CN217048970U - Anti-falling device of lifting platform - Google Patents
Anti-falling device of lifting platform Download PDFInfo
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- CN217048970U CN217048970U CN202122741430.7U CN202122741430U CN217048970U CN 217048970 U CN217048970 U CN 217048970U CN 202122741430 U CN202122741430 U CN 202122741430U CN 217048970 U CN217048970 U CN 217048970U
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Abstract
The utility model provides an anti-falling device of a lifting platform, which comprises an anti-falling mechanism for preventing a lifter from falling off, wherein the lifter comprises a platform assembly, a lifting driving mechanism and a lifting guide device; the anti-falling mechanism comprises a lock pin mechanism and a detection device; the utility model discloses a whether the lift rope that detects the lift in time judges the lift rope and splits, and the lift can alleviate the impact to lift actuating mechanism when each flat bed carries out cargo loading simultaneously to improve the security of lift.
Description
Technical Field
The utility model relates to a lift platform technical field, concretely relates to lift platform's anti falling device.
Background
Due to the requirement of carrying, a lifting platform is generally arranged on a ship body, and the lifting platform generally used for cargo transportation is mainly a boom type platform. The lifting platform for airplane berthing and transferring is rarely found on large ships, in the current large ships with airplane berthing, the airplane is generally berthed on a splint of a ship body, and the airplane needs to be considered to be collected in the ship body due to the limited area of the splint and the large risk of exposed berthing; in the prior art, the inboard elevator is generally hoisted by four points; the elevator has only two access directions; and the two directions are on the same straight line; when the airplane needs to enter the lifter, the airplane needs to move to the front or the back of the lifter; meanwhile, aligning the airplane body with the access passage; then the vehicle drives into the elevator; therefore, the occupied space is large when the airplane enters and exits the elevator; meanwhile, the elevator is hoisted by adopting four-point type, so that the airplane is prevented from colliding with a hoisting device when entering and exiting the lifting platform; a need to slow down; which in turn reduces the operating efficiency of the elevator.
The general loaded quality of the lift in this field is great, needs a comparatively safe lift anti falling mechanism.
Disclosure of Invention
The utility model provides a lift platform's anti falling device utilizes the utility model discloses a structure improves the security of lift.
In order to achieve the above purpose, the technical scheme of the utility model is that: an anti-falling device of a lifting platform comprises an anti-falling mechanism for preventing a lifter from falling, wherein the lifter comprises a platform assembly, a lifting driving mechanism and a lifting guide device; the anti-falling mechanism comprises a lock pin mechanism and a detection device.
The platform assembly comprises a lifting platform and a platform bracket; the lifting platform is connected with the platform bracket; the platform bracket comprises more than two rope winding wheel installation parts and more than two rope winding connection parts; the two rope winding wheel installation parts and the two rope winding connection parts are symmetrically arranged on the platform bracket; the two rope winding wheel installation parts are close to one side of the platform bracket; the two rope winding connecting parts are close to the other side of the platform bracket and are positioned above the rope winding wheel mounting part; the lifting platform is used for driving the airplane to lift; the lifting platform is supported by the platform support.
The lifting driving mechanism comprises a lifting driving device, a rope winding wheel set and a lifting rope, and two end parts of the lifting rope are respectively connected with the platform assembly; the lifting rope is provided with two, and the interval winding is established on wiring wheelset and lift drive between two lifting ropes, and lift drive is used for driving the lifting rope and moves about on wiring wheelset to drive lift platform lift.
The detection device is arranged on one side of the lifting rope and comprises two first travel switches and two travel switches; the two first travel switches are arranged on one side of the platform assembly and are respectively abutted with the corresponding lifting ropes; the two second travel switches are arranged on the other side of the platform assembly relative to the first travel switch and are respectively abutted with the corresponding lifting ropes; when a lifting rope is disconnected, the first travel switch or the second travel switch which is correspondingly abutted performs contact action and outputs a signal alarm.
The locking pin mechanism comprises a locking pin oil cylinder, a locking pin guiding piece and a locking piece, wherein the locking pin oil cylinder is arranged on the edge of one side, close to the elevator, of each stopping flat layer of the elevator, the locking pin oil cylinder is arranged on the edge of one side, close to the elevator, of each stopping flat layer, the locking pin guiding piece is arranged on one side of the locking pin oil cylinder, the locking pin guiding piece is provided with a through groove arranged along the axis direction of the locking pin guiding piece, the locking pin is movably arranged in the through groove of the locking pin guiding piece, the output end of the locking pin oil cylinder is fixedly connected with one end of the locking pin, and the locking pieces are arranged on the edge of the lower side of the lifting platform respectively; the locking piece is provided with a through hole matched with the lock pin, and the lock pin is driven to be inserted into the through hole of the locking piece through the extension of the lock pin oil cylinder, so that the lifting platform is locked.
According to the arrangement, when the lifting driving mechanism drives the lifting platform to be transferred from a current flat layer to another flat layer for loading or unloading equipment, goods and the like, the lock pin oil cylinder drives the lock pin to slide in the lock pin guide and insert the locking piece, so that the lifting platform and the current flat layer are fixedly connected with each other, and the lock pin mechanism can distribute part of pressure applied to the lifting platform to the current flat layer, so that impact force on the lifting driving mechanism during loading of the equipment and the goods is reduced, and meanwhile, the load of the lifting driving mechanism can be reduced; after the loading or unloading action is finished, the lock pin oil cylinder contracts to drive the lock pin to be separated from the locking piece, so that the fixed connection between the lifting platform and the current flat layer is released; then the lifting driving mechanism drives the lifting platform to another flat layer; therefore, the stability of the lifting platform during loading can be improved through the lock pin mechanism, the impact on the lifting driving mechanism during loading is reduced, and the service life of the lifting driving mechanism and the safety of the lifter are further prolonged; in addition, the lifting ropes can be detected through the first travel switch or the second travel switch, and because the two lifting ropes are wound on the rope winding wheel set and the lifting driving device at intervals, when one lifting rope is disconnected, the first travel switch or the second travel switch which is correspondingly abutted performs contact action output signal alarming, and the platform assembly is driven to descend to the lowest position through the lifting driving device; further improved safety.
Furthermore, the rope winding wheel set comprises a first rope winding wheel, a second rope winding wheel, a third rope winding wheel, a fourth rope winding wheel, a fifth rope winding wheel, a sixth rope winding wheel and a seventh rope winding wheel; two rope winding wheels are arranged; the two rope winding wheels five, the two rope winding wheels six and the two rope winding wheels seven are symmetrically arranged relative to the platform assembly; the rope winding wheel seven is arranged on the platform assembly; the lifting driving device is provided with a driving end and a fixed end; the first rope winding wheel is arranged at the fixed end; the second rope winding wheel is arranged at the driving end; the third rope winding wheel and the fourth rope winding wheel are sequentially arranged between the fifth rope winding wheel and the second rope winding wheel; two end parts of the lifting rope are respectively connected with the platform assembly; the two lifting ropes are arranged in parallel, and the two lifting ropes are wound on a rope wheel seven, a rope winding wheel six, a rope winding wheel five, a rope winding wheel one, a rope winding wheel two, a rope winding wheel three, a rope winding wheel four, the other rope winding wheel five, the other rope winding wheel six and the other rope winding wheel seven; the lifting driving device drives the rope pulley seven to reciprocate between the rope winding wheel five and the rope winding wheel six by driving the rope pulley two; according to the arrangement, the lifting driving device drives the platform assembly to lift, so that the platform assembly can move between different clamping plate layers of the ship body; the lifting driving device is connected with one side of the platform assembly; the lifting driving device is connected with the platform assembly in a cantilever manner; when the airplane needs to be transported, the lifting driving device drives the platform assembly to lift on an upper deck of the ship body, and the platform assembly is lifted through the lifting driving device on one side, so that the airplane can preferably enter the suspension device from the length direction without arranging suspension ropes in four point directions like a four-point suspension type, and the structure can enter the platform assembly from the left and right directions or the front three directions of the platform assembly, so that the occupied space of the airplane when the airplane enters and exits the platform assembly is small; meanwhile, the risk of collision between the airplane and the lifting driving device when the airplane enters and exits the platform assembly can be reduced; because the length of the lift cord is constant; when the lifting driving device drives the second rope winding wheel to move away from the first rope winding wheel; the second rope winding wheel drives the lifting rope wound on the rope winding wheel group to move; according to the pulley principle; the lifting rope drives the lifting driving device to be far away from the lifting driving device, so that the lifting rope drives the platform assembly to move upwards; when the lifting driving device drives the second rope winding wheel to move close to the first rope winding wheel; because the length of the lift cord is constant; at the moment, force action is lacked between the second rope winding wheel and the lifting rope; at this time the platform assembly moves downward under the influence of gravity.
Furthermore, a lock pin travel switch is arranged on the lock pin, and when the lock pin is inserted into the locking piece, a contact of the lock pin travel switch acts to output a signal; therefore, whether each lock pin is inserted into the locking piece or not can be monitored in real time, and safety is improved.
Further, a damping spring is arranged at the bottom of the platform; like this, when two lifting ropes of being connected with lift platform all break off, lift platform free fall falls, and damping spring can provide the buffering for lift platform, the damage of the goods or equipment on minimize platform subassembly and the lift platform.
Further, the elevator also comprises an elevating guide device; two lifting guide devices are arranged; the two lifting guide devices are connected with the platform assembly; the two lifting guide devices are close to one side of the platform assembly connected with the rope winding wheel seventh; and is positioned between the two rope winding wheels seven; the lifting guide device comprises a lifting guide rail assembly and a lifting guide piece; the platform assembly is connected with the lifting guide piece; the lifting guide piece is provided with a lifting guide wheel set; the lifting guide wheel set is arranged on the lifting guide rail component in a sliding manner; the lifting guide device is arranged; the platform assembly moves along the guide direction of the lifting guide device; therefore, the platform assembly has good stability when being lifted; meanwhile, the two lifting guide devices are close to one side of the platform assembly connected with the seventh rope winding wheel; the lift guide is thus also cantilevered to the platform assembly.
Further, the lifting guide rail assembly comprises a first lifting guide rail and a second lifting guide rail; the first lifting guide rail and the second lifting guide rail are provided with sliding rails; the lifting guide wheel set comprises a guide wheel bracket, and a pulley assembly, an auxiliary wheel I and an auxiliary wheel II which are arranged on the guide wheel bracket; the pulley component is arranged on the sliding rail in a sliding manner; the first auxiliary wheel is arranged on the side edge of the first lifting guide rail in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly; the auxiliary wheel II is arranged on the side edge of the lifting guide rail II in a sliding mode, and the radial direction of the auxiliary wheel I is perpendicular to the side edge of the platform assembly; thus, the sliding effect is good.
Drawings
Fig. 1 is a schematic structural diagram of the present invention installed on a deck.
Fig. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic view of the three-dimensional structure of the middle platform assembly, the lifting guide device and the lifting driving mechanism of the present invention.
Fig. 4 is the schematic structural diagram of the middle lifting driving mechanism of the present invention for removing the six rope winding wheels, the seven rope winding wheels and the eight rope winding wheels.
Fig. 5 is a practical state diagram of the middle lifting driving mechanism of the present invention with the six, seven and eight rope winding wheels removed.
Fig. 6 is a top view of the present invention.
Fig. 7 is a partially enlarged schematic view of a portion a of fig. 2.
Fig. 8 is a partially enlarged schematic view of a portion B in fig. 6.
Reference numerals: 1. a hatch assembly; 11. a cover plate; 12. a hatch drive; 21. a lifting platform; 22. a platform support; 23. a rope winding wheel mounting part; 24. a rope winding connection part; 3. a lifting drive mechanism; 31. a lift drive; 311. a drive section; 312. a fixed end; 32. a rope winding wheel set; 33. a lifting rope; 321. a first rope winding wheel; 322. a second rope winding wheel; 323. a third rope winding wheel; 324. a rope winding wheel IV; 325. a fifth rope winding wheel; 326. a rope winding wheel six; 327. a rope winding wheel seven; 328. eight rope winding wheels; 4. a lifting guide device; 41. a lifting guide rail assembly; 411. a first lifting guide rail; 412. a second lifting guide rail; 413. a slide rail; 42. a lifting guide; 43. a guide wheel bracket; 44. a sheave assembly; 45. a first auxiliary wheel; 46. a second auxiliary wheel; 51. a first travel switch; 52. two travel switches; 61. a lock pin oil cylinder; 62. a lock pin; 63. a locking pin guide; 64. a locking member; 65. a lock pin travel switch; 71. a hangar deck; 72. a vehicle garage deck; 73. a bottom deck.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 8, an anti-drop device for a lifting platform comprises an anti-drop mechanism for preventing the lifting platform of a lifter from dropping, wherein the lifter comprises a hatch cover assembly 1, a platform assembly 2, a lifting driving mechanism 3 and a lifting guide device 4, and the anti-drop mechanism comprises a lock pin mechanism and a detection device; the lifter is applied to the ship body; the ship body is provided with a garage deck 71, a garage deck 72 and a bottom deck 73; the garage deck 71 is positioned above the garage deck 72; the garage deck 72 is located above the bottom deck 73. The lifting driving mechanism 3 drives the platform assembly 2 to move on the hangar deck 71 and the vehicle hangar deck 72 of the ship body.
The hatch assembly 1 comprises a cover plate 11 and a hatch drive 12; the hatch cover driving device 12 is connected with the cover plate 11; the cover plate 11 is positioned above the hatch drive 12; the cover plate 11 and the hatch cover driving device 12 are hinged with the ship body; the top surface of the cover plate 11 is flush with the top surface of the hangar deck 71; the hatch cover driving device 12 drives the cover plate 11 to rotate along the direction of moving the platform assembly 2 along the direction of approaching or departing the connection part of the cover plate 11 and the ship body. The hatch drive 12 is in this embodiment a hydraulic ram.
The platform assembly 2 comprises a lifting platform 21 and a platform bracket 22; the lifting platform 21 is connected with the platform bracket 22; the platform bracket 22 includes two or more rope winding wheel mounting parts 23 and two or more rope winding connecting parts 24; the two rope winding wheel installation parts 23 and the two rope winding connection parts 24 are symmetrically arranged on the platform bracket 22; one side of the two rope winding wheel installation parts 23 close to the platform bracket 22; the two rope winding connecting parts 24 are close to the other side of the platform bracket 22, and the rope winding connecting parts 24 are positioned above the rope winding wheel mounting part 23; the lifting platform 21 is used for driving the airplane to lift; the platform bracket 22 is used for supporting the lifting platform 21; the supporting effect is improved.
The lifting driving device 31 drives the platform assembly 2 to lift, so that the platform assembly 2 moves between different clamping plate layers of the ship body; the lifting driving device 31 is connected with one side of the platform component 2; the lifting driving device 31 is connected with the platform component 2 in a cantilever manner; when the airplane needs to be transported, the lifting driving device drives the platform assembly 2 to lift up on an upper deck of the ship body, and the platform assembly 2 is lifted up and down through the lifting driving device on one side, so that the airplane can better enter the suspension device from the length direction without arranging suspension ropes in four point directions like a four-point suspension type, and the structure can enter the platform assembly from the left and right directions or the front three directions of the platform assembly 2, so that the airplane occupies a small peripheral space of the ship body when entering and exiting the platform assembly 2; meanwhile, the risk of collision with the lifting driving device 31 when the airplane enters and exits the platform assembly 2 can be reduced; because the length of lift cord 33 is constant; when the lifting driving device 31 drives the second rope winding wheel 322 to move away from the first rope winding wheel 321; the second rope winding wheel 322 drives the lifting rope 33 wound on the rope winding wheel group 32 to move; according to the pulley principle; the lifting rope 33 drives the lifting driving device 31 to move away from the lifting driving device 31, so that the lifting rope 33 drives the platform assembly 2 to move upwards; when the lifting driving device 31 drives the second rope winding wheel 322 to move close to the first rope winding wheel 321; because the length of lift cord 33 is constant; at this time, the second rope winding wheel 322 and the lifting rope 33 are in a loose state; this time the platform assembly 2 moves downwardly under the influence of gravity.
The bottom of the platform is also provided with a damping spring (not shown in the figure); thus, when both lift cords 33 connected to lift platform 21 are disconnected, the free fall of lift platform 21 falls and the damping springs provide cushioning for lift platform 21, minimizing damage to the platform assembly and the cargo or equipment on lift platform 21.
The lifting driving mechanism 3 comprises a lifting driving device 31, a rope winding wheel group 32 and a lifting rope 33; the rope winding wheel group 32 comprises a rope winding wheel I321, a rope winding wheel II 322, a rope winding wheel III 323, a rope winding wheel IV 324, a rope winding wheel V325, a rope winding wheel VI 326, a rope winding wheel VII 327 and a rope winding wheel VIII 328; two of the rope winding wheel five 325, the rope winding wheel six 326, the rope winding wheel seven 327 and the rope winding wheel eight 328 are arranged; two wrap sheaves five 325, two wrap sheaves six 326, two wrap sheaves seven 327, and two wrap sheaves eight 328 are all symmetrically disposed about the platform assembly 2.
A rope winding wheel seven 327 is arranged on the platform assembly; the lifting driving device 31 is provided with a driving end 311 and a fixed end 312; the first rope winding wheel 321 is arranged at the fixed end 312; the second rope winding wheel 322 is arranged at the driving end 311; the third rope winding wheel 323 and the fourth rope winding wheel 324 are sequentially arranged between the fifth rope winding wheel 325 and the second rope winding wheel 322; the two ends of the lifting rope 33 are respectively connected with the platform assembly; the two lifting ropes 33 are arranged, and the two lifting ropes 33 are wound on a rope wheel seven, a rope winding wheel six 326, a rope winding wheel five 325, a rope winding wheel one 321, a rope winding wheel two 322, a rope winding wheel three 323, a rope winding wheel four 324, another rope winding wheel five 325, another rope winding wheel six 326 and another rope winding wheel seven 327 at intervals; the lifting driving device 31 drives the rope pulley seven to reciprocate between the rope winding pulley five 325 and the rope winding pulley six 326 by driving the rope pulley two; by arranging the rope winding wheel eight 328; the tensioning effect of the rope winding wheel group 32 on the lifting rope 33 is improved; thus, the rope winding wheel group 32 drives the platform component 2 to move with good control effect. The installation of a rope winding wheel seven 327 is realized by arranging a rope winding wheel installation part 23; the lifting rope 33 is connected through the rope winding connection part 26; sliding friction is generated between the lifting rope 33 and the rope winding wheel seven 327 so as to realize the lifting of the platform assembly 2.
In the present embodiment, the two first stroke switches 51 are provided between the fifth and sixth rope pulleys 325 and 326, respectively, and abut against the lifting rope 33.
The lifting guide rail assembly 41 comprises a first lifting guide rail 411 and a second lifting guide rail 412; a sliding rail 413 is arranged between the first lifting guide rail 411 and the second lifting guide rail 412; the first lifting guide rail 411, the second lifting guide rail 412 and the sliding rail 413 are arranged vertically; the lifting guide wheel set comprises a guide wheel bracket 43, a pulley assembly 44, a first auxiliary wheel 45 and a second auxiliary wheel 46, wherein the pulley assembly 44, the first auxiliary wheel and the second auxiliary wheel are arranged on the guide wheel bracket 43; the pulley assembly 44 is slidably disposed on the sliding rail 413; the first auxiliary wheel 45 is arranged on the side edge of the first lifting guide rail 411 in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly; the second auxiliary wheel 46 is arranged on the side edge of the second lifting guide rail 412 in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly; thus, the sliding effect is good.
Two lifting guide devices 4 are arranged; the two lifting guide devices 4 are connected with the platform component 2; the two lifting guide devices 4 are close to one side of the platform component 2 connected with the rope winding wheel seven 327; and is positioned between the two rope winding wheels seven 327; the elevation guide device 4 includes an elevation guide rail assembly 41 and an elevation guide 42; the platform assembly 2 is connected with the lifting guide 42; the lifting guide 42 is provided with a lifting guide wheel set; the lifting guide wheel set is slidably arranged on the lifting guide rail assembly 41. By arranging the lifting guide device 4; the platform assembly 2 moves along the guiding direction of the lifting guiding device 4; therefore, the platform component 2 has good stability when being lifted; meanwhile, the two lifting guide devices 4 are close to one side of the platform assembly connected with the rope winding wheel seven 327; the lifting guide 4 is thus also cantilevered to the platform assembly 2.
The lifting guide rail assembly 41 comprises a first lifting guide rail 411 and a second lifting guide rail 412; a sliding rail 413 is arranged between the first lifting guide rail 411 and the second lifting guide rail 412; the first lifting guide rail 411, the second lifting guide rail 412 and the slide rail 413 are arranged vertically; the lifting guide wheel set comprises a guide wheel bracket 43, a pulley assembly 44, an auxiliary wheel I45 and an auxiliary wheel II 46, wherein the pulley assembly 44, the auxiliary wheel I45 and the auxiliary wheel II are arranged on the guide wheel bracket 43; the pulley assembly 44 is slidably disposed on the sliding rail 413; the first auxiliary wheel 45 is arranged on the side edge of the first lifting guide rail 411 in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly; the second auxiliary wheel 46 is slidably disposed on the side edge of the second lifting guide rail 412, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly. Thus, the sliding effect is good.
The lock pin mechanism comprises a lock pin oil cylinder 61, a lock pin 62, a lock pin guide 63 and a locking piece 64, the lock pin oil cylinder 61 is respectively arranged on the edges of a garage deck 71, the garage deck and a bottom deck close to the lifter, the lock pin guide 63 is arranged on one side of the lock pin oil cylinder 61, the lock pin guide 63 is provided with a through groove arranged along the axial direction of the lock pin guide, the lock pin 62 is movably arranged in the through groove of the lock pin guide 63, the output end of the lock pin oil cylinder 61 is fixedly connected with one end of the lock pin 62, and the locking piece 64 is respectively arranged on the edge of the lower side of the lifting platform 21; a through hole matched with the lock pin 62 is formed in the locking piece 64, the lock pin 62 is driven to be inserted into the through hole of the locking piece 64 through the extension of the lock pin oil cylinder 61, and the lock pin 62 mechanism realizes the locking of the lifting platform 21;
the lock pin 62 is also provided with a lock pin travel switch 65, and after the lock pin 62 is inserted into the locking piece 64, the lock pin travel switch 65 is in contact action to output a signal; thus, it is possible to monitor in real time whether each lock pin 62 is inserted into the lock member 64, thereby improving safety.
The detection device is arranged on one side of the lifting rope 33 and comprises two first travel switches 51 and two travel switches 52; the two first travel switches 51 are arranged on one side of the platform assembly, and the two first travel switches 51 are respectively abutted with the corresponding lifting ropes 33; the two second travel switches are arranged on the other side of the platform assembly relative to the first travel switch 51 and are respectively abutted with the corresponding lifting ropes 33; when a lifting rope 33 is disconnected, the first travel switch 51 or the second travel switch which is correspondingly abutted performs contact action and outputs a signal alarm;
according to the arrangement, when the lifting driving mechanism 3 drives the lifting platform 21 to be transferred from the current flat layer to another flat layer for loading or unloading equipment, goods and the like, the lock pin oil cylinder 61 drives the lock pin 62 to slide in the lock pin guide 63 and insert the lock piece 64, so that the lifting platform 21 and the flat layer where the lifting platform is located are fixedly connected with each other, and the lock pin 62 mechanism can distribute a part of pressure applied to the lifting platform 21 to the flat layer where the lifting platform is located, so that the impact force on the lifting driving mechanism 3 during loading the equipment and the goods is reduced, and meanwhile, the load of the lifting driving mechanism 3 can be reduced; after the loading or unloading action is finished, the lock pin oil cylinder 61 contracts to drive the lock pin 62 to be separated from the locking piece 64, so that the fixed connection between the lifting platform 21 and the current flat layer is released; then the lifting driving mechanism 3 drives the lifting platform 21 to another flat layer; in this way, the stability of the lifting platform 21 during loading can be improved through the lock pin 62 mechanism, the impact on the lifting driving mechanism 3 during loading is reduced, and the service life of the lifting driving mechanism 3 and the safety of the lifter are further prolonged; in addition, the lifting ropes 33 can be detected through the first travel switch 51 or the second travel switch, and because the two lifting ropes 33 are wound on the rope winding wheel set 32 and the lifting driving device 31 at intervals, when one lifting rope 33 is disconnected, the first travel switch 51 or the second travel switch which is correspondingly abutted performs contact action output signal alarm, and the platform assembly is driven to descend to the lowest position through the lifting driving device 31; further improved safety.
Claims (6)
1. The utility model provides a lift platform's anti falling device, includes the anti falling mechanism who is used for preventing that the lift from dropping, its characterized in that: the lifter comprises a platform assembly, a lifting driving mechanism and a lifting guide device; the anti-falling mechanism comprises a lock pin mechanism and a detection device;
the platform assembly comprises a lifting platform and a platform bracket; the lifting platform is connected with the platform bracket; the platform bracket comprises more than two rope winding wheel installation parts and more than two rope winding connection parts; the two rope winding wheel installation parts and the two rope winding connection parts are symmetrically arranged on the platform bracket; the two rope winding wheel installation parts are close to one side of the platform bracket; the two rope winding connecting parts are close to the other side of the platform bracket and are positioned above the rope winding wheel mounting part; the lifting platform is used for driving the airplane to lift; the platform bracket is used for supporting the lifting platform;
the lifting driving mechanism comprises a lifting driving device, a rope winding wheel set and a lifting rope, and two end parts of the lifting rope are respectively connected with the platform assembly; the two lifting ropes are wound on the rope winding wheel set and the lifting driving device at intervals, and the lifting driving device is used for driving the lifting ropes to move on the rope winding wheel set so as to drive the lifting platform to lift;
the detection device is arranged on one side of the lifting rope and comprises two first travel switches and two travel switches; the two first travel switches are arranged on one side of the platform assembly and are respectively abutted with the corresponding lifting ropes; the two second travel switches are arranged on the other side of the platform assembly relative to the first travel switch and are respectively abutted with the corresponding lifting ropes; when a lifting rope is disconnected, the first travel switch or the second travel switch which is correspondingly abutted performs contact action and outputs a signal alarm;
the locking pin mechanism comprises a locking pin oil cylinder, a locking pin guiding piece and a locking piece, wherein the locking pin oil cylinder is arranged on the edge of one side, close to the elevator, of each stopping flat layer of the elevator, the locking pin oil cylinder is arranged on the edge of one side, close to the elevator, of each stopping flat layer, the locking pin guiding piece is arranged on one side of the locking pin oil cylinder, the locking pin guiding piece is provided with a through groove arranged along the axis direction of the locking pin guiding piece, the locking pin is movably arranged in the through groove of the locking pin guiding piece, the output end of the locking pin oil cylinder is fixedly connected with one end of the locking pin, and the locking pieces are arranged on the edge of the lower side of the lifting platform respectively; the locking piece is provided with a through hole matched with the lock pin, and the lock pin is driven to be inserted into the through hole of the locking piece through the extension of the lock pin oil cylinder, so that the lifting platform is locked.
2. A drop prevention device for a lift platform as claimed in claim 1, wherein: the rope winding wheel set comprises a first rope winding wheel, a second rope winding wheel, a third rope winding wheel, a fourth rope winding wheel, a fifth rope winding wheel, a sixth rope winding wheel and a seventh rope winding wheel; two rope winding wheels are arranged; the two rope winding wheels five, the two rope winding wheels six and the two rope winding wheels seven are symmetrically arranged relative to the platform assembly; the rope winding wheel seven is arranged on the platform assembly; the lifting driving device is provided with a driving end and a fixed end; the first rope winding wheel is arranged at the fixed end; the second rope winding wheel is arranged at the driving end; the third rope winding wheel and the fourth rope winding wheel are sequentially arranged between the fifth rope winding wheel and the second rope winding wheel; two end parts of the lifting rope are respectively connected with the platform assembly; the two lifting ropes are arranged in parallel, and the two lifting ropes are wound on a rope wheel seven, a rope winding wheel six, a rope winding wheel five, a rope winding wheel one, a rope winding wheel two, a rope winding wheel three, a rope winding wheel four, the other rope winding wheel five, the other rope winding wheel six and the other rope winding wheel seven; the lifting driving device drives the rope pulley seven to reciprocate between the rope winding wheel five and the rope winding wheel six by driving the rope pulley two.
3. The drop-preventing device of a lifting platform as claimed in claim 1, wherein: and a lock pin travel switch is also arranged on the lock pin, and when the lock pin is inserted into the locking piece, the contact of the lock pin travel switch acts to output a signal.
4. The drop-preventing device of a lifting platform as claimed in claim 1, wherein: and a damping spring is arranged at the bottom of the platform.
5. A drop prevention device for a lift platform as claimed in claim 1, wherein: the elevator also comprises an elevating guide device; two lifting guide devices are arranged; the two lifting guide devices are connected with the platform assembly; the two lifting guide devices are close to one side of the platform assembly connected with the rope winding wheel; and is positioned between the two rope winding wheels; the lifting guide device comprises a lifting guide rail assembly and a lifting guide piece; the platform assembly is connected with the lifting guide piece; the lifting guide piece is provided with a lifting guide wheel set; the lifting guide wheel set is arranged on the lifting guide rail component in a sliding manner.
6. A drop prevention device for a lifting platform as claimed in claim 5, wherein: the lifting guide rail assembly comprises a first lifting guide rail and a second lifting guide rail; the first lifting guide rail and the second lifting guide rail are provided with sliding rails; the lifting guide wheel set comprises a guide wheel bracket, and a pulley assembly, an auxiliary wheel I and an auxiliary wheel II which are arranged on the guide wheel bracket; the pulley component is arranged on the sliding rail in a sliding manner; the first auxiliary wheel is arranged on the side edge of the first lifting guide rail in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly; the second auxiliary wheel is arranged on the side edge of the second lifting guide rail in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122741430.7U CN217048970U (en) | 2021-11-10 | 2021-11-10 | Anti-falling device of lifting platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122741430.7U CN217048970U (en) | 2021-11-10 | 2021-11-10 | Anti-falling device of lifting platform |
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| CN217048970U true CN217048970U (en) | 2022-07-26 |
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| CN202122741430.7U Active CN217048970U (en) | 2021-11-10 | 2021-11-10 | Anti-falling device of lifting platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114179973A (en) * | 2021-11-10 | 2022-03-15 | 中船华南船舶机械有限公司 | Anti-falling mechanism of elevator |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114179973A (en) * | 2021-11-10 | 2022-03-15 | 中船华南船舶机械有限公司 | Anti-falling mechanism of elevator |
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