A synchronous double eccentric shaft excitation device and thin oil lubrication method

Abstract

The present invention relates to the technical field of vibration excitation devices, and in particular to a synchronous double-eccentric shaft vibration excitation device and a thin oil lubrication method. The device includes a base, an eccentric shaft, a first oil tank, a second oil tank, a synchronous gear, and an oil-slinging plate. The first oil tank and the second oil tank are respectively arranged at both ends of the eccentric shaft. The first oil tank is provided with a synchronous gear, and the synchronous gear causes the lubricating oil in the first oil tank to splash to lubricate the bearing; the second oil tank is provided with an oil-slinging plate, and the oil-slinging plate causes the lubricating oil in the second oil tank to splash to lubricate the bearing. The eccentric part of the eccentric shaft is outside the oil tank, and the eccentric part rotates without hindrance, and the working loss is low; compared with a single large oil tank, the use of two small oil tanks can achieve a small amount of lubricating oil to ensure sufficient lubrication effect, and can achieve a better sealing design to avoid leakage. The synchronous gear and the oil-slinging plate, in conjunction with the oil circuit design, can realize oil circuit circulation in the oil tank without external power and sufficient lubrication.

Description

Technical Field

[0001] The invention relates to the technical field of vibration excitation devices, and in particular to a synchronous double-eccentric shaft vibration excitation device and a thin oil lubrication method. Background Art

[0002] With the rapid development of the current industrial level, feeders are widely used in external transportation in mining, metallurgy, chemical industry and other industries. Existing feeders generally use vibrators to vibrate materials to make them move. The vibrators need to rotate at high speed when working, so the bearings need to be well lubricated.

[0003] The Chinese patent with the authorization announcement number CN 201567049U discloses an external transmission dual-axis vibrator, including a dual-axis vibrator, characterized in that: two eccentric shafts are installed in parallel in a housing, and a mutually meshing transmission gear is installed at the same end of the two eccentric shafts, and thin oil in contact with the lower part of the gear is installed in the housing, and an oil hole connecting each bearing and gear is provided on the housing. The existing dual eccentric shaft excitation device uses thin oil for lubrication, which significantly improves the lubrication effect compared with the paste lubricating oil, but because a single large oil tank is used, a large amount of lubricating oil is required, and a large amount of lubricating oil has higher requirements for the sealing effect, and the problem of lubricating oil leakage is prone to occur; the eccentric part of the eccentric shaft is in the oil tank, and when the eccentric shaft rotates, the lubricating oil forms resistance to the eccentric part, thereby increasing the energy consumption loss of the equipment operation. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a synchronous double-eccentric shaft vibration excitation device with good lubrication effect and low energy loss.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present invention is as follows: a synchronous double-eccentric shaft excitation device, comprising a base and an eccentric shaft, the middle section of the eccentric shaft is the eccentric part, and the two end positions of the eccentric shaft are arranged on the base through bearings, characterized in that: it also includes a first oil tank, a second oil tank, a synchronous gear, and an oil-slinging plate, the eccentric shaft comprises a driving shaft and a driven shaft, the first oil tank and the second oil tank are respectively arranged at the two ends of the eccentric shaft, and the ends of the eccentric shaft and the bearings of the corresponding ends are sealed inside, lubricating oil is respectively provided in the first oil tank and the second oil tank, and the driving shaft and the driven shaft located in the first oil tank are respectively sleeved with synchronous gears that mesh with each other, and the synchronous gears rotate to make the lubricating oil in the first oil tank splash to lubricate the bearings located in the first oil tank; the driving shaft and / or the driven shaft located in the second oil tank are provided with an oil-slinging plate that rotates together, and the oil-slinging plate rotates to make the lubricating oil in the second oil tank splash to lubricate the bearings located in the second oil tank.

[0006] Furthermore, it also includes a bearing seat and a bearing pressure cover, the bearing seat is installed on the base and is sealed with the base, the bearing is installed in the bearing seat, the first oil tank includes a first cover body, the first cover body is covered on one side of the base and covers the bearing seat corresponding to the side, the first cover body and the base are sealed, the second oil tank includes a second cover body, the second cover body is covered on one side of the base and covers the bearing seat corresponding to the side, the second cover body and the base are sealed, the bearing seat forms an open end on one side facing the first cover body or the second cover body, and a bearing pressure cover is provided on the other side for sealing.

[0007] Furthermore, it also includes a sleeve, which is arranged outside the eccentric shaft and corresponds to the inner side of the bearing cover. The outer side surface of the sleeve is provided with a first oil groove which opens outward and is arranged around the axis. The bearing seat is provided with a first oil channel running through both sides, and the bearing cover is provided with a second oil channel. There are several first oil channels and several second oil channels, and each first oil channel is distributed at a different height position. One end of the second oil channel is connected to the first oil channel, and the other end is connected to the first oil groove. The corresponding first channel, second channel and first oil groove cooperate to form a circulating oil circuit in which the lubricating oil enters from the high-position first oil channel and is discharged from the low-position first oil channel.

[0008] Furthermore, an oil guide groove is provided on a side of the bearing cover facing the bearing seat, and the oil guide groove corresponds to a first oil passage and is connected to one side of the interior of the bearing seat, forming a lubricating oil passage in which the lubricating oil enters one side of the bearing seat from the first oil passage and is discharged from the other side after passing through the bearing.

[0009] Furthermore, a second oil groove with an inward opening and arranged around the axis is provided on the inner side surface of the bearing gland, and the first oil groove and the second oil groove are staggered to form a labyrinth seal structure.

[0010] Furthermore, a sealing ring is provided outside the shaft sleeve, and the sealing ring acts between the bearing cover and the shaft sleeve.

[0011] Furthermore, an inclined surface facing the bearing direction is provided at the open end of the bearing seat, and the inclined surface is used to guide the lubricating oil to gather in the direction of the bearing.

[0012] Furthermore, the first oil tank and the second oil tank are respectively provided with an independent refueling port, an oil level mirror and an oil drain port.

[0013] Furthermore, it also includes a closing cover, which is installed on the base and located between the first oil tank and the second oil tank, and the closing cover closes the eccentric part of the eccentric shaft inside.

[0014] A thin oil lubrication method for a synchronous double eccentric shaft excitation device, characterized in that: based on any one of the above-mentioned synchronous double eccentric shaft excitation devices,

[0015] The driving shaft rotates and drives the driven shaft to rotate together through the synchronous gear; in the first oil tank, the synchronous gear rotates and splashes the lubricating oil; in the second oil tank, the oil slinger rotates and splashes the lubricating oil;

[0016] The splashed lubricating oil enters from the first oil passage at a relatively higher horizontal position on the bearing seat, and reaches the first oil groove along the corresponding second oil passage, and then is sent out from the second oil passage below and discharged from the first oil passage at a relatively lower horizontal position on the bearing seat, forming a circulating oil circuit, which plays the role of lubrication, cooling and slag removal;

[0017] The splashed lubricating oil enters from the first oil passage, passes through the corresponding oil guide groove and enters the bearing seat. The lubricating oil passes through the bearing from one side and is discharged from the other side, forming a lubricating oil passage, which plays a role in lubrication and slag removal.

[0018] From the above description of the present invention, it can be seen that compared with the prior art, the present invention provides a synchronous double-eccentric shaft excitation device and a thin oil lubrication method, which lubricates the bearing positions at both ends of the eccentric shaft by setting two oil tanks respectively, so that the eccentric part of the eccentric shaft is outside the oil tank, the eccentric part rotates without hindrance, and the working loss is low; compared with a single large oil tank, the use of two small oil tanks can achieve a small amount of lubricating oil to ensure sufficient lubrication effect, and can achieve a better sealing design to avoid leakage; the rotation of the eccentric shaft drives the synchronous gear and the oil throwing plate to rotate, and combined with the oil circuit design, the oil circuit circulation in the oil tank can be realized without external power, thereby achieving sufficient lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a cross-sectional view of a synchronous double-eccentric shaft excitation device of the present invention.

[0020] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram.

[0021] Figure 3 For the present invention Figure 2 Partial cross-sectional views at different cross-sectional angles at the same position.

[0022] Figure 4 The figure is a schematic diagram of the external structure of a synchronous double-eccentric shaft excitation device of the present invention.

[0023] The symbols in the figure correspond to the following: 1. base, 11. closing cover, 2. eccentric shaft, 21. eccentric part, 22. bearing, 2a. driving shaft, 2b. driven shaft, 3. first oil tank, 31. first cover body, 4. second oil tank, 41. second cover body, 5. synchronous gear, 6. oil-slinging plate, 7. bearing seat, 71. first oil channel, 72. inclined surface, 8. bearing pressure cover, 81. second oil channel, 82. oil guide groove, 83. second oil groove, 9. bushing, 91. first oil groove, 92. sealing ring. DETAILED DESCRIPTION

[0024] The present invention is further described below through specific implementation modes.

[0025] Reference Figures 1 to 4 As shown, a synchronous double eccentric shaft excitation device includes a base 1, an eccentric shaft 2, a first oil tank 3, a second oil tank 4, a synchronous gear 5, an oil throwing plate 6, a bearing seat 7, a bearing cover 8, and a shaft sleeve 9.

[0026] The middle section of the eccentric shaft 2 is the eccentric portion 21, and the two end positions of the eccentric shaft 2 are arranged on the base 1 through bearings 22. The eccentric shaft 2 includes a driving shaft 2a and a driven shaft 2b. The first oil tank 3 and the second oil tank 4 are respectively arranged at the two ends of the eccentric shaft 2, and the ends of the eccentric shaft 2 and the bearings 22 of the corresponding ends are sealed inside. Lubricating oil is respectively provided in the first oil tank 3 and the second oil tank 4. The driving shaft 2a and the driven shaft 2b located in the first oil tank 3 are respectively sleeved with synchronous gears 5 that mesh with each other. The synchronous gear 5 rotates to make the lubricating oil in the first oil tank 3 splash to lubricate the bearing 22 located in the first oil tank 3; the driving shaft 2a and / or the driven shaft 2b located in the second oil tank 4 are provided with an oil-slinging plate 6 that rotates together. The oil-slinging plate 6 rotates to make the lubricating oil in the second oil tank 4 splash to lubricate the bearing 22 located in the second oil tank 4.

[0027] The bearing seat 7 is installed on the base 1 and is sealed with the base 1. The bearing 22 is installed in the bearing seat 7. The first oil tank 3 includes a first cover body 31. The first cover body 31 is covered on one side of the base 1 and covers the bearing seat 7 corresponding to the side. The first cover body 31 is sealed with the base 1. The second oil tank 4 includes a second cover body 41. The second cover body 41 is covered on one side of the base 1 and covers the bearing seat 7 corresponding to the side. The second cover body 41 is sealed with the base 1. The bearing seat 7 forms an open end on one side facing the first cover body 31 or the second cover body 32, and a bearing pressure cover 8 is provided on the other side for sealing. The sleeve 9 is arranged outside the eccentric shaft 2 and corresponds to the inner side of the bearing cover 8. The outer side of the sleeve 9 is provided with a first oil groove 91 with an opening facing outward and arranged around the axis. The bearing seat 7 is provided with a first oil passage 71 that runs through both sides. The bearing cover 8 is provided with a second oil passage 81. There are a plurality of first oil passages 71 and a plurality of second oil passages 81. Each first oil passage 71 is distributed at different heights. One end of the second oil passage 81 is connected to the first oil passage 71 and the other end is connected to the first oil groove 91. The corresponding first passage 71, the second passage 81 and the first oil groove 91 cooperate to form a circulating oil passage in which lubricating oil enters from the high-position first oil passage 71 and is discharged from the low-position first oil passage 81. The side of the bearing cover 8 facing the bearing seat 7 is provided with an oil guide groove 82. The oil guide groove 82 corresponds to a first oil passage 71 and is connected to one side of the inside of the bearing seat 7, forming a lubricating oil passage in which lubricating oil enters from the first oil passage 71 on one side of the bearing seat 7 and is discharged from the other side after passing through the bearing 22. The inner side of the bearing cover 8 is provided with a second oil groove 83 with an opening facing inward and arranged around the axis. The first oil groove 91 and the second oil groove 83 are staggered to form a labyrinth seal structure. A sealing ring 92 is also provided outside the shaft sleeve 9. The sealing ring 92 acts between the bearing cover 8 and the shaft sleeve 9. The open end of the bearing seat 7 is provided with an inclined surface 72 facing the direction of the bearing 22. The inclined surface 72 is used to guide the lubricating oil to gather in the direction of the bearing 22 to ensure that the bearing always has a good lubrication effect. The first oil tank 3 and the second oil tank 4 are respectively provided with an independently set refueling port, an oil level mirror, and an oil drain port.

[0028] A sealing cover 11 is provided on the base 1 . The sealing cover 11 is installed on the base 1 and is located between the first oil tank 3 and the second oil tank 4 . The sealing cover 11 seals the eccentric portion 21 of the eccentric shaft 2 inside.

[0029] The working principle of this synchronous double eccentric shaft excitation device is as follows:

[0030] The bearings 22 installed at both ends of the eccentric shaft 2 are respectively located in the first oil tank 3 and the second oil tank 4 for lubrication. The eccentric part 21 in the middle of the eccentric shaft 2 is outside the oil tank. Therefore, during the rotation of the eccentric shaft 2, the eccentric part 21 does not contact the lubricating oil, and the rotation is unobstructed, which reduces the energy consumption of equipment operation.

[0031] The driving shaft 2a of the eccentric shaft 2 is driven to rotate by an external driving motor, and the driving shaft 2a and the driven shaft 2b are connected by a synchronous gear 5, so the driving shaft 2a and the driven shaft 2b rotate synchronously;

[0032] In the first oil tank 3 , the synchronous gear 5 will splash the lubricating oil in the first oil tank 3 while rotating, and the lubricating oil will lubricate the synchronous gear 5 . Meanwhile, the splashed lubricating oil will also lubricate the bearing 22 in the first oil tank 3 .

[0033] In the second oil tank 4 , the oil slinger plate 6 rotates together with the driven shaft 2 b , and the oil slinger plate 6 splashes the lubricating oil in the second oil tank 4 , and the splashed lubricating oil lubricates the bearing 22 in the second oil tank 4 .

[0034] The splashed lubricating oil enters from the first oil passage 71 at a relatively higher horizontal position on the bearing seat 7, and reaches the first oil groove 91 along the corresponding second oil passage 81. Since the first oil groove 91 is arranged in a surrounding manner, the lubricating oil is then sent out from the second oil passage 81 below and discharged from the first oil passage 71 at a relatively lower horizontal position on the bearing seat 7, forming a circulating oil circuit, which plays a role in lubrication and cooling, and removes impurities such as metal debris generated during the operation of the equipment into the oil tank;

[0035] The splashed lubricating oil enters from the first oil passage 71, passes through the corresponding oil guide groove 81 and enters the bearing seat 7, and the lubricating oil passes through the bearing 22 from one side and is discharged from the other side, forming a lubricating oil passage, which effectively lubricates the bearing 22 and discharges impurities such as metal debris generated during the operation of the equipment into the oil tank.

[0036] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A synchronous double eccentric shaft excitation device, comprising a base and an eccentric shaft, wherein the middle section of the eccentric shaft is the eccentric part, and the two end sections of the eccentric shaft are arranged on the base through bearings, characterized in that: It also includes a first oil tank, a second oil tank, a synchronous gear, and an oil-slinging plate. The eccentric shaft includes a driving shaft and a driven shaft. The first oil tank and the second oil tank are respectively arranged at both ends of the eccentric shaft, and the end of the eccentric shaft and the bearings at the corresponding ends are sealed therein. Lubricating oil is respectively arranged in the first oil tank and the second oil tank. The driving shaft and the driven shaft in the first oil tank are respectively sleeved with synchronous gears that mesh with each other. The synchronous gears rotate to make the lubricating oil in the first oil tank splash to lubricate the bearings in the first oil tank. The driving shaft and / or the driven shaft in the second oil tank are provided with an oil-slinging plate that rotates together. The oil-slinging plate rotates to make the lubricating oil in the second oil tank splash to lubricate the bearings in the second oil tank. It also includes a bearing seat and a bearing pressure cover, the bearing seat is installed on the base and is sealed with the base, the bearing is installed in the bearing seat, the first oil tank includes a first cover body, the first cover body is covered on one side of the base and covers the bearing seat corresponding to the side, the first cover body and the base are sealed, the second oil tank includes a second cover body, the second cover body is covered on one side of the base and covers the bearing seat corresponding to the side, the second cover body and the base are sealed, the bearing seat forms an open end on one side facing the first cover body or the second cover body, and a bearing pressure cover is provided on the other side for sealing; It also includes a sleeve, which is arranged outside the eccentric shaft and corresponds to the inner side of the bearing cover. The outer side surface of the sleeve is provided with a first oil groove which opens outward and is arranged around the axis. The bearing seat is provided with a first oil channel running through both sides, and the bearing cover is provided with a second oil channel. There are several first oil channels and several second oil channels, and each first oil channel is distributed at a different height position. One end of the second oil channel is connected to the first oil channel, and the other end is connected to the first oil groove. The corresponding first channel, second channel and first oil groove cooperate to form a circulating oil circuit in which the lubricating oil enters from the high-position first oil channel and is discharged from the low-position first oil channel.

2. According to claim 1, a synchronous double eccentric shaft excitation device is characterized in that: An oil guide groove is provided on one side of the bearing cover facing the bearing seat, which corresponds to a first oil channel and is connected to one side of the bearing seat, forming a lubricating oil path in which the lubricating oil enters one side of the bearing seat from the first oil channel and is discharged from the other side after passing through the bearing.

3. According to claim 1, a synchronous double eccentric shaft excitation device is characterized in that: The inner side surface of the bearing cover is provided with a second oil groove which opens inward and is arranged around the axis. The first oil groove and the second oil groove are staggered to form a labyrinth seal structure.

4. A synchronous double eccentric shaft excitation device according to claim 3, characterized in that: A sealing ring is also arranged outside the shaft sleeve, and the sealing ring acts between the bearing cover and the shaft sleeve.

5. The synchronous double eccentric shaft excitation device according to claim 1, characterized in that: An inclined surface facing the bearing direction is provided at the open end of the bearing seat, and the inclined surface is used to guide the lubricating oil to gather in the direction of the bearing.

6. The synchronous double eccentric shaft excitation device according to claim 1, characterized in that: The first oil tank and the second oil tank are respectively provided with an independent refueling port, an oil level mirror and an oil drain port.

7. The synchronous double eccentric shaft excitation device according to claim 1, characterized in that: The utility model also comprises a closing cover which is installed on the base and is located between the first oil tank and the second oil tank, and the closing cover closes the eccentric part of the eccentric shaft inside.

8. A thin oil lubrication method for a synchronous double eccentric shaft excitation device, characterized in that: A synchronous double eccentric shaft excitation device based on any one of claims 1 to 7, The driving shaft rotates and drives the driven shaft to rotate together through the synchronous gear; in the first oil tank, the synchronous gear rotates and splashes the lubricating oil; in the second oil tank, the oil slinger rotates and splashes the lubricating oil; The splashed lubricating oil enters from the first oil passage at a relatively higher horizontal position on the bearing seat, and reaches the first oil groove along the corresponding second oil passage, and then is sent out from the second oil passage below and discharged from the first oil passage at a relatively lower horizontal position on the bearing seat, forming a circulating oil circuit, which plays the role of lubrication, cooling and slag removal; The splashed lubricating oil enters from the first oil passage, passes through the corresponding oil guide groove and enters the bearing seat. The lubricating oil passes through the bearing from one side and is discharged from the other side, forming a lubricating oil passage, which plays a role in lubrication and slag removal.

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