CN218988638U - Crane cantilever - Google Patents
Crane cantilever Download PDFInfo
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- CN218988638U CN218988638U CN202320137602.6U CN202320137602U CN218988638U CN 218988638 U CN218988638 U CN 218988638U CN 202320137602 U CN202320137602 U CN 202320137602U CN 218988638 U CN218988638 U CN 218988638U
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- roller assembly
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Abstract
The utility model discloses a crane cantilever, which comprises a cantilever mechanism, a transmission mechanism, an amplitude changing mechanism and a lifting mechanism, wherein the cantilever mechanism comprises a cantilever track and a cantilever, and the cantilever track comprises a first track, a second track and a third track which are all arranged at one side of the cantilever; the transmission mechanism is arranged on the cantilever and comprises a chain wheel combination and a servo motor for driving the chain wheel combination to rotate; the amplitude variation mechanism is arranged on one side of the cantilever in a sliding way and is connected with the chain wheel in a combined way; the lifting mechanism is arranged on the amplitude changing mechanism; the horn can be moved in the length direction of the cantilever by activating the servo motor. According to the utility model, the lifting mechanism and the luffing mechanism of the traditional cantilever crane are arranged at the side from the original lower side direction of the cantilever structure, so that the space of the lifting height is effectively saved, the lifting height of the effective space is maximized, and the servo motor is used for driving the chain wheel, so that the accurate positioning of the length direction of the cantilever crane can be realized.
Description
Technical Field
The utility model relates to the technical field of cranes, in particular to a crane cantilever.
Background
The cantilever crane is a light lifting device which is suitable for modern production and is suitable for short distance, frequent and intensive lifting operation, has the characteristics of high efficiency, energy conservation, trouble saving, small occupied area, easy operation and maintenance and the like, but because of the limitation of space height, maximum lifting height and a cantilever lifting structure, the lifting height of the cantilever crane is more limited in a limited space, the space cannot be maximally utilized, and meanwhile, the accurate positioning of the length direction of the cantilever is difficult to realize, so that the cantilever structure of the cantilever crane needs to be designed.
Disclosure of Invention
Aiming at the technical defects, the utility model aims to provide a crane cantilever which can maximize the lifting height of a cantilever crane in a limited space and can realize accurate positioning of the length direction of the cantilever crane.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a crane jib, comprising:
the cantilever mechanism comprises a cantilever track and a cantilever, wherein the cantilever track comprises a first track, a second track and a third track, and the first track, the second track and the third track are all arranged on one side of the cantilever;
the transmission mechanism is arranged on the cantilever and comprises a chain wheel combination and a servo motor for driving the chain wheel combination to rotate;
the amplitude changing mechanism is arranged on one side of the cantilever in a sliding way and is connected with the chain wheel in a combined way;
the lifting mechanism is arranged on the amplitude changing mechanism;
the horn can be moved in the length direction of the cantilever by activating the servo motor.
Preferably, the sprocket assembly comprises two sprockets, chains arranged on the two sprockets, and two transmission shafts respectively correspondingly connected with the two sprockets;
the two transmission shafts are both rotatably arranged on the cantilever;
one end of the servo motor is connected with a speed reducer, and the other end of the speed reducer is connected with a transmission shaft through a coupler.
Preferably, the amplitude variation mechanism comprises a track connecting roller assembly, a chain connecting joint, a vertical plate, a cover plate and a reinforcing plate;
the track connecting roller assembly is arranged on the vertical plate and comprises a first track connecting roller assembly, a second track connecting roller assembly and a third track connecting roller assembly;
the first track connection roller assembly, the second track connection roller assembly and the third track connection roller assembly are respectively contacted with the first track, the second track and the third track.
Preferably, the first track connection roller assembly, the second track connection roller assembly and the third track connection roller assembly each comprise a connecting plate fixedly connected with the vertical plate and a plurality of rollers rotatably arranged on the connecting plate, and when the amplitude variation mechanism moves, the rollers of the first track connection roller assembly, the second track connection roller assembly and the third track connection roller assembly roll on the first track, the second track and the third track respectively.
Preferably, the axes of the rollers of the first track connection roller assembly and the third track connection roller assembly are perpendicular to the axes of the rollers of the second track connection roller assembly.
Preferably, the cover plate is fixedly arranged on one side of the top of the vertical plate and is flush with the top end of the cantilever mechanism, and a lifting mechanism is arranged on the lower side of the cover plate;
the vertical plates are connected with the cover plate through a plurality of reinforcing plates;
the chain connecting joint is arranged on the connecting plate of the third track connecting roller assembly and is connected with the chain.
Preferably, the first rail, the second rail and the third rail are parallel to each other, and the first rail is provided with a bending structure.
Preferably, one end of the cantilever is arranged on the upright post, and a slewing mechanism is arranged on the upright post.
The utility model has the beneficial effects that:
1. the lifting mechanism and the luffing mechanism of the traditional cantilever crane are arranged at the side from the original direction of the cantilever structure, so that the space of the lifting height is effectively saved, and the lifting height of the effective space is maximized;
2. a servo motor is used for driving a chain wheel, so that the amplitude variation mechanism moves upwards along the length direction of the arm body, the bidirectional movement of the amplitude variation mechanism is realized, and the amplitude variation mechanism can be accurately stopped at a certain required point.
3. The multiple groups of roller structures adopted by the amplitude variation mechanism are connected with the tracks of the cantilever structure, so that the resistance to movement along the length direction of the arm body is reduced, and the minimum loss of energy is realized.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a crane boom;
FIG. 2 is a schematic diagram of the cantilever structure;
FIG. 3 is a schematic illustration of a cantilever mechanism;
FIG. 4 is a schematic diagram of a transmission mechanism;
FIG. 5 is a schematic view of an amplitude variation mechanism.
Reference numerals illustrate:
11-cantilever, 111-first track, 112-second track, 113-third track;
21-chain wheels, 22-chains, 23-transmission shafts, 24-couplings, 25-servo motors and 26-speed reducers;
31-track connecting roller assemblies, 32-chain connecting joints, 33 vertical plates, 34-cover plates, 35-reinforcing plates, 311-first track connecting roller assemblies, 312-second track connecting roller assemblies, 313-third track connecting roller assemblies and 314-rollers;
41-upright post, 42-slewing mechanism.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-5, the utility model provides a crane cantilever, which mainly comprises a cantilever mechanism, a transmission mechanism, an amplitude changing mechanism, a lifting mechanism, a stand column 41 and the like, wherein the lifting mechanism is of an existing structure, and therefore, the description is omitted herein;
the cantilever mechanism is arranged on the upright post 41, the upright post 41 is also provided with a rotation mechanism 42, and the rotation mechanism 42 is of an existing structure, so that the description is omitted herein;
the crane cantilever in the prior art is shown in fig. 1 of the prior published patent 202211087891.X, the lifting mechanism is arranged at the lower side of the cantilever 11, the amplitude variation mechanism is arranged at one side of the cantilever 11, the lifting mechanism is positioned below the cover plate 34 of the amplitude variation mechanism, the cover plate 34 is fixedly arranged at one side of the top of the vertical plate 33 and is flush with the top end of the cantilever mechanism, and compared with the cantilever structure in the published patent, the height space is effectively saved, so that the lifting height of the effective space is maximized;
as shown in fig. 2 and 3, three mutually parallel tracks, namely a first track 111, a second track 112 and a third track 113, are arranged on the side surface of the cantilever mechanism, and are mainly used for installing the amplitude variation mechanism, and the first track 111 is provided with a bending structure for limiting the transverse movement of the roller; the bending structure is provided with a horizontal section and a vertical section, the gap between the vertical section and the cantilever 11 is larger than the diameter of the roller 314, and the second rail 112 mainly supports lifting load and is connected with the second rail connecting roller assembly 312; the third track 113 is provided with a transmission mechanism and is connected with a connecting plate of the third track connecting roller assembly 313;
as shown in fig. 2, 3 and 4, the transmission mechanism is arranged at two ends of the third track 113, the transmission mechanism mainly comprises a chain wheel 21, a chain 22, a transmission shaft 23, a coupler 24, a speed reducer 26 and a servo motor 25, the chain 22 is arranged on the two chain wheels 21, the two transmission shafts 23 are rotatably arranged on a cantilever, the two chain wheels 21 are respectively arranged on the two transmission shafts 23, one end of the speed reducer 26 is connected with the servo motor 25, and the other end is connected with the transmission shafts 23 through the coupler 24; the servo motor 25 drives one of the transmission shafts 23 to rotate through a speed reducer 26 and a coupler 24;
as shown in fig. 5, the luffing mechanism is slidably disposed on one side of the cantilever 11, and mainly comprises a track connection roller assembly 31, a chain connection joint 32, a vertical plate 33, a cover plate 34 and a reinforcing plate 35; the vertical plate 33 is connected with the cover plate 34 through a plurality of reinforcing plates 35; the chain connecting joint 32 is disposed on the connecting plate of the third rail connecting roller assembly 313 and connected with the chain 22;
when the device is used, the servo motor 25 drives the speed reducer 26 and the transmission shaft 23 to enable the chain wheel 21 to rotate, so that the variable amplitude mechanism is driven to move back and forth along the track in the length direction of the cantilever through the chain connecting joint 32;
in addition, the rail connecting roller assembly 31 is disposed on the vertical plate 33, and includes a first rail connecting roller assembly 311, a second rail connecting roller assembly 312, and a third rail connecting roller assembly 313; the first rail-connecting roller assembly 311, the second rail-connecting roller assembly 312, and the third rail-connecting roller assembly 313 are in contact with the first rail 111, the second rail 112, and the third rail 113, respectively;
specifically, the first track connecting roller assembly 311, the second track connecting roller assembly 312 and the third track connecting roller assembly 313 each include a connecting plate fixedly connected with the vertical plate 33 and a plurality of rollers 314 rotatably arranged on the connecting plate, and when the luffing mechanism moves, the rollers 314 of the first track connecting roller assembly 311, the second track connecting roller assembly 312 and the third track connecting roller assembly 313 roll on the first track 111, the second track 112 and the third track 113 respectively;
the first rail connecting roller assembly 311 and the second rail connecting roller assembly 312 are connected and are arranged between the first rail 111 and the second rail 112;
in order to improve the stability of the movement of the amplitude variation mechanism, at least two rollers 314 are arranged on each connecting plate, namely: the connecting plate of the first track connecting roller assembly 311 is provided with two rollers 314 which are transversely arranged, the connecting plate of the second track connecting roller assembly 312 is provided with 4 rollers 314 which are longitudinally arranged, the connecting plate of the third track connecting roller assembly is provided with two rollers 314 which are transversely arranged, and the axial lines of the rollers 314 of the first track connecting roller assembly 311 and the third track connecting roller assembly 313 are perpendicular to the axial line of the roller 314 of the second track connecting roller assembly 312;
it will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A crane jib, comprising:
the cantilever mechanism comprises a cantilever track and a cantilever (11), wherein the cantilever track comprises a first track (111), a second track (112) and a third track (113), and the first track, the second track and the third track are arranged on one side of the cantilever (11);
the transmission mechanism is arranged on the cantilever (11) and comprises a chain wheel combination and a servo motor (25) for driving the chain wheel combination to rotate;
the amplitude changing mechanism is arranged on one side of the cantilever (11) in a sliding manner and is connected with the chain wheel in a combined manner;
the lifting mechanism is arranged on the amplitude changing mechanism;
the actuator can be moved in the longitudinal direction of the cantilever (11) by activating the servo motor (25).
2. A crane jib according to claim 1, characterized in that the sprocket combination comprises two sprockets (21), a chain (22) mounted on the two sprockets (21), two drive shafts (23) connected to the two sprockets (21) respectively;
the two transmission shafts (23) are both rotatably arranged on the cantilever (11);
one end of the servo motor (25) is connected with a speed reducer (26), and the other end of the speed reducer (26) is connected with a transmission shaft (23) through a coupler (24).
3. A crane jib according to claim 1 wherein the luffing mechanism comprises a rail-mounted roller assembly (31), a chain-mounted joint (32), a riser (33), a cover plate (34) and a stiffening plate (35);
the track connecting roller assembly (31) is arranged on the vertical plate (33) and comprises a first track connecting roller assembly (311), a second track connecting roller assembly (312) and a third track connecting roller assembly (313);
the first rail connection roller assembly (311), the second rail connection roller assembly (312) and the third rail connection roller assembly (313) are respectively contacted with the first rail (111), the second rail (112) and the third rail (113).
4. A crane jib according to claim 3, characterized in that the first rail-connected roller assembly (311), the second rail-connected roller assembly (312) and the third rail-connected roller assembly (313) each comprise a connecting plate fixedly connected to a riser (33) and a number of rollers (314) rotatably arranged on the connecting plate, the rollers (314) of the first rail-connected roller assembly (311), the second rail-connected roller assembly (312) and the third rail-connected roller assembly (313) rolling on the first rail (111), the second rail (112) and the third rail (113), respectively, when the luffing mechanism is moved.
5. A crane jib according to claim 3, characterized in that the axes of the rollers (314) of the first rail-connected roller assembly (311) and the third rail-connected roller assembly (313) are perpendicular to the axis of the rollers (314) of the second rail-connected roller assembly (312).
6. A crane jib according to claim 3, characterized in that the cover plate (34) is fixedly arranged on one side of the top of the riser (33) and is flush with the top of the jib mechanism, and that the underside of the cover plate (34) is provided with a lifting mechanism;
the vertical plates (33) are connected with the cover plate (34) through a plurality of reinforcing plates (35);
the chain connecting joint (32) is arranged on a connecting plate of the third rail connecting roller assembly (313) and is connected with the chain (22).
7. A crane jib according to claim 1, characterized in that the first rail (111), the second rail (112) and the third rail (113) are parallel to each other, the first rail (111) being provided with a bending structure.
8. A crane jib according to claim 1, characterized in that one end of the jib (11) is arranged on a column (41), and that the column (41) is provided with a slewing mechanism (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320137602.6U CN218988638U (en) | 2023-01-29 | 2023-01-29 | Crane cantilever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320137602.6U CN218988638U (en) | 2023-01-29 | 2023-01-29 | Crane cantilever |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218988638U true CN218988638U (en) | 2023-05-09 |
Family
ID=86221156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320137602.6U Active CN218988638U (en) | 2023-01-29 | 2023-01-29 | Crane cantilever |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218988638U (en) |
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2023
- 2023-01-29 CN CN202320137602.6U patent/CN218988638U/en active Active
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