CN209922756U

CN209922756U - Crane hook fixing device

Info

Publication number: CN209922756U
Application number: CN201920563796.XU
Authority: CN
Inventors: 郭阳春
Original assignee: Connection Heng Tong Machinery Co Ltd In Changsha
Current assignee: Zhonglian Hengtong Machinery Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-01-10
Anticipated expiration: 2029-04-24

Abstract

The utility model discloses a crane hook fixing device, including fixed plate, guide bar, deflector and spacing fixed plate. Wherein the fixed plate is connected with the head of the suspension arm, the guide rod is arranged on the lifting hook, the guide plate is arranged on the fixed plate, and the guide groove is arranged on the guide plate. Wherein spacing fixed plate sets up in the fixed plate inboard, and spacing fixed plate sets up to holding the frame that can hold the lifting hook. When the lifting hook upwards receives the hook, the guide bar slides in the guide way, and the lifting hook is led into the limiting fixing plate to be fixed. The utility model discloses can realize automatic receiving and releasing lifting hook, reduce operator's intensity of labour to improve work efficiency, the lifting hook is fixed reliable moreover, can prevent that the vehicle is at the in-process of traveling, and the lifting hook bumps or slides.

Description

Crane hook fixing device

Technical Field

The utility model relates to a technical field of hoist especially relates to a crane hook fixing device.

Background

In the field of automobile cranes and truck-mounted lifting transport vehicles, when a vehicle is in a running state, a special fixing device is needed for the lifting hook to reliably fix the lifting hook so as to prevent collision or sliding.

The existing lifting hook fixing device is provided with a lifting ring and a lifting belt fixing mode, the fixing mode requires an operator to get on and off the vehicle for operation, the operation can be completed only by matching two persons for using unskilled operators, the time spent is long, and the whole operation process wastes time and labor.

The steel wire rope hook is fixed in a hook retracting mode through the steel wire rope, the fixing device is complex, the structure manufacturing requirement is high, in the running process, the steel wire rope is stressed greatly, the lifting hook slides downwards easily, the lifting hook is caused to shake, and the safety performance is influenced.

Disclosure of Invention

In order to solve the technical problem, an object of the utility model is to provide a simple structure, fixed reliable and can reduce operating personnel intensity of labour and improve work efficiency's hoist lifting hook fixing device.

An embodiment of the utility model provides a crane hook fixing device for on being fixed in the davit with the lifting hook, it includes:

the fixing plate is connected to the head of the suspension arm;

the guide rod is arranged on the lifting hook;

the guide plate is arranged on the fixed plate, and a guide groove is formed in the guide plate;

the limiting fixing plate is arranged on the inner side of the fixing plate and is provided with a containing frame capable of containing the lifting hook, and when the lifting hook upwards retracts, the guide rod slides into the guide groove to introduce the lifting hook into the limiting fixing plate for fixing.

Preferably, the entrance of the guide groove of the guide plate is opened towards two sides and has an included angle.

Preferably, the guide plates are arranged on two sides of the lifting hook, and an included angle is formed between the guide plates on the two sides.

Preferably, the width size ratio of the top end of the included angle of the guide groove to the inlet end is 1: 1.5-1: 3;

or the width size ratio of the top end to the bottom end of the included angle of the guide plates on the two sides is 1: 1.5-1: 3; or the width size ratio of the top end and the inlet end of the included angle of the guide groove and the width size ratio of the top end and the bottom end of the included angle of the guide plates at two sides are 1: 1.5-1: 3.

preferably, the fixing plate is fixedly connected to the head of the suspension arm.

Preferably, the central line of the fixed plate and the central line of the suspension arm form an included angle.

Preferably, the included angle between the central line of the fixing plate and the central line of the suspension arm is 10-30 degrees.

Preferably, one side of the fixed plate, which is far away from the suspension arm, is connected to the head of the suspension arm through a rotating shaft, and the suspension arm is provided with a connecting piece; after the hook is retracted, the fixed plate is rotated around the rotating shaft to be close to the suspension arm, and at the moment, the connecting piece is connected with one of the fixed plate, the guide plate and the hook.

Preferably, the fixed plate is provided with a limiting mechanism, the limiting mechanism is provided with two limiting positions, the hook can be placed when the fixed plate is far away from the lifting arm and rotates to the limiting positions, and the lifting hook can be fixed when the fixed plate is close to the lifting arm and rotates to the limiting positions.

Preferably, the limiting mechanism comprises an arc waist hole taking the axis of the rotating shaft as the center of a circle and limiting columns arranged in the arc waist hole, and the two ends of the arc waist hole are provided with a limiting position enabling the fixing plate to vertically move downwards and a limiting position enabling the fixing plate to rotate to be close to the suspension arm.

The utility model discloses well fixed plate fixed connection is at the davit head, and when the lifting hook need be received the hook, wire rope is pulling the lifting hook rebound, and the lifting hook is right and is slided into the guide way to the guide bar on the lifting hook, continues rebound along the guide way under wire rope's effect, introduces fixed position to the lifting hook simultaneously, puts the davit downwards, is the horizontality until the davit, continues to receive the hook, until the lifting hook is fixed completely.

Secondly, the utility model discloses a fixed plate can also swing ground and connect at the davit head, when the hook is received to needs, the davit is the horizontality, wire rope is drawing lifting hook rebound, guide bar on the lifting hook is right the lifting hook and is slided into the guide way, continue rebound along the guide way under wire rope's effect, until the extreme position to fixed position is introduced to the lifting hook, wire rope continues to rebound, lifting hook fixing device is under the eccentric pulling force effect of wire rope assembly pulley, deflect until extreme position towards the davit, then fix lifting hook fixing device with the connecting piece.

Therefore, the utility model discloses can realize receiving the hook automatically, only need an operating personnel can accomplish whole receipts hook process, not only reduce operator's intensity of labour to improve work efficiency, the lifting hook is fixed reliable moreover, can prevent that the vehicle is at the in-process that traveles, and the lifting hook bumps or slides.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of a lower hook of a fixed fixture;

FIG. 3 is a schematic view of a hook closing mechanism of a fixed fixture;

FIG. 4 is a schematic view of a hook closing operation of the fixed fixture;

FIG. 5 is a schematic view of a lower hook of a hook of the swing type fixture;

fig. 6 is a view showing completion of hook retraction of the hook of the swing type fixing device.

Detailed Description

In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention in any way.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

It is to be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the generic and descriptive sense only and not for purposes of limitation, as the term is used in the generic and descriptive sense, and not for purposes of limitation, unless otherwise specified or implied, and the specific reference to a device or element is intended to be a reference to a particular element, structure, or component. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in FIGS. 1-6, the present embodiment provides a crane hook attachment for attaching a hook 10 to a boom 5, comprising

A fixed plate 1 connected to the head of the boom 5;

the guide rod 4 is arranged on the lifting hook 10;

the guide plate 3 is arranged on the fixed plate 1, and a guide groove is formed in the guide plate 3;

spacing fixed plate 2, set up in fixed plate 1 is inboard, spacing fixed plate 2 sets up to the frame that holds that can hold lifting hook 10, and when the lifting hook upwards received the hook, guide bar 4 slided into the guide way, introduced spacing fixed plate 2 internal fixation with lifting hook 10.

As shown in fig. 2, the hook 10 is used for hooking an object, a pulley is arranged on the boom 5, a steel wire rope is wound around the pulley on the boom 5 and connected with the pulley on the hook 10, and the hook 10 is driven to move up and down by winding and unwinding the steel wire rope, so that the object hanging work of the hook or the hook retracting of the hook is completed.

The fixing plate 1 may be directly welded or fixed to the head of the boom 5 by a fixing member such as a bolt or a rivet, or may be movably connected to the head of the boom 5 by a hinge.

Wherein, be provided with deflector 3 on fixed plate 1, be provided with the guide way on this deflector 3, the guide way is used for cooperating with guide bar 4, the position of injecing guide bar 4. The guide plate 3 may be provided as a separate plate connected to the fixing plate or may be provided as a plate integrated with the fixing plate 1. The two guide plates 3 are respectively arranged on two sides of the lifting hook 10, and the distance between the two guide plates 3 is consistent with the width of the lifting hook 10 and used for limiting two side surfaces of the lifting hook 10.

Wherein, guide bar 4 sets up on lifting hook 10, is located the position that the side level is in the middle and is close to lifting hook 10 top, and this guide bar 4 can set up to the circle axle, and this guide bar 4 can alternate the right flank from lifting hook 10 left surface, also can be the spindle nose that stretches out from lifting hook 10 both sides for guide lifting hook 10 gets into spacing fixed plate 2.

Wherein, spacing fixed plate 2 sets up in the inboard same position with deflector 3 of fixed plate 1, and spacing fixed plate 2 is two, and spacing fixed plate 2 sets up to the frame that holds that can hold lifting hook 10, for example can set up to the frame that holds with lifting hook 10 outline shape unanimity, and the top that holds the frame is sealed, and the width between the both sides is unanimous with the side width of lifting hook 10 for the top surface and the part of injecing lifting hook 10 are positive.

When the hook needs to be retracted, the lifting hook 10 moves upwards, the guide rod 4 on the lifting hook 10 slides into the guide groove, the lifting hook 10 is righted, and the lifting hook 10 is guided into the limiting fixing plate 2 along the guide groove to be fixed. At this time, the guide plate 3 limits the freedom degrees of two side surfaces of the hook 10, and the limit fixing plate 2 limits the freedom degrees of the top surface and part of the front surface of the hook 10, so that the hook 10 is completely limited, and is prevented from randomly swinging.

When the hook is required to be placed, the lifting hook 10 moves downwards, the lifting hook 10 is far away from the limiting fixing plate 2, and the guide rod 4 on the lifting hook 10 slides out of the guide groove to achieve hook placement.

It can be seen that, the utility model discloses can realize automatic receiving and releasing the hook, only need 1 operating personnel can accomplish whole receiving and releasing hook process, not only reduced operator's intensity of labour to improved work efficiency, lifting hook 10 is fixed reliable moreover, can prevent that the vehicle is at the in-process of traveling, and lifting hook 10 bumps or slides.

In order to smoothly guide the guide rod 4 into the guide groove, the entrance of the guide groove of the guide plate 3 may be provided with an angle that opens toward both sides, i.e., the channel of the guide groove is wider at the lower portion and narrower at the top portion, the narrower at the top portion is for better locking the guide rod 4, and the wider at the lower portion is for smooth entry of the guide rod 4. Preferably, the guide groove may include an included angle: the width size ratio of the top end of the included angle of the guide groove to the inlet end is set to be 1: 1.5-1: 3. the front shape of the channel, i.e. seen in a direction perpendicular to the fixed plate 1, may be curved, folded or straight.

Meanwhile, an included angle is formed between the guide plates 3 at the two sides, and the included angle is opened towards the two sides, so that the lifting hook 10 can be smoothly introduced into the limiting fixing plate 2 for fixing. That is, the channel formed by the two guide plates 3 is wider at the lower part and narrower at the top part, the narrower at the top part is used for well clamping the hook 10, and the wider at the lower part is used for facilitating the smooth entering of the hook 10. Preferably, the angle between the two side guide plates 3 may be set as follows: the width size ratio of the top end to the bottom end of the included angle of the guide plates 3 at the two sides is set to be 1: 1.5-1: 3. the front shape of the passage, that is, the shape of the side guide 3 when viewed from the side, may be a polygonal line or a straight line.

As shown in fig. 2-3, the connection between the fixed plate 1 and the boom 5 can be a fixed connection, as described below:

when the fixing plate 1 is fixedly connected to the head of the suspension arm 5 by direct welding or by bolts, rivets, etc., the center line of the fixing plate 1 and the center line of the suspension arm 5 form an included angle. According to the using condition of the crane, when the included angle between the central line of the crane jib 5 and the horizontal direction is 60-80 degrees, the jib 5 is stressed optimally. Therefore, the included angle between the central line of the fixing plate 1 and the central line of the suspension arm 5 can be set to be 10-30 degrees. For example, the included angle may be set to 20 °, the boom 5 is inclined to 70 ° relative to the horizontal direction, at this time, the hook 10 is retracted upward under the tension of the steel wire rope, when the hook 10 approaches the guide plate 3, the guide rod 3 straightens the hook 10 and slides into the guide groove, the hook is retracted continuously, the hook 10 enters the channel formed by the two guide plates 3, and the hook 10 can be partially introduced into the position-limiting fixing plate 2 under the action of the guide plates 3 to define a part of the two side faces and the front face of the hook 10. At the moment, the hook is stopped to be retracted, the suspension arm 5 is gradually and horizontally placed, and with the rotation of the suspension arm 5, the steel wire rope on the pulley of the suspension arm 5 is forced to be pulled upwards, so that the hook 10 continuously moves upwards towards the limiting fixing plate 2 until the suspension arm 5 is completely horizontal, and the hook is retracted continuously until the top end of the hook 5 reaches the limit position of the limiting fixing plate 2.

As shown in fig. 4-6, the connection between the fixed plate 1 and the boom 5 can also be a swing-type connection, as described in detail below:

the side of the fixed plate 1 far from the boom 5 is movably connected to the head of the boom 5 through a rotating shaft 8, as shown in fig. 5, the rotating shaft 8 is arranged at the right side of the center line of the wire rope pulley block, the fixed plate 1 can freely rotate around the rotating shaft 8, wherein, a connecting piece 6 is arranged on the boom 5, and the connecting piece 6 can be arranged as a loop chain. One end of the loop chain is fixed on the suspension arm 5, and the other end hangs down freely. The steel wire rope pulls the lifting hook 10 upwards until the lifting hook 10 is completely accommodated in the limiting fixing plate 2, the steel wire rope continues to be pulled upwards, the suspension arm 5 forces the fixing plate 1 to rotate upwards around the rotating shaft 8 under the action of eccentric tension of the steel wire rope pulley block until the suspension arm 5 is close to, the lifting hook 10 can be completely fixed on the suspension arm 5 by using the free end of the ring chain, the ring chain can be connected onto the fixing plate 1 or the guide plate 3 or the lifting hook 10, the ring chain limits the rotation of the fixing plate 1 at the moment, and the lifting hook 10 is completely fixed.

In order to limit the rotation position of the fixing plate 1, a limiting mechanism 9 can be arranged on the fixing plate 1, the limiting mechanism 9 comprises two limiting positions, the first limiting position can limit the hook 10 to vertically downwards, when the fixing plate 1 rotates downwards away from the suspension arm 5 to the limiting position, the central line of the hook 10 is perpendicular to the central line of the suspension arm 5, and the hook 5 moves up and down under the action of a steel wire rope, so that the object can be hooked or the hook can be hooked upwards. The second limit position can limit the distance between the hook 10 and the boom 5 to be relatively safe when the hook 10 rotates to be close to the boom 5, so that the hook 10 does not collide with the boom 5, and the hook 10 can be fixed on the boom 5 by using a ring chain.

As a further preference, the limiting mechanism 9 may be configured as an arc-shaped waist hole with the axis of the rotating shaft 8 as the center of a circle and a limiting column in the arc-shaped waist hole, and the fixing plate 1 may freely rotate along the track of the arc-shaped waist hole. The arc-shaped waist hole comprises two limit positions, when the fixing plate 1 rotates to be far away from the suspension arm 5 until the limit position of one end of the waist hole, the lifting hook 10 vertically moves downwards and moves up and down under the action of the steel wire rope, and therefore the object can be hooked or the hook can be hooked upwards. When the fixed plate 1 rotates to be close to the suspension arm 5 until the limit position of the other end of the waist-shaped hole is reached, the lifting hook 10 is close to the suspension arm 5 and cannot collide at the same time, and the lifting hook 10 can be fixed on the suspension arm 5 through a ring chain, so that the lifting hook 5 can be firmly fixed.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. It should be noted that there are no specific structures but a few objective structures due to the limited character expressions, and that those skilled in the art may make various improvements, decorations or changes without departing from the principle of the invention or may combine the above technical features in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

1. A crane hook fixing device for fixing a hook (10) to a boom (5), comprising:

a fixed plate (1) connected to the head of the boom (5);

the guide rod (4) is arranged on the lifting hook (10);

the guide plate (3) is arranged on the fixed plate (1), and a guide groove is formed in the guide plate (3);

spacing fixed plate (2), set up in fixed plate (1) is inboard, spacing fixed plate (2) set up to the frame that holds that can hold lifting hook (10), when the lifting hook upwards received the hook, guide bar (4) slided into the guide way, introduce spacing fixed plate (2) internal fixation with lifting hook (10).

2. A crane hook fastening according to claim 1, characterised in that the entrance to the guide channel of the guide plate (3) is open towards both sides and angled.

3. A crane hook fixing device as claimed in claim 2, wherein the guide plates (3) are provided on both sides of the hook (10), the guide plates (3) on both sides having an included angle therebetween.

4. A crane hook fixture as claimed in claim 3 in which:

the width size ratio of the top end of the included angle of the guide groove to the inlet end is 1: 1.5-1: 3;

or the width size ratio of the top end to the bottom end of the included angle of the guide plates (3) at the two sides is 1: 1.5-1: 3;

or the width size ratio of the top end and the inlet end of the included angle of the guide groove and the width size ratio of the top end and the bottom end of the included angle of the guide plates (3) at two sides are both 1: 1.5-1: 3.

5. a crane hook fixing device as claimed in claim 3, characterised in that the fixing plate (1) is fixedly connected to the head of the boom (5).

6. A crane hook fixing device as claimed in claim 5, wherein the centre line of the fixing plate (1) is angled with respect to the centre line of the boom (5).

7. A crane hook fixing device as claimed in claim 6, wherein the angle between the centre line of the fixing plate (1) and the centre line of the boom (5) is between 10 ° and 30 °.

8. A crane hook fixing device as claimed in claim 3, characterised in that the side of the fixing plate (1) remote from the boom (5) is connected to the head of the boom (5) by means of a pivot shaft (8), the boom (5) being fitted with a connecting piece (6); after the hook (10) finishes retracting, the fixed plate (1) is rotated around the rotating shaft (8) to be close to the suspension arm (5), and at the moment, the fixed plate (1), the guide plate (3) and one of the hooks (10) are connected through the connecting piece (6).

9. A crane hook fixing device as claimed in claim 8, wherein the fixing plate (1) is provided with a limiting mechanism (9), the limiting mechanism (9) is provided with two limit positions, the fixing plate (1) can complete hook releasing when rotating to the limit positions away from the boom (5), and the fixing plate (1) can fix the hook when rotating to the limit positions close to the boom (5).

10. Crane hook fixing device according to claim 9, wherein the limiting mechanism (9) comprises an arc-shaped waist hole centered around the axis of the rotation shaft (8) and a limiting post arranged in the arc-shaped waist hole, and the two ends of the arc-shaped waist hole are provided with a limit position enabling the fixing plate (1) to vertically face downwards and a limit position enabling the fixing plate (1) to rotate close to the jib (5).