CN217458744U - Portal crane with manned trolley - Google Patents
Portal crane with manned trolley Download PDFInfo
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- CN217458744U CN217458744U CN202221466747.2U CN202221466747U CN217458744U CN 217458744 U CN217458744 U CN 217458744U CN 202221466747 U CN202221466747 U CN 202221466747U CN 217458744 U CN217458744 U CN 217458744U
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Abstract
The utility model discloses a manned trolley gantry crane belongs to hoisting equipment and building technical field, manned trolley gantry crane, which comprises a bod, the top fixed mounting of organism has actuating mechanism, and the inside of organism is provided with the manned cage of liftable, the top of manned cage is provided with the running block, and the running block includes two pulleys that set up in manned cage top both sides, be connected with wire rope between running block and the actuating mechanism. The hoist in this embodiment is provided with two pulleys through the top at manned cage to can be so that at wire rope lift in-process, have tension between the wire rope, thereby avoid manned cage rotatory at the in-process that lifts by crane, make wire rope fracture.
Description
Technical Field
The utility model relates to a hoisting equipment and building technical field specifically are manned dolly gantry crane.
Background
In recent years, the domestic hoisting industry has more and more demands on the cranes for carrying people in special environments; the special manned system in the crane control system of production at present is few, considers the manned reliability of hoist and security, and is different with the requirement of general lift by crane article, necessarily attaches more attention to manned system design to the hoist, and the cage is one kind and can replaces traditional scaffold frame, alleviates intensity of labour, improves work efficiency to can used repeatedly's novel aerial work equipment. The use of man-carrying trolleys for lifting has gradually become a trend, and the man-carrying trolleys are widely accepted in the operations of high-altitude construction, installation, maintenance, cleaning and the like, and can be used for the operations of buildings, large-scale tank bodies, bridges, dams and other projects. The cage is used for carrying people or objects, the construction cost is only 28% of that of the traditional scaffold due to the fact that the scaffold can be avoided, operation is flexible, and working efficiency is greatly improved. However, the conventional suspension cage is easy to rotate in the lifting process, so that the steel wire rope is continuously rotated and wound, and if the steel wire rope cannot be loosened in time, the steel wire rope has the possibility of being broken.
Therefore, in view of the above-mentioned problems, there is a need for a crane apparatus that does not cause rotation of the cage during hoisting.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a manned trolley gantry crane, this hoist avoid the cage to take place to rotate at the in-process of hoisting through the assembly pulley, improve hoist wire rope's life to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
manned trolley portal crane, including the organism, the top fixed mounting of organism has actuating mechanism, and the inside of organism is provided with the manned cage of liftable, the top of manned cage is provided with the running block, and the running block includes two pulleys that set up in manned cage top both sides, be connected with wire rope between running block and the actuating mechanism.
As a further aspect of the present invention: the driving mechanism comprises a shell fixedly installed at the top of the machine body, a variable frequency motor is fixedly installed inside the shell, a connecting gear is fixedly installed on an output shaft of the variable frequency motor, a gear set is meshed with one side of the connecting gear, and a winding drum is coaxially connected to the gear set.
As a further aspect of the present invention: the number of the winding drums is two, and the winding drums rotate along with the variable frequency motor through the gear set.
As a further aspect of the present invention: the steel wire rope penetrates through one end of the movable pulley and is wound on the winding drum, the other end of the steel wire rope is fixedly installed on the machine body, and the other end of the steel wire rope is provided with a limiter which can limit the manned suspension cage.
As a further aspect of the present invention: the driving mechanism is characterized in that a low-speed shaft safety brake is fixedly mounted in the driving mechanism on the end face far away from the variable frequency motor, and the low-speed shaft safety brake is in contact with the gear set.
As the utility model discloses further scheme again: and a hydraulic brake is assembled on an output shaft of the variable frequency motor.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the hoist in this embodiment is provided with two pulleys through the top at manned cage to can be so that at wire rope lift in-process, have tension between the wire rope, thereby avoid manned cage rotatory at the in-process that lifts by crane, make wire rope fracture.
2. In the embodiment, the variable frequency motor rotates to drive the open gear a to rotate, the open gear a rotates to drive the open gear b and the open gear c to synchronously rotate, the radii of the open gear b and the open gear c are kept consistent, so that the winding drum rotating speeds of two sides are the same, the winding and releasing of the steel wire rope can be realized through the rotation of the winding drum in the hoisting process, and the effect of lifting the manned suspension cage is achieved.
3. The hoist in this embodiment corresponds different pulleys respectively through being provided with two reels, after having solved the problem of avoiding wire rope winding, the effect of duplicate protection also can be played in the design of two reels simultaneously, after one of them rope fracture, and another rope also can play the guard action, can not make hoist (manned cage) drop.
Drawings
FIG. 1 is a front view of a crane structure of the present invention;
FIG. 2 is a top view of the crane structure of the present invention;
fig. 3 is a side view of the structure of the middle crane of the present invention.
The corresponding relationship between the reference numbers of the figures and the names of the components in the figures is as follows:
1. a body; 2. a drive mechanism; 21. a variable frequency motor; 211. a speed reducer; 22. a gear set; 23. a hydraulic brake; 24. a low speed shaft safety brake; 3. a manned cage; 4. a movable pulley block; 5. a reel; 6. a steel cord.
Detailed Description
Please refer to fig. 1 to 3, which are schematic plane structural diagrams of a crane, and a hoisting structure in the prior art is adopted to realize the lifting of the man-carrying cage 3, on the basis of the prior art, the crane includes a machine body 1, a driving mechanism 2 is fixedly installed at the top of the machine body 1, a supporting mechanism is fixedly installed at the bottom of the machine body 1, the stability of the machine body 1 during operation can be improved under the action of the supporting mechanism, the liftable man-carrying cage 3 is arranged inside the machine body 1, a movable pulley block 4 is arranged at the top of the man-carrying cage 3, the pulleys are assembled at the left and right sides of the man-carrying cage 3, the two pulleys are symmetrically distributed, and a steel wire rope 6 is connected between the movable pulley block 4 and the driving mechanism 2.
In this embodiment, two pulleys are arranged at the top of the manned cage 3, so that tension is generated between the steel wire ropes 6 in the hoisting process of the steel wire ropes 6, and the manned cage 3 is prevented from rotating in the hoisting process, so that the steel wire ropes 6 are broken.
Wherein, the driving mechanism 2 comprises a shell fixedly installed at the top of the machine body 1, a variable frequency motor 21 is fixedly installed inside the shell, a connecting gear is fixedly installed on an output shaft of the variable frequency motor 21, an open gear a is engaged and connected to one side of the connecting gear, an open gear b is engaged and connected to the other side of the open gear a, an open gear c is engaged and connected to one side of the open gear b far away from the open gear a, winding drums 5 are coaxially connected to the open gear b and the open gear c, and a steel wire rope 6 is wound on the winding drums 5, in the embodiment, the variable frequency motor 21 is controlled to rotate by an external power supply, the variable frequency motor 21 rotates to drive the open gear a to rotate, the open gear b and the open gear c are driven to synchronously rotate in the rotating process of the open gear a, the radiuses of the open gear b and the open gear c are kept consistent, so that the rotating speeds of the winding drums 5 at two sides are the same, in the hoisting process, the winding and releasing of the steel wire rope 6 can be realized through the rotation of the winding drum 5, so that the effect of lifting the manned suspension cage 3 is achieved.
It is worth noting that the gear set 22 comprises an open gear a, an open gear b and an open gear c, a speed reducer 211 is arranged on an output shaft of the variable frequency motor 21 to control the rotating speed of the variable frequency motor 21, and a hydraulic brake 23 is further arranged on the output shaft of the variable frequency motor 21 to make the braking of the variable frequency motor more stable.
In this embodiment, through being provided with two reels 5, correspond different pulleys respectively, after having solved the problem of avoiding wire rope 6 twines, the effect of duplicate protection also can be played in the design of two reels 5 simultaneously, after one of them rope fracture, a rope also can play the guard action in addition, can not make hoist (manned cage 3) drop.
One end of a steel wire rope 6 is wound on the winding drum 5, the other end of the steel wire rope is provided with a limiting stopper, the upper height and the lower height of the manned suspension cage 3 can be limited by the installation of the limiting stopper, and the large trolley can run safely and reliably within a limited range.
Actuating mechanism 2 includes low-speed axle safety brake 24, and low-speed axle safety brake 24 contacts with open gear c, under low-speed axle safety brake 24's effect, can ensure open gear c safety and stability's braking, and the number of low-speed axle safety brake 24 in this embodiment is two, acts on both sides around open gear c respectively, through open gear c's braking, can realize the safety braking to whole actuating mechanism 2.
The working principle is as follows: when using, start inverter motor 21 through external power supply, inverter motor 21 rotates gear train 22 and rotates, gear train 22 rotates and to drive corresponding reel 5 and rotate, because gear train 22's design, reel 5 can rotate in actuating mechanism 2's inside is synchronous, when reel 5 rotates, can carry out the rolling to wire rope 6's one end, thereby wire rope 6's length shrink, can carry out the lifting to manned cage 3 of wire rope 6 below, when reel 5 reverses, wire rope 6's length is elongated, manned cage 3 can descend, thereby realized the effect of hoist lift manned cage 3.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. Manned trolley gantry crane, including organism (1), the top fixed mounting of organism (1) has actuating mechanism (2), and the inside of organism (1) is provided with manned cage (3) of liftable, its characterized in that, the top of manned cage (3) is provided with running block (4), and running block (4) includes two pulleys that set up in manned cage (3) top both sides, be connected with wire rope (6) between running block (4) and actuating mechanism (2).
2. Portal crane with manned trolleys according to claim 1, characterized in that the driving mechanism (2) comprises a housing fixedly mounted on the top of the machine body (1), a variable frequency motor (21) is fixedly mounted inside the housing, a connecting gear is fixedly mounted on the output shaft of the variable frequency motor (21), a gear set (22) is connected to one side of the connecting gear in a meshed manner, and a winding drum (5) is coaxially connected to the gear set (22).
3. Gantry crane according to claim 2, characterized in that there are two reels (5), and the reels (5) are rotated together with the inverter motor (21) via a gear train (22).
4. Portal crane with manned trolleys according to claim 1 or 3, characterized in that the steel cable (6) passes through one end of the movable pulley and is wound on the winding drum (5), the other end of the steel cable is fixedly mounted on the machine body (1), and the other end of the steel cable (6) is provided with a stopper capable of limiting the manned cage (3).
5. Gantry crane according to claim 2, characterised in that the drive mechanism (2) is internally fixed with a low-speed shaft safety brake (24) on the end face remote from the variable-frequency motor (21), the low-speed shaft safety brake (24) being in contact with the gear train (22).
6. Portal crane according to claim 2, characterised in that the output shaft of the variable-frequency motor (21) is equipped with a hydraulic brake (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221466747.2U CN217458744U (en) | 2022-06-13 | 2022-06-13 | Portal crane with manned trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221466747.2U CN217458744U (en) | 2022-06-13 | 2022-06-13 | Portal crane with manned trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217458744U true CN217458744U (en) | 2022-09-20 |
Family
ID=83236905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221466747.2U Active CN217458744U (en) | 2022-06-13 | 2022-06-13 | Portal crane with manned trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217458744U (en) |
-
2022
- 2022-06-13 CN CN202221466747.2U patent/CN217458744U/en active Active
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