CN210150632U - Slewing bearing mechanism of automobile crane - Google Patents
Slewing bearing mechanism of automobile crane Download PDFInfo
- Publication number
- CN210150632U CN210150632U CN201920974260.7U CN201920974260U CN210150632U CN 210150632 U CN210150632 U CN 210150632U CN 201920974260 U CN201920974260 U CN 201920974260U CN 210150632 U CN210150632 U CN 210150632U
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- slewing bearing
- gear ring
- ring
- outer gear
- bearing outer
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- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 238000009434 installation Methods 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 230000001154 acute effect Effects 0.000 claims description 9
- 230000013011 mating Effects 0.000 claims description 7
- 241000282376 Panthera tigris Species 0.000 claims description 6
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses an automobile crane slewing bearing mechanism, including pairing gear, slewing bearing outer gear ring, the sealing strip, the slewing bearing inner circle, go up connection platform, the semi-circular supporting shoe, first stud hole, lower connection platform, the steel ball, the installation sleeve, the spacing block, connecting key and second stud hole, slewing bearing inner circle's the outside is provided with slewing bearing outer gear ring, slewing bearing outer gear ring's the outside is meshed with pairing gear and is connected, pairing gear's top outer fringe imbeds on last connection platform, and go up connection platform and slewing bearing inner circle and all correspond and seted up second stud hole; the utility model discloses need not to carry out complete dismouting to whole slewing bearing mechanism, can also adjust the meshing region of slewing bearing outer ring gear simultaneously, when direct having reduced complete dismouting expense, still make the utilization ratio of slewing bearing outer ring gear promoted effectively, very big reduction use cost.
Description
Technical Field
The utility model relates to a slewing bearing technical field, concretely relates to mobile crane slewing bearing mechanism.
Background
The slewing bearing mechanism is one of important components of the automobile crane and has the main function of enabling the upper vehicle part and the arm support thereof to rotate in a set range relative to the lower vehicle part. The slewing bearing mechanism is also one of the most frequently used components of the automobile crane, and the slewing operation of the slewing bearing mechanism accounts for more than 50 percent of the total hoisting work.
The rotation is carried out around the central axis of the rotary supporting mechanism, and the full rotation can realize the rotation movement within the range of 360 degrees, and the rotation movement can be clockwise or anticlockwise. In the actual hoisting process of the existing automobile crane, the situation that 360-degree rotary motion is needed is less, and the automobile crane only needs to work within an angle range smaller than 90 degrees under most specific working conditions, so that the abrasion of the outer gear ring of the rotary support in the whole rotary support mechanism in a specific area is aggravated, and further, the hoisting work generates larger impact due to the further increase of the meshing backlash, so that the whole crane cannot work normally due to too frequent vibration; in fact, the outer gear ring of the slewing bearing is only severely abraded in a specific area, other non-working areas are still intact, and when the specific area fails, the whole slewing bearing mechanism needs to be completely disassembled and assembled and the outer gear ring of the slewing bearing needs to be directly replaced, so that the utilization rate of the outer gear ring of the slewing bearing is greatly reduced while high complete disassembly and assembly cost is generated, and the use cost is greatly increased.
The solution is now provided in view of the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a mobile crane slewing bearing mechanism, the utility model discloses a through the outer ring gear structure of slewing bearing who changes in the mobile crane to the mode of design key-type connection makes the mounting means of the outer ring gear of slewing bearing change thereupon, then just can carry out the free rotation of the outer ring gear of slewing bearing under the condition that need not to dismantle whole slewing bearing mechanism completely, thereby increase the utilization ratio of the outer ring gear of slewing bearing, reach the life's of the length of use of improving the outer ring gear of slewing bearing and whole slewing bearing mechanism effect, very big reduction use cost.
The utility model discloses the technical problem that will solve as follows:
how to provide a reasonable dismounting mode when the specific area of slewing bearing outer ring gear became invalid to make its not work area move to specific area and participate in the course of work, when avoiding producing high complete dismouting expense, also improved slewing bearing outer ring gear's utilization ratio greatly, and then reached the effect of practicing thrift use cost.
The purpose of the utility model can be realized by the following technical scheme:
a slewing bearing mechanism of an automobile crane comprises a pairing gear, a slewing bearing outer gear ring, a sealing strip, a slewing bearing inner ring, an upper connecting platform, a semicircular supporting block, a first stud hole, a lower connecting platform, a steel ball, an installation sleeve, an isolation block, a connecting key and a second stud hole, wherein the slewing bearing outer gear ring is arranged on the outer side of the slewing bearing inner ring, the steel ball is embedded between contact surfaces of the slewing bearing inner ring and the slewing bearing outer gear ring, the isolation block is arranged on one side of the steel ball, the outer side of the slewing bearing outer gear ring is meshed with the pairing gear, the outer edge of the top of the pairing gear is embedded into the upper connecting platform, and the upper connecting platform and the slewing bearing inner ring are correspondingly provided with the second stud hole;
the bottom of the outer gear ring of slewing bearing is provided with the installation sleeve, four keyways have been seted up to correspondence between the outer gear ring of slewing bearing and the telescopic contact surface of installation, and the keyway has inserted the connecting key and has fixed the outer gear ring of slewing bearing and installation sleeve mutually, semi-circular supporting shoe is installed to bottom one side tiger's mouth department of the outer gear ring of slewing bearing, and fixes mutually through the parallel key between semi-circular supporting shoe and the outer gear ring of slewing bearing and the installation sleeve, semi-circular supporting shoe all contacts with lower connecting platform with the telescopic bottom of installation, and all corresponds on semi-circular supporting shoe and the lower connecting platform and seted up first turnbuckle hole.
Furthermore, two sealing strips are arranged between the outer gear ring of the slewing bearing and the inner ring of the slewing bearing, one sealing strip is positioned at the contact position of the top of the outer gear ring of the slewing bearing and the inner ring of the slewing bearing, and the other sealing strip is positioned at the contact position of the bottom of the inner ring of the slewing bearing and the outer gear ring of the slewing bearing.
Furthermore, an acute angle formed by the side face, which is in contact with the mounting sleeve, of the outer gear ring of the slewing bearing and the vertical direction is fifteen degrees; and a key groove correspondingly formed between the contact surfaces of the slewing bearing outer gear ring and the mounting sleeve forms a fifteen-degree acute angle with an acute angle clamped in the vertical direction.
Further, the concrete working mode of the slewing bearing mechanism of the automobile crane is as follows:
d1: firstly, placing a steel ball and a spacer block in a slideway on an inner ring of a slewing bearing, then placing an outer gear ring of the slewing bearing between a pairing gear and the inner ring of the slewing bearing and installing a sealing strip, placing an installation sleeve at the bottom of the outer gear ring of the slewing bearing and fixing the installation sleeve through a connecting key, then clamping a semicircular supporting block into a slot at one side of the bottom of the outer gear ring of the slewing bearing, fixing the semicircular supporting block with the outer gear ring of the slewing bearing and the installation sleeve through a flat key, finally jointing a lower connecting platform with the semicircular supporting block and the bottom of the installation sleeve, and inserting a stud into a first stud hole correspondingly formed in the lower connecting platform and the semicircular supporting block so as to complete the integral installation operation;
d2: firstly, the stud in the first stud hole is loosened, the flat key between the semicircular supporting block and the slewing bearing outer gear ring and the flat key between the semicircular supporting block and the installation sleeve are taken out, then the connecting key between the slewing bearing outer gear ring and the installation sleeve is pulled out, and then the slewing bearing outer gear ring is driven to rotate ninety degrees through the external transmission gear, and the gap of the connecting key formed by two semicircular supporting blocks is inserted into the key groove between the contact surfaces of the slewing bearing outer gear ring and the mounting sleeve, then the semicircular supporting block is clamped into a tiger opening at one side of the bottom of the outer gear ring of the slewing bearing, the semicircular supporting block is fixed with the outer gear ring of the slewing bearing and the mounting sleeve through a flat key, and finally the lower connecting platform is jointed with the semicircular supporting block and the bottom of the mounting sleeve, and inserting the stud into the first stud holes correspondingly formed in the lower connecting platform and the semicircular supporting block so as to complete the recycling operation after the integral installation.
The utility model has the advantages that:
the utility model discloses a side that the outer ring gear of slewing bearing contacted with the installation sleeve earlier is fifteen degrees according to the acute angle that vertical direction sandwiched, and then slewing bearing outer ring gear and installation sleeve when the joint that cooperatees, both can be fixed in radial direction, and through the key-type connection mode that has inserted the connecting key, can prevent slewing bearing outer ring gear and installation sleeve's relative circumferential rotation effectively; then the semicircular supporting block is clamped into a tiger opening at one side of the bottom of the slewing bearing outer gear ring, and relative circumferential rotation between the semicircular supporting block and the slewing bearing outer gear ring and between the semicircular supporting block and the mounting sleeve can be effectively limited in a key connection mode of inserting two flat keys;
the arrangement of the two semicircular supporting blocks can realize easy combination or separation with the lower connecting platform, and the installation or the disassembly of the semicircular supporting blocks and the lower connecting platform can be more convenient according to the first stud holes correspondingly formed on the semicircular supporting blocks and the lower connecting platform; the gap formed by the two semicircular supporting blocks is combined with four key grooves correspondingly formed in the circumference between the contact surfaces of the slewing bearing outer gear ring and the mounting sleeve, namely when a specific area of the slewing bearing outer gear ring fails, the slewing bearing outer gear ring can be driven to rotate for ninety degrees through an external transmission gear, and the slewing bearing outer gear ring and the key grooves in the mounting sleeve are opposite to the gap formed by the two semicircular supporting blocks, so that the part of the non-working area of the slewing bearing outer gear ring is positioned in the specific area to participate in the working process;
therefore, complete disassembly and assembly of the whole slewing bearing mechanism are not needed, and meanwhile, the meshing area of the outer gear ring of the slewing bearing can be adjusted, so that the problem that under some special working conditions, part of teeth of the outer gear ring of the slewing bearing always work, and the rest of teeth are always idle until the meshing part of the outer gear ring of the slewing bearing is worn and failed to disassemble and replace the whole slewing bearing mechanism is solved, the complete disassembly and assembly cost is directly reduced, the utilization rate of the outer gear ring of the slewing bearing is effectively improved, and the use cost is greatly reduced.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall side view cross-sectional structure of the present invention;
FIG. 2 is a schematic front view of the enlarged area A of FIG. 1 according to the present invention;
fig. 3 is an enlarged side view of the area a of fig. 1 according to the present invention;
fig. 4 is a schematic view of the structure of the rotary support outer gear ring and the mounting sleeve of the present invention;
in the figure: 1. a mating gear; 2. an outer gear ring of the slewing bearing; 3. a sealing strip; 4. a slewing bearing inner ring; 5. an upper connection platform; 6. a semicircular supporting block; 7. a first stud hole; 8. a lower connecting platform; 9. a steel ball; 10. installing a sleeve; 11. an isolation block; 12. a connecting bond; 13. a second stud hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a slewing bearing mechanism of an automobile crane comprises a mating gear 1, a slewing bearing outer gear ring 2, sealing strips 3, a slewing bearing inner ring 4, an upper connecting platform 5, a semicircular supporting block 6, a first stud hole 7, a lower connecting platform 8, steel balls 9, a mounting sleeve 10, isolating blocks 11, a connecting key 12 and a second stud hole 13, wherein the slewing bearing outer gear ring 2 is arranged on the outer side of the slewing bearing inner ring 4, two sealing strips 3 are arranged between the slewing bearing outer gear ring 2 and the slewing bearing inner ring 4, one sealing strip 3 is positioned at the contact part of the top of the slewing bearing outer gear ring 2 and the slewing bearing inner ring 4, the other sealing strip 3 is positioned at the contact part of the bottom of the slewing bearing inner ring 4 and the slewing bearing outer gear ring 2, the steel balls 9 are embedded between the contact surfaces of the slewing bearing 4 and the slewing bearing outer gear ring 2, the isolating blocks 11 are arranged on one side of the steel balls 9, the outer side of the outer gear ring 2 of the slewing bearing is meshed with the mating gear 1, the outer edge of the top of the mating gear 1 is embedded into the upper connecting platform 5, and the upper connecting platform 5 and the inner ring 4 of the slewing bearing are correspondingly provided with second stud holes 13;
the bottom of the outer gear ring 2 of the slewing bearing is provided with a mounting sleeve 10, and the side surface of the outer gear ring 2 of the slewing bearing, which is in contact with the mounting sleeve 10, forms a fifteen-degree acute angle with the vertical direction; correspond the keyway of seting up and the acute angle that vertical direction pressed from both sides between the contact surface of slewing bearing outer ring gear 2 and installation sleeve 10 and be fifteen degrees, four keyways have been seted up to slewing bearing outer ring gear 2 and installation sleeve 10's contact surface between correspondence, and it is fixed mutually with slewing bearing outer ring gear 2 and installation sleeve 10 to insert connecting key 12 in the keyway, semi-circular supporting shoe 6 is installed to slewing bearing outer ring gear 2's bottom one side tiger's mouth department, and it is fixed mutually through the flat key between semi-circular supporting shoe 6 and slewing bearing outer ring gear 2 and the installation sleeve 10, semi-circular supporting shoe 6 all contacts with lower connecting platform 8 with the bottom of installation sleeve 10, and first stud hole 7 has all been seted up to corresponding on semi-circular supporting shoe 6 and the lower connecting platform 8.
The concrete working mode of the slewing bearing mechanism of the automobile crane is as follows:
d1: firstly, placing a steel ball 9 and a spacer block 11 in a slideway on a slewing bearing inner ring 4, then placing a slewing bearing outer gear ring 2 between a pairing gear 1 and the slewing bearing inner ring 4 and installing a sealing strip 3, placing a mounting sleeve 10 at the bottom of the slewing bearing outer gear ring 2 and fixing the mounting sleeve by a connecting key 12, then clamping a semicircular supporting block 6 at a rabbet on one side of the bottom of the slewing bearing outer gear ring 2, fixing the semicircular supporting block 6 with the slewing bearing outer gear ring 2 and the mounting sleeve 10 by a flat key, finally jointing a lower connecting platform 8 with the semicircular supporting block 6 and the bottom of the mounting sleeve 10, and inserting a stud into a first stud hole 7 correspondingly formed in the lower connecting platform 8 and the semicircular supporting block 6 to complete the integral installation operation;
d2: firstly loosening a stud in a first stud hole 7, taking out a flat key between a semicircular supporting block 6 and a slewing bearing outer gear ring 2 and a mounting sleeve 10, then extracting a connecting key 12 between the slewing bearing outer gear ring 2 and the mounting sleeve 10, then driving the slewing bearing outer gear ring 2 to rotate for ninety degrees through an external transmission gear, inserting a gap formed by two semicircular supporting blocks 6 of the connecting key 12 into a key groove between contact surfaces of the slewing bearing outer gear ring 2 and the mounting sleeve 10, then clamping the semicircular supporting block 6 into a slot at one side of the bottom of the slewing bearing outer gear ring 2, fixing the semicircular supporting block 6 with the slewing bearing outer gear ring 2 and the mounting sleeve 10 through the flat key, finally jointing a lower connecting platform 8 with the semicircular supporting block 6 and the bottom of the mounting sleeve 10, and inserting the stud into the first stud hole 7 correspondingly formed on the lower connecting platform 8 and the semicircular supporting block 6, so as to complete the recycling operation after the integral installation.
The working principle is as follows: the method comprises the following steps that firstly, fifteen degrees are formed according to an acute angle formed by the contact side surface of the slewing bearing outer gear ring 2 and the mounting sleeve 10 and the vertical direction, when the slewing bearing outer gear ring 2 and the mounting sleeve 10 are matched and clamped, the slewing bearing outer gear ring 2 and the mounting sleeve 10 can be fixed in the radial direction, and the relative circumferential rotation of the slewing bearing outer gear ring 2 and the mounting sleeve 10 can be effectively prevented through a key connection mode of inserting a connecting key 12; then the semicircular supporting block 6 is clamped into a tiger opening at one side of the bottom of the slewing bearing outer gear ring 2, and the relative circumferential rotation between the semicircular supporting block 6 and the slewing bearing outer gear ring 2 and between the semicircular supporting block and the mounting sleeve 10 can be effectively limited in a key connection mode of inserting two flat keys;
the two semicircular supporting blocks 6 can be easily combined with or separated from the lower connecting platform 8, and the semicircular supporting blocks 6 and the lower connecting platform 8 can be more conveniently mounted or dismounted according to the first stud holes 7 correspondingly formed in the semicircular supporting blocks and the lower connecting platform 8; and the gap formed by two semicircular supporting blocks 6 and four key slots correspondingly arranged on the circumference between the contact surfaces of the slewing bearing outer gear ring 2 and the mounting sleeve 10 are combined, namely when the failure phenomenon occurs in the specific area of the slewing bearing outer gear ring 2, the slewing bearing outer gear ring 2 can be driven to rotate for ninety degrees through an external transmission gear, and the key slots on the slewing bearing outer gear ring 2 and the mounting sleeve 10 are opposite to the gap formed by the two semicircular supporting blocks 6, so that the part of the non-working area of the slewing bearing outer gear ring 2 is positioned in the specific area to participate in the working process, the whole slewing bearing mechanism is not required to be completely disassembled and assembled, meanwhile, the meshing area of the slewing bearing outer gear ring 2 can be adjusted, the complete disassembly and assembly cost is directly reduced, and the utilization rate of the slewing bearing outer gear ring 2 is effectively improved, greatly reducing the use cost.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. A slewing bearing mechanism of an automobile crane comprises a mating gear (1), a slewing bearing outer gear ring (2), a sealing strip (3), a slewing bearing inner ring (4), an upper connecting platform (5), a semicircular supporting block (6), a first stud hole (7), a lower connecting platform (8), a steel ball (9), a mounting sleeve (10), an isolating block (11), a connecting key (12) and a second stud hole (13), and is characterized in that the slewing bearing outer gear ring (2) is arranged on the outer side of the slewing bearing inner ring (4), the steel ball (9) is embedded between contact surfaces of the slewing bearing inner ring (4) and the slewing bearing outer gear ring (2), the isolating block (11) is arranged on one side of the steel ball (9), the outer side of the slewing bearing outer gear ring (2) is meshed with the mating gear (1), the outer edge of the top of the mating gear (1) is embedded into the upper connecting platform (5), second stud holes (13) are correspondingly formed in the upper connecting platform (5) and the inner ring (4) of the slewing bearing;
the bottom of slewing bearing outer gear ring (2) is provided with installation sleeve (10), four keyways have been seted up to corresponding between the contact surface of slewing bearing outer gear ring (2) and installation sleeve (10), and inserted connecting key (12) in the keyway and fixed slewing bearing outer gear ring (2) and installation sleeve (10) mutually, semi-circular supporting shoe (6) are installed to bottom one side tiger mouth department of slewing bearing outer gear ring (2), and are fixed mutually through the flat key between semi-circular supporting shoe (6) and slewing bearing outer gear ring (2) and installation sleeve (10), semi-circular supporting shoe (6) all contact with lower connecting platform (8) with the bottom of installation sleeve (10), and all correspond on semi-circular supporting shoe (6) and lower connecting platform (8) and seted up first stud hole (7).
2. The slewing bearing mechanism of the mobile crane according to claim 1, wherein two sealing strips (3) are arranged between the outer slewing bearing gear ring (2) and the inner slewing bearing ring (4), one sealing strip (3) is arranged at the contact position of the top of the outer slewing bearing gear ring (2) and the inner slewing bearing ring (4), and the other sealing strip (3) is arranged at the contact position of the bottom of the inner slewing bearing ring (4) and the outer slewing bearing gear ring (2).
3. The slewing bearing mechanism of the automobile crane according to claim 1, wherein the side face of the slewing bearing outer gear ring (2) in contact with the mounting sleeve (10) forms an acute angle of fifteen degrees with the vertical direction; and a key groove correspondingly formed between the contact surfaces of the slewing bearing outer gear ring (2) and the mounting sleeve (10) forms fifteen degrees with an acute angle clamped in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920974260.7U CN210150632U (en) | 2019-06-26 | 2019-06-26 | Slewing bearing mechanism of automobile crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920974260.7U CN210150632U (en) | 2019-06-26 | 2019-06-26 | Slewing bearing mechanism of automobile crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210150632U true CN210150632U (en) | 2020-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920974260.7U Withdrawn - After Issue CN210150632U (en) | 2019-06-26 | 2019-06-26 | Slewing bearing mechanism of automobile crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210150632U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171778A (en) * | 2019-06-26 | 2019-08-27 | 马鞍山统力回转支承有限公司 | A kind of autocrane Slewing Support Mechanism |
-
2019
- 2019-06-26 CN CN201920974260.7U patent/CN210150632U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171778A (en) * | 2019-06-26 | 2019-08-27 | 马鞍山统力回转支承有限公司 | A kind of autocrane Slewing Support Mechanism |
| CN110171778B (en) * | 2019-06-26 | 2024-01-30 | 马鞍山统力回转支承有限公司 | Slewing bearing mechanism of automobile crane |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200317 Effective date of abandoning: 20240130 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200317 Effective date of abandoning: 20240130 |