A rotatable two-point suspension crane trolley

Abstract

The utility model discloses a rotatable double-hoisting-point crane trolley, including lower layer operation trolley, including operation trolley frame, set up in the annular track of operation trolley frame top surface and set up in the translation drive part of operation trolley frame bottom, translation drive part is used for driving operation trolley frame moves along the horizontal direction, upper layer rotary trolley sets up in the upper layer of lower layer operation trolley, including rotary trolley frame and set up in the rotary drive part of rotary trolley frame, and rotary drive part is connected with annular track, is used for driving rotary trolley frame rotates in situ above annular track, hoist mechanism sets up in rotary trolley frame, including synchronous lifting's lifting hook no.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a rotatable double-lifting-point crane trolley. Background Technology

[0002] Currently, cranes are being used more and more widely; for example, cranes are needed to move and stack containers at port terminals or container yards.

[0003] During the transfer process, the orientation of the container needs to be adjusted, but conventional cranes cannot perform this function. It is necessary to use a forklift or a non-standard electrically controlled rotating hook. Using a forklift makes the adjustment process cumbersome and less safe, while developing a non-standard electrically controlled rotating hook results in a large investment cost. Due to the large size of the container, the industry currently uses two independent lifting mechanisms to lift the container. However, in order to ensure the smooth lifting of the workpiece, it is necessary to synchronize the electrical control of the two lifting mechanisms. This also leads to a large investment in electrical control and makes subsequent maintenance inconvenient. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a rotatable double-lifting-point crane trolley to solve the problems of inconvenience in rotating existing crane trolleys and difficulty in synchronizing the two sets of lifting mechanisms.

[0005] This utility model provides a rotatable double-lifting-point crane trolley, comprising:

[0006] The lower-level trolley includes a trolley frame, an annular track disposed on the top surface of the trolley frame, and a translation drive component disposed at the bottom of the trolley frame. The translation drive component is used to drive the trolley frame to move horizontally.

[0007] An upper rotating trolley is positioned above the lower running trolley and includes a rotating trolley frame and a rotating drive unit mounted on the rotating trolley frame. The rotating drive unit is connected to the annular track and is used to drive the rotating trolley frame to rotate in place above the annular track.

[0008] The lifting mechanism, mounted on the rotating trolley frame, includes a first hook and a second hook that can be raised and lowered synchronously, used to drive the device to be lifted to rise or fall.

[0009] Furthermore, the translation drive includes four sets of wheels arranged in a rectangular shape at the bottom of the running trolley frame, and each wheel is connected to a drive motor that drives its rotation.

[0010] Furthermore, the rotating trolley frame includes crossbeams and end beams, with the end beams fixedly connected to both ends of the two parallel crossbeams respectively;

[0011] The rotating drive component includes two wheels. The ends of the two end beams are each provided with one of the two wheels. The four sets of two wheels are located at the four vertices of the inscribed quadrilateral of the circular track and are all rolledly connected to the circular track. Each wheel is connected to a drive motor that drives its rotation.

[0012] Furthermore, mounting covers are fixedly provided at both ends of the end beam, the second wheel is disposed inside the mounting cover, a mounting frame is fixedly provided at the end of the mounting cover away from the end beam, and a guide wheel is rotatably provided on the mounting frame;

[0013] The annular track protrudes from the top surface of the running trolley frame, the second wheel is in rolling connection with the top surface of the annular track, and the guide wheel is in rolling connection with the inner side wall of the annular track.

[0014] Furthermore, the lifting mechanism also includes a drum, a fixed pulley, and a third drive motor. The drum is rotatably mounted on one end of the rotating trolley frame via a first bracket, and the fixed pulley is rotatably mounted on the other end of the rotating trolley frame via a second bracket. The third drive motor is connected to one end of the drum to drive the drum to rotate. One end of the drum is wound with a first lifting rope, and the other end is wound with a second lifting rope. The free end of the first lifting rope is connected to a first hook, and the free end of the second lifting rope is guided by the fixed pulley and then connected to a second hook. The first hook and the second hook are located in the same horizontal plane.

[0015] Furthermore, auxiliary rotating shafts are provided on the outer sides of both ends of the drum. The axis of the auxiliary rotating shaft is parallel to the axis of the drum, and the outer wall of the auxiliary rotating shaft is in contact with the corresponding suspension rope one or suspension rope two wound on the drum.

[0016] Furthermore, the running trolley frame has a corresponding circular through groove wound on the drum. The circular through groove is coaxial with the annular track. An annular sliding line is laid on the inner wall of the circular through groove. A current collector is provided on the rotating trolley frame. The current collector slides against the annular sliding line and is used to supply power to the second and third drive motors.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) This utility model includes a lower running trolley, an upper rotating trolley and a lifting mechanism. The top of the upper running trolley is provided with a ring track. The upper rotating trolley includes a rotating trolley frame and a rotating drive component. The rotating drive component is connected to the ring track and can drive the rotating trolley frame to rotate in place above the ring track. While the rotating trolley frame is rotating, it can drive the lifting mechanism to rotate, thereby adjusting the direction of the container being lifted. The structure of this application is stable and does not require the use of a forklift. The rotation adjustment process is more convenient.

[0019] (2) The lifting mechanism of this utility model includes a set of drums and a set of drive motors. A lifting rope 1 and a lifting rope 2 are wound on the same set of drums. The lifting rope 1 is connected to a lifting hook 1, and the lifting rope 2 is connected to a lifting hook 2 after being guided by a fixed pulley. The lifting hook 1 and the lifting hook 2 are located in the same horizontal plane. This application adopts a single drum double rope structure. During the rotation of the drum, the lifting rope 1 and the lifting rope 2 are wound or unwound synchronously, so that the lifting hook 1 and the lifting hook 2 move synchronously. From the mechanical structure, it is guaranteed that the lifting hook 1 and the lifting hook 2 rise or fall synchronously. Compared with the synchronous lifting action achieved by electrical control, this application has a simple structure and lower manufacturing cost. Due to the fewer parts, the processing and assembly process is relatively simple, there are fewer failure points, and the later maintenance is relatively simple and convenient, which reduces the maintenance cost.

[0020] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;

[0024] Figure 3 This is a schematic diagram of the structure of the lower-level running trolley in this utility model;

[0025] Figure 4 This is a structural schematic diagram of the upper rotating trolley and the lifting mechanism in this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the annular track, the second wheel, and the guide wheel in this utility model;

[0027] Figure 6This is a schematic diagram of the structure of the drum and auxiliary rotating shaft in this utility model;

[0028] The diagram labels are: 1. Lower-level moving trolley; 2. Upper-level rotating trolley; 3. Lifting mechanism; 4. Circular sliding line;

[0029] 11. Running trolley frame; 12. Circular track; 13. Translation drive component;

[0030] 21. Rotating trolley frame; 22. Rotating drive component; 23. Mounting cover; 24. Mounting bracket; 25. Guide wheel;

[0031] 31. Hook 1; 32. Hook 2; 33. Drum; 34. Fixed pulley; 35. Drive motor 3; 36. Auxiliary shaft;

[0032] 131. Wheel One;

[0033] 211. Crossbeam; 212. End beam;

[0034] 221. Wheel Two. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0036] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] Please refer to Figures 1-6 An embodiment of this utility model provides a rotatable double-lifting-point crane trolley, comprising:

[0038] The lower-level running trolley 1 includes a running trolley frame 11, an annular track 12 disposed on the top surface of the running trolley frame 11, and a translation drive 13 disposed on the bottom of the running trolley frame 11. The translation drive 13 is used to drive the running trolley frame 11 to move in the horizontal direction.

[0039] The upper rotating trolley 2 is located above the lower running trolley 1 and includes a rotating trolley frame 21 and a rotating drive component 22 mounted on the rotating trolley frame 21. The rotating drive component 22 is connected to the annular track 12 and is used to drive the rotating trolley frame 21 to rotate in place above the annular track 12.

[0040] The lifting mechanism 3 is mounted on the rotating trolley frame 21 and includes a first hook 31 and a second hook 32 that can be raised and lowered synchronously, used to drive the device to be lifted to rise or fall.

[0041] In this embodiment, the lower running trolley 1 is mounted on the main beam of the crane, and the translation drive 13 can drive the running trolley frame 11 to move along the length of the main beam to achieve horizontal displacement.

[0042] When hoisting a container, the lower trolley 1 is moved horizontally by the translation drive 13, so that the lower trolley 1 moves directly above the container or to another suitable position. Then, the lifting mechanism 3 is activated, and the container is hoisted and fixed by the first hook 31 and the second hook 32. Then, the lifting mechanism 3 and the translation drive 13 are activated again to lift and move the container horizontally. During the hoisting process, the rotating trolley frame 21 can be driven to rotate in place above the circular track 12 by the rotation drive 22. The rotating trolley frame 21 can rotate 360°. The lifting mechanism 3 is set on the rotating trolley frame 21. The rotation of the rotating trolley frame 21 can drive the lifting mechanism 3 to rotate synchronously, thereby adjusting the direction of the container being hoisted. The structure of this application is stable and does not require the use of a forklift. The rotation adjustment process is more convenient.

[0043] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the translation drive unit 13 includes four sets of wheels 131 arranged in a rectangular shape at the bottom of the running trolley frame 11. Each wheel 131 is connected to a drive motor that drives it to rotate.

[0044] Specifically, all four sets of wheels 131 are drive wheels, and the wheels 131 are selected with double-sided flanges; a straight track is set on the main beam of the crane, and the four sets of wheels 131 are rolledly connected to the straight track to realize the translation of the running trolley frame 11.

[0045] In a preferred embodiment, such as Figure 1 and Figure 5 As shown, the rotating trolley frame 21 includes a crossbeam 211 and an end beam 212, with the two ends of the two parallel crossbeams 211 respectively fixedly connected to the end beam 212.

[0046] The rotating drive component 22 includes wheels 221. Wheels 221 are provided at the ends of the two end beams 212. The four sets of wheels 221 are located at the four vertices of the inscribed quadrilateral of the circular track 12 and are all in rolling connection with the circular track 12. The wheels 221 are connected to a drive motor 2 that drives them to rotate.

[0047] In this embodiment, the four sets of wheels 221 are arranged in a rectangular shape, and all four sets of wheels 221 are drive wheels and are all connected to the circular track 12 in a rolling manner. The wheels 221 are driven to rotate by the drive motor 2, so that the rotating trolley frame 21 performs a circular rotation along the circular track 12.

[0048] In a preferred embodiment, such as Figure 1 , Figure 3 and Figure 5 As shown, mounting covers 23 are fixedly installed at both ends of the end beam 212, and wheel 221 is installed inside the mounting cover 23. A mounting frame 24 is fixedly installed at the end of the mounting cover 23 away from the end beam 212, and a guide wheel 25 is rotatably installed on the mounting frame 24.

[0049] The annular track 12 protrudes from the top surface of the running trolley frame 11, the second wheel 221 is in rolling connection with the top surface of the annular track 12, and the guide wheel 25 is in rolling connection with the inner side wall of the annular track 12.

[0050] In this embodiment, wheel 221 is disposed inside mounting cover 23, which protects wheel 221 and provides mounting support for drive motor 2.

[0051] When the second drive motor drives the second wheel 221 to rotate, the rotating trolley frame 21 moves in a circle along the top surface of the circular track 12. At the same time, the guide wheel 25 rotates in contact with the inner circle of the circular track 12 to guide the operation of the rotating trolley frame 21 and prevent the rotating trolley frame 21 from deviating laterally.

[0052] It should be noted that the rotating trolley frame 21 is also equipped with an anti-detachment hook (not shown in the figure). One end of the anti-detachment hook is connected to the mounting cover 23 through a mounting ring, and the other end is slidably connected to the outer ring of the circular track 12 to prevent the rotating trolley frame 21 from detaching from the running trolley frame 11 when encountering bumps. The anti-detachment hook adopts the existing commonly used anti-detachment hook structure, which will not be described in detail here.

[0053] In a preferred embodiment, such as Figure 1 , Figure 4 and Figure 6 As shown, the lifting mechanism 3 also includes a drum 33, a fixed pulley 34, and a drive motor 35. The drum 33 is rotatably mounted on one end of the rotating trolley frame 21 via a bracket 1, and the fixed pulley 34 is rotatably mounted on the other end of the rotating trolley frame 21 via a bracket 2. The drive motor 35 is connected to one end of the drum 33 and is used to drive the drum 33 to rotate. One end of the drum 33 is wound with a lifting rope 1, and the other end is wound with a lifting rope 2. The free end of the lifting rope 1 is connected to a hook 1 31, and the free end of the lifting rope 2 is guided by the fixed pulley 34 and connected to a hook 2 32. The hook 1 31 and the hook 2 32 are located in the same horizontal plane.

[0054] In this embodiment, two sets of lifting ropes, namely, lifting rope one and lifting rope two, are wound on the same set of drums 33. One end of lifting rope one is fixedly connected to drum 33, and the other end passes over the movable pulley on hook one 31 and is fixedly connected to the fixed end. One end of lifting rope two is fixedly connected to drum 33, and the other end passes over the movable pulley on fixed pulley 34 and hook two 32 in sequence and is fixedly connected to the fixed end, so that hook one 31 and hook two 32 are located in the same horizontal plane.

[0055] When lifting a container, it is hoisted and secured by hook 31 and hook 32. The large span between hook 31 and hook 32 ensures stable lifting of the container. Drive motor 35 drives drum 33 to rotate. During the rotation of drum 33, lifting rope 1 and lifting rope 2 are wound or unwound synchronously, so that hook 31 and hook 32 move synchronously. From a mechanical structure perspective, this ensures that hook 31 and hook 32 rise or fall synchronously, achieving synchronous control of the two lifting points.

[0056] This application adopts a single drum double rope structure. Compared with synchronous lifting action achieved through electrical control, this application has a simpler structure and lower manufacturing cost. Due to fewer parts, the processing and assembly process is relatively simple, there are fewer failure points, and the later maintenance is also relatively simple and convenient, thus reducing maintenance costs.

[0057] In a preferred embodiment, such as Figure 6 As shown, auxiliary rotating shafts 36 are provided on the outer sides of both ends of the drum 33. The axis of the auxiliary rotating shafts 36 is parallel to the axis of the drum 33, and the outer wall of the auxiliary rotating shafts 36 is in contact with the corresponding suspension rope one or suspension rope two wound on the drum 33.

[0058] Specifically, during winding or unwinding, both the first and second lifting ropes come into contact with the outer wall of the corresponding auxiliary shaft 36. The auxiliary shaft 36 serves as a limiting and guiding mechanism, allowing the first or second lifting rope to be neatly arranged on the drum 33.

[0059] In a preferred embodiment, such as Figure 3 As shown, a circular through groove is provided on the running trolley frame 11 within the area surrounded by the annular track 12. The circular through groove is coaxial with the annular track 12. An annular sliding line 4 is laid on the inner wall of the circular through groove. A collector is provided on the rotating trolley frame 21. The collector is slidably connected to the annular sliding line 4 and is used to supply power to drive motor 2 and drive motor 35.

[0060] In this embodiment, when the rotating trolley frame 21 rotates along the annular track 12, the current collector runs synchronously with the rotating trolley frame 21 and obtains power from the annular sliding line 4, thereby continuously supplying power to the second and third drive motors 35, so that the rotating trolley frame 21 and the lifting mechanism 3 can be continuously powered and operated.

[0061] Working principle:

[0062] When hoisting a container, the lower trolley 1 is moved horizontally by the translation drive 13, so that the lower trolley 1 moves directly above the container or to another suitable position. Then, the lifting mechanism 3 is activated, and the container is hoisted and fixed by hook 1 31 and hook 2 32. Then, the lifting mechanism 3 and the translation drive 13 are activated again to lift and move the container horizontally. During the hoisting process, the rotating trolley frame 21 can be driven to rotate in place above the circular track 12 by the rotation drive 22. The lifting mechanism 3 is set on the rotating trolley frame 21. The rotation of the rotating trolley frame 21 can drive the lifting mechanism 3 to rotate synchronously, thereby adjusting the direction of the container being hoisted. The structure of this application is stable and does not require the use of a forklift. The rotation adjustment process is more convenient. Moreover, this application adopts a single drum double rope structure. Compared with synchronous lifting action achieved by electrical control, the manufacturing cost of this application is lower. Due to fewer parts, the processing and assembly process is relatively simple, there are fewer failure points, and the later maintenance is also relatively simple and convenient, reducing maintenance costs.

[0063] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rotatable double-lifting-point crane trolley, characterized in that, include: The lower-level running trolley (1) includes a running trolley frame (11), an annular track (12) disposed on the top surface of the running trolley frame (11), and a translation drive (13) disposed on the bottom of the running trolley frame (11). The translation drive (13) is used to drive the running trolley frame (11) to move in the horizontal direction. The upper rotating trolley (2) is located above the lower running trolley (1) and includes a rotating trolley frame (21) and a rotating drive unit (22) located on the rotating trolley frame (21). The rotating drive unit (22) is connected to the annular track (12) and is used to drive the rotating trolley frame (21) to rotate in place above the annular track (12). The lifting mechanism (3) is mounted on the rotating trolley frame (21) and includes a first hook (31) and a second hook (32) that can be raised and lowered synchronously, for driving the device to be lifted to rise or fall.

2. The rotatable double-lifting-point crane trolley according to claim 1, characterized in that, The translation drive (13) includes four sets of wheels (131) arranged in a rectangular shape at the bottom of the running trolley frame (11), and each wheel (131) is connected to a drive motor that drives it to rotate.

3. The rotatable double-lifting-point crane trolley according to claim 1, characterized in that, The rotating trolley frame (21) includes a crossbeam (211) and an end beam (212), with the end beam (212) fixedly connected to both ends of the two parallel crossbeams (211); The rotary drive component (22) includes two wheels (221). Each end of the two end beams (212) is provided with a number of two wheels (221). The four sets of two wheels (221) are located at the four vertices of the inscribed quadrilateral of the circular track (12) and are all rolledly connected to the circular track (12). Each two wheels (221) is connected to a drive motor (2) that drives its rotation.

4. A rotatable double-lifting-point crane trolley according to claim 3, characterized in that, The two ends of the end beam (212) are fixedly provided with mounting covers (23), the second wheel (221) is provided inside the mounting cover (23), the end of the mounting cover (23) away from the end beam (212) is fixedly provided with a mounting frame (24), and a guide wheel (25) is rotatably provided on the mounting frame (24); The annular track (12) protrudes from the top surface of the running trolley frame (11), the second wheel (221) is in rolling connection with the top surface of the annular track (12), and the guide wheel (25) is in rolling connection with the inner side wall of the annular track (12).

5. A rotatable double-lifting-point crane trolley according to claim 3, characterized in that, The lifting mechanism (3) further includes a drum (33), a fixed pulley (34), and a drive motor (35). The drum (33) is rotatably mounted on one end of the rotating trolley frame (21) via a bracket (1). The fixed pulley (34) is rotatably mounted on the other end of the rotating trolley frame (21) via a bracket (2). The drive motor (35) is connected to one end of the drum (33) and is used to drive the drum (33) to rotate. One end of the drum (33) is wound with a lifting rope (1), and the other end is wound with a lifting rope (2). The free end of the lifting rope (1) is connected to a hook (31). The free end of the lifting rope (2) is guided by the fixed pulley (34) and connected to a hook (32). The hook (1) and the hook (2) are located in the same horizontal plane.

6. A rotatable double-lifting-point crane trolley according to claim 5, characterized in that, Auxiliary rotating shafts (36) are provided on the outer sides of both ends of the drum (33). The axis of the auxiliary rotating shafts (36) is parallel to the axis of the drum (33). The outer wall of the auxiliary rotating shafts (36) is in contact with the corresponding suspension rope one or suspension rope two wound on the drum (33).

7. A rotatable double-lifting-point crane trolley according to claim 5, characterized in that, A circular through slot is provided on the running trolley frame (11) within the area surrounded by the annular track (12). The circular through slot is coaxial with the annular track (12). An annular sliding line (4) is laid on the inner wall of the circular through slot. A current collector is provided on the rotating trolley frame (21). The current collector slides against the annular sliding line (4) to supply power to the second drive motor and the third drive motor (35).

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