CN219932720U - Small slewing bearing for building dismantling machine - Google Patents
Small slewing bearing for building dismantling machine Download PDFInfo
- Publication number
- CN219932720U CN219932720U CN202320760941.XU CN202320760941U CN219932720U CN 219932720 U CN219932720 U CN 219932720U CN 202320760941 U CN202320760941 U CN 202320760941U CN 219932720 U CN219932720 U CN 219932720U
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- CN
- China
- Prior art keywords
- slewing bearing
- inner ring
- outer ring
- ball row
- ring
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- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000004308 accommodation Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 abstract description 19
- 239000010687 lubricating oil Substances 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 210000002445 nipple Anatomy 0.000 description 7
- 238000004891 communication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a small slewing bearing for a building dismantling machine, which comprises an outer ring, an inner ring, a first ball row, a second ball row and a sealing strip. By arranging two ball rows, compared with a single ball row, the utility model not only ensures that the device has better load bearing capacity, but also can ensure that even if one ball row is damaged and fails in the use process, the other ball row can still work continuously so as to ensure the work of the device, thereby being suitable for the equipment with high-strength work such as a building dismantling machine. In addition, the utility model is also provided with the sealing strip which can seal one end of the gap so as to reduce the entry of external dust or garbage and the like into the utility model and influence the work of the ball row, and the oil duct can facilitate the entry of lubricating oil so as to facilitate the lubrication of the work of the ball row, thereby reducing the abrasion of the roller row during the work of the utility model and adapting to the long-time work of the building dismantling machine.
Description
Technical Field
The utility model relates to the field of engineering equipment design, in particular to a small slewing bearing for a building dismantling machine.
Background
The structure of the building dismantling machine is similar to that of the excavator, and the difference is mainly that the working arm and the front end connected with the working arm are different, the working arm of the building dismantling machine is generally in a three-section type, and the front end connected with the working arm is generally a hydraulic shear or a breaking hammer and is mainly used for dismantling buildings such as buildings. In order to facilitate the rotation of the working arm and change the working position of the front end and other structures, the building dismantling machine is often provided with a slewing bearing.
Single row ball bearings are common bearings that include a single row ball bearing row and an inner and outer race that are rotated relative to each other by the single row ball bearing row. However, the building dismantling machine has high working strength, long working time and strong impact on the slewing bearing, and if the single-row ball slewing bearing is used in the building dismantling machine, the single-row balls are easy to damage under the impact, and once the single-row balls are damaged, the normal work of the building dismantling machine can be seriously affected. On the other hand, the common slewing bearing often lacks effective and durable lubrication, and is difficult to adapt to long-time work of a building dismantling machine.
Disclosure of Invention
The present utility model aims to provide a small slewing bearing for a building dismantling machine, which can solve one or more of the problems.
According to one aspect of the utility model, a small slewing bearing for a building dismantling machine is provided, and the small slewing bearing comprises an outer ring, an inner ring, a first ball row, a second ball row and a sealing strip, wherein the diameter of the outer ring is 695 mm-700 mm, the inner ring is provided with a first central hole, the diameter of the first central hole is 460 mm-480 mm, the outer ring is arranged on the periphery of the inner ring, a gap is reserved between the outer ring and the inner ring, a first accommodating cavity and a second accommodating cavity which are communicated with the gap are formed by the outer ring and the inner ring in a surrounding mode, the first ball row can be arranged in the first accommodating cavity in a rolling mode, the second ball row can be arranged in the second accommodating cavity in a rolling mode, the sealing strip is arranged on the outer ring and covers one end of the gap, the inner ring is provided with an oil duct, and the oil duct is communicated with the gap.
The beneficial effects of the utility model are as follows: by arranging two ball rows, compared with a single ball row, the utility model not only ensures that the device has better load bearing capacity, but also can ensure that even if one ball row is damaged and fails in the use process, the other ball row can still work continuously so as to ensure the work of the device, thereby being suitable for the equipment with high-strength work such as a building dismantling machine. In addition, the utility model is also provided with the sealing strip which can seal one end of the gap so as to reduce the entry of external dust or garbage and the like into the utility model and influence the work of the ball row, and the oil duct can facilitate the entry of lubricating oil so as to facilitate the lubrication of the work of the ball row, thereby reducing the abrasion of the roller row during the work of the utility model and adapting to the long-time work of the building dismantling machine.
In some embodiments, the top of the outer race, the top of the inner race, and the other end of the gap are all flush. Thus, after the outer ring or the inner ring is connected with other structures of the building removing machine, the structures can be covered on the end of the gap to seal the end of the gap.
In some embodiments, the outer ring is provided with a second central hole, the inner wall of the second central hole is provided with a first rollaway nest and a second rollaway nest, the outer side of the inner ring is provided with a third rollaway nest and a fourth rollaway nest, the first rollaway nest and the third rollaway nest form a first accommodating cavity, and the second rollaway nest and the fourth rollaway nest form a second accommodating cavity.
In some embodiments, the bottom of the inner ring is higher than the top of the outer ring, the inner wall of the second central hole is provided with a groove, and the sealing strip is embedded on the groove and abuts against the bottom of the inner ring. The design can facilitate the installation of the sealing strip and ensure that the sealing strip can effectively cover one end of the gap.
In some embodiments, the inner ring is provided with a first mounting hole and the outer ring is provided with a second mounting hole, the first and second mounting holes being arranged in parallel.
In some embodiments, the present utility model further includes a nipple mounted on an inner wall of the first central bore, the nipple in communication with the oil gallery. The oil nozzle can be conveniently connected with the external oil supply device so as to realize the communication between the oil duct and the external oil supply device, and the oil nozzle is arranged in the first center hole, so that the difficulty in connection with the external oil supply device can be reduced.
In some embodiments, the axial clearance and the radial clearance of the outer ring and the inner ring are both 0.06-0.1 mm. Therefore, the problem that the gap between the outer ring and the inner ring is too large to work effectively can be avoided.
In some embodiments, the hardness of the outer ring and the inner ring is HB 220-269, the outer ring is a quenched and tempered 42CrMo steel outer ring, and the inner ring is a quenched and tempered 42CrMo steel inner ring. Thereby, it can be ensured that the outer ring and the inner ring can have sufficient strength for use.
Drawings
Fig. 1 is a cross-sectional view schematically showing the structure of a small slewing bearing for a building removing machine according to an embodiment of the present utility model.
Fig. 2 is a cross-sectional view schematically showing the structure of a small slewing bearing for a building removing machine according to an embodiment of the present utility model.
Fig. 3 is a cross-sectional view schematically showing the structure of an outer ring of a small slewing bearing for a building removing machine according to an embodiment of the present utility model.
Fig. 4 is a cross-sectional view schematically showing a structure of an inner ring of a small slewing bearing for a building-dismantling machine according to an embodiment of the present utility model.
In the figure: 1. outer race, 2 inner race, 3 first row of balls, 4 second row of balls, 5 seal strip, 6 nipple, 10 clearance, 21 first central bore, 11 second central bore, 101 first receiving chamber, 102 second receiving chamber, 111 first race, 112 second race, 22 third race, 23 fourth race, 113 recess, 24 first mounting hole, 12 second mounting hole and 25 oil gallery.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, 2, 3 and 4, the small slewing bearing for a building dismantling machine of the present utility model includes an outer ring 1, an inner ring 2, a first ball row 3, a second ball row 4 and a sealing strip 5.
The diameter of the outer ring 1 is 695mm to 700mm, the hardness of the outer ring 1 and the hardness of the inner ring 2 are HB220 to 269, the outer ring is a quenched and tempered 42CrMo steel outer ring, and the inner ring is a quenched and tempered 42CrMo steel inner ring.
The inner ring 2 is provided with a first central hole 21, the diameter of the first central hole 21 is between 460mm and 480mm, the outer ring 1 is provided with a second central hole 11, the inner ring 2 is positioned in the second central hole 11, the outer ring 1 is arranged on the periphery of the inner ring 2, and a gap 10 is reserved between the arranged outer ring 1 and the inner ring 2. The axial clearance and the radial clearance of the outer ring 1 and the inner ring 2 after the arrangement are between 0.06mm and 0.1mm.
The inner wall of the second center hole 11 of the outer ring 1 is provided with a first rollaway nest 111 and a second rollaway nest 112, the outer side part of the inner ring 2 is provided with a third rollaway nest 22 and a fourth rollaway nest 23, when the outer ring 1 is arranged on the periphery of the inner ring 2, the first rollaway nest 111 and the third rollaway nest 22 form a first accommodating cavity 101, the second rollaway nest 112 and the fourth rollaway nest 23 form a second accommodating cavity 102, namely the outer ring 1 and the inner ring 2 enclose a first accommodating cavity 101 and a second accommodating cavity 102, and the first accommodating cavity 101 and the second accommodating cavity 102 are communicated with the gap 10.
The first ball row 3 is rollably disposed in the first accommodation chamber 101, and the second ball row 4 is rollably disposed in the second accommodation chamber 102. The first ball row 3 can include a plurality of balls and a cage, all of which are disposed on the cage so that relative positions therebetween are fixed, and all of which are abutted against the first raceway 111 and the second raceway 112 of the first accommodation chamber 101, and the balls can roll in the first accommodation chamber 101. The second ball row 4 can also include a plurality of balls and a cage, all of which are disposed on the cage so that the relative positions therebetween are fixed, and all of which are abutted against the third raceway 22 and the fourth raceway 23 of the second housing chamber 102, and the balls can roll in the second housing chamber 102.
The bottom of the inner ring 2 is higher than the top of the outer ring 1 after setting, the inner wall of the second central hole 11 is provided with a groove 113, one end of the sealing strip 5 is fixedly embedded on the groove 113, and the sealing strip 5 butts against the bottom of the inner ring 2.
The top of the outer ring 1, the top of the inner ring 2 and the other end of the gap 10 are all flush.
The inner ring 2 is also provided with a first mounting hole 24, the outer ring 1 is also provided with a second mounting hole 12, the first mounting hole 24 and the second mounting hole 12 can be multiple, all the first mounting holes 24 and the second mounting holes 12 are arranged in parallel, and the first mounting hole 24 and the second mounting hole 12 are also parallel to the first central hole 21 and the second central hole 11.
An oil duct 25 is arranged in the inner ring 2, one end of the oil duct 25 is communicated with the gap, and the other end of the oil duct 25 is arranged on the inner wall of the first center hole 21.
The utility model further comprises a nipple 6, wherein the nipple 6 is arranged on the inner wall of the first central hole 21, the nipple 6 is arranged on the end of the oil duct 25 on the inner wall of the first central hole 21, and the nipple 6 is communicated with the oil duct 25.
The utility model can be adapted to a building dismantling machine by limiting the size of the first central holes 21 of the outer ring 1 and the inner ring 2, and the utility model is better suitable for equipment with high-strength work such as the building dismantling machine by arranging the first ball row 3 and the second ball row 4 rather than just arranging one ball row, thereby ensuring better load bearing capacity, and ensuring that even if one ball row is damaged and fails in the use process, the other ball row can still work, so that the utility model can be better adapted to the equipment with high-strength work such as the building dismantling machine.
In addition, the top of the outer ring 1, the top of the inner ring 2 and one end of the gap 10 are all level, so that after the outer ring 1 or the inner ring 2 is connected with other structures of the building dismantling machine, the structures can be covered on the end of the gap 10 to seal the end of the gap, and the utility model can be further provided with a sealing strip 5 which can seal the other end of the gap 10 to reduce the entry of external dust or garbage and the like into the utility model and influence the work of the first ball row 3 or the second ball row 4. Meanwhile, the utility model is also internally provided with the oil duct 25, the oil duct 25 can facilitate the addition of external lubricating oil into the gap 10, and because the gap 10 is communicated with the first accommodating cavity 101 and the second accommodating cavity 102, the lubricating oil can enter the first accommodating cavity 101 and the second accommodating cavity 102 to lubricate the work of the first ball row 3 and the second ball row 4, thereby reducing the abrasion of the roller row during the work of the utility model and adapting to the long-time work of the building dismantling machine.
What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.
Claims (8)
1. The utility model provides a tear small-size slewing bearing of building machine open, its characterized in that includes outer lane, inner circle, first ball row, second ball row and sealing strip, the diameter of outer lane is 695mm ~700mm, the inner circle is equipped with first centre bore, the diameter of first centre bore is 460 ~480mm, the periphery of inner circle is located to the outer lane, leave the clearance between outer lane and the inner circle, first accommodation chamber and the second accommodation chamber that are linked together are enclosed to outer lane and inner circle, first ball row can locate first accommodation intracavity with rolling, second ball row can locate second accommodation intracavity with rolling, the sealing strip is installed on the outer lane to cover the one end of clearance, the inner circle is equipped with the oil duct, the oil duct is linked together with the clearance.
2. The small slewing bearing for a building removing machine according to claim 1, wherein the top of the outer ring, the top of the inner ring and the other end of the gap are all flush.
3. The small slewing bearing for a building dismantling machine according to claim 1, wherein the outer ring is provided with a second central hole, the inner wall of the second central hole is provided with a first rollaway nest and a second rollaway nest, the outer side part of the inner ring is provided with a third rollaway nest and a fourth rollaway nest, the first rollaway nest and the third rollaway nest form a first accommodating cavity, and the second rollaway nest and the fourth rollaway nest form a second accommodating cavity.
4. A small-sized slewing bearing for a building removing machine according to claim 3, wherein the bottom of the inner ring is higher than the top of the outer ring, the inner wall of the second central hole is provided with a groove, and the sealing strip is embedded in the groove and abuts against the bottom of the inner ring.
5. The small slewing bearing for a building dismantling machine according to claim 1, wherein the inner ring is provided with a first mounting hole, the outer ring is provided with a second mounting hole, and the first mounting hole and the second mounting hole are arranged in parallel.
6. The small slewing bearing for a building dismantling machine according to claim 1, comprising a nozzle tip, wherein the nozzle tip is arranged on the inner wall of the first center hole, and the nozzle tip is communicated with the oil duct.
7. The small slewing bearing for a building dismantling machine according to claim 1, wherein the axial clearance and the radial clearance of the outer ring and the inner ring are 0.06-0.1 mm.
8. The small slewing bearing for the building dismantling machine according to claim 1, wherein the hardness of the outer ring and the hardness of the inner ring are HB 220-269, the outer ring is a quenched and tempered 42CrMo steel outer ring, and the inner ring is a quenched and tempered 42CrMo steel inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320760941.XU CN219932720U (en) | 2023-04-10 | 2023-04-10 | Small slewing bearing for building dismantling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320760941.XU CN219932720U (en) | 2023-04-10 | 2023-04-10 | Small slewing bearing for building dismantling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219932720U true CN219932720U (en) | 2023-10-31 |
Family
ID=88491899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320760941.XU Active CN219932720U (en) | 2023-04-10 | 2023-04-10 | Small slewing bearing for building dismantling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219932720U (en) |
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2023
- 2023-04-10 CN CN202320760941.XU patent/CN219932720U/en active Active
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