JP2023172014A - Suspension bucket device - Google Patents

Abstract

To provide a suspension bucket device capable of inverting a bucket body and discharging earth and sand or the like only by moving a suspension frame vertically.SOLUTION: A suspension bucket device includes: a bucket body 2 which is constituted to have a symmetric container shape in a front view and can load earth and sand or the like; a suspension frame 3 which is constituted to have a symmetric portal shape in a front view and can hoist the bucket body 2 by hoisting its central upper part while a pair of connection pins 7 protruding to the right and left from lower end parts of its leg parts are pivoted to both right and left side surfaces of the bucket body 2 by using a crane hook or the like; and a pair of inverting mechanisms 4 which are provided on the right and left on both side surfaces of the bucket body 2 in the front view and can vertically invert the bucket body 2 between a conveyance posture and an earth removing posture only by vertically moving the suspension frame 3.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hanging bucket device used in a mobile crane or the like, and relates to a technology for a hanging bucket device that can be turned over and discharged by simply moving the bucket up and down.

BACKGROUND ART At construction sites such as sabo dams and dams, and civil engineering sites such as excavation using sheet piles, transport work of earth and sand is performed using mobile cranes and the like. The equipment used at this time has been to load earth and sand into a square metal net for lifting earth and sand (called a "wire mokko") with hanging rings attached to the squares, and then hang the hanging rings on a crane hook and lift and transport the earth and sand. It is being said.

In addition, inverted buckets are also used that allow the contents to be drained. When using an inverted bucket, a slinging assistant manually releases the lock attached to the container and lifts it when discharging the loaded soil. Then, the container, which has a hanger attached at a lower position eccentric to the center of gravity, is turned over and the contents of the bucket can be discharged.

On the other hand, a hanging bucket device has been proposed that allows a sling operator to discharge earth and sand without directly touching the bucket. For example, in Japanese Utility Model Application No. 62-157888 (Patent Document 1), it is possible to lift the bag body by grasping the hanging frame at four locations on both the left and right side panels of the bag body, which are offset in both the vertical and horizontal directions. A hanging bucket device is described in which a hanging frame is disengaged from an upper pin by sliding it against a lower pin, and the bucket body is reversed and earth and sand can be discharged.

In the case of the hanging bucket device described in Patent Document 1, the crane hook is moved up and down, and the crane hook is moved horizontally so that the engagement between the upper pin and the hanging frame is released, and then the crane hook is raised. This allows the bucket to be turned over and the dirt inside to be discharged without the worker having to directly touch the bucket.

Furthermore, according to Utility Model Publication No. 7-32544 (Patent Document 2), vertical slide grooves extending vertically through the center of gravity and horizontal slide grooves located below the center of gravity are formed on the side surface of the bag body. , an L-shaped continuous slide groove is formed as a whole, and when the slide pin at the lower end of the hanging member slides to the lower end of the L-shaped slide groove and the hanging member is raised, the bag body is reversed. A hanging bucket device for transporting bulk materials is described, the contents of which can be discharged.

Even in the hanging bucket device described in Patent Document 2, the crane hook of the crane is moved up and down, and the slide pin at the lower end of the hanging member is moved horizontally so that it slides to the lower end of the L-shaped slide groove. After moving the crane hook, if the crane hook is raised, the bucket can be turned over and the contents can be discharged without the worker having to touch the bucket directly.

Utility Model Publication No. 62-157888 Publication No. 7-32544

However, both of the hanging bucket devices described in Patent Document 1 and Patent Document 2 require the crane hook to be moved in a predetermined horizontal direction relative to the bucket before the crane hook is raised and the bucket body is reversed. Therefore, the crane operator must know the horizontal direction in which the crane hook should be moved.

As is well known, in mobile crane operations, crane operators cannot always operate the crane while directly viewing the crane hook. That is, in a situation where the crane hook cannot be directly seen, the crane operator cannot recognize the direction in which the crane should move horizontally.

At sites where the bucket body must be reversed without the crane operator being able to directly see the crane hook, a rigging operator must be located near the hanging bucket device to recognize the horizontal direction in which the crane hook should be moved. It is then necessary for the sling operator to inform the crane operator of the horizontal movement direction of the crane hook via a wireless telephone or the like. This situation led to a decrease in work efficiency and was not favorable from a safety standpoint.

Additionally, crane hooks are usually equipped with thrust bearings, and the hook at the tip can freely rotate 360 degrees horizontally with respect to the hook body. In other words, it is difficult for the crane operator to keep the swing direction of the lifting bucket device in a predetermined direction about the crane hook in a lifted state so that the crane operator can memorize it. Therefore, it is desired that the bucket body can be reversed by only a vertical operation (only a winch operation), regardless of which direction the hanging bucket device is oriented with respect to the crane hook.

Therefore, the present invention provides a hanging bucket device that can invert the bucket body and discharge internal dirt and the like by simply moving the hanging frame up and down. That is, the present invention provides a hanging bucket device that allows easy loading and unloading operations even in a field where the hanging bucket device cannot be directly seen.

The hanging bucket device of the present invention includes a bucket body configured in a symmetrical container shape when viewed from the front, and capable of loading earth and sand, etc.
When viewed from the front, it has a symmetrical gate-shaped configuration, and a pair of connecting pins protruding left and right from the lower ends of the legs are pivotally attached to both left and right sides of the bucket body, and the upper center of the bucket body is connected to a crane hook, etc. a hanging frame capable of lifting the bucket body by lifting the bucket body;
A crane comprising: a pair of left and right reversing mechanisms provided on both sides of the bucket body when viewed from the front, and capable of vertically reversing the bucket body between a transporting position and an earth-unloading position only by raising and lowering the hanging frame. This is a hanging bucket device used for work.

The reversing mechanism includes a connection plate that is arranged parallel to both left and right side surfaces of the bucket body when viewed from the front, and includes a slide groove into which the connection pin is rotatably and slidably fitted; is pivoted at a pivot point provided close to the center line of the bucket body and near the vertical center of the bucket body, and swings at a predetermined angle along the surface of the connection plate as the bucket body is turned upside down, thereby causing the slide to slide. a connecting pin guide that guides the sliding direction of the connecting pin by retracting and retracting from the groove;
The connection plate has a center slide groove formed on a vertical center line passing through the center of gravity of the bucket body, and a center slide groove that is folded back in a rectangular shape from both ends of the center slide groove toward the pivot point. The formed upper and lower two offset slide grooves are continuously formed in a vertically symmetrical shape,
The connection pin guide includes an isosceles triangular plate-shaped guide plate portion including a pivot portion pivoted at the pivot point in the center thereof, and a rod-shaped gravity plate portion extending in the direction of the apex of the isosceles triangle of the guide plate portion. and a sensing rod section, and when viewed from the side, the connection pin guide is arranged in the front-rear direction of the bucket body and is always connected to the gravity sensing rod in a balanced state pivoted about the pivot point. The structure is such that the rotational moment due to gravity of the bucket body is larger than the rotational moment due to gravity of the guide plate portion, so that the bucket body is always stopped at a predetermined position by a stopper after swinging as the bucket body is turned upside down. Further, in the predetermined position, one end of the connecting pin guide, which corresponds to the base of the isosceles triangle of the guide plate portion, closes the upper offset slide groove and opens the center slide groove. In the hanging bucket device, the other end of the guide plate portion, which corresponds to the base of the isosceles triangle, opens the lower offset slide groove and closes the center slide groove.

The above-described hanging bucket device is characterized in that the bucket body is inverted through the following steps.
Step 1: The bucket body is lifted by the hanging frame with the connecting pin at the upper end of the central slide groove.
Step 2: After the bucket body is grounded by the lowering of the hanging frame, when the hanging frame further lowers, the connecting pin is guided by the connecting pin guide and slides downward along the center slide groove. .
Step 3: The connecting pin pushes aside the other end of the guide plate portion protruding into the center slide groove and reaches the lower end of the center slide groove.
Step 4: As the hanging frame rises, the connecting pin is guided by the connecting pin guide, slides along the offset slide groove, and reaches the end of the offset slide groove that is folded back in a ray shape.
Step 5: When the hanging frame further rises, the connecting pin is located at an offset position with respect to the center of gravity of the bucket body, so the bucket body is flipped around the connecting pin and turned upside down.
Step 6: The inverted bucket body slides down along the offset slide groove until the connecting pin reaches the upper end of the center slide groove after inversion.
Step 7: With the connecting pin located at the upper end of the center slide groove after the inversion, the inverted bucket body is lifted up by the hanging frame.

The hanging bucket device of the present invention allows the connecting pin to be guided through the slide groove to a predetermined position by the connecting pin guide by simply moving the hanging frame (crane hook, etc.) up and down. If you raise the bucket, the bucket body will turn over and dirt, etc. can be discharged. Therefore, at a crane work site where the hanging bucket device of the present invention is used, a sling operator is not required, and work efficiency and safety can be improved.

1 is an overall perspective view of a hanging bucket device according to an embodiment of the present invention. FIG. 2 is a side view of the lifting bucket device being lifted by a crane hook. FIG. 3 is a side view of the hanging bucket device in the direction of arrow A in FIG. 2; FIG. 3 is a front view of the hanging frame alone. It is a side view of a bucket main body. 6 is a sectional view taken along the line BB in FIG. 5. FIG. FIG. 3 is a side view showing a single connecting pin guide. It is a figure explaining step 1 of a reversal process. It is a figure explaining step 2 to step 4 of a reversal process. It is a figure explaining step 5 of a reversal process. It is a figure explaining step 6 of a reversal process. It is a figure explaining step 7 of a reversal process. FIG. 2 is a diagram illustrating a situation in which a hanging bucket according to the present embodiment is used at an excavation work site using sheet piles.

FIG. 1 is an overall perspective view of a hanging bucket device 1 according to an embodiment of the present invention. The hanging bucket device 1 shown in FIG. 1 is shown in a state where it is placed on the ground before being lifted by a crane hook or the like. Hereinafter, when explaining the hanging bucket device 1 in this embodiment, the front view and side view will be taken from the direction of the arrow shown in FIG. 1.

FIG. 2 is a side view of the lifting bucket device 1 being lifted by the crane hook 5. FIG. 3 is a view taken along arrow A in FIG. 2, and is a front view of the hanging bucket device 1. When explaining the hanging bucket device 1 in this embodiment, the up and down, front and back, left and right directions are the directions shown by the arrows shown in FIGS. 2 and 3.

The hanging bucket device 1 includes a bucket body 2, a hanging frame 3, and a reversing mechanism 4. As shown in FIG. 3, the bucket body 2 has a symmetrical container shape when viewed from the front, and is capable of loading earth and sand.

As shown in FIG. 3, the hanging frame 3 has a symmetrical gate-like shape when viewed from the front. A pair of connecting pins 7 projecting from the lower ends of the legs 6 of the hanging frame 3 toward the center in the left-right direction are pivotally attached to both left and right side surfaces of the bucket body 2. The bucket body 2 can be lifted by lifting the central upper part 8 of the hanging frame 3 with a crane hook 5 or the like.

As shown in FIG. 3, a pair of left and right reversing mechanisms 4 are provided on both sides of the bucket body 2 when viewed from the front. As will be described later, only by raising and lowering the hanging frame 3 relative to the bucket body 2 due to the action of the reversing mechanism 4, the bucket body 2 can be vertically inverted between the transporting position and the earth-discharging position.

FIG. 4 is a front view of the hanging frame 3 alone. The suspension frame 3 is formed into a symmetrical portal shape as a whole by welding a pair of steel pipes 10 and 11 cut to appropriate dimensions. The central upper part 8 is shaped like an upward chevron so that a crane hook can be hung thereon. Reinforcing steel pipes 12 and 14 are further connected to the steel pipes 10 and 11 by welding, thereby ensuring the strength and rigidity of the suspension frame 3. For the steel pipes 10, 11, 12, and 14 that constitute the suspension frame 3, steel pipes for mechanical structure or the like are used.

A pair of connecting pins 7 are welded to the legs 6 of the hanging frame 3 via a steel plate 13. The pair of connecting pins 7 are arranged on the same line so as to face each other toward the center. A flange is provided at the inner end of the connecting pin 7, and is combined with a connecting plate to be described later. The connecting pin 7 is made of mechanical structural alloy steel or the like, and is manufactured by machining.

FIG. 5 is a side view of the bucket body 2. The overall shape of the bucket body 2 is a symmetrical container shape even when viewed from the side. The lower front and rear sides of the left and right side plates 20 are formed into circular arc portions 21 with large radii, and the lower portions of the side plates 20 are provided with flat portions 22. The front and rear front plates 24 and the bottom plate 25 are welded to the left and right side plates 20 at their ends, forming a container shape with an open top. An edge member 23 made of equilateral angle iron is welded around the entire edge of the upper opening of the bucket body 2. This ensures the strength and rigidity of the upper opening of the bucket body 2. For the members constituting the bucket body 2, general structural rolled steel materials, high-tensile steel plates, or the like are used.

In addition, regarding the hanging bucket device 1 of the present invention, a symmetrical shape from front to back is not a requirement regarding the shape of the bucket body 2 in a side view. Further, it is not required that the front and rear portions of the lower portion be arcuate or that the lower portion be provided with a flat end portion. The side view shape of the hanging bucket device of the present invention may be any other shape as long as it can exhibit the function of the present invention.

Hereinafter, a detailed configuration of the reversing mechanism 4 of the hanging bucket device 1 according to the embodiment will be described.

As shown in FIG. 1, a pair of connection plates 30 are arranged on both left and right side surfaces of the bucket body 2 so as to be parallel to each other when viewed from the front. The connection plate 30 is a vertically long rectangular plate. The connection plate 30 is provided with a slide groove 31 into which the connection pin 7 is rotatably and slidably fitted.

As shown in FIG. 1, the connection pin guide 50 is pivotally supported by a pivot point 32 provided near the center line of the bucket body 2 and near the vertical center of the bucket body 2 when viewed from the side. The connection pin guide 50 guides the connection pin 7 in the sliding direction by swinging at a predetermined angle along the surface of the connection plate 30 and retracting from the slide groove 31 as the bucket body 2 is turned upside down. The detailed structure and operation of the connection pin guide 50 will be described later.

As shown in FIG. 5, the slide groove 31 of the connection plate 30 is connected to a center slide groove 35 formed on a vertical center line 34 passing through the center of gravity of the bucket body 2, and a pivot point from both ends of the center slide groove 35. 32 has two upper and lower offset slide grooves 36 formed by folding back in a rectangular shape. The slide groove 31 is formed in a shape that is vertically symmetrical about a longitudinal center line 42 passing through the pivot point 32 . Further, the slide groove 31 is formed as a continuous groove having approximately the same width from the end of one offset slide groove 36 through the center slide groove 35 to the end of the other offset slide groove 36.

A pair of stoppers 41 are arranged on the back side of the connection plate 30 and between it and the side plate 20. The stopper 41 is disposed on the front side of the central slide groove 35 at vertically symmetrical positions with respect to the center line 42 . The stopper 41 is for determining the swing range of the connection pin guide, which will be described later.

FIG. 6 is a sectional view taken along the line BB in FIG. The connection plate 30 is attached parallel to the side plate 20 via a connection plate 37. A room 38 having a rectangular cross section is formed by the side plate 20, the connection plate 30, and the connection plate 37. A window 39 is opened in the front side of the room 38, and the connecting pin guide 33 can be inserted into the room 38 from the front side. The connecting pin 7 can be inserted into the chamber 38 through the central slide groove 35. The connection plate 30 has a hole 40 into which a pivot pin serving as the pivot point 32 is inserted. The connection plate 30 has a thickness that takes into consideration surface pressure during load transmission with the connection pin 7. Further, a high-tensile steel plate or the like is used for the connection plate 30 so as to have sufficient wear resistance against rotation and sliding of the connection pin 7.

FIG. 7 is a side view showing the connection pin guide 50 alone. The connection pin guide 50 includes a plate-shaped guide plate portion 51 having a substantially isosceles triangle shape, and a rod-shaped gravity sensing rod portion 52 extending in the direction of the apex (forward) of the isosceles triangle of the guide plate portion 51. A hole serving as a pivot portion 53 is bored in the center of the guide plate portion 51 and in the center of an isosceles triangle. In the connecting pin guide 50 according to the present embodiment, a guide plate portion 51 and a gravity sensing rod portion 52 are configured as separate members, and both are connected at a connecting portion 54 with bolts and nuts. It goes without saying that the guide plate portion 51 and the gravity sensing rod portion 52 of the connecting pin guide 50 may be made of the same member so as to be integrated.

A connecting rod 55 is attached to the tip of the gravity sensing rod portion 52. As shown in FIG. 3, the connecting round bar 55 connects the left and right connecting pin guides 50. Since they are connected by this connecting round rod 55, the left and right connecting pin guides 50 operate (swing) in synchronization. Although the connecting rod 55 is a desirable configuration for the function of the reversing mechanism 4 of the present invention, it is not essential.

In the side view shown in FIG. 7, the connection pin guide 50 is always arranged in the front-rear direction of the bucket body 2 and in a balanced state pivoted about the pivot point 32 (pivot part 53) (see FIG. 1). The counterclockwise rotation moment of the gravity sensing rod section 52 due to gravity is larger than the clockwise rotation moment of the guide plate section 51 due to gravity. Therefore, after swinging as the bucket body 2 is turned upside down, it is always stopped by the upper stopper 41, which is at a predetermined position rotated counterclockwise.

In FIG. 7, the connection plate 30 on which the connection pin guide 50 is pivoted by the pivot portion 53 is shown with a chain double-dashed line. In this state, the upper hypotenuse of the isosceles triangle of the guide plate portion 51 abuts against the stopper 41 and is stopped swinging at a predetermined position.

As shown in FIG. 7, in a predetermined position, the connecting pin guide 50 has one end 56 corresponding to the base of the isosceles triangle of the guide plate portion 51 that closes the upper offset slide groove 36 and closes the center slide groove 35. It has an open shape and dimensions. On the other hand, the other end 57 corresponding to the base of the isosceles triangle of the guide plate portion 51 is formed in a shape and size that opens the lower offset slide groove 36 and closes the center slide groove 35.

The appearance and retraction of the guide plate portion 51 into the slide groove of the connection plate 30 shown in FIG. 7 is caused by the swinging of the connection pin guide 50 when the hanging bucket device 1 is turned upside down through the reversal process described later. , the above-mentioned appearance situation will be the same both above and below.

Note that in the connection pin guide 50 described with reference to FIG. 7, the case where the guide in the upper and lower offset slide grooves 36 is performed by one guide plate part 51 has been explained, but it is also possible to separate the upper and lower guide plate parts 51. good. In that case, separate upper and lower gravity sensing rod sections 52 are prepared. At this time, the gravity sensing rod portion 52 may be directed forward or backward. Alternatively, the offset slide grooves 36 may be directed forward and backward, and the connecting pin guides may also be directed forward and backward, respectively.

The process of reversing the hanging bucket device 1 according to the embodiment whose configuration has been described above from the transporting position to the soil unloading position will be described with reference to FIGS. 8 to 12. Note that the following steps will be explained based on a case where the hanging bucket device 1 is suspended by a mobile crane.

Step 1: The bucket body 2 is lifted up by the hanging frame 3 with the connecting pin 7 at the upper end of the center slide groove 35 (transportation posture). (Figure 8)

Step 2: After lowering the winch and lowering the hanging frame 3 so that the bucket body 2 touches the ground, when the winch is lowered further, only the hanging frame 3 is further lowered. Then, the connecting pin 7 (indicated by a black circle) is guided by the connecting pin guide 50 and slides downward along the center slide groove 35. (Figure 9)

Step 3: The connecting pin 7 (indicated by a black circle) pushes aside the other end 57 of the guide plate portion 51 that protrudes into the center slide groove 35 and reaches the lower end of the center slide groove 35. (Figure 9)

Step 4: From here, by winding up the winch and lifting the hanging frame 3, the connecting pin 7 (indicated by a black circle) is guided by the connecting pin guide 50, slides along the offset slide groove 36, and is folded back in a rectangular shape. The end of the offset slide groove 36 is reached. (Figure 9)

Step 5: When the winch continues to be hoisted and the hanging frame 3 rises further, the connecting pin 7 is located at an offset position below the center of gravity of the bucket body 2, so the bucket body 2 is flipped around the connecting pin 7 and vertically Reverse. The direction of rotation of the bucket body 2 at that time is indicated by an arrow. (Figure 10)

Step 6: The lifted and inverted bucket body 2 slides down along the offset slide groove 36 until the connecting pin 7 (indicated by a black circle) reaches the end of the center slide groove 35 which is on the upper side after inversion. (Figure 11)

Step 7: The inverted bucket main body 2 is lifted up by the hanging frame 3 with the connecting pin 7 being at the upper end of the center slide groove 35 after inversion (earth removal posture). (Figure 12)

FIG. 11 shows the movement of the connecting pin 7 (indicated by a black circle) in the process of the reversing operation of the hanging bucket device 1 according to the embodiment from the soil unloading posture (see FIG. 12) to the transporting posture (see FIG. 8). Although it differs only in the front-rear direction, it is basically the same as that in FIG. 9, so a detailed explanation will be omitted.

FIG. 13 is a diagram illustrating a situation in which the hanging bucket device 1 according to the present embodiment is lifted by the crane hook 5 of the rough terrain crane 60 and used for earth and sand transportation work at an excavation work site using sheet piles 61.

According to the hanging bucket device 1 of the present embodiment, the connecting pin 7 is guided along the slide groove 31 to a predetermined position by the connecting pin guide 50 (see FIG. 9, etc.), so that the hanging frame 3 (crane hook 5) is By simply moving the bucket body 2 up and down, the bucket body 2 can be inverted and the earth and sand inside can be discharged.

That is, even at a work site as shown in FIG. 13, where the operator of the mobile crane 60 cannot directly see the hanging bucket device 1, the bucket body 2 can be reversed only by operating the winch. Therefore, at a work site where the hanging bucket device 1 of the present invention is used, a sling operator is not required, and work efficiency and safety can be improved.

Note that the lifting bucket device 1 of the present invention does not need to be lifted via the crane hook 5, and may be lifted using another jig. Alternatively, it may be lifted directly with a wire rope. Further, the working machine for lifting is not limited to a mobile crane. It may be lifted by an arm such as a shovel without using a winch.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other changes to the configuration are possible without departing from the spirit of the present invention. The invention is not limited by the above description, but is defined by the claims appended hereto.

1: Hanging bucket device 2: Bucket body 3: Hanging frame 4: Reversing mechanism 5: Crane hook 6: Legs 7: Connection pin 8: Upper center 30: Connection plate 31: Slide groove 32: Pivot point 34: Center line 35 : Center slide groove 36 : Offset slide groove 41 : Stopper 50 : Connection pin guide 51 : Guide plate part 52 : Gravity sensing rod part 56 : One end part 57 : Other end part

Claims (1)

A bucket body configured in a symmetrical container shape when viewed from the front and capable of loading earth and sand,
When viewed from the front, it has a symmetrical gate-shaped configuration, and a pair of connecting pins protruding left and right from the lower ends of the legs are pivotally attached to both left and right sides of the bucket body, and the upper center of the bucket body is connected to a crane hook, etc. a hanging frame capable of lifting the bucket body by lifting the bucket body;
a pair of left and right inversion mechanisms provided on both sides of the bucket body when viewed from the front, and capable of vertically inverting the bucket body between a transporting position and an earth-unloading position only by raising and lowering the hanging frame;
A hanging bucket device used for crane work, comprising:
The reversing mechanism is
a connection plate provided with slide grooves arranged parallel to each other on both left and right side surfaces of the bucket body when viewed from the front, and into which the connection pin is rotatably and slidably fitted;
The bucket body is pivoted at a pivot point provided near the center line of the bucket body in a side view and near the vertical center of the bucket body, and swings at a predetermined angle along the surface of the connection plate as the bucket body is turned upside down. a connecting pin guide that guides the sliding direction of the connecting pin by retracting and retracting from the sliding groove;
The connection plate has the sliding groove,
a center slide groove formed on a vertical center line passing through the center of gravity of the bucket body;
two upper and lower offset slide grooves formed by folding back from both ends of the central slide groove toward the pivot point in a rectangular shape, are continuously formed in a vertically symmetrical shape;
The connection pin guide includes an isosceles triangular plate-shaped guide plate portion including a pivot portion pivoted at the pivot point in the center thereof, and a rod-shaped gravity plate portion extending in the direction of the apex of the isosceles triangle of the guide plate portion. It is composed of a sensing rod part, and
Further, in a side view, when the connecting pin guide is disposed in the front-rear direction of the bucket body and is pivoted about the pivot point in a balanced state, the rotation moment due to the gravity of the gravity sensing rod is always applied to the guide plate. By being given the property of being larger than the rotational moment due to gravity of the bucket body, the bucket body is configured to always stop at a predetermined position by a stopper after swinging as the bucket body is turned upside down,
Furthermore, in the predetermined position, one end of the connecting pin guide, which corresponds to the base of the isosceles triangle of the guide plate portion, closes the upper offset slide groove and opens the center slide groove; The other end corresponding to the base of the isosceles triangle of the guide plate portion is formed in a shape that opens the lower offset slide groove and closes the center slide groove,
The above-described hanging bucket device is characterized in that the bucket body is inverted through the following steps.
Step 1: The bucket body is lifted by the hanging frame with the connecting pin at the upper end of the central slide groove.
Step 2: After the bucket body is grounded by the lowering of the hanging frame, when the hanging frame further lowers, the connecting pin is guided by the connecting pin guide and slides downward along the center slide groove. .
Step 3: The connecting pin pushes aside the other end of the guide plate portion protruding into the center slide groove and reaches the lower end of the center slide groove.
Step 4: As the hanging frame rises, the connecting pin is guided by the connecting pin guide, slides along the offset slide groove, and reaches the end of the offset slide groove that is folded back in a ray shape.
Step 5: When the hanging frame further rises, the connecting pin is located at an offset position with respect to the center of gravity of the bucket body, so the bucket body is flipped around the connecting pin and turned upside down.
Step 6: The inverted bucket body slides down along the offset slide groove until the connecting pin reaches the upper end of the center slide groove after inversion.
Step 7: With the connecting pin located at the upper end of the center slide groove after the inversion, the inverted bucket body is lifted up by the hanging frame.

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