CN113526380B - Cargo boom slewing device of port crane - Google Patents
Cargo boom slewing device of port crane Download PDFInfo
- Publication number
- CN113526380B CN113526380B CN202111086322.9A CN202111086322A CN113526380B CN 113526380 B CN113526380 B CN 113526380B CN 202111086322 A CN202111086322 A CN 202111086322A CN 113526380 B CN113526380 B CN 113526380B
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- Prior art keywords
- crankshaft
- slewing
- rotary
- bearing
- seat
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/1004—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys
Abstract
The invention relates to the field of intelligent manufacturing equipment, in particular to a device for directly acting lifting force on a load surface, wherein a rotary driving assembly drives a rotary supporting column to axially rotate on a mounting seat, the rotary supporting column is supported by a rotary rolling component in the rotating process to further drive a cargo boom to axially rotate so as to realize the hoisting of a wharf cargo, the rotary supporting column drives a connecting crankshaft to axially rotate in the rotating process, a crankshaft connecting rod is eccentrically arranged on the connecting crankshaft, the axial rotation of the connecting crankshaft drives the crankshaft connecting rod to horizontally extend and retract, so that the crankshaft connecting rod axially extends and retracts in a damper, the damper buffers the extension and retraction of the crankshaft connecting rod, the rotation of the connecting crankshaft and the rotary supporting column is further slowed down, and the rotary supporting column can rapidly stop rotating after a rotary driving device stops driving, thereby reducing wear of the device.
Description
Technical Field
The invention relates to the field of intelligent manufacturing equipment, in particular to a boom slewing device of a port crane.
Background
At present, a boom slewing device of a port crane is arranged on a base through a slewing bearing device so as to support a boom.
Because the slewing bearing device is subjected to the reverse acting force of the crane boom, the crane boom still drives the slewing device to rotate in the axial direction due to the inertia of a hoisted object in the hoisting process after the slewing driving device stops driving, and then the slewing driving device is abraded.
Disclosure of Invention
The invention aims to provide a jib slewing device of a port crane, and aims to solve the technical problem that in the prior art, due to the inertia of a hoisted object, after a slewing driving device stops driving, a jib still drives the slewing device to rotate in the axial direction, so that the slewing driving device is abraded.
In order to achieve the purpose, the invention adopts a cargo boom rotating device of a harbor crane, which comprises a mounting seat, a rotating support component, a rotating driving component and a cargo boom,
the lifting arm rotates with the mounting seat through the slewing bearing assembly, and the slewing driving assembly is arranged on the mounting seat and drives the lifting arm to rotate;
the slewing bearing assembly comprises a slewing bearing column, a slewing rolling member, a connecting crankshaft, a crankshaft connecting rod and a damper, the slewing bearing column is rotatably arranged on the mounting seat through the slewing rolling member, the top of the slewing bearing column is fixedly provided with the crane boom, the bottom of the slewing bearing column extends into the mounting seat, the slewing rolling member supports the rotation of the slewing bearing column, one end of the connecting crankshaft is fixedly arranged on one side of the slewing bearing column extending into the mounting seat, the other end of the connecting crankshaft is rotatably connected with the mounting seat, one end of the crankshaft connecting rod is rotatably connected with the connecting crankshaft, the other end of the crankshaft connecting rod is connected with the damper, and the damper buffers the crankshaft connecting rod.
The damper is used for buffering the extension and retraction of the crankshaft connecting rod, so that the rotation of the connecting crankshaft and the rotary supporting column is slowed down, the rotary supporting column can be rapidly stopped to rotate after the rotary driving device stops driving, and the abrasion of the device is reduced.
The connecting crankshaft comprises a rotary table connecting seat, a crankshaft body and a supporting seat, wherein the rotary table connecting seat is fixedly arranged on the rotary supporting column and is positioned on one side, extending into the mounting seat, of the rotary supporting column; the supporting seat is rotatably arranged on the mounting seat and is positioned on one side of the mounting seat close to the turntable connecting seat; the crankshaft body is arranged between the rotary table connecting seat and the supporting seat.
Each crankshaft connecting rod is respectively buffered by the damper, and the crankshaft body positioned at the bottommost part is installed at the bottom of the cavity of the installation seat through the supporting seat, so that the rotation of the rotary supporting column can be better buffered.
The crankshaft body comprises a first block body, a connecting shaft rod and a second block body, wherein the first block body is fixedly arranged on the turntable connecting seat and is positioned on one side, far away from the rotary supporting column, of the turntable connecting seat; the second block body is fixedly arranged on the supporting seat and is positioned on one side of the supporting seat close to the first block body; the connecting shaft is fixedly disposed between the first block and the second block.
So that the connecting shaft rod is driven by the first block and the second block to rotate axially.
The crankshaft connecting rod comprises a rotary bearing and a rod piece, and the rotary bearing is sleeved on the connecting shaft rod; one end of the rod piece is connected with the damper, the other end of the rod piece is connected with the slewing bearing, and the slewing bearing drives the rod piece to rotate.
The balls in the slewing bearing drive the outer ring and the inner ring to rotate, so that the end part of the rod piece is driven to rotate on the connecting shaft rod, and the rod piece is stretched at one end far away from the connecting shaft rod.
The damper comprises a shell, a damping piston and a steering bearing, wherein the shell is fixedly connected with the mounting seat through a support and is arranged on one side, close to the rod piece, of the mounting seat; the damping piston is slidably mounted in the housing and compresses air in the housing; the steering bearing is rotatably arranged on the damping piston and connected with the rod piece to drive the rod piece and the damping piston to rotate.
The damping piston is provided with a bearing installation groove, a notch of the bearing installation groove is positioned at one side, close to the steering bearing, of the damping piston, and the steering bearing is installed in the bearing installation groove.
The rod slides in the housing together with the damping piston, and the damping piston presses air in the housing, so that the internal pressure and the external pressure of the housing are changed, and the damping piston and the rod are buffered.
The rotary driving assembly comprises a transmission belt and a rotary driving motor, one side of the transmission belt is sleeved on the rotary supporting column, and the other side of the transmission belt is sleeved at the output end of the rotary driving motor; the rotary driving motor drives the transmission belt to slide and drives the rotary supporting column to rotate.
The rotary driving motor comprises a motor shell, an output shaft rod and a driving shaft sleeve, the motor shell is installed on the installation seat through a support, the output shaft rod is installed at the output end of the motor shell, the inner side of the driving shaft sleeve is sleeved on the output shaft rod, and the outer side of the driving shaft sleeve is connected with the transmission belt.
The motor shell drives the output shaft rod to rotate, so that the driving shaft sleeve is driven to rotate, the rotary supporting column is driven to axially rotate, and the crane boom is axially driven.
The invention relates to a boom slewing gear of a port crane, which drives a slewing bearing column to axially rotate on a mounting seat through a slewing drive component, the slewing bearing column is supported by a slewing rolling component in the rotating process, thereby driving the cargo boom to axially rotate, realizing the hoisting of the wharf cargo, driving the connecting crankshaft to axially rotate in the rotating process of the rotary supporting column, because the crankshaft connecting rod is eccentrically arranged on the connecting crankshaft, the axial rotation of the connecting crankshaft drives the crankshaft connecting rod to stretch in the horizontal direction, thereby realizing the axial extension and contraction of the crankshaft connecting rod in the damper, the damper buffers the extension and contraction of the crankshaft connecting rod, and then slow down the rotation of connecting bent axle and slewing bearing post to after the slewing drive device stops driving, slewing bearing post can stop rotating fast, and then has reduced the wearing and tearing of device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the installation structure of a crane arm and an installation seat of the invention.
Fig. 2 is a schematic view of the structure of the connecting crankshaft of the present invention.
FIG. 3 is a cross-sectional view of the crankshaft connecting rod and damper of the present invention.
Fig. 4 is a schematic view of a connecting structure of a crankshaft connecting rod and a damper of the present invention.
Fig. 5 is a schematic structural view of a swing drive assembly of the present invention.
Fig. 6 is a schematic view of the mounting structure of the rolling guide of the present invention.
Fig. 7 is a schematic structural view of a slewing bearing assembly of the present invention.
In the figure: 1-mounting seat, 2-slewing bearing assembly, 3-slewing drive assembly, 4-crane boom, 21-slewing bearing column, 22-slewing rolling component, 23-connecting crankshaft, 24-crankshaft connecting rod, 25-damper, 31-transmission belt, 32-slewing drive motor, 211-slewing tapered slot, 221-rolling guide rail, 222-tapered roller, 231-turntable connecting seat, 232-crankshaft body, 233-supporting seat, 241-slewing bearing, 242-rod piece, 251-shell, 252-damping piston, 253-steering bearing, 321-motor shell, 322-output shaft rod, 323-driving shaft sleeve, 2211-roller mounting groove, 2321-first block, 2322-connecting shaft rod, 2323-second block, 2521-bearing mounting groove.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout, and which are illustrated in the following description with reference to the accompanying drawings and are intended to be illustrative of the invention and not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, are not to be construed as limiting the present invention, and in the description of the present invention, "plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 7, the present invention provides a boom swiveling mechanism of a port crane, including a mounting base 1, a swiveling support assembly 2, a swiveling drive assembly 3, and a boom 4,
the cargo boom 4 rotates with the mounting base 1 through the slewing bearing assembly 2, and the slewing drive assembly 3 is arranged on the mounting base 1 and drives the cargo boom 4 to rotate;
the slewing bearing assembly 2 comprises a slewing bearing column 21, a slewing rolling member 22, a connecting crankshaft 23, a crankshaft connecting rod 24 and a damper 25, the rotary supporting column 21 is rotatably arranged on the mounting base 1 through the rotary rolling component 22, the top of the rotary supporting column 21 is fixedly provided with the crane boom 4, the bottom of the rotary supporting column 21 extends into the mounting seat 1, the rotary rolling component 22 supports the rotation of the rotary supporting column 21, one end of the connecting crankshaft 23 is fixedly arranged at one side of the rotary supporting column 21 extending into the mounting seat 1, the other end of the connecting crankshaft 23 is rotationally connected with the mounting seat 1, one end of the crankshaft connecting rod 24 is rotationally connected with the connecting crankshaft 23, the other end of the crankshaft connecting rod 24 is connected to the damper 25, and the damper 25 cushions the crankshaft connecting rod 24.
In the embodiment, the mounting base 1 is a rectangular body, the bottom of the mounting base 1 is mounted on the ground of a port dock through an embedded part, the top of the mounting base 1 is kept parallel to the horizontal plane by adjusting the mounting height of the mounting base 1 and the embedded part, the mounting base 1 is internally provided with a cavity for mounting the slewing bearing assembly 2 and the slewing drive assembly 3, the cavity is arranged at the bottom of the mounting base 1, and the top of the mounting base 1 is a metal stressed layer for mounting the slewing bearing column 21; a hole for installing the rotary rolling member 22 and the rotary supporting column 21 is formed in the top of the installation base 1, the rotary supporting column 21 is a cylinder, the outer side of the rotary supporting column 21 is rotatably installed on the installation base 1 through the rotary rolling member 22, the boom 4 is installed on the top of the rotary supporting column 21, and the boom 4 is obliquely installed on the rotary supporting column 21, so that the hoisting moment arm is longer; the connecting crankshaft 23 is vertically installed in the cavity of the mounting seat 1, the top of the connecting crankshaft 23 is fixed on the bottom surface of the slewing bearing column 21 through a reinforcing rib and a bolt, so that the connecting stability of the connecting crankshaft 23 and the slewing bearing column 21 is better, the central axis of the connecting crankshaft 23 and the axial axis of the slewing bearing column 21 are on the same straight line, the crankshaft connecting rod 24 is respectively connected with the damper 25 and the connecting crankshaft 23, one end of the crankshaft connecting rod 24 realizes eccentric rotation with the connecting crankshaft 23, the other end of the crankshaft connecting rod 24 realizes rotation with the damper 25, and the crankshaft connecting rod 24 can extend and retract towards the inside of the damper 25, so that the crankshaft connecting rod 24 is axially buffered by the damper 25; thus, the rotary driving assembly 3 drives the rotary supporting column 21 to axially rotate on the mounting base 1, the rotary supporting column 21 is supported by the rotary rolling member 22 in the rotation process, and further drives the crane boom 4 to axially rotate, so as to realize the hoisting of the wharf cargo, the rotary supporting column 21 drives the connecting crankshaft 23 to axially rotate in the rotation process, because the crankshaft connecting rod 24 is eccentrically mounted on the connecting crankshaft 23, the axial rotation of the connecting crankshaft 23 drives the crankshaft connecting rod 24 to horizontally extend and retract, so as to realize the axial extension and retraction of the crankshaft connecting rod 24 in the damper 25, the damper 25 buffers the extension and retraction of the crankshaft connecting rod 24, and further slows down the rotation of the connecting crankshaft 23 and the rotary supporting column 21, so that after the rotary driving device stops driving, the slewing bearing column 21 can be stopped from rotating quickly, and therefore wear of the device is reduced.
Further, referring to fig. 2, fig. 3 and fig. 5, the connecting crankshaft 23 includes a turntable connecting seat 231, a crankshaft body 232 and a supporting seat 233, the turntable connecting seat 231 is fixedly mounted on the rotary supporting column 21 and is located at one side of the rotary supporting column 21 extending into the mounting seat 1; the supporting seat 233 is rotatably mounted on the mounting seat 1 and is located on one side of the mounting seat 1 close to the turntable connecting seat 231; the crankshaft body 232 is disposed between the turntable connecting seat 231 and the supporting seat.
In this embodiment, the turntable connecting seat 231 is a circular truncated cone with different diameters, the end with the larger diameter of the turntable connecting seat 231 is mounted on the rotary support column 21 through a bolt, the end with the smaller diameter of the turntable connecting seat 231 is connected with the crankshaft body 232, the crankshaft body 232 is used for mounting the crankshaft connecting rods 24, the number of the crankshaft bodies 232 can be multiple, two adjacent crankshaft bodies 232 are fixed through a support, the multiple crankshaft bodies 232 are connected with the crankshaft connecting rods 24 with the corresponding number, each crankshaft connecting rod 24 is buffered by the damper 25, and the crankshaft body 232 located at the bottommost portion is mounted at the bottom of the cavity of the mounting seat 1 through the support seat 233, so that the rotation of the rotary support column 21 can be better buffered.
Further, referring to fig. 2, fig. 3 and fig. 5, the crankshaft body 232 includes a first block 2321, a connecting shaft 2322 and a second block 2323, the first block 2321 is fixedly installed on the turntable connecting seat 231 and is located on a side of the turntable connecting seat 231 away from the rotation support column 21; the second block 2323 is fixedly mounted on the supporting seat and is located on one side of the supporting seat 233 close to the first block 2321; the connecting shaft 2322 is fixedly disposed between the first block 2321 and the second block 2323.
In this embodiment, the crankshaft body 232 includes two upper and lower first blocks 2321 and second blocks 2323, the connecting shaft 2322 is integrally installed between the first block 2321 and the second block 2323, and the connecting shaft 2322 is a cylinder and is used for installing the crankshaft connecting rod 24; the opposing planes of the first block 2321 and the second block 2323 are parallel, so that the connecting shaft 2322 is driven by the first block 2321 and the second block 2323 to rotate axially.
Further, referring to fig. 2 to 5, the crankshaft connecting rod 24 includes a rotary bearing 241 and a rod 242, the rotary bearing 241 is sleeved on the connecting shaft 2322; one end of the rod 242 is connected to the damper 25, the other end of the rod 242 is connected to the rotary bearing 241, and the rotary bearing 241 drives the rod 242 to rotate.
In this embodiment, the inner ring of the rotary bearing 241 is sleeved on the connecting shaft 2322, the outer ring of the rotary bearing 241 is welded and fixed to the rod 242, and the ball inside the rotary bearing 241 drives the outer ring and the inner ring to rotate, so as to drive the end of the rod 242 to rotate on the connecting shaft 2322, thereby extending and contracting the end of the rod 242 away from the connecting shaft 2322.
Further, referring to fig. 2 to 5, the damper 25 includes a housing 251, a damping piston 252 and a steering bearing 253, wherein the housing 251 is fixedly connected to the mounting base 1 through a bracket and is disposed on a side of the mounting base 1 close to the rod 242; the damping piston 252 is slidably installed in the housing 251 and presses air in the housing 251; the steering bearing 253 is rotatably mounted on the damping piston 252 and connected to the rod 242 to drive the rod 242 and the damping piston 252 to rotate.
Further, referring to fig. 3, the damping piston 252 has a bearing mounting groove 2521, the notch of the bearing mounting groove 2521 is located on the side of the damping piston 252 close to the steering bearing 253, and the steering bearing 253 is mounted in the bearing mounting groove 2521.
In this embodiment, the housing 251 of the damper 25 is mounted in the cavity of the mounting base 1 by a bracket, the housing 251 has a pneumatic chamber inside, the damping piston 252 seals the pneumatic chamber of the housing 251, the outer side surface of the damping piston 252 is in sliding contact with the inner side surface of the housing 251, the damping piston 252 has the bearing mounting groove 2521 on the side close to the rod 242, the bearing mounting groove 2521 is a "U" shaped groove for mounting the steering bearing 253, both side ends of the inner ring of the steering bearing 253 are welded to the groove wall of the bearing mounting groove 2521 of the damping piston 252, the outer ring of the steering bearing 253 rotates on the inner ring of the steering bearing 253 by balls, and the outer ring of the steering bearing 253 is welded to the end of the rod 242 so that the rod 242 can rotate on the damping piston 252, and the rod 242 slides in the housing 251 together with the damping piston 252, the damping piston 252 and the rod 242 are buffered due to the change of the internal and external pressures of the housing 251 caused by the damping piston 252 pressing the air in the housing 251.
Further, referring to fig. 6 and 7, the rotary rolling member 22 includes a rolling guide rail 221 and a tapered roller 222, the outer side of the rolling guide rail 221 is fixedly installed on the mounting base 1, and the rolling guide rail 221 is sleeved on the outer side of the rotary supporting column 21; one side of the tapered roller 222 is slidably connected to the rolling guide 221, and the other side of the tapered roller 222 is slidably connected to the slewing bearing column 21.
Further, referring to fig. 7, the rotary support column 21 has a rotary tapered groove 211, and the rotary tapered groove 211 is located on a side of the rotary support column 21 close to the tapered roller 222 and is matched with the tapered roller 222; the rolling guide 221 has a roller mounting groove 2211, and the roller mounting groove 2211 is located on one side of the rolling guide 221 close to the tapered roller 222 and is engaged with the tapered roller 222.
In this embodiment, the tapered roller 222 has two upper and lower arc-shaped surfaces, the top of the two arc-shaped surfaces is surrounded by a tapered top end, the bottom of the arc-shaped surfaces forms a circular ring, the outer side surface of the rolling guide rail 221 is fixed on the side wall of the hole at the top of the mounting seat 1 by bolts, the roller mounting groove 2211 is arranged on the inner side of the rolling guide rail 221, the roller mounting grooves 2211 are arranged on the circumference of the inner side wall of the rolling guide rail 221 and are vertically arranged in a plurality along the axial direction of the rolling guide rail 221, the number of the tapered rollers 222 is also multiple, and the tapered rollers 222 are sequentially mounted in the roller mounting grooves 2211 of the rolling guide rail 221; the outer side surface of the rotary supporting column 21 is provided with the rotary tapered grooves 211 matched with the tapered rollers 222, the number of the rotary tapered grooves 211 is the same as that of the roller mounting grooves 2211, and the tapered rollers 222 are arranged between the rotary tapered grooves 211 and the roller mounting grooves 2211, because the two arc-shaped side surfaces of the tapered rollers 222 are subjected to the lateral pressure of the rotary supporting column 21, the tapered rollers 222 can support the rotation of the rotary supporting column 21, the lateral deviation of the rotary supporting column 21 after being subjected to the gravity of a hoisting object in the hoisting process is avoided, and the deviation of the axis of the rotary supporting column 21 is avoided.
Further, referring to fig. 5, the rotation driving assembly 3 includes a transmission belt 31 and a rotation driving motor 32, one side of the transmission belt 31 is sleeved on the rotation supporting column 21, and the other side of the transmission belt 31 is sleeved on an output end of the rotation driving motor 32; the rotary driving motor 32 drives the transmission belt 31 to slide, and drives the rotary supporting column 21 to rotate.
Further, referring to fig. 5, the rotation driving motor 32 includes a motor housing 321, an output shaft 322, and a driving shaft sleeve 323, the motor housing 321 is mounted on the mounting base 1 through a bracket, the output shaft 322 is mounted at an output end of the motor housing 321, an inner side of the driving shaft sleeve 323 is sleeved on the output shaft 322, and an outer side of the driving shaft sleeve 323 is connected to the transmission belt 31.
In this embodiment, the transmission belt 31 is annular, one side of the transmission belt is sleeved on the rotation support column 21, the other side of the transmission belt is connected to the driving shaft sleeve 323 of the rotation driving motor 32, the bottom of the motor housing 321 is installed at the bottom of the cavity of the installation base 1, the output shaft 322 is installed at the top output end of the motor housing 321, the driving shaft sleeve 323 is sleeved at the free end of the output shaft 322, and the driving shaft sleeve 323 is matched with the inner side surface of the transmission belt 31, so that the output shaft 322 is driven to rotate by the motor housing 321, and the driving shaft sleeve 323 is further driven to rotate, thereby driving the rotation support column 21 to axially rotate, and realizing axial driving of the boom 4.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A cargo boom slewing device of a port crane is characterized by comprising a mounting seat, a slewing bearing assembly, a slewing drive assembly and a cargo boom;
the lifting arm rotates with the mounting seat through the slewing bearing assembly, and the slewing driving assembly is arranged on the mounting seat and drives the lifting arm to rotate;
the slewing bearing assembly comprises a slewing bearing column, a slewing rolling member, a connecting crankshaft, a crankshaft connecting rod and a damper, the slewing bearing column is rotatably arranged on the mounting seat through the slewing rolling member, the top of the slewing bearing column is fixedly provided with the crane boom, the bottom of the slewing bearing column extends into the mounting seat, the slewing rolling member supports the rotation of the slewing bearing column, one end of the connecting crankshaft is fixedly arranged on one side of the slewing bearing column extending into the mounting seat, the other end of the connecting crankshaft is rotatably connected with the mounting seat, one end of the crankshaft connecting rod is rotatably connected with the connecting crankshaft, the other end of the crankshaft connecting rod is connected with the damper, and the damper buffers the crankshaft connecting rod.
2. The boom slewing device of a harbor crane according to claim 1,
the connecting crankshaft comprises a rotary table connecting seat, a crankshaft body and a supporting seat, wherein the rotary table connecting seat is fixedly arranged on the rotary supporting column and is positioned on one side of the rotary supporting column extending into the mounting seat; the supporting seat is rotatably arranged on the mounting seat and is positioned on one side of the mounting seat close to the turntable connecting seat; the crankshaft body is arranged between the rotary table connecting seat and the supporting seat.
3. The boom slewing device of a harbor crane according to claim 2,
the crankshaft body comprises a first block body, a connecting shaft rod and a second block body, and the first block body is fixedly arranged on the turntable connecting seat and is positioned on one side, far away from the rotary supporting column, of the turntable connecting seat; the second block body is fixedly arranged on the supporting seat and is positioned on one side of the supporting seat close to the first block body; the connecting shaft is fixedly disposed between the first block and the second block.
4. The boom slewing device of a harbor crane according to claim 3,
the crankshaft connecting rod comprises a rotary bearing and a rod piece, and the rotary bearing is sleeved on the connecting shaft rod; one end of the rod piece is connected with the damper, the other end of the rod piece is connected with the slewing bearing, and the slewing bearing drives the rod piece to rotate.
5. The boom slewing device of a harbor crane according to claim 4, wherein,
the damper comprises a shell, a damping piston and a steering bearing, wherein the shell is fixedly connected with the mounting seat through a support and is arranged on one side, close to the rod piece, of the mounting seat; the damping piston is slidably mounted in the housing and compresses air in the housing; the steering bearing is rotatably arranged on the damping piston and connected with the rod piece to drive the rod piece and the damping piston to rotate.
6. The boom slewing device of a harbor crane according to claim 5, wherein,
the damping piston is provided with a bearing mounting groove, a notch of the bearing mounting groove is positioned at one side of the damping piston close to the steering bearing, and the steering bearing is mounted in the bearing mounting groove.
7. The boom slewing device of a harbor crane according to claim 1,
the rotary driving assembly comprises a transmission belt and a rotary driving motor, one side of the transmission belt is sleeved on the rotary supporting column, and the other side of the transmission belt is sleeved at the output end of the rotary driving motor; the rotary driving motor drives the transmission belt to slide and drives the rotary supporting column to rotate.
8. The boom slewing device of a harbor crane according to claim 7, wherein,
the rotary driving motor comprises a motor shell, an output shaft rod and a driving shaft sleeve, and the motor shell is arranged on the mounting seat through a bracket; the output shaft is mounted at the output end of the motor shell; the inner side of the driving shaft sleeve is sleeved on the output shaft rod, and the outer side of the driving shaft sleeve is connected with the transmission belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111086322.9A CN113526380B (en) | 2021-09-16 | 2021-09-16 | Cargo boom slewing device of port crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111086322.9A CN113526380B (en) | 2021-09-16 | 2021-09-16 | Cargo boom slewing device of port crane |
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| CN113526380A CN113526380A (en) | 2021-10-22 |
| CN113526380B true CN113526380B (en) | 2021-11-16 |
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| CN202111086322.9A Active CN113526380B (en) | 2021-09-16 | 2021-09-16 | Cargo boom slewing device of port crane |
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| CN115321387B (en) * | 2022-08-25 | 2023-12-29 | 广州市环深机电设备有限公司 | Stable rotary device of tower crane |
| CN117163854B (en) * | 2023-11-01 | 2024-01-02 | 美特信息科技(启东)有限公司 | Crane boom slewing device of port crane |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU594026A1 (en) * | 1976-10-22 | 1978-02-25 | Всесоюзный научно-исследовательский институт строительного и дорожного машиностроения | Self-propelle jib crane slewing mechanism |
| CN204588531U (en) * | 2015-01-20 | 2015-08-26 | 四川宏华石油设备有限公司 | A kind of knuckle hangs |
| CN206538117U (en) * | 2016-08-30 | 2017-10-03 | 河南省中原奥起实业有限公司 | A kind of folding-jib crane trouble free service mechanism |
| CN207861755U (en) * | 2018-02-12 | 2018-09-14 | 青岛宁泰鑫环保科技股份有限公司 | A kind of single-arm rotating workpiece is hung in place |
| CN208932844U (en) * | 2018-09-21 | 2019-06-04 | 福建省启航起重设备有限公司 | A kind of truck-mounted crane with shock-absorbing function |
-
2021
- 2021-09-16 CN CN202111086322.9A patent/CN113526380B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU594026A1 (en) * | 1976-10-22 | 1978-02-25 | Всесоюзный научно-исследовательский институт строительного и дорожного машиностроения | Self-propelle jib crane slewing mechanism |
| CN204588531U (en) * | 2015-01-20 | 2015-08-26 | 四川宏华石油设备有限公司 | A kind of knuckle hangs |
| CN206538117U (en) * | 2016-08-30 | 2017-10-03 | 河南省中原奥起实业有限公司 | A kind of folding-jib crane trouble free service mechanism |
| CN207861755U (en) * | 2018-02-12 | 2018-09-14 | 青岛宁泰鑫环保科技股份有限公司 | A kind of single-arm rotating workpiece is hung in place |
| CN208932844U (en) * | 2018-09-21 | 2019-06-04 | 福建省启航起重设备有限公司 | A kind of truck-mounted crane with shock-absorbing function |
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|---|---|
| CN113526380A (en) | 2021-10-22 |
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