the same centrifugal force is generated vertically, thereby superimposing a larger impact force, and as the eccentric wheel rotates, it generates up and down vibrations. The eccentric wheel structure includes gears, an eccentric body and a rotating shaft. In the prior art, the gears and the eccentric body are integrally cast, and the gears and the rotating shaft are connected by a key.

[0003] Therefore, the vibrator in the prior art has the following technical problems: First, the gear and the eccentric body are integrally forged, which is difficult to manufacture and process. Once the gear is worn, it needs to be replaced as a whole, and the replacement cost is high. Secondly, the gear is connected to the rotating shaft with a key, which increases the manufacturing cost on the one hand, and on the other hand, when the eccentric wheel is at a higher speed, it is easy to cause wear to the flat key, and the service life is limited; finally, due to the large centrifugal force of the large-tonnage vibrator (generally 4, 6 or 8 groups of eccentric gears are used), the rotation speed of the eccentric gear is fast, the box temperature rises too high, and high-temperature fatigue failure is easy to occur, which greatly shortens the service life of the vibrator.

[0004] In summary, there is an urgent need to provide a large-tonnage vibration exciter to solve the technical problems existing in the prior art, such as the high difficulty in processing the eccentric wheel, the high replacement cost, and the limited service life due to excessive temperature rise of the box, so as to achieve the technical effect of reducing the processing difficulty, reducing the manufacturing cost, improving the versatility of the layout, facilitating maintenance and replacement, and increasing the service life. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a large-tonnage vibration exciter to solve the technical problems existing in the prior art such as the high difficulty in processing the eccentric wheel, the high replacement cost, and the limited service life caused by excessive temperature rise of the box, so as to achieve the technical effect of reducing the processing difficulty, reducing the manufacturing cost, improving the versatility of the layout, facilitating maintenance and replacement, and increasing the service life.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A large-tonnage vibrator, comprising a housing, a rotating shaft, an eccentric gear, a driving gear and a lubricating oil circulation system, wherein the housing is provided with at least one set of bearing seats, the two ends of the rotating shaft are respectively provided on the bearing seats through bearings, the eccentric gear and the driving gear are respectively connected to the rotating shaft, and the eccentric gear and the driving gear are meshed with each other; the eccentric gear is a split eccentric wheel, the lubricating oil circulation system comprises an oil spray hole, an oil return hole, an oil suction pipe, an oil outlet pipe, an oil baffle plate and a gear pump provided on the housing, the gear pump is used to provide power for the lubricating oil circulation system, the two ends of the oil suction pipe are respectively connected to the oil return hole, and the oil return hole is connected to the oil return hole. The hole is connected with the gear pump, the two ends of the oil outlet pipe are respectively connected with the oil injection hole and the gear pump, the position of the oil injection hole corresponds to the position of the bearing one by one, the oil baffle plate is arranged below the eccentric gear and the driving gear, an oil storage space is formed between the oil baffle plate and the bottom plate of the box body, and the oil return hole is arranged on the bottom plate of the box body; the lubricating oil in the oil storage space passes through the oil return hole, the oil suction pipe and the gear pump in turn into the oil outlet pipe, then passes through the oil injection hole into the lubricating oil channel of the bearing, and then returns to the oil storage space through the oil baffle plate to form a complete lubricating oil circulation system.

[0008] The large-tonnage vibrator in this scheme is provided with a lubricating oil circulation system. The position of the oil injection hole corresponds to the position of the bearing one by one. The lubricating oil enters the lubricating oil channel of the bearing from the oil injection hole to provide lubrication for the bearing, thereby lubricating the high-speed rotating bearing and taking away the heat of the heavy-loaded bearing; at the same time, when the eccentric gear is rotating, the tooth edge can enter the groove-shaped notch, and the tooth edge can be soaked in the lubricating oil, thereby lubricating the friction between the eccentric gears, taking away the friction heat, and improving the service life of the eccentric gear; by arranging an oil baffle plate at the bottom of the box, an oil storage space is formed, the position and height of the lubricating oil are guaranteed to be stable, and the amount of oil for gear lubrication is ensured; and the oil baffle plate can prevent the lubricating oil from splashing around in the box, thereby ensuring the circulating oil amount of the gear lubricating oil.

[0009] Based on the above solution, in another improved solution, at least one groove-shaped notch is provided on the oil baffle plate, and the lowest point of the eccentric gear is placed in the groove-shaped notch.

[0010] On the basis of the above scheme, in another improved scheme, a crest structure and a trough structure are provided on the oil baffle plate, and the bottom surface of the trough structure is flush with the liquid level of the lubricating oil in the oil storage space; the groove-shaped notch spans the trough structure, and the extension direction of the groove-shaped notch and the trough structure are perpendicular to each other.

[0011] Based on the above scheme, in another improved scheme, the oil baffle plate includes at least two V-shaped single plates spliced ​​together, a through notch is opened at the edge of the V-shaped single plate, and the through notches of the two V-shaped single plates are aligned to form the groove-shaped notch.

[0012] On the basis of the above solution, in another improved solution, the lubricating oil circulation system further includes an oil circuit radiator arranged on the oil suction pipe, and the oil circuit radiator is used to dissipate the heat of the lubricating oil in the oil suction pipe.

[0013] Based on the above solution, in another improved solution, it also includes a first hydraulic motor, and the first hydraulic motor is connected to the gear pump through a coupling key.

[0014] On the basis of the above scheme, in another improved scheme, the driving gear includes a first driving gear and a second driving gear, which are respectively arranged at the two ends of the box body, and the eccentric gear is meshed with the first driving gear and the second driving gear at the same time. The first hydraulic motor is used to drive the first driving gear to rotate, and the second hydraulic motor is used to drive the second driving gear to rotate.

[0015] Based on the above solution, in another improved solution, the oil return holes are arranged on the bottom plates at both ends of the box body.

[0016] On the basis of the above scheme, in another improved scheme, the split eccentric wheel includes a gear and an eccentric body arranged on the rotating shaft, the gear and the eccentric body are axially connected and fixed by bolts or bayonet pins, a connecting hole is provided at the center of the gear, the eccentric body includes an eccentric part and a connecting part, the connecting part is provided with a positioning hole, the rotating shaft passes through the connecting hole and the positioning hole, and there is an interference fit between the gear and the rotating shaft, and there is an interference fit between the eccentric body and the rotating shaft. In this scheme, the gear and the eccentric body are designed to be split, and the two are respectively interference fit with the rotating shaft, which reduces the processing difficulty of the eccentric wheel, saves costs, and improves the versatility of the layout; and when the gear is worn, only the gear can be replaced, which is convenient for maintenance and replacement, and reduces maintenance costs.

[0017] On the basis of the above scheme, in another improved scheme, the eccentric body and the gear are connected and fixed by a positioning pin, and the two ends of the positioning pin are respectively interference fit with the gear and the eccentric body. In this scheme, positioning holes are provided on the opposite surfaces of the eccentric body and the gear, wherein the two ends of the positioning pin are respectively inserted into the positioning holes of the gear and the eccentric body, and are interference fit. This arrangement eliminates the processing step of setting a key on the rotating shaft, reduces the processing cost, and eliminates the key matching installation step; and ensures the high quality uniformity of the eccentric gear, improves the consistency of the vibration direction, and improves the reliability of mechanical operation.

[0018] Based on the above solution, in another improved solution, the outer peripheral edge of the eccentric body does not exceed the arc formed by the tooth tip of the gear. In this way, when the eccentric wheel is in use, the driving wheel drives the gear to rotate, and the eccentric body will not interfere with the movement of the gear.

[0019] Based on the above solution, in another improved solution, the gear is provided with a plurality of symmetrically distributed through holes. This arrangement can reduce the weight of the gear itself, improve the mass ratio of the eccentric body to the gear, facilitate the rapid driving and driving of the eccentric wheel, increase the access speed of the eccentric wheel, and improve the clutch efficiency and impact force.

[0020] Based on the above solution, in another improved solution, the number of the eccentric gears is at least two, and the eccentric gears are meshed with each other.

[0021] Based on the above solution, in another improved solution, the two bearings are respectively mounted on both ends of the rotating shaft outside the gear and the eccentric body; the bearings drive the rotating shaft to rotate, thereby realizing the rotation of the eccentric wheel structure.

[0022] Based on the above solution, in another improved solution, the mass of the eccentric body is greater than the mass of the gear. This arrangement can ensure that the eccentric wheel can generate a larger centrifugal force when working, thereby generating a larger impact force to achieve up and down vibration.

[0023] On the basis of the above solution, in another improved solution, the eccentric body is in the shape of a meniscus. This arrangement can increase the area of ​​the eccentric body as much as possible, so that the eccentric wheel generates a larger centrifugal force during operation.

[0024] The beneficial technical effects achieved by the technical solution of the present invention are:

[0025] 1. The large-tonnage vibrator of the present invention provides a lubricating oil circulation system to provide sufficient lubricating oil and effectively take away the heat of the eccentric gear and the bearing, thereby solving the heat dissipation problem and lubricating oil loss problem of the vibrator and prolonging the service life of the vibrator.

[0026] 2. The large-tonnage vibrator of the present invention adopts a split eccentric wheel. The gear and the eccentric body are produced separately and then connected with the rotating shaft by interference fit. This reduces the difficulty of processing the eccentric wheel, saves costs, improves the versatility of the layout, and facilitates the maintenance and replacement of the gear. The eccentric body and the gear are both interference fit with the rotating shaft. On the one hand, the processing step of setting a key on the rotating shaft is omitted, the processing cost is reduced, and the key matching and installation step is omitted. On the other hand, the high quality uniformity of the eccentric gear is ensured, the consistency of the vibration direction is improved, the reliability of the mechanical operation is improved, the impact damage to the key after long-term use is avoided, and the overall service life of the eccentric wheel is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0028] Figure 1 It is a schematic diagram of the internal structure of the vibration exciter of the present invention (the side panel of the hidden box);

[0029] Figure 2 for Figure 1 A top view of

[0030] Figure 3 for Figure 1 The schematic diagram of the structure of the three eccentric gears is hidden in the middle, showing the structure of the oil baffle;

[0031] Figure 4 It is a structural schematic diagram of the split eccentric wheel in the present invention;

[0032] Figure 5 for Figure 5 Axial cross-sectional view.

[0033] Reference numerals:

[0034] 1- eccentric gear 2- housing 3- first drive gear

[0035] 4-Oil baffle 5-Gear pump 6-Oil injection hole

[0036] 7-First hydraulic motor 8-Oil return hole 9-Bearing seat

[0037] 10-bearing 11-second hydraulic motor 12-groove notch

[0038] 13-bottom plate 14-second driving gear 15-rotating shaft

[0039] 101-bolt 102-eccentric body 103-gear

[0040] 104-Location pin DETAILED DESCRIPTION

[0041] The present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention. In addition, those skilled in the art can make corresponding combinations of the features in the embodiments and in different embodiments in this document based on the description of this document.

[0042] See attached Figure 1 To Attachment Figure 5 Schematically, a specific embodiment of the present invention discloses a large-tonnage vibrator, including a housing 2, a rotating shaft 15, an eccentric gear 1, a driving gear and a lubricating oil circulation system. The housing 2 is provided with at least one set of bearing seats 9, and both ends of the rotating shaft 15 are respectively provided on the bearing seats 9 through bearings 10. The eccentric gear 1 and the driving gear are respectively connected to the rotating shaft 15, and the eccentric gear 1 and the driving gear are meshed with each other; the eccentric gear 1 is a split eccentric wheel, and the lubricating oil circulation system includes an oil injection hole 6, an oil return hole 8, an oil suction pipe, an oil outlet pipe, an oil baffle plate 4 and a gear pump 5 provided on the housing 2. The gear pump 5 is used to supply the lubricating oil circulation system with oil. To provide power, the two ends of the oil suction pipe are connected to the oil return hole 8 and the gear pump 5 respectively, and the two ends of the oil outlet pipe are connected to the oil injection hole 6 and the gear pump 5 respectively. The position of the oil injection hole 6 corresponds to the position of the bearing 10. The oil baffle plate 4 is arranged below the eccentric gear 1 and the driving gear. An oil storage space is formed between the oil baffle plate 4 and the bottom plate of the housing 2. The bottom plate of the housing 2 is provided with an oil return hole 8. The lubricating oil in the oil storage space passes through the oil return hole 8, the oil suction pipe and the gear pump 5 in turn into the oil outlet pipe, and then passes through the oil injection hole 6 to enter the lubricating oil channel of the bearing 10, and then returns to the oil storage space through the oil baffle plate 4 to form a complete lubricating oil circulation system. The large-tonnage vibrator in this embodiment reduces the splashing and volatilization of the lubricating oil in the housing 2 by setting a lubricating oil circulation system, can provide sufficient lubricating oil for the working process of the eccentric gear 1, and effectively take away the heat of the eccentric gear 1 and the bearing 10, solves the heat dissipation problem and lubricating oil loss problem of the vibrator, and improves the service life of the vibrator.

[0043] Reference Figure 1 , Attachment Figure 2 and attached Figure 3As shown in the figure, in the lubricating oil circulation system of the vibrator in this embodiment, the oil baffle plate 4 is arranged below the eccentric gear 1 and the driving gear, a groove-shaped notch is correspondingly arranged directly below the eccentric gear 1, and the lowest point of the eccentric gear 1 is placed in the groove-shaped notch. In the lubricating oil circulation system of the vibrator of the present embodiment, the position of the oil injection hole 6 corresponds to the position of the bearing 10 one by one, and the lubricating oil enters the lubricating oil channel of the bearing 10 from the oil injection hole 6 to provide lubrication for the bearing 10, thereby lubricating the high-speed rotating bearing 10 and taking away the heat of the heavy-loaded bearing 10; at the same time, when the eccentric gear 1 rotates, the edge of the tooth can enter the groove-shaped notch, and the edge of the tooth can be soaked in the lubricating oil, thereby lubricating the friction between the eccentric gears 1, taking away the friction heat, and improving the service life of the eccentric gear 1; by arranging an oil baffle plate 4 at the bottom of the box, an oil storage space is formed, the position and height of the lubricating oil are guaranteed to be stable, and the amount of oil for lubricating the gear 103 is ensured; and the oil baffle plate 4 can prevent the lubricating oil from splashing everywhere in the box body 2, thereby ensuring the circulating oil amount of the lubricating oil of the gear 103; by arranging an oil circuit radiator, it is ensured that the lubricating oil system can dissipate heat in time.

[0044] On the basis of the above embodiment, in another improved embodiment, the oil baffle plate 4 is provided with a wave crest structure and a wave trough structure, the bottom side surface of the wave trough structure is flush with the liquid surface of the lubricating oil in the oil storage space; the groove-shaped notch spans the wave trough structure, and the extending direction of the groove-shaped notch and the wave trough structure is perpendicular to each other. The oil baffle plate 4 is provided with an angle with a bevel in order to collect the splashing lubricating oil to the bottom of the box body 2 and prevent the oil from shaking under the vibration impact. The lubricating oil is collected on the surface of the oil baffle plate 4, and then enters the oil storage space through the oil baffle plate 4, reducing the splashing and loss of the lubricating oil and ensuring the amount of lubricating oil in the working process of the exciter. Moreover, the bottom side surface of the wave trough structure is flush with the oil liquid surface of the oil storage space, so that when the eccentric gear 1 rotates, the lowest point of the eccentric gear 1 is placed in the groove-shaped notch and soaked in the lubricating oil, thereby realizing the lubrication of the eccentric gear 1, reducing the friction between two adjacent eccentric gears 1, and taking away part of the friction heat.

[0045] On the basis of the above embodiment, in another improved embodiment, the split eccentric wheel includes a gear 103 and an eccentric body 102 arranged on the rotating shaft 15, the gear 103 and the eccentric body 102 are axially connected and fixed by bolts 10 or bayonet pins, a connecting hole is provided at the center of the gear 103, the eccentric body 102 includes an eccentric part and a connecting part, a positioning hole is provided at the connecting part, the rotating shaft 15 passes through the connecting hole and the positioning hole, and there is an interference fit between the gear 103 and the rotating shaft 15, and there is an interference fit between the eccentric body 102 and the rotating shaft 15. In this embodiment, the gear 103 and the eccentric body 102 are designed to be split, and the two are respectively interference fit with the rotating shaft 15, which reduces the processing difficulty of the eccentric wheel, saves costs, and improves the versatility of the layout; and when the gear 103 is worn, only the gear 103 can be replaced, which is convenient for maintenance and replacement, and reduces maintenance costs.

[0046] See attached Figure 1 and attached Figure 3 As shown in the figure, in this embodiment, the lubricating oil in the oil storage space enters the oil outlet pipe through the oil return hole 8, the oil suction pipe and the gear pump 5 in sequence, then enters the lubricating oil channel of the bearing 10 through the oil injection hole 6, and then returns to the oil storage space through the oil baffle 4 to form a complete lubricating oil circulation system.

[0047] In the lubricating oil circulation system of the vibrator of the present embodiment, the position of the oil injection hole 6 corresponds to the position of the bearing 10 one by one, and the lubricating oil enters the lubricating oil channel of the bearing 10 from the oil injection hole 6 to provide lubrication for the bearing 10, thereby lubricating the high-speed rotating bearing 10 and taking away the heat of the heavy-loaded bearing 10; at the same time, when the eccentric gear 1 rotates, the edge of the tooth can enter the groove-shaped notch, and the edge of the tooth can be soaked in the lubricating oil, thereby lubricating the friction between the eccentric gears 1, taking away the friction heat, and improving the service life of the eccentric gear 1; by arranging an oil baffle plate 4 at the bottom of the box, an oil storage space is formed, the position and height of the lubricating oil are guaranteed to be stable, and the amount of oil for lubricating the gear 103 is ensured; and the oil baffle plate 4 can prevent the lubricating oil from splashing everywhere in the box body 2, thereby ensuring the circulating oil amount of the lubricating oil of the gear 103; by arranging an oil circuit radiator, it is ensured that the lubricating oil system can dissipate heat in time.

[0048] The vibrator in this embodiment, by providing a lubricating oil circulation system, reduces the splashing and volatilization of the lubricating oil inside the box 2, can provide sufficient lubricating oil for the working process of the eccentric gear 1, and effectively take away the heat of the eccentric gear 1 and the bearing 10, thereby solving the heat dissipation problem and lubricating oil loss problem of the vibrator and improving the service life of the vibrator.

[0049] See attached Figure 3 As shown in the figure, in order to ensure that the rotation of the eccentric gear 1 is not affected, the width of the groove notch in this embodiment is wider than the width of the eccentric gear 1, and the length of the groove notch meets the rotation requirements of the eccentric gear 1. Those skilled in the art are aware that the length of the groove notch is related to the height of the oil baffle 4. If the lowest point of the eccentric gear 1 extends deeper into the groove notch of the oil baffle 4, the length of the groove notch should be set longer; otherwise, it can be set shorter. Since the relationship between the eccentric gear 1 and the groove notch can be set within a certain range, it is only necessary to meet the normal rotation of the eccentric gear 1, so there is no need to limit the specific length of the groove notch in this application document.

[0050] See attached Figure 2 As shown in FIG. 1 , based on the above embodiment, in another improved embodiment, a first hydraulic motor 7 is further included, and the first hydraulic motor 7 is connected to the gear pump 5 via a coupling key. In this way, when the first hydraulic motor 7 is started, the gear pump 5 can be driven to rotate, thereby driving the lubricating oil circulation system to work.

[0051] See attached Figure 1 and attached Figure 3 As shown in the figure, based on the above embodiment, in another improved embodiment, the driving gear includes a first driving gear 3 and a second driving gear 14, which are respectively arranged at both ends of the box body 2, and the eccentric gear 1 is meshed with the first driving gear 3 and the second driving gear 14 at the same time. The first hydraulic motor 7 is used to drive the first driving gear 3 to rotate, and the second hydraulic motor is used to drive the second driving gear 14 to rotate.

[0052] In another improved embodiment, the number of the eccentric gears 1 is at least two, and the eccentric gears 1 mesh with each other. Figure 1 and attached Figure 2 As shown in the diagram, in the improved embodiment, the number of eccentric gears 1 is four, the four eccentric gears 1 are meshed with each other, and the eccentric gears 1 at both ends are respectively meshed with the two driving gears at both ends of the housing 2, and a groove-shaped notch of the oil baffle plate 4 is provided directly below the eccentric gear 1. In the improved example of the present embodiment, the oil baffle plate 4 is composed of at least two V-shaped single plates spliced ​​together, and the seam between the two V-shaped single plates forms a trough structure of the oil baffle plate 4, and a through notch is provided at the edge of the V-shaped single plate, and the through notches of the two V-shaped single plates are aligned to form a groove-shaped notch. The eccentric gear 1 is directly opposite to the seam and groove-shaped notch of the two V-shaped single plates below. In order to correspond to the four eccentric gears 1, five V-shaped single plates are spliced ​​together, and the seams between adjacent V-shaped single plates can allow lubricating oil to leak into the oil storage space.

[0053] See attached Figure 1 and attached Figure 3 As shown in FIG. 1 , based on the above embodiment, in another improved embodiment, the oil return hole 8 is arranged on the bottom plate at both ends of the box body 2.

[0054] On the basis of the above embodiment, in another improved embodiment, an oil circuit radiator is further included on the oil suction pipe, and the oil circuit radiator is used to dissipate the heat of the lubricating oil in the oil suction pipe. In this way, the heat of the lubricating oil coming out of the oil storage space can be taken away, and the heat of the lubricating oil can be reduced, so that the temperature of the lubricating oil is reduced before entering the next cycle, so that the lubricating oil can continue to take away the heat generated by the eccentric gear 1 and the bearing 10 when they rotate.

[0055] On the basis of the above embodiment, in another improved embodiment, it further includes a filter arranged on the oil suction pipe, and the filter is used to filter impurities in the lubricating oil in the oil suction pipe.

[0056] On the basis of the above embodiment, in another improved embodiment, it further includes a pressure gauge for measuring the lubricating oil pressure, and the pressure gauge is arranged on the oil suction pipe or the oil outlet pipe.

[0057] See attached Figure 4 and attached Figure 5 As shown in the diagram, the split eccentric wheel in this embodiment includes a gear 103, an eccentric body 102 and a rotating shaft 15. The gear 103 and the eccentric body 102 are axially connected and fixed by bolts 10. A connecting hole is provided at the center of the gear 103. The eccentric body 102 includes an eccentric portion and a connecting portion. The connecting portion is provided with a positioning hole. The rotating shaft 15 passes through the connecting hole and the positioning hole. There is an interference fit between the gear 103 and the rotating shaft 15, and there is an interference fit between the eccentric body 102 and the rotating shaft 15. In this embodiment, the gear 103 and the eccentric body 102 are designed to be split. The gear 103 and the eccentric body 102 are axially fixed by bolts 10. The two are respectively interference fit with the rotating shaft 15, which reduces the processing difficulty of the eccentric wheel, saves costs, and improves the versatility of the layout; and when the gear 103 is worn, only the gear 103 can be replaced separately, which is convenient for maintenance and replacement, and reduces maintenance costs. In other embodiments, the gear 103 and the eccentric body 102 are axially connected and fixed by a bayonet pin.

[0058] See attached Figure 5 As shown in the figure, on the basis of the above embodiment, in another improved embodiment, the eccentric body 102 and the gear 103 are connected and fixed by the positioning pin 104, and the two ends of the positioning pin 104 are respectively interference fit with the gear 103 and the eccentric body 102. In this embodiment, positioning holes are provided on the opposite surfaces of the eccentric body 102 and the gear 103, wherein the two ends of the positioning pin 104 are respectively inserted into the positioning holes of the gear 103 and the eccentric body 102 and are interference fit. The positioning pin 104 is used to realize the installation and positioning of the gear 103 and the eccentric body 102, and the positioning pin 104 bears the structural shear force, and also ensures that the gear 103 is synchronized with the eccentric body 102; such a setting saves the processing step of setting a key on the rotating shaft 15, reduces the processing cost, and saves the key matching installation step; and ensures the high quality uniformity of the eccentric gear 1, improves the consistency of the vibration direction, and improves the reliability of the mechanical operation.

[0059] See attached Figure 4 and attached Figure 5 As shown in FIG. 1 , based on the above embodiment, in another improved embodiment, two rotating shafts 15 bearings 10 are further included, and the two rotating shafts 15 bearings 10 are respectively sleeved at both ends of the rotating shaft 15 and are respectively located outside the gear 103 and the eccentric body 102. By setting the connection between the rotating shaft 15 bearings 10 and the rotating shaft 15, the rotation of the rotating shaft 15 is realized, thereby realizing the rotation of the eccentric wheel structure.

[0060] Referring to the schematic diagram of Figure 4, based on the above embodiment, in another improved embodiment, a plurality of symmetrically distributed through holes are provided on the gear 103. This arrangement can reduce the weight of the gear 103 itself, improve the mass ratio of the eccentric body 102 to the gear 103, facilitate the rapid driving and rotation of the eccentric wheel, improve the access speed of the eccentric wheel, and improve the clutch efficiency and impact force.

[0061] See attached Figure 4 and attached Figure 5 In another improved embodiment, based on the above embodiment, the outer peripheral edge of the eccentric body 102 does not exceed the arc formed by the rotation trajectory of the tooth tip of the gear 103. In this way, when the eccentric wheel is in use, the driving wheel drives the gear 103 to rotate, and the eccentric body 102 will not interfere with the movement of the gear 103.

[0062] See attached Figure 5 In another improved embodiment, based on the above embodiment, the mass of the eccentric body 102 is greater than the mass of the gear 103. This arrangement can ensure that the eccentric wheel can generate a larger centrifugal force when working, thereby generating a larger impact force to achieve up and down vibration.

[0063] See attached Figure 4 In another improved embodiment, based on the above embodiment, the eccentric body 102 is in the shape of a meniscus. This arrangement can increase the area and weight of the eccentric body 102 as much as possible, so that the eccentric wheel generates a larger centrifugal force during operation.

[0064] The split eccentric wheel in this embodiment adopts a split design, in which the gear 103 and the eccentric body 102 are produced separately and then connected with the rotating shaft 15 by interference fit. This reduces the difficulty of processing the eccentric wheel, saves costs, improves the versatility of the layout, and facilitates the maintenance and replacement of the gear 103. The eccentric body 102 and the gear 103 are both interference fit with the rotating shaft 15. On the one hand, the processing step of setting a key on the rotating shaft 15 is omitted, the processing cost is reduced, and the key matching and installation step is omitted. On the other hand, the high quality uniformity of the eccentric gear 1 is ensured, the consistency of the vibration direction is improved, the reliability of the mechanical operation is improved, the impact damage to the key after long-term use is avoided, and the overall service life of the eccentric wheel is increased.

[0065] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A large-tonnage vibration exciter, characterized in that: The invention comprises a housing, a rotating shaft, an eccentric gear, a driving gear and a lubricating oil circulation system, wherein at least one set of bearing seats is arranged on the housing, and the two ends of the rotating shaft are arranged on the bearing seats through bearings respectively, and the eccentric gear and the driving gear are respectively connected to the rotating shaft, and the eccentric gear and the driving gear are meshed with each other; the eccentric gear is a split eccentric wheel, and the lubricating oil circulation system comprises an oil spray hole, an oil return hole, an oil suction pipe, an oil outlet pipe, an oil baffle plate and a gear pump arranged on the housing, and the gear pump is used to provide power for the lubricating oil circulation system, and the two ends of the oil suction pipe are respectively connected to the oil return hole and the gear pump. The gear pump is connected, and both ends of the oil outlet pipe are connected with the oil injection hole and the gear pump respectively. The position of the oil injection hole corresponds to the position of the bearing one by one. The oil baffle plate is arranged below the eccentric gear and the driving gear. An oil storage space is formed between the oil baffle plate and the bottom plate of the box body, and the oil return hole is arranged on the bottom plate of the box body. The lubricating oil in the oil storage space passes through the oil return hole, the oil suction pipe and the gear pump in sequence into the oil outlet pipe, and then passes through the oil injection hole into the lubricating oil channel of the bearing, and then returns to the oil storage space through the oil baffle plate to form a complete lubricating oil circulation system.

2. The large-tonnage vibration exciter according to claim 1, characterized in that: The oil baffle plate is provided with at least one groove-shaped notch, and the lowest point of the eccentric gear is placed in the groove-shaped notch.

3. The large-tonnage vibration exciter according to claim 2, characterized in that: The oil baffle plate is provided with a crest structure and a trough structure, the bottom surface of the trough structure is flush with the liquid level of the lubricating oil in the oil storage space; the groove-shaped notch spans the trough structure, and the extension directions of the groove-shaped notch and the trough structure are perpendicular to each other.

4. The large-tonnage vibration exciter according to claim 3, characterized in that: The oil baffle plate is composed of at least two V-shaped single plates spliced ​​together, and a through notch is provided at the edge of the V-shaped single plate. The through notches of the two V-shaped single plates are aligned to form the groove-shaped notch.

5. The large-tonnage vibration exciter according to claim 1, characterized in that: The lubricating oil circulation system further comprises an oil circuit radiator arranged on the oil suction pipe, and the oil circuit radiator is used for dissipating the heat of the lubricating oil in the oil suction pipe.

6. The large-tonnage vibration exciter according to any one of claims 1 to 5, characterized in that: The split eccentric wheel includes a gear and an eccentric body arranged on the rotating shaft, the gear and the eccentric body are axially connected and fixed by bolts or pins, a connecting hole is opened at the center of the gear, the eccentric body includes an eccentric part and a connecting part, the connecting part is opened with a positioning hole, the rotating shaft passes through the connecting hole and the positioning hole, and there is an interference fit between the gear and the rotating shaft, and there is an interference fit between the eccentric body and the rotating shaft.

7. The large-tonnage vibration exciter according to claim 6, characterized in that: The eccentric body and the gear are connected and fixed by a positioning pin, and two ends of the positioning pin are respectively interference-fitted with the gear and the eccentric body.

8. The large-tonnage vibration exciter according to claim 6, characterized in that: The outer peripheral edge of the eccentric body does not exceed the arc line formed by the tooth tips of the gear.

9. The large-tonnage vibration exciter according to claim 6, characterized in that: The gear is provided with a plurality of symmetrically distributed through holes.

10. The large-tonnage vibration exciter according to claim 6, characterized in that: The number of the eccentric gears is at least two, and the eccentric gears are meshed with each other.

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