Tower crane hook

Abstract

The utility model discloses a tower crane lifting hook, and relates to the technical field of lifting hook devices. The utility model provides a tower crane lifting hook which comprises a hook body, a lifting rod and a lifting rod, the hook body is provided with a containing groove used for containing a hanging rope, the containing groove is provided with an inlet and outlet, a baffle is arranged at the inlet and outlet, the first end of the baffle is hinged to the hook body, and the second end of the baffle is a free end; the hook body is provided with a locking piece, and the locking piece can move in the direction close to or away from the passageway. A pull rope is further arranged on the outer wall of the hook body, the first end of the pull rope is connected with a retractor, the second end of the pull rope is connected with the locking piece, and the two ends of the pull rope are located on the two sides of the inlet and outlet of the containing groove respectively. The pull rope is adjusted from the first state to the second state, the part, located on the periphery of the bottom of the containing groove, of the pull rope moves in the direction close to the passageway, and the pull rope drives the locking piece to be away from the passageway so as to relieve the limiting state of the locking piece and the baffle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hook devices, in particular to a tower crane hook. BACKGROUND

[0002] In the existing tower crane and other hoisting equipment, the hook as a key component undertakes the important task of hoisting heavy objects. In order to ensure the safety during hoisting, the design of the hook usually contains a mechanism to prevent the rope from accidentally falling off. A common design is to set a baffle at the entrance and exit of the hook body. The main purpose of this baffle design is to physically block the rope during hoisting through the baffle, thereby effectively preventing the rope from accidentally falling off the hook due to external force or improper operation, ensuring the safe performance of hoisting operations.

[0003] However, after the hoisting operation is completed, the rope needs to be removed from the hook for subsequent loading or unloading operations. In this process, the operator not only needs to apply external force to the baffle to change its position, but also needs to simultaneously or subsequently apply external force to the rope to remove it from the hook. This multi-step operation process not only increases the physical burden of the operator, but also may cause the rope to fall off or be damaged due to improper operation or inaccurate external force application, thereby causing safety hazards to the operator and the surrounding environment. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the present application is to provide a tower crane hook, which aims to simplify the process of removing the rope, reduce the labor intensity, and improve the safety and efficiency of hoisting operations

[0005] To achieve the above purpose, the present application provides a tower crane hook, comprising:

[0006] a hook body having a containing groove for containing a rope, the containing groove having an entrance and exit, a baffle being provided at the entrance and exit, a first end of the baffle being hinged to the hook body, and a second end of the baffle being a free end;

[0007] wherein the hook body is provided with a locking member, which can move in the direction of approaching or moving away from the entrance and exit;

[0008] the outer wall of the hook body is further provided with a pull rope, a first end of the pull rope being connected with a retractor, a second end of the pull rope being connected with the locking member, and the two ends of the pull rope being located on the two sides of the entrance and exit of the containing groove, respectively;

[0009] when the pull rope is in a first state, part of the pull rope is located at the periphery of the bottom of the containing groove, the locking member protrudes in the direction of the entrance and exit and forms a limiting structure with the second end of the baffle;

[0010] By the retractor, the pull rope is adjusted from the first state to the second state, so that the part of the pull rope located at the periphery of the bottom of the accommodating groove is moved in the direction close to the exit, and the pull rope drives the locking member to move in the direction away from the exit, so as to release the state that the locking member is limited by the baffle.

[0011] Optionally, the hook body is provided with a rotating shaft, the first end of the baffle is hinged to the hook body through the rotating shaft, a torsional spring is sleeved on the rotating shaft, and two force arms of the torsional spring are respectively abutted against the baffle and the hook body, so that the second end of the baffle has a tendency to rotate in the direction away from the exit.

[0012] Optionally, the inner side wall of the accommodating groove is provided with a guide groove, the guide groove is communicatively provided with a limiting groove, the locking member penetrates through the guide groove, one end of the locking member located in the limiting groove is provided with a limiting plate, a compression spring is arranged between the inner wall of the limiting groove away from the guide groove and the limiting plate, the side wall of the limiting groove is provided with a through hole penetrating through the hook body, and the pull rope and the limiting plate are connected to each other through the through hole.

[0013] Optionally, the width of the limiting groove is greater than the width of the guide groove, and the extending direction of the limiting groove is the same as the extending direction of the guide groove.

[0014] Optionally, one end of the locking member away from the limiting plate and located close to one side of the accommodating groove is provided with a first limiting surface, the second end of the baffle is provided with a second limiting surface, and the second limiting surface is abutted against the first limiting surface to form a limiting structure.

[0015] Optionally, the locking member has a first inclined wedge surface opposite to the first limiting surface, the baffle has a second inclined wedge surface opposite to the second limiting surface, and the second inclined wedge surface can be abutted against the first inclined wedge surface to guide the locking member to move in the direction close to the limiting groove, so that the second end of the baffle can be moved from one side of the locking member to the other side.

[0016] Optionally, the outer wall of the hook body is provided with a support, the support is provided with a rotatable pulley, and the second end of the pull rope is connected to the limiting plate through the pulley, so that the extending direction of the part of the pull rope between the pulley and the limiting plate is the same as the extending direction of the guide groove.

[0017] Optionally, the outer wall of the hook body is further provided with a rotatable tensioning wheel, and the second end of the pull rope is connected to the locking member after sequentially passing through the tensioning wheel and the pulley.

[0018] Optionally, an outer wall of the hook body is provided with at least one tension spring, one end of the at least one tension spring is connected with the hook body, and the other end of the at least one tension spring is sleeved on the pull rope.

[0019] Optionally, the retractor comprises a driving motor, an output shaft of the driving motor is sleeved with a retraction wheel, and the first end of the pull rope is connected with the retraction wheel.

[0020] The application can achieve the following beneficial effects:

[0021] The hook of the application is provided with a pull rope on the hook body, the pull rope can drive the locking piece to move, when the pull rope is in the first state, the locking piece protrudes in the accommodating groove, the part of the locking piece protruding in the accommodating groove can form a limiting structure with the second end of the baffle, at this time, the baffle can limit the hanging rope in the accommodating groove; when the retractor retracts the pull rope, the pull rope is in transition from the first state to the second state, in the process of gradually tightening the pull rope, the part of the pull rope at the outer periphery of the bottom of the accommodating groove can drive the hanging rope in the accommodating groove to move synchronously along the position of the entrance and exit, and the second end of the pull rope drives the locking piece to retreat, thereby removing the limiting effect of the locking piece on the baffle, the baffle loses the blocking effect on the hanging rope, so that the hanging rope can be smoothly moved out of the entrance and exit, without manually applying an inward external force to the baffle, and then moving the hanging rope upward from the bottom of the accommodating groove, thereby reducing the labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the hook of the application;

[0023] Figure 2 It is a partial sectional view schematic diagram of the hook of the application;

[0024] Figure 3 It is Figure 2 It is an enlarged structural schematic diagram of A in FIG. 4.

[0025] In the figure, the reference signs are:

[0026] 10-hook body, 11-accommodating groove, 20-baffle, 21-rotating shaft, 22-torsional spring, 30-locking piece, 31-first inclined wedge surface, 32-first limiting surface, 33-second inclined wedge surface, 34-second limiting surface, 40-pull rope, 41-driving motor, 42-retraction wheel, 43-tension spring, 44-tensioning wheel, 45-bracket, 46-pulley, 50-limiting plate, 60-compression spring, 70-guiding groove, 71-limiting groove, 72-through hole.

[0027] The implementation, functional features and advantages of the application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0030] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal communication of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, if the present application embodiments involve "first", "second" and the like, the "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0032] Embodiment 1

[0033] Reference Figures 1-3The first embodiment of this application provides a tower crane hook, comprising: a hook body 10 having a receiving groove 11 for accommodating a hanging rope, the receiving groove 11 having an inlet and an outlet, a baffle 20 being provided at the inlet and an outlet, the first end of the baffle 20 being hinged to the hook body 10, and the second end of the baffle 20 being a free end; wherein, the hook body 10 is provided with a locking member 30, the locking member 30 being movable in a direction approaching or away from the inlet and an outlet; the outer wall of the hook body 10 is also provided with a pull rope 40, the first end of the pull rope 40 being connected to a retractor, and the second end of the pull rope 40 being connected to the locking member 30. The two ends of the pull rope 40 are located on both sides of the entrance and exit of the receiving groove 11. When the pull rope 40 is in the first state, part of the pull rope 40 is located at the bottom periphery of the receiving groove 11, and the locking member 30 protrudes in the direction of the entrance and exit and forms a limiting structure with the second end of the baffle 20. Through the retractor, the pull rope 40 is adjusted from the first state to the second state, so that the part of the pull rope 40 located at the bottom periphery of the receiving groove 11 moves in the direction close to the entrance and exit, and the pull rope 40 drives the locking member 30 in the direction away from the entrance and exit, so as to release the state of the locking member 30 and the baffle 20 being limited.

[0034] In this embodiment, the upper end of the hook 10 is provided with a mounting hole for mounting the hook 10 onto a tower crane. The hook 10 has a receiving groove 11, and when lifting items using the hook 10, the items are suspended into the receiving groove 11 by means of a hanging rope. Figure 1 As shown, the upper end of the baffle 20 is the first end, and the lower end of the baffle 20 is the second end. The baffle 20 can block the entrance and exit, that is, the baffle 20 can prevent the hanging rope from accidentally moving out of the receiving groove 11. When the pull rope 40 is in the first state (e.g. Figure 1 As shown, the pull cord 40 is in a slack state, the hanging rope is located in the receiving groove 11, and the hanging rope is located in the space between the pull cord 40 and the baffle 20. The first end of the pull cord 40 is the left end, and the second end is the right end. The second end of the pull cord 40 is connected to the locking member 30. When the pull cord 40 is in the second state (not shown in the figure), the pull cord 40 is in a taut state and the pull cord 40 crosses the receiving groove 11. When the retractor winds up the pull cord 40, the pull cord 40 transitions from the first state to the second state. During the transition, the length of the pull cord 40 gradually decreases, and the pull cord 40 gradually tightens from a slack state. During the tightening process, that is, the distance between the part of the pull cord 40 located at the bottom periphery of the receiving groove 11 and the baffle 20 gradually decreases, the pull cord 40 can push the hanging rope located in the receiving groove 11 to move in the direction close to the baffle 20. It should be noted that during the above process, when the weight of the item is relatively heavy, the weight of the item is provided by the ground or other placement surface, that is, the hanging rope is usually only subject to its own weight, so as to ensure that the pull rope 40 can push the hanging rope to move along the direction of the baffle 20.

[0035] During the transition from the first state to the second state, the pull rope 40 is gradually tightened to enable the pull rope 40 to pull the locking piece 30 to move, the locking piece 30 to be separated from the baffle 20, and the locking state of the locking piece 30 and the baffle 20 to be released. At this time, the baffle 20 loses the limiting effect on the hanging rope, so that the hanging rope can be smoothly removed from the exit and entrance to the accommodation groove 11. That is, under the action of the winder, the pull rope 40 is gradually wound on the winder, which can simultaneously release the limiting effect of the locking piece 30 on the baffle 20 and drive the hanging rope to move in the direction of the exit and entrance. It is not necessary to manually apply an external force to the baffle 20, and the external force required for manually taking out the hanging rope from the accommodation groove 11 is reduced, the labor intensity of manual work is reduced, and the hoisting efficiency is improved. It should be noted that the winder can be one of an electric hoist, a hydraulic cylinder, an air cylinder, an electric push-pull rod, or a driving motor 41.

[0036] Embodiment 2

[0037] As an optional implementation, the embodiment provides a specific structure of the baffle 20, which comprises: a rotating shaft 21 arranged on the hook body 10, a first end of the baffle 20 being hinged to the hook body 10 through the rotating shaft 21, and a torsional spring 22 being sleeved on the rotating shaft 21, two force arms of the torsional spring 22 being respectively abutted against the baffle 20 and the hook body 10, so that a second end of the baffle 20 has a tendency to rotate away from the exit and entrance.

[0038] In the embodiment, the upper end of the baffle 20 is connected to the rotating shaft 21, and the lower end of the baffle 20 can rotate around the axis of the rotating shaft 21. The torsional spring 22 is sleeved on the rotating shaft 21, one of the force arms of the torsional spring 22 is abutted against one side of the inner wall of the accommodation groove 11, and the other force arm of the torsional spring 22 is abutted against the lower end of the baffle 20. The torsional spring 22 applies an external force to the baffle 20 to rotate counterclockwise, so that the baffle 20 always has a tendency to rotate outward, to ensure that the baffle 20 can always block the exit and entrance during hoisting.

[0039] Embodiment 3

[0040] As an optional implementation, the embodiment provides a mounting structure of the locking piece 30, which comprises: a guide groove 70 arranged on the inner side wall of the accommodation groove 11, the guide groove 70 being communicatively provided with a limiting groove 71, the locking piece 30 penetrating through the guide groove 70, one end of the locking piece 30 located in the limiting groove 71 being provided with a limiting plate 50, a compression spring 60 being arranged between the inner wall of the limiting groove 71 away from the guide groove 70 and the limiting plate 50, a through hole 72 of the limiting groove 71 being provided with a through hole 72 penetrating through the hook body 10, and the pull rope 40 being connected to the limiting plate 50 through the through hole 72.

[0041] Optionally, the width of the limiting groove 71 is greater than the width of the guide groove 70, and the extension direction of the limiting groove 71 is the same as the extension direction of the guide groove 70.

[0042] Specifically, as shown in the figure, a guide groove 70 is formed on the hook body 10. A limiting groove 71 is also formed on the hook body 10, which is in communication with the guide groove 70. The position where the limiting groove 71 communicates with the guide groove 70 forms a step, which limits the maximum position of the upward movement of the locking piece 30. By setting the compression spring 60, the locking piece 30 always has a tendency to move upward, avoiding the situation that the locking piece 30 accidentally moves downward during hoisting, and ensuring that the locking piece 30 can limit the baffle 20. Figure 3

[0043] Optionally, the end of the locking piece 30 away from the limiting plate 50 and located close to the accommodating groove 11 is provided with a first limiting surface 32, and the second end of the baffle 20 is provided with a second limiting surface 34, which abuts against the first limiting surface 32 to form a limiting structure.

[0044] Specifically, the first limiting surface 32 and the second limiting surface 34 are both flat surfaces. When the first limiting surface 32 abuts against the second limiting surface 34, the locking piece 30 blocks the baffle 20 from continuing to move outward, so that the baffle 20 can maintain the state of blocking the entrance, preventing the hanging rope from moving out of the accommodating groove 11.

[0045] Optionally, the locking piece 30 has a first inclined wedge surface 31 opposite the first limiting surface 32, and the baffle 20 has a second inclined wedge surface 33 opposite the second limiting surface 34, which can abut against the first inclined wedge surface 31 to guide the locking piece 30 to move in the direction close to the limiting groove 71, so that the second end of the baffle 20 can move from one side of the locking piece 30 to the other side.

[0046] Specifically, by setting the first inclined wedge surface 31 and the second inclined wedge surface 33, before hoisting begins, the baffle 20 is first located on the right side of the locking piece 30, and the entrance is in an open state, so that the hanging rope can enter the accommodating groove 11 through the entrance. After the hanging rope enters the accommodating groove 11, an external force is applied to the baffle 20 to the left, the second inclined wedge surface 33 of the baffle 20 abuts against the first inclined wedge surface 31 of the locking piece 30, and the baffle 20 continuously moves, during which the baffle 20 applies a pushing force to the locking piece 30, causing the locking piece 30 to move downward. When the baffle 20 moves to the left side of the locking piece 30, the locking piece 30 can automatically pop out under the action of the compression spring 60, and the first limiting surface 32 of the locking piece 30 abuts against the second limiting surface 34 of the baffle 20 to form a limiting structure.

[0047] Optionally, the outer wall of the hook body 10 is provided with a bracket 45, the bracket 45 is provided with a rotatable pulley 46, and the second end of the pull rope 40 is connected with the limiting plate 50 through the pulley 46, so that the extension direction of the part of the pull rope 40 between the pulley 46 and the limiting plate 50 is the same as the extension direction of the guide groove 70. ​

[0048] Optionally, the outer wall of the hook body 10 is further provided with a rotatable tension pulley 44, and the second end of the pull rope 40 is connected with the locking member 30 after sequentially passing through the tension pulley 44 and the pulley 46.

[0049] Specifically, the pulley 46 is supported by the support 45. The tension pulley 44 and the pulley 46 limit the arrangement path of the pull rope 40, so that the retractor is located at the upper end of the hook body 10. The pull rope 40 is connected with the limiting plate 50, and the retractor applies an external force to the pull rope 40, so that the end of the pull rope 40 connected with the limiting plate 50 can apply a downward pulling force to the limiting plate 50. The pulley 46 is arranged to make the extension direction of the pull rope 40 the same as the extension direction of the guide groove 70, so that the movement of the limiting plate 50 and the locking member 30 is smoother and the friction is reduced when the pull rope 40 applies an external force to the limiting plate 50.

[0050] Embodiment 4

[0051] As an optional embodiment, the embodiment provides a specific structure of the tension spring 43, which comprises: the outer wall of the hook body 10 is provided with at least one tension spring 43, one end of the at least one tension spring 43 is connected with the hook body 10, and the other end of the at least one tension spring 43 is sleeved on the pull rope 40.

[0052] Specifically, the pull rope 40 is transitioned from the first state to the second state by the tension spring 43, and the pull rope 40 returns to the first state under the cooperation of the tension spring 43 and the hanging rope when the retractor cancels the pulling force on the pull rope 40, so as to facilitate repeated use.

[0053] Optionally, the retractor comprises a driving motor 41, and the output shaft of the driving motor 41 is sleeved with a retraction wheel 42, and the first end of the pull rope 40 is connected with the retraction wheel 42.

[0054] Specifically, the above is one of the structure forms of the retractor, and the stability of the pull rope 40 during the retraction process is improved by the driving motor 41 and the retraction wheel.

[0055] The above is only a preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the contents of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A tower crane hook, characterized in that, The utility model relates to a hook body has the accommodation slot for accommodating the hanging rope, and the accommodation slot has the entrance and exit, and the entrance and exit are provided with the baffle, and the first end of baffle is articulated with the hook body, and the second end of baffle is the free end. Wherein, the hook body is provided with locking piece, and locking piece can move along the direction close to or away from the entrance and exit; The outer wall of the hook body is further provided with a pull rope, the first end of the pull rope is connected with a retractor, the second end of the pull rope is connected with the locking piece, and the two ends of the pull rope are located on both sides of the entrance and exit of the accommodation slot respectively; When the pull rope is in the first state, the part of the pull rope is located at the bottom of the accommodation slot, the locking piece protrudes towards the entrance and exit and forms a limiting structure with the second end of the baffle; Through the retractor, the pull rope is adjusted from the first state to the second state, so that the part of the pull rope located at the bottom of the accommodation slot moves in the direction close to the entrance and exit, and the pull rope drives the locking piece to move away from the entrance and exit, so as to release the locking piece from the limiting state of the baffle. The hook body is provided with a rotating shaft, the first end of the baffle is articulated with the hook body through the rotating shaft, a torsional spring is sleeved on the rotating shaft, and the two force arms of the torsional spring are respectively abutted with the baffle and the hook body, so that the second end of the baffle has a tendency to rotate away from the entrance and exit.

2. A tower crane hook as claimed in claim 1, characterised in that, The inner side wall of the accommodation slot is provided with a guide groove, the guide groove is provided with a limiting groove in communication, the locking piece penetrates through the guide groove, one end of the locking piece located in the limiting groove is provided with a limiting plate, a compression spring is arranged between the inner wall of the limiting groove away from the guide groove and the limiting plate, the side wall of the limiting groove is provided with a through hole penetrating through the hook body, and the pull rope and the limiting plate are connected with each other through the through hole.

3. A tower crane hook as claimed in claim 1, characterised in that, The width of the limiting groove is greater than the width of the guide groove, and the extension direction of the limiting groove is the same as the extension direction of the guide groove.

4. A tower crane hook as claimed in claim 3, characterised in that, One end of the locking piece away from the limiting plate and located close to one side of the accommodation slot is provided with a first limiting surface, the second end of the baffle is provided with a second limiting surface, and the second limiting surface is abutted with the first limiting surface to form a limiting structure.

5. A tower crane hook as claimed in claim 3, characterised in that, The locking piece has a first inclined wedge surface opposite to the first limiting surface, the baffle has a second inclined wedge surface opposite to the second limiting surface, and the second inclined wedge surface can be abutted with the first inclined wedge surface to guide the locking piece to move in the direction close to the limiting groove, so that the second end of the baffle can move from one side of the locking piece to the other side.

6. A tower crane hook as claimed in claim 5, characterised in that, The outer wall of the hook body is provided with a bracket, the bracket is provided with a rotatable pulley, the second end of the pull rope is connected with the limiting plate through the pulley, so that the extension direction of the part of the pull rope between the pulley and the limiting plate is the same as the extension direction of the guide groove.

7. A tower crane hook as claimed in claim 3, characterised in that, The outer wall of the hook body is further provided with a rotatable tensioner, and the second end of the pull rope is connected with the locking piece after sequentially passing through the tensioner and the pulley.

8. A tower crane hook as claimed in claim 7, characterised in that, ​ 9. The tower crane hook of claim 1, wherein, The outer wall of the hook body is provided with at least one tension spring, one end of the at least one tension spring is connected with the hook body, and the other end of the at least one tension spring is sleeved on the pull rope.

10. The tower crane hook of claim 1, wherein, The retractor comprises a driving motor, a winding wheel is sleeved on an output shaft of the driving motor, and the first end of the pull rope is connected with the winding wheel.

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