CN217377016U - Rope-breaking anti-falling device for tower crane hook and tower crane - Google Patents
Rope-breaking anti-falling device for tower crane hook and tower crane Download PDFInfo
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- CN217377016U CN217377016U CN202221173987.3U CN202221173987U CN217377016U CN 217377016 U CN217377016 U CN 217377016U CN 202221173987 U CN202221173987 U CN 202221173987U CN 217377016 U CN217377016 U CN 217377016U
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Abstract
The application discloses tower crane lifting hook rope breakage anti-falling device and tower crane to solve because of tower crane hoisting wire rope fracture back, the malignant incident that the lifting hook (together with the thing of hanging) falls and leads to. The broken rope anti-falling device of tower crane lifting hook is used for setting up between two curb plates of lifting hook pulley both sides to be located hoisting wire rope's both sides end, the broken rope anti-falling device of tower crane lifting hook includes: the two wedge-shaped guide rails are respectively arranged on the two side plates, clamping grooves are formed in the wedge-shaped guide rails, and bases are arranged at the bottom ends of the wedge-shaped guide rails; the two self-locking wedge blocks are respectively arranged on the two wedge-shaped guide rails in a sliding manner; the two elastic pieces are respectively arranged on the bases of the two wedge-shaped guide rails; and one end of the safety component is movably arranged on the two self-locking wedge blocks, and the other end of the safety component is fixed in the clamping groove in a clamping and embedding manner through the compression elastic piece.
Description
Technical Field
The application relates to the technical field of tower cranes, in particular to a rope breaking and falling preventing device for a tower crane lifting hook and a tower crane.
Background
The main measure for preventing the falling accident of the lifting hook (together with the hoisted objects) caused by the fracture of the crane hoisting steel wire rope is to carry out visual safety inspection on the hoisting steel wire rope regularly at present, as the hoisting steel wire rope has complex wiring on a tower crane structure and a transmission mechanism, frequent operation and long distance, part of regional inspectors are difficult to reach and difficult to inspect in place, especially the internal stress generated by the hoisting steel wire rope in the use process is complex, the naked eye or common detection means cannot sense, and when the local internal stress of the hoisting steel wire rope is accumulated and reaches the limit, the hoisting steel wire rope is suddenly fractured; in the operation process, the high-altitude falling of the lifting hook (together with the hanging object) caused by the sudden fracture of the hoisting steel wire rope of the tower crane is extremely dangerous, and as the lifting hook (together with the hanging object) often passes through the overhead part of the working surface of workers, the vicious safety accident caused by the falling of the lifting hook (together with the hanging object) on the construction site often occurs, no effective solution for preventing the falling accident of the lifting hook (together with the hanging object) caused by the sudden fracture of the hoisting steel wire rope is available at present.
Disclosure of Invention
The technical problem that this application will solve lies in, to prior art not enough, provides a tower crane lifting hook rope breakage anti-falling device and tower crane to solve because of the tower crane hoisting cable fracture back, the lifting hook (together with hang the thing) fall the malignant incident that leads to.
In order to solve the technical problem, the first aspect of the embodiment of the application provides a tower crane lifting hook rope breakage anti-falling device for set up between two curb plates in lifting hook pulley both sides to be located hoisting wire rope's both sides end, tower crane lifting hook rope breakage anti-falling device includes:
the two wedge-shaped guide rails are respectively arranged on the two side plates, clamping grooves are formed in the wedge-shaped guide rails, and a base is arranged at the bottom ends of the wedge-shaped guide rails;
the two self-locking wedge blocks are respectively arranged on the two wedge-shaped guide rails in a sliding manner;
the two elastic pieces are respectively arranged on the bases of the two wedge-shaped guide rails;
and one end of the safety component is movably arranged on the two self-locking wedge blocks, and the other end of the safety component is fixed in the clamping groove in a clamping and embedding manner through an elastic piece.
In one implementation, the distance between the two wedge-shaped guide rails is smaller and smaller along the direction from one end of the wedge-shaped guide rail close to the base to the other end.
In one implementation, the ends of the two self-locking wedges remote from the hook pulley are provided with a first connection ring and a second connection ring, respectively, and the safety assembly includes:
the safety rod is used for being clamped and fixed in the clamping groove;
the bumper base is movably arranged in the first connecting ring and the second connecting ring;
and one end of the connecting rod is connected with the safety rod, and the other end of the connecting rod is connected with the safety rod base.
In one implementation, both ends of the bumper base are provided with limiting parts.
In one implementation, barbs are provided on the self-locking face of the self-locking wedge.
In one implementation, at the end away from the base, the minimum spacing between the two wedge rails is less than the sum of the lengths of the two self-locking wedges.
In one implementation, the length of the bumper base is no less than the maximum spacing between the first and second attachment rings.
In one implementation, the resilient member is a spring.
The second aspect of the embodiment of the application provides a tower crane, include lifting hook pulley, lifting hook, hoisting cable, be located two curb plates of lifting hook pulley both sides and as above a tower crane lifting hook rope breakage anti-falling device.
Has the advantages that: when the hoisting steel wire rope on one side of the hoisting hook pulley is suddenly broken, the gravity center of the hoisting hook (together with the hanging object) is instantaneously deviated, the hoisting steel wire rope on the other side is instantaneously and relatively deflected with the hoisting hook (together with the device and the hanging object) under the action of the gravity of the hoisting hook (together with the hanging object), the hoisting steel wire rope on the side is instantaneously and forcefully impacted with the safety rod of the safety component, so that the safety rod is separated from the clamping groove of the wedge-shaped guide rail, at the moment, the elastic potential energy of the elastic part compressed by the safety component is immediately released, and therefore the two self-locking wedges are rapidly pushed to move on the two wedge-shaped guide rails along the direction of reducing the distance between the two self-locking wedges until the distance between the two self-locking wedges is smaller than the diameter of the hoisting steel wire rope, and because the contact surfaces of the two self-locking wedges and the hoisting steel wire rope are provided with needle-shaped barbs, under the action of the gravity of the hoisting hook (together with the hanging object) and the action of huge friction force between the two self-locking wedges and the hoisting steel wire rope, the distance between the two self-locking wedge blocks is gradually decreased to lock the hoisting steel wire rope, so that the self-locking function is realized, and the lifting hook (together with a hanging object) is hung on the hoisting steel wire rope on one side which is not broken in a short time and cannot fall off under the condition of avoiding large impact.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without any inventive work.
FIG. 1 is a schematic structural view of a rope breakage and falling prevention device of a tower crane hook provided by the application, which is installed on the hook when a hoisting steel wire rope is in a normal state.
Fig. 2 is the tower crane lifting hook rope breakage anti-falling device who provides in this application installs the schematic structure on the lifting hook under hoisting wire rope is in one side rupture state.
Fig. 3 is a schematic structural diagram that the rope breakage and falling prevention device for the tower crane hook provided by the application is installed between hook pulley side plates and located at two side ends of a hoisting steel wire rope.
Fig. 4 is the tower crane lifting hook rope breakage anti-falling device who provides this application and is in the schematic structure diagram of draw-in groove under the operating condition of awaiting orders.
FIG. 5 is a schematic structural diagram of a safety lever in a relaxed state when the rope-breaking and anti-falling device for a tower crane hook is in a non-working state before installation.
Fig. 6 is a schematic structural diagram of a broken hoisting steel wire rope embraced by the tower crane hook rope-breaking and falling-preventing device in a working state after a safety lever is triggered.
In the figure: 01. a hoisting wire rope; 02. a hook pulley; 03. a hook; 04. a side plate; 10. a wedge-shaped guide rail; 101. a card slot; 20. self-locking wedge blocks; 201. a first connecting ring; 202. a second connection ring; 203. a barb; 30. an elastic member; 401. a bumper; 402. a bumper base; 403. a connecting rod; 50. a base; 60. a limiting part.
Detailed Description
The application provides a tower crane lifting hook rope breakage anti-falling device and tower crane, for making the purpose, technical scheme and the effect of this application clearer, make clear more, the following reference to the attached drawing and the embodiment of lifting is to this application further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The following further describes the content of the application by describing the embodiments with reference to the attached drawings.
A first aspect of the present embodiment provides a rope breakage and falling prevention device for a tower crane hook, as shown in fig. 1, fig. 2, and fig. 4, fig. 1 is a schematic structural view of a hoisting steel wire rope 01 installed on a hook in a normal state, the hoisting steel wire rope 01 is connected to a hook 03 and a hanging object through components such as a hook pulley 02 and side plates 04, and the two rope breakage and falling prevention devices for a tower crane hook are installed between two side plates 04, and are located on two sides of the hoisting steel wire rope 01; fig. 2 is a schematic structural diagram of a hoisting cable 01 mounted on a hook in a state of one side being broken, in order to solve a serious safety accident caused by falling of the hook (together with a hanging object) after the tower crane hoisting cable 01 is broken, two tower crane hook broken rope falling prevention devices are symmetrically arranged between two side plates 04 at two sides of a hook pulley 02 and at two ends of the hoisting cable 01 in the embodiment, as shown in fig. 3; the rope breaking and falling preventing device for the tower crane hook comprises two wedge-shaped guide rails 10, two self-locking wedges 20, two elastic pieces 30 and a safety component, wherein the two wedge-shaped guide rails 10 are respectively and fixedly arranged on two side plates 04, guide grooves are formed in the two self-locking wedges 20, the two self-locking wedges 20 are respectively and slidably arranged on the two wedge-shaped guide rails 10 through the guide grooves, a base 50 is arranged at the bottom end of each wedge-shaped guide rail 10, in the embodiment, the two elastic pieces 30 can be respectively and fixedly arranged on the bases 50 of the two wedge-shaped guide rails 10, one end of each elastic piece 30 can be arranged on the base 50, the other end of each elastic piece 30 is arranged on the self-locking wedges 20, and the elastic pieces 30 can be prevented from being pulled and damaged by respectively and fixedly arranging the two elastic pieces 30 on the bases 50, the service life of the elastic piece 30 is ensured; the two wedge-shaped guide rails 10 are respectively provided with a clamping groove 101, one end of the safety component is a safety rod base 402 and is movably arranged on the two self-locking wedge blocks 20, and the other end of the safety component is a safety rod 401 and is fixedly clamped in the clamping groove 101 through an elastic piece 30. In this embodiment, when the safety assembly is inserted and fixed in the slot 101, the elastic member 30 is compressed, and at this time, the rope breaking and falling preventing device of the tower crane hook is in a standby working state; as shown in fig. 2, when the hoisting cable 01 on one side of the hook pulley 02 suddenly breaks, the center of gravity of the hook (together with the hanging object) instantly deviates, the hoisting cable 01 on the other side (the non-broken side) greatly deflects under the action of the gravity of the hook (together with the hanging object), the hoisting cable 01 on the side instantly and strongly impacts the safety rod 401, so that the safety rod 401 falls off from the slot 101 of the wedge-shaped guide rail 10, and at this time, the elastic potential energy of the compressed elastic member 30 is immediately released, thereby rapidly pushing the two self-locking wedges 20 to move on the two wedge-shaped guide rails 10 in the direction of reducing the distance between the two self-locking wedges until the distance between the two self-locking wedges 20 is smaller than the diameter of the hoisting cable, and holding the hoisting cable due to the needle-like barbs on the contact surfaces of the two self-locking wedges 20 and the hoisting cable 01, under the action of the gravity of the hook (together with the hanging object) and the action of huge friction between the two self-locking wedges 20 and the hoisting cable 01, the distance between the two self-locking wedges 20 is gradually decreased until the hoisting steel wire rope 01 is locked, so that the self-locking function is realized, and the lifting hook (together with the hoisted object) is hung on the hoisting steel wire rope on the side which is not broken in a short time and under the condition of avoiding large impact and cannot fall. In addition, it is worth to be noted that, because the safety coefficient of the tower crane hoisting steel wire rope 01 is greater than or equal to 6 (national standard), and the ratio of the breaking force of the single-side steel wire rope to the rated hoisting weight is greater than or equal to 3, even if the lifting hook (together with the hoisted object) is under the condition of the maximum rated load, the single-side steel wire rope can be prevented from falling under the condition of small impact.
As shown in fig. 5, in this embodiment, the first connecting ring 201 and the second connecting ring 202 are respectively disposed at one end of the two self-locking wedges 20 away from the hook pulley 02, the safety assembly includes a safety rod 401, a safety rod base 402 and a connecting rod 403, the safety rod 401 is configured to be fixed in the clamping groove 101 in a snap-fit manner, the diameter of the safety rod base 402 is slightly smaller than the inner diameter of the first connecting ring 201 and the second connecting ring 202, that is, the safety rod base 402 has a gap with the first connecting ring 201 and the second connecting ring 202, the safety rod base 402 is movably disposed in the first connecting ring 201 and the second connecting ring 202 through the gap, one end of the connecting rod 403 is connected to the safety rod 401, and the other end of the connecting rod 403 is connected to the safety rod base 402.
As shown in fig. 4, in the present embodiment, the length of the bumper base 402 is not less than the maximum distance between the first connecting ring 201 and the second connecting ring 202, wherein the maximum distance between the first connecting ring 201 and the second connecting ring 202 is the distance between the two self-locking wedges 20 respectively sliding to the lower ends of the two wedge rails 10, and by maximizing the distance between the first connecting ring 201 and the second connecting ring 202 generated when the elastic member 30 is compressed to approach the base 50, when the distance between the first connecting ring 201 and the second connecting ring 202 is maximized, the bumper base 402 can still be located on the first connecting ring 201 and the second connecting ring 202, that is, the bumper base 402 can still be located on the two self-locking wedges 20, so that the bumper 401 is connected with the two self-locking wedges 20, thereby realizing that the push-down bumper 401 is inserted into the slot 101 of the wedge rail 10, the bumper base 402 does not separate from the two self-locking wedges 20, so that the bumper 401 can drive the two self-locking wedges 20 to move to compress the elastic member 30 to accumulate potential energy, and energy is provided for holding the hoisting steel wire rope 01 when the hoisting steel wire rope 01 is broken.
Further, both ends of the bumper base 402 are provided with the limiting portions 60, and in this embodiment, the limiting portions 60 are provided to further prevent the bumper base 402 from being separated from the first connecting ring 201 and the second connecting ring 202 on the two self-locking wedges 20, so as to further ensure that after the bumper base 401 is pressed down and clamped into the clamping groove 101 of the wedge-shaped guide rail 10, the bumper 401 can drive the two self-locking wedges 20 to move and compress the elastic member 30 to accumulate potential energy, thereby providing energy for holding the lifting steel wire rope 01 when the lifting steel wire rope 01 is broken.
As shown in fig. 4-6, in this embodiment, the distance between the two wedge-shaped guide rails 10 is smaller and smaller in the direction from the end of the wedge-shaped guide rail 10 close to the base 50 to the other end, so that when one side of the hoisting cable 01 is broken and the hoisting cable 01 on the unbroken side hits the safety rod 401 to make the safety rod 401 fall off from the slot 101, the elastic member 30 jacks the self-locking wedge 20 to move toward the side where the distance between the two wedge-shaped guide rails 10 is reduced, so that the distance between the two self-locking wedges 20 is reduced to be smaller than the diameter of the hoisting cable 01, so as to hold the hoisting cable 01 and prevent the hook (together with the hanging object) from falling.
As shown in fig. 6, in this embodiment, at the end far from the base 50, the minimum distance between the two wedge-shaped guide rails 10 is smaller than the sum of the lengths of the two self-locking wedges 20, so as to prevent the self-locking wedges 20 from falling off from the upper end of the wedge-shaped guide rails 10, and ensure the normal use of the rope breakage and fall prevention device for the tower crane hook.
As shown in fig. 4, in this embodiment, the auto-lock face of auto-lock voussoir 20 is provided with barb 203, the barb is the needle-like barb, wherein, the auto-lock face is respective looks face between two auto-lock voussoirs 20, through the setting of needle-like barb 203, has improved the connecting friction between two auto-lock voussoirs 20 and hoisting cable 01, and then has improved tower crane lifting hook 03 disconnected rope anti-falling device's closure dynamics.
In one embodiment, the resilient member 30 is a spring.
The working principle of the rope breaking and falling preventing device for the tower crane lifting hook is as follows:
as shown in fig. 5, in the non-operating state, the safety lever 401 is in a natural loose state, and the two self-locking wedges 20 are supported by the springs and are also in a natural loose state along the two wedge-shaped guide rails 10, and at this time, the springs only bear a slight pressure which does not exceed the self-weight of the self-locking wedges 20.
As shown in fig. 4, in the standby operating state, the safety component is pressed down, because the safety component is connected with the two self-locking wedges 20 through the first connecting ring and the second connecting ring, the two self-locking wedges 20 can be further pushed to move downwards along the two wedge-shaped guide rails 10 respectively, and the spring on the base 50 is compressed, at this time, the distance between the self-locking surfaces of the two self-locking wedges 20 with the needle-shaped barbs 203 is gradually increased, when the safety rod 401 of the safety component is embedded into the clamping groove 101 of the wedge-shaped guide rail 10, at this time, the distance between the self-locking surfaces of the two self-locking wedges 20 with the needle-shaped barbs 203 is greater than the diameter of the hoisting steel wire rope 01, the pressing down is stopped, and the spring is compressed and accumulates greater potential energy.
As shown in fig. 6, in a triggered working state, when a hoisting steel wire rope 01 on one side of a tower crane hook is suddenly broken, the center of gravity of the hook (together with a hanging object) is instantaneously shifted, the hoisting steel wire rope 01 on the other side is greatly deflected relative to the angle of the hook (together with the device and the hanging object) under the action of the gravity of the hook (together with the hanging object), the hoisting steel wire rope 01 on the side is instantaneously and strongly impacted on a safety rod 401 of a safety assembly, so that the safety rod 401 falls off from a clamping groove 101 of a wedge-shaped guide rail 10, at the moment, compressed spring potential energy is immediately released, thereby pushing two self-locking wedges 20 to move upwards along two wedge-shaped guide rails 10, simultaneously, the distance between self-locking surfaces of two self-locking wedges 20 with barbs 203 is instantaneously reduced, and when the distance between the self-locking surfaces is smaller than the diameter of the hoisting steel wire rope 01, the two self-locking wedges 20 are under the action of the needle-locking barbs 203, the hoisting steel wire rope 01 is embraced by large friction force, and simultaneously, under the action of gravity of the lifting hook (together with a hanging object), the lifting hook (together with the hanging object) drives the two wedge-shaped guide rails 10 to move downwards, and because the upper space between the wedge-shaped guide rails 10 is smaller and smaller, the hoisting steel wire rope 01 is embraced more and more tightly, and the self-locking function is realized.
In summary, the present embodiment provides a rope breakage and falling prevention device for a tower crane hook, the rope breakage and falling prevention device for a tower crane hook comprises two wedge-shaped guide rails 10, two self-locking wedges 20, two elastic members 30 and a safety assembly, the two wedge-shaped guide rails 10 are respectively arranged on two side plates 04, guide grooves for matching the wedge-shaped guide rails are formed on the two self-locking wedges 20, the two self-locking wedges 20 are respectively slidably arranged on the two wedge-shaped guide rails 10 through the guide grooves, a base 50 is arranged on the bottom end of the wedge-shaped guide rail 10, the two elastic members 30 are respectively fixedly arranged on the bases 50 of the two wedge-shaped guide rails 10, a slot 101 is formed in each of the two wedge-shaped guide rails 10, one end of the safety assembly is movably arranged on the two self-locking wedges 20, the other end of the safety assembly is fixedly embedded in the slot 101 through the compression elastic member 30, when the safety assembly is fixedly embedded in the slot 101, the elastic member 30 is compressed, when the hoisting cable 01 on one side of the hoisting pulley 02 is suddenly broken, the center of gravity of the hoisting hook (together with the hoisted object) is instantaneously shifted, the hoisting cable 01 on the other side is greatly deflected under the action of the gravity of the hoisting hook (together with the hoisted object), the hoisting cable 01 on the side is instantaneously and forcefully impacted on the safety component, so that the safety component is separated from the clamping groove 101 of the wedge-shaped guide rail 10, the elastic potential energy of the compressed elastic member 30 is immediately released, the two self-locking wedges 20 are pushed to move on the two wedge-shaped guide rails 10 along the direction of reducing the distance between the two self-locking wedges 20 until the distance between the two self-locking wedges 20 is smaller than the diameter of the hoisting cable 01, the hoisting cable 01 is held by the hoisting cable 01, and the hoisting hook (together with the hoisted object) on the hoisting cable 01 is hung on the hoisting cable 01 without falling, because the safety coefficient of the tower crane hoisting steel wire rope 01 is more than or equal to 6 (national standard), the ratio of the breaking force of the unilateral steel wire rope to the rated hoisting weight is more than or equal to 3, even if the lifting hook (together with the hoisted object) is under the condition of the rated load at the limit, the unilateral steel wire rope can also prevent the lifting hook (together with the hoisted object) from falling.
The second aspect of this embodiment provides a tower crane, including hook pulley, lifting hook, hoisting cable, be located two curb plates of hook pulley both sides and as above the tower crane lifting hook rope breakage anti-falling device.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (9)
1. The utility model provides a tower crane lifting hook anti-falling device that restricts absolutely for set up between two curb plates of lifting hook pulley both sides to be located hoisting wire rope's both sides end, its characterized in that, tower crane lifting hook anti-falling device that restricts absolutely includes:
the two wedge-shaped guide rails are respectively arranged on the two side plates, clamping grooves are formed in the wedge-shaped guide rails, and a base is arranged at the bottom ends of the wedge-shaped guide rails;
the two self-locking wedge blocks are respectively arranged on the two wedge-shaped guide rails in a sliding manner;
the two elastic pieces are respectively arranged on the bases of the two wedge-shaped guide rails;
and one end of the safety component is movably arranged on the two self-locking wedge blocks, and the other end of the safety component is fixed in the clamping groove in a clamping and embedding manner through an elastic piece.
2. The rope breaking and falling preventing device for the tower crane lifting hook as claimed in claim 1, wherein the distance between the two wedge-shaped guide rails is gradually reduced along the direction from one end of the wedge-shaped guide rail close to the base to the other end of the wedge-shaped guide rail.
3. The tower crane lifting hook rope breakage and falling prevention device as claimed in claim 1, wherein one ends of the two self-locking wedges far away from the lifting hook pulley are respectively provided with a first connecting ring and a second connecting ring, and the safety assembly comprises:
the safety rod is used for being clamped and fixed in the clamping groove;
the bumper base is movably arranged in the first connecting ring and the second connecting ring;
and one end of the connecting rod is connected with the safety rod, and the other end of the connecting rod is connected with the safety rod base.
4. The tower crane lifting hook rope-breaking and falling-preventing device as claimed in claim 3, wherein both ends of the base of the safety rod are provided with limiting parts.
5. The rope breaking and falling preventing device for the tower crane lifting hook as claimed in claim 1, wherein the self-locking surface of the self-locking wedge block is provided with barbs.
6. The tower crane lifting hook rope breakage and falling prevention device as claimed in claim 1, wherein the minimum distance between the two wedge-shaped guide rails is smaller than the sum of the lengths of the two self-locking wedges at the end far away from the base.
7. The tower crane lifting hook rope breakage and falling prevention device as claimed in claim 3, wherein the length of the bumper base is not less than the maximum distance between the first connecting ring and the second connecting ring.
8. The tower crane hook rope breakage and falling prevention device as claimed in claim 1, wherein the elastic member is a spring.
9. A tower crane, which is characterized by comprising a hook pulley, a hook, a hoisting steel wire rope, two side plates positioned at two sides of the hook pulley and the rope breakage and falling prevention device of the tower crane hook as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221173987.3U CN217377016U (en) | 2022-05-16 | 2022-05-16 | Rope-breaking anti-falling device for tower crane hook and tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221173987.3U CN217377016U (en) | 2022-05-16 | 2022-05-16 | Rope-breaking anti-falling device for tower crane hook and tower crane |
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| Publication Number | Publication Date |
|---|---|
| CN217377016U true CN217377016U (en) | 2022-09-06 |
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| CN202221173987.3U Active CN217377016U (en) | 2022-05-16 | 2022-05-16 | Rope-breaking anti-falling device for tower crane hook and tower crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117142375A (en) * | 2023-11-01 | 2023-12-01 | 南通中远海运重工装备有限公司 | Portal type lifting equipment for slope operation |
-
2022
- 2022-05-16 CN CN202221173987.3U patent/CN217377016U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117142375A (en) * | 2023-11-01 | 2023-12-01 | 南通中远海运重工装备有限公司 | Portal type lifting equipment for slope operation |
| CN117142375B (en) * | 2023-11-01 | 2024-01-05 | 南通中远海运重工装备有限公司 | Portal type lifting equipment for slope operation |
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