CN214828615U - Redundant transmission system of hoist - Google Patents
Redundant transmission system of hoist Download PDFInfo
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- CN214828615U CN214828615U CN202122327141.2U CN202122327141U CN214828615U CN 214828615 U CN214828615 U CN 214828615U CN 202122327141 U CN202122327141 U CN 202122327141U CN 214828615 U CN214828615 U CN 214828615U
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Abstract
The utility model relates to a redundant transmission system of a crane in the technical field of crane transmission, which comprises a hoisting device body and two groups of driving devices, wherein the hoisting device body comprises two drums which are parallel to each other and are arranged in a mirror image manner and two hoisting ropes, the same ends of the two drums are respectively in transmission connection with the two driving devices, and the other ends of the two drums are provided with first brakes for braking the drums; two ends of one lifting rope are respectively wound on the cylinder bodies at the same ends of the two winding drums, and two ends of the other lifting rope are respectively wound on the cylinder bodies at the other ends of the two winding drums. The utility model discloses can drive the hoisting accessory body through two sets of drive arrangement, when driving motor or second stopper among a set of drive arrangement broke down, can reduce the shut down number of times to driving hoisting accessory body work alone through another group of drive arrangement driving motor or second stopper, improved the reliability of product.
Description
Technical Field
The utility model relates to a hoist transmission technical field especially relates to a redundant transmission system of hoist.
Background
With the development of the technology, the crane related to precise instruments and lifting of dangerous goods has higher and higher requirements on the reliability of products, and in no case of the occasions, the crane is required to eliminate faults in the shortest possible time when the crane breaks down, so that the influence on the production caused by equipment halt is reduced as much as possible. The conventional crane has the following drawbacks: 1. only one speed regulating device or one set of control circuit is reserved independently, the standby circuit does not work when the crane operates normally, once the control circuit fails, manual switching is needed, and the crane can also be shut down to different degrees; 2. a reel matches a lifting rope of rolling, therefore when the reel damaged, can brake the reel with the stopper that the reel matches, and the reel can't unreel the lifting rope, leads to being hung the unable descending of thing.
At present, Chinese patent with publication number CN212832458U discloses a redundant driving device for a crane, which comprises two driving motors, wherein output shafts of the two driving motors are connected with a gear commutator, an output shaft of the gear commutator is connected with a rotating shaft of a winding drum group through a first speed reducer, the device adopts the gear commutator to connect the output shafts of the two driving motors together, although the problem that the crane stops when one driving motor is started and damaged can be prevented, the crane not only adopts the driving motor as a vulnerable component, but also adopts the brake as a vulnerable component, so when the brake fails, the device has to be stopped and maintained; compared with the traditional crane driving device, the device adds a new part (a gear commutator) so as to increase the damage probability of the whole driving device, and does not solve the defect 2.
SUMMERY OF THE UTILITY MODEL
The object of the present invention is to provide a redundant transmission system for cranes in order to solve the above problems.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a redundant transmission system of a crane comprises a hoisting device body and two groups of driving devices, wherein the hoisting device body comprises two parallel winding drums and two hoisting ropes which are arranged in a mirror image mode, the same ends of the two winding drums are respectively in transmission connection with the two driving devices, and the other ends of the two winding drums are provided with first brakes for braking the winding drums; two ends of one lifting rope are respectively wound on the cylinder bodies at the same ends of the two winding cylinders, and two ends of the other lifting rope are respectively wound on the cylinder bodies at the other ends of the two winding cylinders; a guide rail beam parallel to the winding drums is further arranged between the winding drums, two guide devices are arranged on the guide rail beam along the length direction of the guide rail beam and are movably matched along the length direction of the guide rail beam, guide wheel sets used for guaranteeing that a lifting rope can be wound on the winding drum body neatly are arranged at two ends of each guide device, two ends of the lifting rope respectively bypass the corresponding guide wheel sets, and driving equipment used for driving the guide devices to move synchronously and in the same direction along the length direction of the guide rail beam is further arranged on the guide rail beam;
the driving device comprises a driving motor and a transmission gear set, the transmission gear set is provided with an output end and an input end, the output end of the transmission gear set is connected with one end of the corresponding winding drum through a first clutch, and the input end of the transmission gear set is connected with an output shaft of the driving motor through a second clutch;
the driving device also comprises a second brake for braking the input end of the transmission gear set;
two drive gear organizes a box of sharing, is equipped with the driving medium that makes two drive gear group transmission interconnect in this box, and the output rotational speed of two drive gear organizes the same.
Preferably, the transmission ratio of the transmission gear set is less than 1.
Preferably, the output shafts of the two transmission gear sets are arranged in parallel, the two output shafts are in transmission connection through transmission parts, and the transmission parts are transmission gears.
Preferably, the device further comprises a controller in signal connection with the two groups of driving devices.
Preferably, the controller is respectively connected with the driving motor and the second brake through signals.
Preferably, the drive means further comprises a frequency converter for controlling the second brake to open and close.
Preferably, the hoisting device body is provided with a frequency converter for controlling the first brake to open and close.
Preferably, two lifting ropes and two guiding devices are arranged, two ends of one lifting rope are respectively wound on the cylinder bodies at the same ends of the two winding drums, and two ends of the other lifting rope are respectively wound on the cylinder bodies at the other ends of the two winding drums; the two guides move synchronously and in the same direction.
Has the advantages that:
1. when one winding drum is damaged, the transmission connection between the damaged winding drum and the driving device can be disconnected, so that the winding drum is in a braking state, and then the other winding drum is used for unreeling the lifting rope, so that the lifted object falls to the ground;
2. the hoisting device body can be driven by the two groups of driving devices, when the driving motor or the second brake in one group of driving devices breaks down, the driving motor or the second brake in the other group of driving devices can work independently, so that the normal work of the hoisting device body is ensured, the shutdown times are reduced, and the reliability of the product is improved;
3. compared with the traditional crane driving device, new parts are not added, and only the parts used by the traditional crane driving device are added, so that the damage probability of the driving device is not increased.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
The reference numerals are explained below:
1. a hoisting device body; 11. a reel; 12. a first brake; 13. a guide rail beam; 14. a guide device; 141. a guide wheel group; 15. lifting a lifting rope; 2. a drive motor; 3. a second brake; 4. a drive gear set; 5. a transmission member; 6. a second clutch; 7. a first clutch.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the first embodiment, as shown in fig. 1, a redundant transmission system of a crane includes a hoisting device body 1 and two sets of driving devices, where the hoisting device body 1 includes two parallel winding drums 11 and two hoisting ropes 15 arranged in a mirror image, the same ends of the two winding drums 11 are respectively in transmission connection with the two driving devices, and the other ends of the two winding drums 11 are provided with first brakes 12 for braking the winding drums 11; two ends of one lifting rope 15 are respectively wound on the drum bodies at the same ends of the two drum bodies 11, and two ends of the other lifting rope 15 are respectively wound on the drum bodies at the other ends of the two drum bodies 11; a guide rail beam 13 parallel to the winding drum 11 is further arranged between the winding drums 11, two guide devices 14 are arranged on the guide rail beam 13 along the length direction of the guide rail beam 13, the guide devices 14 are movably matched along the length direction of the guide rail beam 13, guide wheel sets 141 used for ensuring that the lifting rope 15 can be wound on the drum body of the winding drum 11 in order are arranged at two ends of each guide device 14, two ends of the lifting rope 15 respectively bypass the corresponding guide wheel sets 141, and driving equipment used for driving the guide devices 14 to synchronously and unidirectionally move along the length direction of the guide rail beam 13 is further arranged on the guide rail beam 13;
when one winding drum 11 is damaged, the transmission connection between the damaged winding drum 11 and the driving device can be disconnected, the first brake 12 brakes the winding drum 11, at the moment, the driving device drives the other winding drum 11 to unreel the lifting ropes 15, so that a hoisted object falls to the ground, the synchronous lifting of the two lifting ropes 15 can be ensured when the two lifting ropes 15 are respectively connected with one lifting hook, the two lifting ropes 15 are also simultaneously connected with one lifting hook, and the two lifting ropes 15 share the gravity of the hoisted object, so that the lifting ropes 15 are prevented from breaking;
the driving device comprises a driving motor 2 and a transmission gear set 4, the transmission gear set 4 is provided with an output end and an input end, the output end of the transmission gear set 4 is connected with one end of a corresponding winding drum 11 through a first clutch 7, and the input end of the transmission gear set 4 is connected with an output shaft of the driving motor 2 through a second clutch 6;
the drive device also comprises a second brake 3 for braking the input of the transmission gear set 4;
the two transmission gear sets 4 share one box body, and a transmission part 5 which enables the two transmission gear sets 4 to be mutually connected in a transmission way is arranged in the box body, so that the output ends of the two transmission gear sets 4 are ensured to have the same rotating speed; the driving part 5 can prevent the situation that the rotating speeds of the output ends of the two transmission gear sets 4 are different due to the fact that the two driving motors 2 are asynchronous, so that the high consistency of the rotating speeds of the output ends of the two transmission gear sets 4 is ensured, and meanwhile, when one driving motor 2 is damaged, the other driving motor 2 can simultaneously drive the two transmission gear sets 4 to synchronously work, and the normal work of the hoisting device body 1 is ensured;
the two winding drums 11 can be synchronously driven by the two groups of driving devices, when one driving motor 2 or the second brake 3 in one group of driving devices fails, the driving motor 2 or the second brake 3 in the other group of driving devices can independently drive the lifting device body 1 to work, the number of times of machine halt is reduced, and the reliability of products is improved;
in the second embodiment, on the basis of the first embodiment, the transmission ratio of the transmission gear set 4 is smaller than 1, so that the lifting device body 1 is arranged to achieve the speed reduction effect compared with the driving motor 2.
Third embodiment, on the basis of first embodiment, two transmission gear group 4's output shaft parallel arrangement, and connect through transmission 5 transmission between two output shafts, and transmission 5 is transmission gear, set up like this and make two sets of drive arrangement overall arrangement more neat, and only need a gear, just can accomplish two transmission gear group 4's output shaft synchronous and syntropy and rotate, the structure is simpler to the reliability of product can be guaranteed to simple transmission 5 structure.
In the fourth embodiment, on the basis of the first, second or third embodiment, the lifting device further comprises a controller in signal connection with the two groups of driving devices, so that the controller can independently control one of the driving devices, and can also simultaneously control the two driving devices, so that when the driving motor 2 in one group of driving devices fails, the driving motor 2 can be controlled by the controller to stop running, and the driving motor 2 in the other group of driving devices independently drives the lifting device body 1 to work.
In the fifth embodiment, on the basis of the fourth embodiment, the controller is respectively connected with the driving motor 2 and the second brake 3 in a signal mode, so that when one or all of the driving motor 2 or the second brake 3 in the driving device fails, the controller controls the driving motor 2 or the second brake 3 in the driving device to stop running, and the driving motor or the second brake in the other group of driving devices independently drives the hoisting device body 1 to work.
Sixth embodiment, on the basis of the first embodiment, the driving device further includes a frequency converter for controlling the second brake 3 to open and close the brake, the frequency converter is in signal connection with the second brake 3, so that the second brake 3 can be controlled to open and close the brake through the frequency converter;
the lifting device body 1 further comprises a frequency converter for controlling the first brake 12 to open and close.
In the structure, under normal conditions, two groups of driving devices run simultaneously, the driving parts 5 are arranged to ensure that the rotating speeds of the output ends of the two transmission gear sets 4 are the same, and when the driving motor 2 in one of the driving devices fails, the controller cuts off a circuit connected with the driving motor 2 according to the failure state, so that the driving motor 2 stops working, and the transmission connection relation between the driving motor 2 and the corresponding driving motor 2 is disconnected; at the moment, the other driving motor 2 drives the corresponding transmission gear set 4 to continuously work, the transmission gear set 4 drives the other transmission gear set 4 to continuously work through the transmission piece 5, the two winding drums 11 are ensured to normally run, manual switching is not needed, and a redundant driving effect is achieved; when one of the second brakes 3 is damaged, the circuit of the second brake 3 can be cut off through the controller, the other second brake 3 is used for braking the transmission gear set 4, the transmission piece 5 exists between the two transmission gear sets 4, so that the normal second brake 3 can brake the two transmission gear sets 4, and when one of the transmission gear sets 4 and the transmission piece 5 is damaged, the machine needs to be stopped for maintenance.
Under the normal condition, two sets of drive gear group 4 drive the synchronous rotation of two reels 11, receive and release two lifting ropes 15 simultaneously, damage when one of them reel 11 and can't carry out to lifting rope 15 and receive and release, utilize this reel 11 corresponding first stopper 12 to brake this reel 11 this moment, then through the transmission connection between this reel 11 of first clutch 7 disconnection and drive gear group 4, two sets of drive gear group 4 only drive another reel 11 this moment, the required drive power of the reel 11 of work is shared by two drive gear group 4, that is to say, the required drive power of the reel 11 of two driving motor 2 homogeneous work, reel 11 only unreels 15 one end of lifting rope this moment, consequently the lifting hook and the hoisted object that this lifting rope 15 corresponds can slowly descend, guarantee that the hoisted object can safely fall to the ground.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A redundant transmission system of hoist which characterized in that: the hoisting device comprises a hoisting device body (1) and two groups of driving devices, wherein the hoisting device body (1) comprises two winding drums (11) which are parallel to each other and arranged in a mirror image mode and two hoisting ropes (15), the same ends of the two winding drums (11) are respectively in transmission connection with the two driving devices, and the other ends of the two winding drums are provided with first brakes (12) for braking the winding drums (11); two ends of one lifting rope (15) are respectively wound on the drum bodies at the same ends of the two drums (11), and two ends of the other lifting rope (15) are respectively wound on the drum bodies at the other ends of the two drums (11); a guide rail beam (13) parallel to the winding drums (11) is further arranged between the winding drums (11), two guide devices (14) are arranged on the guide rail beam (13) along the length direction of the guide rail beam, the guide devices (14) are movably matched along the length direction of the guide rail beam (13), guide wheel sets (141) used for guaranteeing that lifting ropes (15) can be wound on the drum bodies of the winding drums (11) in order are arranged at two ends of each guide device (14), the corresponding guide wheel sets (141) are respectively wound at two ends of each lifting rope (15), and driving equipment used for driving the guide devices (14) to synchronously and synchronously move along the length direction of the guide rail beam (13) is further arranged on the guide rail beam (13);
the driving device comprises a driving motor (2) and a transmission gear set (4), the transmission gear set (4) is provided with an output end and an input end, the output end of the transmission gear set (4) is connected with one end of a corresponding winding drum (11) through a first clutch (7), and the input end of the transmission gear set (4) is connected with an output shaft of the driving motor (2) through a second clutch (6);
the driving device also comprises a second brake (3) for braking the input end of the transmission gear set (4);
two drive gear group (4) share a box, are equipped with in this box and make two drive gear group (4) transmission connection's driving medium (5) each other, and the output rotational speed of two drive gear group (4) is the same.
2. A redundant drive train for a crane according to claim 1, wherein: the transmission ratio of the transmission gear set (4) is less than 1.
3. A redundant drive train for a crane according to claim 1, wherein: the output shafts of the two transmission gear sets (4) are arranged in parallel, and are in transmission connection through the transmission part (5), and the transmission part (5) is a transmission gear.
4. A redundant drive system for a crane according to any one of claims 1 to 3, wherein: the device also comprises a controller in signal connection with the two groups of driving devices.
5. A redundant drive train for a crane according to claim 4, wherein: the controller is respectively connected with the driving motor (2) and the second brake (3) through signals.
6. A redundant drive train for a crane according to claim 1, wherein: the driving device also comprises a frequency converter for controlling the second brake (3) to open and close the brake.
7. A redundant drive train for a crane according to claim 1, wherein: the hoisting device body (1) also comprises a frequency converter for controlling the first brake (12) to open and close the brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122327141.2U CN214828615U (en) | 2021-09-26 | 2021-09-26 | Redundant transmission system of hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122327141.2U CN214828615U (en) | 2021-09-26 | 2021-09-26 | Redundant transmission system of hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214828615U true CN214828615U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122327141.2U Active CN214828615U (en) | 2021-09-26 | 2021-09-26 | Redundant transmission system of hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214828615U (en) |
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2021
- 2021-09-26 CN CN202122327141.2U patent/CN214828615U/en active Active
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