CN118479347A - Bridge crane limiting and locking device - Google Patents
Bridge crane limiting and locking device Download PDFInfo
- Publication number
- CN118479347A CN118479347A CN202410787516.9A CN202410787516A CN118479347A CN 118479347 A CN118479347 A CN 118479347A CN 202410787516 A CN202410787516 A CN 202410787516A CN 118479347 A CN118479347 A CN 118479347A
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- CN
- China
- Prior art keywords
- lifting
- gear
- hook
- shaft sleeve
- rack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/01—General aspects of mobile cranes, overhead travelling cranes, gantry cranes, loading bridges, cranes for building ships on slipways, cranes for foundries or cranes for public works
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a bridge crane limit locking device, which relates to the technical field of cranes and comprises a shaft sleeve, a movable cavity and a gravity limit structure, wherein the gravity limit structure is arranged in the movable cavity and comprises a limit plate, a lifting rod and an elastic component, the lifting rod is connected with the bottom of the limit plate, the lifting rod is elastically connected with the inner side of the movable cavity through the elastic component, an inverted round platform block is arranged at the bottom end of the lifting rod, a plurality of clamping blocks are distributed on the circumference of the outer side of the round platform block, the clamping blocks are in a V-shaped block shape, a chute which is in sliding clamping with the clamping blocks is arranged at the lower end of the shaft sleeve, the chute is matched with the clamping blocks, and a lifting hook is arranged at the bottom of the round platform block. According to the invention, after a weight is arranged on the hook, the elastic component can be compressed, and the chute is clamped with the clamping block, so that the round table block cannot rotate in the movable cavity, the purpose of hanging materials to position the hook is realized, and the hook is prevented from driving the materials to rotate during lifting.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a limiting and locking device of a bridge crane.
Background
The bridge crane is hoisting equipment for hoisting materials in workshops, warehouses and stock yards, and the bridge frame of the bridge crane longitudinally runs along the tracks paved on the overhead frames at two sides, so that the space below the bridge frame can be fully utilized for hoisting the materials, and the bridge crane is not hindered by ground equipment.
In the hoisting operation among the prior art, in order to be convenient for hang the goods on the lifting hook, so the lifting hook is rotated through the spliced pole and is connected on the lifting mechanism is installed to the mode of the inside in movable chamber to the lifting hook can swing, can make the lifting hook aim at the position that the goods is located through rotating the lifting hook, and the swing lifting hook then is convenient for make the lifting hook the goods, starts the hoisting assembly after hanging the material on the lifting hook, to the material transportation.
But when the lifting hook connected in a rotating way is used for lifting cargoes, the gravity center or the steel wire rope of the cargoes is inclined, so that the lifted cargoes continuously rotate along with the rotation of the lifting hook in the moving process, the cargoes are unstable in the conveying process, the cargoes are easy to collide with peripheral facilities, the lifting rope for lifting materials in the collision process is deviated from the lifting hook, the materials possibly fall off from the lifting hook, and the potential safety hazard is large.
Disclosure of Invention
The invention aims to provide a limiting and locking device for a bridge crane, which aims to solve the technical problem that materials are easy to unhook due to the fact that the materials drive a hook to rotate in the prior art.
The technical problems to be solved by the invention can be realized by the following technical scheme:
the utility model provides a bridge crane limit locking device, includes axle sleeve and activity chamber, the activity chamber is seted up inside the axle sleeve, still includes:
The gravity limiting structure is arranged in the movable cavity and comprises a limiting plate, a lifting rod and an elastic component, wherein the limiting plate is slidably connected in the movable cavity, the lifting rod is connected with the bottom of the limiting plate and is elastically connected with the inner wall of the movable cavity through the elastic component, an inverted round platform block is arranged at the bottom end of the lifting rod, a plurality of clamping blocks are circumferentially distributed on the outer side of the round platform block, the clamping blocks are in a V-shaped block shape, a chute clamped with the clamping blocks is arranged at the lower end of the shaft sleeve and is matched with the clamping blocks, and a lifting hook is arranged at the bottom of the round platform block;
the gravity self-locking structure is matched between the lifting hook and the shaft sleeve, and is matched with the opening of the lifting hook.
As a further scheme of the invention: the elastic component comprises a spring, the spring is sleeved outside the lifting rod, and the spring is positioned between the limiting plate and the shaft sleeve.
As a further scheme of the invention: the gravity self-locking structure comprises a rotary groove, a half-toothed ring and a driving structure, wherein the rotary groove is formed in the hook in a penetrating manner, a limiting component is arranged on the inner side of the rotary groove, a tooth slot is formed in one side of the half-toothed ring, the half-toothed ring is connected in the rotary groove through the sliding fit of the limiting component, a connecting groove matched with the half-toothed ring is formed in the end portion, close to the opening, of the hook, a connecting through hole communicated with the rotary groove is formed in the outer wall of the hook, the driving structure is connected with the shaft sleeve in a matching manner, and the driving structure penetrates through the connecting through hole and is connected with the half-toothed ring in a meshed manner.
As a further scheme of the invention: the limiting assembly comprises an arc-shaped sliding hole, the arc-shaped sliding hole is formed in the side face of the half-tooth ring in a penetrating mode, two limiting guide posts are fixed on the inner side of the rotary groove, and each limiting guide post is connected with the arc-shaped sliding hole in a sliding mode.
As a further scheme of the invention: the driving structure comprises a first gear, a second gear and a first rack, wherein the side face of the lifting hook is connected with a fixing frame, the first gear and the second gear are both in rotary connection with the fixing frame, the first gear is in meshed connection with the half-toothed ring, the second gear is in meshed connection with the first gear, the first rack is in rotary fit connection with the outer side of the shaft sleeve, the side face of the first rack is in meshed connection with the second gear, and a sliding rod is connected to the fixing frame and is in sliding fit connection with the first rack.
As a further scheme of the invention: the outer side of the shaft sleeve is provided with a ring groove, the inner side of the ring groove is rotationally connected with a rotating ring, and the first rack is connected to the bottom end of the rotating ring.
As a further scheme of the invention: the sliding rod is L-shaped, a sliding groove is formed in the outer wall of the rack, and the sliding rod is in sliding connection with the corresponding sliding groove.
As a further scheme of the invention: the lifting device is characterized in that a rotating structure is arranged above the shaft sleeve and comprises a lifting plate, a half gear and a pneumatic cylinder, connecting plates which are arranged in parallel with the lifting hooks are respectively fixed on two sides of the top of the shaft sleeve, the connecting plates are in rotary connection with the lifting plate, the half gear is arranged at the top of the shaft sleeve, a rack II meshed with the half gear is horizontally arranged at the bottom of the lifting plate, the pneumatic cylinder is fixed at the bottom of the lifting plate, and the driving end of the pneumatic cylinder is connected with the end of the rack II.
The invention has the beneficial effects that:
1. According to the invention, the gravity self-locking structure is arranged, so that the half-toothed ring meshed with the gear I slides clockwise when the crane is carried out, the end part of the half-toothed ring is inserted into the connecting groove, the opening of the lifting hook can be automatically plugged, the effect that the opening of the lifting hook can be plugged by the half-toothed ring is realized by utilizing the gravity of materials, the structural design is ingenious, the driving of other driving structures is not needed, the heavy object is prevented from being separated from the lifting hook in the swinging process of the lifting hook, the safety is enhanced, when the heavy object is placed at a formulated place, the lifting hook moves upwards due to the resilience force of the spring, so that the half-toothed ring meshed with the gear I slides anticlockwise, the half-toothed ring is contracted into the rotating groove, the opening of the lifting hook is not blocked, and the materials can be taken down;
2. According to the invention, the elastic component is arranged in the movable cavity to be elastically connected with the hook, so that the round table block can rotate in the movable cavity when the hook is not used for hanging a heavy object, and the hook can rotate, so that the heavy object can be better hung, the spring can be compressed after the heavy object is arranged on the hook, the chute is clamped with the clamping block, the round table block can not rotate in the movable cavity, the purpose of hanging a material to position the lifting hook is realized, and the hook is prevented from driving the material to rotate during lifting.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a mating connection structure of a half-toothed ring and a hook according to the present invention;
FIG. 3 is a schematic view of a first mating connection structure of a hook and a gear according to the present invention;
FIG. 4 is a schematic diagram of a mating connection between a slide bar and a rack in the present invention.
In the figure: 1. a shaft sleeve; 2. a movable cavity; 3. a limiting plate; 4. a lifting rod; 5. round table blocks; 6. a clamping block; 7. a spring; 8. a lifting hook; 9. a rotary groove; 10. a connecting through hole; 11. a half-toothed ring; 12. an arc slide hole; 13. a connecting groove; 14. limiting guide posts; 15. a first gear; 16. a second gear; 17. a fixing frame; 18. a first rack; 19. a rotating ring; 20. a ring groove; 21. a slide bar; 22. a chute; 23. a connecting plate; 24. a lifting plate; 25. a wire rope; 26. a half gear; 27. a second rack; 28. and a pneumatic cylinder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-4, a limiting and locking device of a bridge crane comprises a shaft sleeve 1 and a movable cavity 2, wherein the movable cavity 2 is arranged inside the shaft sleeve 1, and the limiting and locking device also comprises a gravity limiting structure and a gravity self-locking structure;
the gravity limiting structure is arranged in the movable cavity 2, and comprises a limiting plate 3, a lifting rod 4 and an elastic component, wherein the limiting plate 3 is slidably connected in the movable cavity 2, the lifting rod 4 is fixedly connected with the bottom of the limiting plate 3, the lifting rod 4 is elastically connected with the inner wall of the movable cavity 2 through the elastic component, an inverted round table block 5 is fixedly arranged at the bottom end of the lifting rod 4, a plurality of clamping blocks 6 are fixedly distributed on the circumference outside the round table block 5, the clamping blocks 6 are in a V-shaped block shape, a chute which is clamped with the clamping blocks 6 is arranged at the lower end of the shaft sleeve 1, when the round table block 5 descends, the chute is clamped with the clamping blocks 6, the limiting plate 3, the lifting rod 4, the round table block 5 and the clamping blocks 6 are in an integrated structure, and a connecting rod is fixedly connected to the bottom of the round table block 5, and a lifting hook 8 is fixedly connected to the round table block 5 through the connecting rod;
The gravity self-locking structure is matched between the lifting hook 8 and the shaft sleeve 1, and is matched with the opening of the lifting hook 8, and the gravity self-locking structure is used for controlling the opening and closing states of the opening of the lifting hook 8.
In some embodiments, as shown in fig. 2, in order to facilitate automatic return of the hook 8 when it is not subjected to gravity, the elastic component includes a spring 7, the spring 7 is sleeved outside the lifting rod 4, and the spring 7 is located between the limiting plate 3 and the shaft sleeve 1 and is not fixedly connected with each other.
Under the initial condition, limiting plate 3 is owing to receive spring 7's support, the chute does not block with fixture block 6, lifting hook 8 can rotate this moment, rotate lifting hook 8 and aim at the position that the goods is located, make lifting hook 8 catch on the goods, then the hoisting member carries out the jack-up, after lifting hook 8 receives the gravity of material and the pulling force of hoisting member, limiting plate 3, lifter 4, round platform piece 5, fixture block 6 moves down relative axle sleeve 1, the removal of limiting plate 3 can make spring 7 compress, the removal of round platform piece 5 can make chute and fixture block 6 block, can prevent lifting hook 8 from taking place to rotate when lifting the material, reach the place of making when the material, lifting hook 8 does not receive the material gravity to pull, spring 7's resilience makes limiting plate 3, lifter 4, round platform piece 5, fixture block 6 reset, fixture block 6 breaks away from the chute, make things convenient for lifting hook 8 to rotate and break away from with the material.
In some specific embodiments, as shown in fig. 2, in order to facilitate the realization that the half-toothed ring 11 can block the open end of the lifting hook 8, the gravity self-locking structure comprises a rotary groove 9, a half-toothed ring 11 and a driving structure, the lifting hook 8 is internally penetrated and provided with the rotary groove 9, the inner side of the rotary groove 9 is provided with a limiting component, one side of the half-toothed ring 11 is provided with a tooth slot, the half-toothed ring 11 is connected in the rotary groove 9 through the sliding fit of the limiting component, the half-toothed ring 11 can stretch out or shrink into the rotary groove 9, the end part of the lifting hook 8 close to the opening is provided with a connecting groove 13 matched with the half-toothed ring 11, the outer wall of the lifting hook 8 is provided with a connecting through hole 10 communicated with the rotary groove 9, the driving structure is matched and connected with the shaft sleeve 1, and the driving structure passes through the connecting through hole 10 and is meshed and connected with the half-toothed ring 11.
In some embodiments, as shown in fig. 2, in order to prevent the semi-toothed ring 11 from shifting during rotation, the limiting assembly includes an arc-shaped sliding hole 12, the arc-shaped sliding hole 12 is perforated on the side surface of the semi-toothed ring 11, and two limiting guide posts 14 are fixed on the inner side of the rotating slot 9, and each limiting guide post 14 is slidably connected with the arc-shaped sliding hole 12.
In some embodiments, as shown in fig. 2 or fig. 3, in order to facilitate the rotation of the half-toothed ring 11 when the hook 8 descends under gravity, the driving structure includes a first gear 15, a second gear 16 and a first rack 18, the side surface of the hook 8 is fixedly connected with a fixing frame 17, the first gear 15 and the second gear 16 are both rotatably connected with the fixing frame 17, the first gear 15 is in meshed connection with the half-toothed ring 11, the second gear 16 is in meshed connection with the first gear 15, the fixing frame 17 is distributed in pairs for facilitating the stable rotation of the first gear 15 and the second gear 16, the first rack 18 is rotatably connected with the outer side of the sleeve 1 in a matched manner, the side surface of the first rack 18 is in meshed connection with the second rack 16, a slide bar 21 is fixedly connected with the fixing frame 17, and the slide bar 21 is in sliding fit connection with the first rack 18.
The second gear 16 is rotationally connected with the lifting hook 8 through the fixing frame 17, the second gear 16 is meshed with the first rack 18, when the lifting hook 8 moves downwards to drive the second gear 16 to rotate clockwise under the action of the first rack 18, the first gear 15 meshed with the second gear 16 rotates anticlockwise, the half-toothed ring 11 meshed with the first gear 15 slides clockwise, and finally the end part of the half-toothed ring 11 is inserted into the connecting groove 13 to block the opening of the lifting hook 8, so that the effect of blocking the opening of the lifting hook 8 by the half-toothed ring 11 is achieved, the lifting hook 8 is prevented from being separated from the lifting hook 8 when a heavy object is swung in the lifting process, safety is enhanced, the lifting hook 8 is not pulled by the gravity of the material when the heavy object is placed at a set place, the lifting hook 8 moves upwards due to the resilience force of the spring 7, the second gear 16 meshed with the first rack 18 rotates anticlockwise, the half-toothed ring 11 meshed with the first gear 15 in the clockwise direction slides anticlockwise, the half-toothed ring 11 meshed with the first gear 15 is contracted into the rotating groove 9, the opening of the lifting hook 8 is not blocked, and the material can be taken down.
In some embodiments, as shown in fig. 2, in order to facilitate the rack one 18 to rotate around the shaft sleeve 1 along with the lifting hook 8, an annular groove 20 is formed on the outer side of the shaft sleeve 1, a rotating ring 19 is connected on the inner side of the annular groove 20 in a rotating fit manner, and the rack one 18 is fixedly connected to the bottom end of the rotating ring 19.
In some embodiments, as shown in fig. 4, in order to facilitate the rotation of the hook 8 and simultaneously drive the rack one 18 to rotate synchronously, the slide bar 21 is in an L-shaped rod shape, a sliding groove 22 is formed on the outer wall of the rack one 18, and the slide bar 21 is slidably connected with the corresponding sliding groove 22.
In some specific embodiments, as shown in fig. 1 or fig. 2, for facilitating unhooking of materials, a rotating structure is arranged above the shaft sleeve 1, the rotating structure comprises a lifting plate 24, a half gear 26 and a pneumatic cylinder 28, connecting plates 23 which are arranged in parallel with the lifting hooks 8 are respectively fixed on two sides of the top of the shaft sleeve 1, the connecting plates 23 are rotatably connected with the lifting plate 24 through rotating shafts, the half gear 26 is fixedly arranged at the top of the shaft sleeve 1, a rack II 27 meshed with the half gear 26 is horizontally arranged at the bottom of the lifting plate 24, the pneumatic cylinder 28 is fixed at the bottom of the lifting plate 24, the driving end of the pneumatic cylinder 28 is connected with the end of the rack II 27, a steel wire rope 25 is fixedly connected to one side, away from the shaft sleeve 1, of the lifting plate 24, and the steel wire rope 25 is connected with a lifting part of the lifting machine.
After the material is transported to the appointed place, the resilience force of the spring 7 enables the limiting plate 3 to be attached to the top of the shaft sleeve 1, the lifting hook 8 cannot rotate under the condition of no stress due to the generated friction force, the lifting hook 8 is restored to the position parallel to the second rack 27 due to the torsion force generated by the spring 7, the pneumatic cylinder 28 is started, the end part of the pneumatic cylinder 28 drives the second rack 27 to move, the half gear 26 meshed with the second rack 27 rotates, the lifting hook 8 is driven to rotate and incline in the vertical direction, the material is separated from the opening end of the lifting hook 8, the effect of automatic unhooking of the heavy object is achieved, time and labor are saved, and the working efficiency is improved.
In order to facilitate understanding of the embodiments of the present solution by those skilled in the art, the working principle of the present solution will be briefly described with reference to a specific application scenario:
In the initial state, limiting plate 3 is supported by spring 7, the chute is not blocked with fixture block 6, lifting hook 8 can rotate at this moment, rotate lifting hook 8 and aim at the position that the goods are located, make lifting hook 8 catch on the goods, then the jack-up part carries out the jack-up, after lifting hook 8 receives the gravity of material and the pulling force of jack-up part, limiting plate 3, lifter 4, round platform piece 5, fixture block 6 moves down relative to axle sleeve 1, the removal of limiting plate 3 can make spring 7 compress, the removal of round platform piece 5 can make chute and fixture block 6 block, can prevent lifting hook 8 take place to rotate when lifting the material, because gear two 16 rotates with lifting hook 8 through mount 17 to be connected, gear two 16 and rack one 18 meshing are connected, when carrying out the jack-up, lifting hook 8 moves down, can drive gear two 16 and rotate clockwise under the effect of rack one 18, then rotate anticlockwise with gear one 15 of gear two 16 meshing, thereby make the half toothed ring 11 clockwise slip with gear two 15 meshing, finally the tip of half toothed ring 11 inserts in spread groove 13, can catch the opening of lifting hook 8, thereby the split ring 8 has reached when the safety is blocked up from the jack-up effect of lifting hook 8, the safety is prevented from getting rid of the jack-up in the process of lifting hook 8.
When the material arrives at the formulated place, the lifting hook 8 is not pulled by the gravity of the material, the resilience force of the spring 7 enables the limiting plate 3, the lifting rod 4, the round platform block 5 and the clamping block 6 to reset, the clamping block 6 is separated from the chute, the lifting hook 8 is convenient to rotate and separate from the material, when the weight is placed at the formulated place, the lifting hook 8 is not pulled by the gravity of the material, due to the resilience force of the spring 7, the lifting hook 8 moves upwards, the gear II 16 meshed with the rack I18 rotates anticlockwise, the gear I15 meshed with the gear II 16 rotates clockwise, the half toothed ring 11 meshed with the gear I15 slides anticlockwise, the half toothed ring 11 is contracted into the rotary groove 9, the opening of the lifting hook 8 is not blocked, and the material can be taken down.
The resilience force of the spring 7 enables the limiting plate 3 to be attached to the top of the shaft sleeve 1, the lifting hook 8 cannot rotate under the condition of no stress due to generated friction force, the torque force generated by the spring 7 enables the lifting hook 8 to be restored to the position parallel to the second rack 27, the pneumatic cylinder 28 is started, the end portion of the pneumatic cylinder 28 drives the second rack 27 to move, the half gear 26 meshed with the second rack 27 rotates, the lifting hook 8 is driven to rotate and incline in the vertical direction, the material is separated from the opening end of the lifting hook 8, the effect of automatic unhooking of a heavy object is achieved, time and labor are saved, and working efficiency is improved.
While the present invention has been described in detail with reference to several embodiments, the embodiments of the present invention are not limited thereto and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (8)
1. The utility model provides a bridge crane limit locking device, includes axle sleeve (1) and activity chamber (2), inside axle sleeve (1) are seted up in activity chamber (2), its characterized in that still includes:
The gravity limiting structure is arranged inside the movable cavity (2), and comprises a limiting plate (3), a lifting rod (4) and an elastic component, wherein the limiting plate (3) is slidably connected inside the movable cavity (2), the lifting rod (4) is connected with the bottom of the limiting plate (3), the lifting rod (4) is elastically connected with the inner wall of the movable cavity (2) through the elastic component, an inverted round platform block (5) is arranged at the bottom of the lifting rod (4), a plurality of clamping blocks (6) are circumferentially distributed outside the round platform block (5), the clamping blocks (6) are V-shaped blocks, a chute clamped with the clamping blocks (6) is arranged at the lower end of the shaft sleeve (1), the chute is matched with the clamping blocks (6), and a lifting hook (8) is arranged at the bottom of the round platform block (5).
The gravity self-locking structure is matched between the lifting hook (8) and the shaft sleeve (1), and is matched with the opening of the lifting hook (8).
2. The bridge crane limit locking device according to claim 1, wherein the elastic component comprises a spring (7), the spring (7) is sleeved outside the lifting rod (4), and the spring (7) is positioned between the limit plate (3) and the shaft sleeve (1).
3. The bridge crane limit locking device according to claim 1, wherein the gravity self-locking structure comprises a rotary groove (9), a half-toothed ring (11) and a driving structure, the rotary groove (9) is formed in the hook (8) in a penetrating manner, a limit component is arranged on the inner side of the rotary groove (9), a tooth slot is formed in one side of the half-toothed ring (11), the half-toothed ring (11) is connected in the rotary groove (9) through the limit component in a sliding fit manner, a connecting groove (13) matched with the half-toothed ring (11) is formed in the end portion, close to the opening, of the hook (8), a connecting through hole (10) communicated with the rotary groove (9) is formed in the outer wall of the hook (8), the driving structure is connected with the shaft sleeve (1) in a matching manner, and the driving structure penetrates through the connecting through hole (10) and is connected with the half-toothed ring (11) in a meshing manner.
4. A bridge crane limit locking device according to claim 3, wherein the limit assembly comprises an arc-shaped slide hole (12), the arc-shaped slide hole (12) is arranged on the side surface of the half-tooth ring (11) in a penetrating way, two limit guide posts (14) are fixed on the inner side of the rotary groove (9), and each limit guide post (14) is in sliding connection with the arc-shaped slide hole (12).
5. A bridge crane limit locking device according to claim 3, characterized in that the driving structure comprises a first gear (15), a second gear (16) and a first rack (18), the side face of the lifting hook (8) is connected with a fixing frame (17), the first gear (15) and the second gear (16) are both rotationally connected with the fixing frame (17), the first gear (15) is in meshed connection with the half-toothed ring (11), the second gear (16) is in meshed connection with the first gear (15), the first rack (18) is rotationally matched and connected to the outer side of the shaft sleeve (1), the side face of the first rack (18) is in meshed connection with the second gear (16), a sliding rod (21) is connected to the fixing frame (17), and the sliding rod (21) is in sliding fit connection with the first rack (18).
6. The bridge crane limit locking device according to claim 5, wherein an annular groove (20) is formed in the outer side of the shaft sleeve (1), a rotating ring (19) is rotatably connected to the inner side of the annular groove (20), and the rack I (18) is connected to the bottom end of the rotating ring (19).
7. The bridge crane limit locking device according to claim 5, wherein the sliding rod (21) is in an L-shaped rod shape, a sliding groove (22) is formed in the outer wall of the rack I (18), and the sliding rod (21) is in sliding connection with the corresponding sliding groove (22).
8. The bridge crane limit locking device according to claim 1, wherein a rotating structure is arranged above the shaft sleeve (1), the rotating structure comprises a lifting plate (24), a half gear (26) and a pneumatic cylinder (28), connecting plates (23) which are arranged in parallel with the lifting hooks (8) are respectively fixed on two sides of the top of the shaft sleeve (1), the connecting plates (23) are rotationally connected with the lifting plate (24), the half gear (26) is arranged at the top of the shaft sleeve (1), a rack II (27) meshed with the half gear (26) is horizontally arranged at the bottom of the lifting plate (24), the pneumatic cylinder (28) is fixed at the bottom of the lifting plate (24), and the driving end of the pneumatic cylinder (28) is connected with the end part of the rack II (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410787516.9A CN118479347A (en) | 2024-06-18 | 2024-06-18 | Bridge crane limiting and locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410787516.9A CN118479347A (en) | 2024-06-18 | 2024-06-18 | Bridge crane limiting and locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118479347A true CN118479347A (en) | 2024-08-13 |
Family
ID=92198328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410787516.9A Pending CN118479347A (en) | 2024-06-18 | 2024-06-18 | Bridge crane limiting and locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118479347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118992799A (en) * | 2024-10-24 | 2024-11-22 | 南通龙坤矿山机械有限公司 | Lifting hook for mine site construction tower crane |
-
2024
- 2024-06-18 CN CN202410787516.9A patent/CN118479347A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118992799A (en) * | 2024-10-24 | 2024-11-22 | 南通龙坤矿山机械有限公司 | Lifting hook for mine site construction tower crane |
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