JP2020040784A - Container hanging and supporting device - Google Patents

Abstract

To provide a container hanging and supporting device capable of hanging and supporting a container to an unloading place while maintaining a horizontal posture thereof and tilting the container to an angle at which a content can be discharged smoothly at the unloading place.SOLUTION: The container hanging and supporting device includes a container tilting mechanism in which a hydraulic cylinder 4 is provided on one side part of a hanging frame 1 hung from a hook of a crane, an upper end of a piston rod 4c of the hydraulic cylinder and one side part of a container hanging spreader D landing on a container A are connected to each other by a movable side suspending rope 2, a fixed side suspending rope 3 is connected between the other side part of the hanging frame 1 and the other side part of the container hanging spreader D, the one side part of the container A at which a door is provided is tilted downward with a lower end of the fixed side suspending rope 3 as a fulcrum by the downward contraction of the piston rod 4c, and the container A is further tilted largely in interlocking with the operation of the hydraulic cylinder.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a container hanging support device, more specifically, a container suspended from a hook or the like of a crane, the container is hung via a hanging cable, and the container is inclined at a place where the container is unloaded so that the content of the powdery granular material or the like in the container is reduced. The present invention relates to a container suspension device capable of discharging objects to the outside.

  Conventionally, a container containing powdery or granular materials such as earth and sand, chips, or grains such as soybeans is lifted by a crane and transported to a loading / unloading location, where the container is inclined and the container door is opened. A device has been developed that discharges and puts the contents into a ship, truck, or the like waiting at the unloading place by opening.

  For example, in Patent Literature 1, both side support frames are disposed below both horizontal frames of a crane running along a track so as to be parallel to each other, and a plurality of links are provided between these horizontal frames and the support frames. The members are connected to each other by an equilibrium mechanism formed in a pantograph shape by being pivotally supported with each other, and the support frame is configured to be able to move up and down via the equilibrium mechanism by a chain block installed on a crane, while the support frame is connected to the support frame. A support mechanism for supporting the container by removably engaging the lower surfaces at both ends of the beam rotatably supporting the center portions of both sides of the container is provided, and the operation of the electric cylinder on the lower surface side of the support frame. An apparatus is disclosed in which a movable frame for tilting a container is pivotally connected to a movable frame.

  According to this device, the container is suspended and supported by the support mechanism, the balancing mechanism is operated at the unloading place, the container is lowered, and the actuator of the electric cylinder is extended. In this state, one end pivoting downward presses one end of the upper end surface of the container, the container tilts with the movable frame, and the door provided on the side surface of the container at one end side is turned obliquely downward. By opening the door, the contents can be discharged and put into a truck or the like waiting at the unloading place.

JP-B-61-5997

  However, according to the above container discharge device, the center of both sides of the container is rotatably supported via the beam by the support mechanism, and one end of the container is pushed down by extension of the actuator of the electric cylinder. The tilting angle of the container is limited even if the actuator is extended to the maximum, so that the tilting of the container can be limited to only about 20 degrees. However, there is a problem that the discharge speed of the contents from the container is slow, the discharge takes a long time, the contents are not discharged smoothly, and a situation occurs in which some contents remain in the container.

  Furthermore, apart from the mechanism for tilting the container suspended from the crane, a balancing mechanism is required to support the container in a horizontal state, which complicates the structure, which not only makes the equipment expensive but also arranges it at the lower end of the balancing mechanism. There is a possibility that the supporting frame is obstructing the tilting of the container.

  In addition, the lower part support plate of the support mechanism provided on the support frame is detachably connected to the lower surface of both ends of the beam rotatably supporting the center of both sides of the container. It is difficult to suspend a heavy container, and the support plate may not be completely locked or may accidentally come off the beam. There was a risk of occurring.

  The present invention has been made in view of such a problem, and an object of the present invention is to easily and surely suspend and transport a container to a unloading place in a stable state while maintaining a horizontal posture. It is an object of the present invention to provide a container hanging and supporting device capable of easily and accurately inclining a container at an unloading place to an angle at which contents can be discharged smoothly and discharging the contents smoothly and in a short time.

  In order to achieve the above object, a container suspension support device according to the present invention is, as described in claim 1, provided with a suspension frame attached to a crane in a suspended state via a suspension tool, and provided on the suspension frame. The upper end of the hydraulic cylinder is connected to the upper end of a piston rod projecting upward from the cylinder tube of the hydraulic cylinder, and the lower end is removably connected to the upper surface of one side of the container where the door is provided. A side suspension line, and a fixed side suspension line having an upper end connected to the suspension frame and a lower end detachably connected to the upper surface of the other side of the container, and movable by operating the hydraulic cylinder. The lower suspension line is moved downward to tilt the container with the lower end of the fixed suspension line as a fulcrum, and the container together with the suspension frame is further inclined together with the operation of the hydraulic cylinder. Characterized in that it comprises a container tilting mechanism to operate in that direction.

  In the container suspension device configured as described above, the invention according to claim 2 is characterized in that when the hydraulic cylinder is not operated, the piston rod connecting the upper end of the movable side suspension cable extends to a position where it reaches the top dead center. And the container is suspended from a horizontal position.

  The invention according to claim 3 is characterized in that the container tilting mechanism supports a rotating shaft that fixes the center of a sprocket and a drum having a larger diameter than the sprocket to the center of the upper end of a bracket erected on a suspension frame. The two ends of the rotating shaft are supported by the lower end of the suspension, and the upper end of the chain is hung over the sprocket, and the lower end of the chain is connected to the end of the piston rod of the hydraulic cylinder. On the other hand, the lower end of the auxiliary winding wire having the upper end fixed to the outer peripheral surface of the drum is detachably connected to the upper surface of the other end of the container.

  According to a fourth aspect of the present invention, the hydraulic circuit of the hydraulic cylinder is provided between the upper and lower chambers in the cylinder tube partitioned by the piston to communicate these upper and lower chambers, and is provided in the pipeline. And a solenoid valve that is operated by remote control to open and close the pipeline.

  Further, according to a fifth aspect of the present invention, in the fourth aspect of the present invention, the hydraulic circuit of the hydraulic cylinder is connected between the upper and lower chambers in the cylinder tube partitioned by the piston to connect these upper and lower chambers. And a second pipeline communicating the upper and lower chambers. The hydraulic fluid is actuated by remote control to the first pipeline and pressurized oil only from the lower chamber to the upper chamber in the cylinder tube. While a first solenoid valve is provided to allow the fluid to flow, a second solenoid valve is provided to operate the remote operation of the second conduit by remote control to flow the pressure oil only from the upper chamber to the lower chamber in the cylinder tube. The inner diameter of the second conduit is formed to be larger than the inner diameter of the first conduit.

  According to the invention according to claim 6, the lower ends of the movable side suspension line and the fixed side suspension line are landed on the container and detachably connected to the container. It is characterized by being detachably connected to the upper surface.

  According to the first aspect of the present invention, the hydraulic cylinder is disposed on the suspension frame suspended from the lower end of the hoisting rope of the crane via a hook or the like, and the hydraulic cylinder projects upward from the cylinder tube of the hydraulic cylinder. The upper end of the movable-side hanging cable is connected to the upper end of the piston rod, and the lower end of the movable-side hanging cable is removably connected to the upper surface of one side of the container where the door is provided. Since the upper end of the fixed side suspension cable is connected and the lower end of the fixed side suspension cable is connected to the upper surface side of the other side of the container so as to be freely detachable, the piston rod of the hydraulic cylinder is connected. By holding the container extended upward, the container can be lifted up in a posture where it is held horizontally via the movable side suspension line and the fixed side suspension line, and a stable suspension position to the unloading place is ensured. To be transported to It can be.

  Further, at the unloading place, if the hydraulic cylinder is operated by remote control, the piston rod contracts and the movable-side hanging line moves downward, and the container tilts downward with the lower end of the fixed hanging line as a fulcrum. The outlet closed by the door can be turned obliquely downward, and at the same time, the container tilting mechanism is operated in conjunction with the downward contraction of the piston rod, and the container is tilted further downward together with the hanging support. By opening the door of the container in this state, the contents can be smoothly discharged from the container in a short time.

  In addition, when the contents of the container are discharged and the container is emptied, the container can return from the inclined state to the horizontal state by the restoring force of its own weight, preparing for the next unloading work Is completed quickly and the unloading operation can be performed continuously and efficiently.

  According to the invention according to claim 2, when the hydraulic cylinder is not operated, the piston rod connecting the upper end of the movable-side hanging cable extends to a position reaching the top dead center, and the container is held in a horizontal posture. Since it is configured to be suspended, if the piston rod is moved down from this state until it reaches the lower fulcrum, the inclination angle of the container at the time of unloading can always be kept at a constant angle, and unloading by a crane The discharge operation of the contents can be smoothly performed by setting all the containers conveyed to the place to a fixed inclination angle.

  According to the third aspect of the present invention, the container tilting mechanism includes a rotating shaft that fixes the center of a sprocket and a drum having a diameter larger than that of the sprocket to the center of the upper end of a bracket erected on the suspension frame. While supporting both ends of the rotating shaft by the lower end of the suspension, the upper part of the chain is wrapped around the sprocket, and the lower end of the chain is connected to the end of the piston rod of the hydraulic cylinder. Further, since the lower end of the auxiliary winding wire whose end side is fixed to the outer peripheral surface of the drum is detachably connected to the upper surface side of the other end of the container, the piston of the hydraulic cylinder is unloaded at the unloading place. When the rod is contracted downward, the container is tilted by the movable side suspension line and the fixed side suspension line suspending the container as described above, and Chain that spanned the bets are integrally rotated and drawn the drum sprocket by the piston rod, auxiliary hoisting wire can be tilted further increase the winding Asked in container drum.

  The inclination angle of this container is proportional to the stroke (extension amount) of the piston rod, and by controlling the stroke of the piston rod to be constant, the inclination angle of the container at the time of discharging the contents is always constant as described above. The angle can be set, and the unloading operation can be performed reliably and efficiently.

  According to the invention according to claim 4, the hydraulic circuit of the hydraulic cylinder is connected between the upper and lower chambers in the cylinder tube partitioned by the piston, and connects the upper and lower chambers with each other. It is provided with a solenoid valve that opens and closes the pipeline by being operated by remote control, so when the container is held horizontally by extending the piston rod of the hydraulic cylinder upward and holding the container horizontally, The pressure oil in the lower chamber of the hydraulic cylinder is pressurized, and from this state, if the solenoid valve is opened by remote control at the unloading place, the supporting force of the container load by the pressure oil is released and the pressure oil is released. Flows from the lower chamber to the upper chamber of the hydraulic cylinder through the pipeline, the piston rod contracts downward due to the load of the container, and the movable-side hanging rope moves downward, causing the container to move downward. , It is possible to easily and reliably tilt to a predetermined tilt angle lower end of the fixed side slings as a fulcrum.

  When the discharge of the contents from the container is completed, the auxiliary wire is pulled downward by the restoring force due to the container's own weight, and the drum rotates in the opposite direction to the above with the sprocket, and the chain spans the sprocket. Accordingly, the piston rod of the hydraulic cylinder extends upward while returning the pressure oil from the upper chamber side to the lower chamber side, and can be returned to a state where the next unloading can be started.

  Further, according to the invention according to claim 5, the hydraulic circuit of the hydraulic cylinder is connected between the upper and lower chambers in the cylinder tube partitioned by the piston and connects the upper and lower chambers with each other. And a second conduit communicating the upper and lower chambers, the first solenoid valve being operated by remote control on the first conduit to flow pressure oil only from the lower chamber to the upper chamber in the cylinder tube. On the other hand, since the second solenoid valve is provided in the second conduit, which is operated by remote control to flow the pressurized oil only from the upper chamber to the lower chamber in the cylinder tube, the container is used to unload the container by the crane. When the first solenoid valve is opened by remote control when it is transported to the container, pressure oil flows from the lower chamber to the upper chamber in the cylinder tube through the first pipe due to the load of the container. De shrinks downwardly, the container moves the movable slings is downward as described above, it is possible to reliably tilt the lower end of the fixed side slings to a predetermined inclination angle as a fulcrum.

  Thereafter, if the first solenoid valve is closed, the inclination angle of the container can be maintained at the predetermined angle, and the contents of the container can be smoothly discharged from the discharge port. After the discharge of the contents is completed, when the second solenoid valve is opened, as described above, the auxiliary winding wire is pulled downward by the restoring force due to the weight of the container, and the drum and the sprocket are moved in the opposite direction to the above. The piston rod of the hydraulic cylinder is extended upward while returning the pressure oil from the upper chamber side to the lower chamber side through the second pipe line by the chain that spans the sprocket, and the next unloading can be started. Can be automatically restored.

  Further, since the inner diameter of the first conduit is formed to be smaller than the inner diameter of the second conduit, the time for returning the hydraulic oil from the lower chamber of the hydraulic cylinder to the upper chamber through the first conduit is reduced by a second time. The time required for returning the hydraulic oil from the upper chamber of the hydraulic cylinder to the lower chamber through the pipe can be made longer. Therefore, opening the first solenoid valve allows the hydraulic oil to flow from the lower chamber of the hydraulic cylinder to the upper chamber through the first pipe. The container can be tilted in a stable state to a predetermined inclination angle while slowly returning the container to the predetermined inclination angle while the inclination angle of the container is gradually increased. The empty container can be quickly returned from the upper chamber to the lower chamber of the cylinder to quickly return the empty container to the original horizontal posture.

  The container may be lifted by a crane, as described in claim 6, in which the lower ends of the movable-side suspension line and the fixed-side suspension line are respectively placed on the upper surface of one side of the container suspender and the upper surface of the other side. It is preferable that the spreader is detachably connected, and the spreader is placed on the container to be engaged with the container, so that the spreader is operated via the spreader.

The front view which sectioned a part of container suspension support device of the present invention. The side view. The front view of the state where a container is lifted. The side view. The front view in the state where the container was inclined. FIG. 9 is a circuit diagram showing a modification of the hydraulic circuit.

  Next, a specific embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, a container suspension support device includes a suspension frame 1, and a cable such as a wire rope is attached to the suspension frame 1. The container A is suspended from the movable side suspension line 2 and the fixed side suspension line 3.

  The suspension frame 1 has a flat rectangular upper surface plate 1a that is long in the left-right direction, and upper end surfaces thereof are fixed to the lower surface at the center in the width direction at both side ends of the upper surface plate 1a, and are suspended downward from both side ends of the upper surface plate 1a. The two side frames 1b, 1b having a fixed length provided, and the front and rear lower ends of the side frames 1b, 1b are respectively erected between the front surface and the rear surface at the lower end portions of the both frame members 1b, 1b. Front and rear horizontal frames 1c and 1d each made of a channel steel having both side ends fixed to the surface thereof, and an upper end surface fixed to the lower surface center portion of the upper surface plate 1a of the suspension frame 1 and a lower end thereof being the front and rear horizontal frame members. A central vertical frame 1e fixed on the central portion of 1c, 1d, and a horizontal reinforcement fixed between the central vertical frame 1e and the other side frame 1b of the both side frames 1b, 1b and the upper facing surface. And a frame 1f.

  The upper end of the cylinder tube 4a of the hydraulic cylinder 4 is inserted into one side of the space formed between the facing surfaces of the front and rear horizontal frames 1c and 1d of the suspension frame 1, and the upper end is moved forward and backward. The hydraulic cylinder 4 is disposed on one side of the suspension frame 1 by connecting and supporting the horizontal frames 1c and 1d so that the hydraulic cylinder 4 is oriented vertically.

  As a specific structure for supporting the upper end of the cylinder tube 4a of the hydraulic cylinder 4 on the front and rear horizontal frames 1c and 1d, pins 14 and 14 are protruded from front and rear surfaces of the upper end of the cylinder tube 4a. The pins 14 are inserted into and supported by the support holes 15 extending through one side of the front and rear horizontal frames 1c and 1d, however, other support structures may be adopted.

  The piston 4b of the hydraulic cylinder 4 is provided with a piston rod 4c projecting upward and a piston rod 4d projecting downward. The upper end of the piston rod 4c projecting upward from the cylinder tube 4a. Is formed on the block-shaped head 4e. The upper end head 4e of the piston rod 4c has guide surfaces 16, 16 provided on a vertical opposing surface of a side frame 1b on one side and a central vertical frame 1e of the suspension frame 1 on both sides. Are configured to be able to move up and down in the up-down direction while sliding.

  Further, a support shaft 17 fixed to the head 4e is provided on the upper end head 4e of the piston rod 4c so as to penetrate the center between the front and rear surfaces of the head 4e. At the front and rear end portions of the support shaft 17 protruding from the surface, two movable side suspension lines 2 are engaged, and a suspension ring portion 2a formed by performing eye processing on the upper end of each of the movable suspension lines 2 is engaged. The suspension ring portions 2a of the movable suspension lines 2, 2 are prevented from being accidentally detached from the support shaft 17 by nut members fixed to both ends of the support shaft 17.

  On the other hand, a rope mounting member 5 having the same shape as the head 4e of the piston rod 4c is fixed on the horizontal reinforcing frame 1f provided on the other side of the suspension frame 1. A support shaft 18 is provided between the front and rear center portions of the front and back surfaces of the cable attachment member 5 in a manner similar to the head 4e of the piston rod 4c so that the cable attachment member 5 is penetrated. At the front and rear end portions of the support shaft 18 protruding from the front and rear surfaces, two fixed side suspension lines 3 are engaged, and a suspension ring portion 3a formed by forming an upper end portion of each of the front and rear ends with eye processing is locked. . The suspension ring portions 3a of the fixed side suspension cables 3, 3 are also fixed with nut members or the like at both ends of the support shaft 18 and are prevented from being accidentally detached from the support shaft 18.

  The fixed position of the cable attachment member 5 with respect to the suspension frame 1 is the height of the head 4e when the piston 4b of the hydraulic cylinder 4 is moved to the top dead center and the piston rod 4c is extended to the maximum. Although it is provided at the same height as the position, it may be fixed at a position below the head 4e. In short, when the piston rod 4c is extended to the maximum, What is necessary is just to comprise so that the container A may be suspended and supported by the fixed side suspension cable 3 in a horizontal state.

  As shown in FIG. 1, a hydraulic circuit 20 of the hydraulic cylinder 4 includes a first conduit 21 connected between upper and lower chambers in a cylinder tube 4a partitioned by a piston 4b to communicate these upper and lower chambers, A first solenoid valve 22 provided in the first conduit 21 and operated by remote control by a controller to flow pressure oil only from the lower chamber to the upper chamber in the cylinder tube 4a, and the first solenoid valve 22 in the cylinder tube 4a. A second conduit 23 connected between the upper and lower chambers to communicate these upper and lower chambers, and is provided in the second conduit 23 and is operated by a remote control by a controller to operate from the upper chamber in the cylinder tube 4a. A second solenoid valve 24 that allows the pressure oil to flow only in the lower chamber direction, and further, the inner diameter of the second conduit 23 is formed to be larger than the inner diameter of the first conduit 21. .

  The first pipe 21 and the second pipe 23 communicate with each other between the upper and lower chambers of the cylinder tube 4a in an independent state. However, as shown in FIG. The second pipe 23 has a large diameter, and the first pipe 21 having a small diameter is connected to a pipe portion communicating with the upper and lower chambers of the cylinder tube 4a in the second pipe 23. May be.

  When the piston rod 4c of the hydraulic cylinder 4 is contracted from a state in which the container A is hung horizontally by the movable side suspension line 2 and the fixed side suspension line 3, the upper end of the piston rod 4c The movable side suspension line 2 connected to the portion 4e moves downward, and the container A can be inclined downward with the lower end of the fixed side suspension line 3 as a fulcrum, but the stroke length of the piston rod 4c is reduced. In this case, since the content of the container A is not smoothly discharged from the discharge port of the container A in which the inclination angle of the container A is relatively small and inclined downward, the hydraulic cylinder 4 is mounted on the upper surface plate 1a of the suspension frame 1. A container inclining mechanism E for further inclining the container A in the same direction in conjunction with the downward movement (shrinkage) of the piston rod 4c is provided.

  Next, an example of the structure of the container tilting mechanism E will be described.

  Brackets 6 and 6 are provided vertically on the front and rear end edges of the upper surface plate of the suspension frame 1 so as to project upward, and the center of the front and rear brackets 6 and 6 at the upper end, that is, the piston Both ends of the rotating shaft 7 are supported at the upper end located above the center between the head 4e of the rod 4c and the cable attachment member 5.

  More specifically, the rotating shaft 7 covers the short cylinders 19, 19 serving as bearings at both ends facing in the front-rear direction, and attaches these short cylinders 19, 19 to the front and rear brackets 6, 6. By being fixed to the center of the upper end in a penetrating state, both ends of the rotating shaft 7 are rotatably supported at the upper ends of the front and rear brackets 6, via short cylindrical bodies 19, 19.

  At the center of the rotating shaft 7 exposed between the front and rear brackets 6, 6, the center of the sprocket 8 is fixed and at the front or rear in the longitudinal direction of the rotating shaft 7, the diameter is larger than that of the sprocket 8. The sprocket 8 and the drum 9 are integrally rotated (rotated) in the same direction by the rotation of the rotation shaft 7.

  On the sprocket 8, the upper part of a chain 10 of a fixed length is wound around the sprocket 8 almost one round, and the tip part is fixed to the sprocket 8, while the lower part of the chain 10 is hung down from the sprocket 8. The lower end is connected to the head 4e of the piston rod 4c of the hydraulic cylinder 4 through a through hole provided in the upper surface plate 1a of the frame 1. It should be noted that the chain 10 may be in a state in which one end of the chain 10 is extended over the sprocket 8 without being fixed to the sprocket 8.

  On the other hand, the upper part of the auxiliary wire 11 is wound around the outer peripheral surface of the drum 9 several times, and the leading end of the auxiliary wire 11 is fixed to the drum 9. Is detachably connected to the other side of the container A to which the container A is connected. The lower end of the auxiliary wire 11 may be connected to the container A at the center of the other end of the container A in the front-rear direction. Alternatively, the auxiliary wire 11 may be bifurcated into the container A. The lower end may be detachably connected to the front and rear portions at the other end of the front end.

  Further, the auxiliary wire 11 is not wound around the drum 9 several times as described above, but the upper part of a fixed length is wound around the outer peripheral surface of the drum 9 to almost one turn, and the leading end is connected to the drum 9 It may be fixed to. The tilt mechanism E of the container A is configured as described above.

  Further, a locking hole 13 for locking to a hook C attached to the lower end of the hoisting rope B of the crane is provided at the front and rear lower ends of the inverted U-shaped hanging tool 12 provided at the center of the upper end. Short cylindrical bodies 19, 19 at both ends of the rotating shaft 7 protruding from upper ends of the front and rear brackets 6, 6 are supported.

  In order to suspend the container A by the container suspension device configured as described above, each upper end is connected to a support shaft 17 fixed to the upper end head 4e of the piston rod 4c of the hydraulic cylinder 4. The lower ends of the two movable hanging ropes 2 and 2 are detachably connected to a locking portion provided on the upper surface of one side of the container A on which the door is provided, and the other side of the hanging frame 1. The lower ends of the two fixed suspension lines 3, 3 connecting the upper ends thereof to the support shafts 18 attached to the cable attachment members 5 provided on the upper portion are provided on the upper surface of the other side of the container A. 3 and 4, it may be suspended by using a generally known container suspending spreader D as shown in FIGS. preferable.

  The container suspending spreader D has two front and rear movable side hanging ropes 2, 2 at the front and rear end portions on the upper surface at equal intervals from the center in the length direction to the left and right sides. A locking tool (not shown) is provided to connect the lower ends of the front and rear fixed side suspending lines 3 and 3 so as to be detachable from each other. A lock (not shown) is provided at the other end of the upper surface for detachably connecting the lower end of the auxiliary winding wire 11 drawn downward from the drum 9. Further, twist lock fittings d are provided at four corners of the container suspending spreader D so as to be detachably connected to corner fittings (not shown) provided at the four corners of the upper end face of the container A.

  Next, using the container suspension device configured as described above, a container A containing powdery and granular materials (hereinafter, referred to as contents) such as earth and sand, chips, and grains such as soybeans is prepared. A usage mode in which contents are discharged from the container A to the outside while the container A is suspended and supported at a place where the container A is unloaded by a crane will be described.

  First, the suspension frame 1 is suspended from the lower end hook C of the hoisting cable B of the crane, and the upper end is supported by the upper end head 4e of the piston rod 4c of the hydraulic cylinder 4 disposed on the suspension frame 1. A cable attachment member that connects the lower ends of the two movable front and rear suspension lines 2 and 2 to the front and rear ends on one side of the container suspension spreader D and is fixed to the other side of the suspension frame 1. The lower ends of two front and rear fixed suspension lines 3 and 3 supporting the upper end portion 5 are connected to the front and rear end portions on the other side of the container suspension spreader D, and further provided on the suspension frame 1. The lower end of the auxiliary winding wire 11 drawn from the drum 9 is connected to the other end of the container suspending spreader D.

  An outlet for the contents of the container A is provided on one side of a four-sided peripheral wall composed of front and rear surfaces and both side surfaces, and can be opened and closed by a door a having an upper end pivotally connected to this one side. The spreader D is closed so that one side in the length direction of the spreader D connecting the movable side suspension cable 2 is located on one side provided with the door a of the container A. Land on the container A.

  In this state, the crane is operated, the container suspending spreader D is lifted by the movable suspending line 2 and the fixed suspending line 3 hanging from the suspending frame 1, and the spreader D is moved to the container collecting location to move the spreader D to a desired position. The spreader D is landed on the container A, and the twist lock fittings d provided at the four corners thereof are connected to the corner fittings of the container A, so that the container A can be lifted.

  When the container A is lifted by the crane, the piston 4b of the hydraulic cylinder 4 provided on the suspension frame 1 is located at the top dead center of the cylinder tube 4a, and the piston rod 4c is moved upward from the cylinder tube 4a to the maximum. In this state, the first and second solenoid valves 22, 24 provided in the first and second conduits 21, 23 of the hydraulic circuit 20 are closed, so that the piston rod 4c is moved downward. Is kept in a state where it is prevented from contracting.

  Therefore, when the container A is lifted by the crane, the load of the container A acts in the direction of contracting the piston rod 4c downward. However, since the contraction of the piston rod 4c is prevented as described above, The spreader is connected to the upper end head 4e of the rod 4c and the rope attachment member 5 fixed to the other side of the suspension frame 1 and is connected to the movable side suspension lines 2, 2 and the fixed side suspension lines 3, 3, respectively. Via D, the container A can be hung horizontally as shown in FIG.

  When the container A is lifted by the crane and conveyed to the unloading place and the first solenoid valve 22 provided in the first conduit 21 of the hydraulic circuit 20 is opened by remote control at the unloading place, the piston of the hydraulic cylinder 4 is opened. The pressure oil in the lower chamber of the cylinder tube 4a is sent to the upper chamber through the first pipe line 21 by the load of the container A acting on the piston rod 4c of the cylinder rod 4b via the movable-side hanging cable 2 while the lower pipe 4b is moved downward. The piston rod 4c contracts, and the movable hanging line 2 connected to the upper end head 4e of the piston rod 4c moves downward together with the piston rod 4c, and the movable hanging line 2 moves through the spreader D via the spreader D. As shown in FIG. 5, one side of the container A suspended and supported by the lower side of the fixed side hanging cable 3 suspending the other side of the container A via the spreader D as a fulcrum. Inclination The discharge opening closed by the door a is moved obliquely downward.

  Further, due to the downward contraction of the piston rod 4c of the hydraulic cylinder 4, the chain 10 connected to the upper end surface of the upper end head 4e of the piston 4b is pulled downward, and the sprocket 8 Is rotated clockwise in the figure, and the drum 9 fixed to the rotating shaft 7 together with the sprocket 8 is rotated integrally with the sprocket 8 by a predetermined angle in the same direction by the rotation of the rotating shaft 7. Due to this rotation, the auxiliary winding wire 11 whose upper part is wound around the drum 9 and whose lower end is connected to the other end of the spreader D that has landed on the container A is wound up on the outer peripheral surface of the drum 9. The other side of the container A is lifted upward with the lower end of the movable side suspension cable 2 as a fulcrum, and the container A is further inclined.

  At this time, the suspension frame 1 suspended via the brackets 6, 6 supported via the rotation shaft 7 at the lower end of the suspension device 12, which is engaged with the hook C of the crane, is also a hydraulic cylinder. Due to the contraction of the piston rod 4c of FIG. 4 and the pulling of the auxiliary winding wire 11 on the outer peripheral surface of the drum 9, it is rotated and inclined to the other side around the rotation shaft 7 as shown in FIG. With this inclination, the container A suspended and supported by the movable-side hanging cable 2 and the fixed-side hanging cable 3 moves so as to retreat toward the other side while further tilting.

  As described above, as an example of a specific inclination angle of the container A that is inclined by the operation of the hydraulic cylinder 4, the length of the movable side suspension line 2 and the fixed side suspension line 3 is 5240 mm, and the length of the movable side suspension line 2 is 5240 mm. The distance between the connecting points connecting the lower ends of both sides of the spreader D with the fixed side suspension cable 3 is 3000 mm, the maximum stroke length of the piston rod 4c of the hydraulic cylinder 4 is 1000 mm, the diameter of the sprocket 8 is 500 mm, When the diameter of the drum 9 is 1350 mm, the container A can only be configured to have an inclination angle of about 20 degrees only by the stroke of the piston rod 4c. By adopting the tilting mechanism E by winding up, the container A can be configured so that the tilt angle of the container A becomes approximately 40 degrees.

  In this way, in the unloading place, by opening the first solenoid valve 22, the container A is greatly inclined to a predetermined inclination angle, and the door a is directed to a truck or a container waiting at the unloading place. Then, when the first electromagnetic valve 22 is closed and the door a of the container A is opened by remote control or the like, the contents are discharged from the discharge port provided on one side of the container A, and It can be put into a carrier or container.

  At this time, as the contents are discharged from the container A, a restoring force is generated such that the container A moves upward on one side and downward on the other side due to its own weight. By closing, the pressure oil in the hydraulic cylinder 4 is prevented from returning from the upper chamber side to the lower chamber side through the first pipe line 21, and the second solenoid valve 24 keeps the closed state. The contents of the container A can be smoothly discharged from the discharge port in a short time while maintaining the large inclination angle.

  When all the contents of the container A are discharged and the container A becomes empty, the second solenoid valve 24 provided in the second circuit 23 is opened by remote control. By opening the second solenoid valve 24, the upper chamber and the lower chamber of the hydraulic cylinder 4 communicate with each other through the second conduit 23, and the auxiliary winding connected to the other end of the container A by the restoring force of the container A While the wire 11 is pulled downward from the drum 9, the drum 9 is rotated in the opposite direction (counterclockwise direction in the figure) to rotate the sprocket 8 integrally with the drum 9 in the same direction. Then, the piston of the hydraulic cylinder 4 that moves in the opposite direction to the above so that the chain 10 bridged over the sprocket 8 returns to the original hooked state and connects the lower end of the chain 10 to its head. The rod 4c extends upward while returning the pressure oil in the upper chamber to the lower chamber side through the second conduit 23 by the piston 4b.

  At this time, since the inner diameter of the second conduit 23 is formed larger than the inner diameter of the first conduit 21, the hydraulic cylinder 4 is opened by opening the second solenoid valve 23 provided in the second conduit 23. The internal pressure oil can be quickly returned from the upper chamber to the lower chamber of the hydraulic cylinder through the second pipeline 23, and the empty container can be quickly returned to the original horizontal posture.

  When the piston rod 4c extends and returns to the original position in this manner, the empty container A is suspended horizontally by the movable-side suspension line 2 and the fixed-side suspension line 3, and the empty container A is appropriately removed. And the spreader D is removed from the container A at that location, and the crane is operated with the movable hanging rope 2 and the fixed hanging rope 3 to suspend the container. To lift the next container A via the spreader D, transport it to the unloading place, tilt the container A at the unloading place, and discharge the contents by opening the door a of the container A. .

  In the above embodiment, the first and second conduits 21 and 23 for connecting the upper and lower chambers to the hydraulic cylinder 4 are provided, and the first and second conduits 21 and 23 are respectively provided with the first and second conduits 21 and 23. Although the two solenoid valves 22 and 24 are provided, the upper and lower chambers of the hydraulic cylinder 4 are communicated by a single conduit, and even if the hydraulic circuit is provided with one solenoid valve in this conduit, the container A can be tilted. Although the speed of returning to the horizontal state becomes slower, the object of the present invention can be achieved.

DESCRIPTION OF SYMBOLS 1 Suspension frame 2 Movable hanging cable 3 Fixed hanging cable 4 Hydraulic cylinder
4a Cylinder tube
4b piston
4c Piston rod 5 Cable attachment member 7 Rotating shaft 8 Sprocket 9 Drum
10 chains
11 Auxiliary wire
12 Suspension
20 Hydraulic circuit A Container B Crane hoisting line D Spreader E Tilt mechanism

Claims (6)

  A suspension frame attached to the crane in a suspended state via a suspension, a hydraulic cylinder disposed on the suspension frame, and an upper end connected to an upper end of a piston rod projecting upward from a cylinder tube of the hydraulic cylinder, A movable hanging line having a lower end detachably connected to an upper surface of one side of the container where the door is provided, and an upper end connected to the suspension frame, and a lower end being engaged and disengaged with the upper surface of the other side of the container; And a fixed-side hanging cable to be freely connected, wherein the hydraulic cylinder is operated to move the movable-side hanging cable downward to tilt the container with the lower end of the fixed-side hanging cable as a fulcrum. And a container tilting mechanism for operating the container together with the hanging frame in a direction to further tilt the container in conjunction with the operation of the hydraulic cylinder.   When the hydraulic cylinder is not operated, the piston rod connecting the upper end of the movable side suspension cable is extended to the position reaching the top dead center, and the container is configured to suspend and support the container in a horizontal position. The container suspension support device according to claim 1, wherein:   The container inclining mechanism supports a rotating shaft that fixes the center of a sprocket and a drum having a diameter larger than that of the sprocket to the center of the upper end of a bracket erected on the suspension frame. It is supported by the lower end of the hanging tool, and further, the upper end of the chain is hung over the sprocket and the lower end of the chain is connected to the tip of the piston rod of the hydraulic cylinder, while the upper end is The container suspension support device according to claim 1, wherein the lower end of the auxiliary wire fixed to the outer peripheral surface of the drum is detachably connected to the upper surface of the other end of the container.   The hydraulic circuit of the hydraulic cylinder is connected between the upper and lower chambers in the cylinder tube separated by the piston and connects the upper and lower chambers with each other, and is provided in the pipe and operated by remote operation. 2. The container suspension and support device according to claim 1, further comprising an electromagnetic valve for opening and closing the conduit.   The hydraulic circuit of the hydraulic cylinder is connected between the upper and lower chambers in the cylinder tube partitioned by the piston and connects the upper and lower chambers to each other, and the second pipe connects the upper and lower chambers to each other. A first solenoid valve which is operated by remote control in the first conduit to flow the pressure oil only from the lower chamber to the upper chamber in the cylinder tube, while the second conduit is remotely controlled. A second solenoid valve is provided to actuate and allow the pressure oil to flow only from the upper chamber to the lower chamber in the cylinder tube, and the inner diameter of the second conduit is larger than the inner diameter of the first conduit. The container suspension support device according to claim 1 or 4, wherein the container suspension support device is formed in the container.   The lower ends of the movable side suspension line and the fixed side suspension line are detachably connected to the upper surface of one side of the container suspension spreader and the upper surface of the other side, which are detachably connected to the container by landing on the container. The container suspension support device according to claim 1, wherein the container is supported.

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