JP3994062B2 - Container with canopy opening and closing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a container with a canopy opening / closing device .
[0002]
[Prior art]
In a container equipped with a dump discharge saddle and a canopy on the upper side (see, for example, Patent Document 1), if a full load is dumped with the canopy fully closed, the inside of the container is negative. Pressure and the canopy may be deformed. Therefore, it is necessary to open the canopy in advance when dumping. The canopy is opened and closed by turning the arm, and this arm is driven by a motor.
[0003]
[Patent Document 1]
Japanese Unexamined Patent Publication No. 2000-177795 (Pages 2 and 3, FIGS. 1 and 2)
[0004]
[Problems to be solved by the invention]
In the canopy opening and closing device as described above, the canopy cannot be opened if the motor fails and its output shaft does not rotate. In this case, if the dump is forcibly discharged, the canopy may be deformed. On the other hand, if priority is given to the prevention of deformation of the canopy, the dump cannot be effectively discharged. For such an emergency, it is conceivable to provide a small window that can be manually opened and closed on the top surface and canopy of the container main body. However, since the amount of air flowing into the small window is insufficient, the inside of the container has a negative pressure. It is hard to avoid.
[0005]
In view of the above-described conventional problems, an object of the present invention is to provide a container with a canopy opening / closing device that enables dump discharge while preventing generation of negative pressure even when a motor fails.
[0006]
[Means for Solving the Problems]
The container with a canopy opening and closing device of the present invention opens and closes the canopy based on a container main body having a dump discharge door, a canopy that closes an opening provided at an upper portion of the container main body , and a driving force of a motor. An opening / closing device having a connecting portion capable of turning the arm and disconnecting the drive shaft of the arm from the motor; and a manual opening / closing assisting device capable of supplying torque to the arm when the connecting portion is in a disconnected state; The manual opening / closing auxiliary device has one end pivotally attached to the container main body side and the other end connectable to a member provided integrally with the drive shaft, and the connection portion is in a disconnected state. The turnbuckle is configured to apply torque to the arm by an axial tensile force to open and close the canopy and to keep the canopy open by an axial tensile force .
In the container with a canopy opening / closing device as described above, the drive shaft and the arm can be released from the motor and the canopy can be manually opened by disconnecting the connecting portion when the motor fails. If the canopy can be opened to some extent, sufficient inflow of air is secured from the opening. Therefore, even if the motor breaks down, dumping can be performed while preventing the generation of negative pressure.
[0007]
Further, since and a donor can manually open and close the auxiliary device torque to the arm when the connecting section in a state of disconnection, manual opening and closing the auxiliary device is permanent, thereby, performing manual opening and closing operation immediately when needed be able to.
[0008]
Moreover, manually opening and closing the auxiliary device has one end pivotally attached to the container main body side and the other end connectable to a member provided integrally with the drive shaft of the turnbuckle der because, integrally with the drive shaft A manual opening / closing operation can be easily performed with a simple and inexpensive configuration in which a turnbuckle is connected to the provided member for operation. Moreover, it is safe because the canopy can be reliably held in the open state. Further, it is convenient because it can be operated with a spanner or the like of a general-purpose tool.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1, 2, 3 and 4 are a plan view, a side view, a front view and a rear view, respectively, of a container provided with a canopy opening / closing device according to an embodiment of the present invention. 1 and 2, the container main body 2 of the container 1 is formed in a box shape between four support columns 3 provided on the front, rear, left and right sides, and a frame-shaped partition 2a (see FIG. 2) erected on the top. (Refer to -4.) It has the opening A in it. Behind the container main body 2 is provided a dump door 4 (shown only in FIG. 2), and a double canopy 5 that closes the upper opening A. The two canopies 5 in the closed state are slightly inclined so as to form the roof of the container 1 (see FIGS. 3 and 4).
[0010]
Next, the opening / closing device 6 of the canopy 5 will be described. In FIG. 1 (see also FIGS. 2 to 4), it is the pair of front and rear arms 7 that directly drives the canopy 5 to open and close. A shaft 8 or 8A is fixed to the base end portion of each arm 7, and these shafts 8 and 8A are rotatably supported by a bracket 10 attached on the container main body 2. Each arm 7 rotates about the shafts 8 and 8A, and is connected to the canopy 5 via a pin 28 (FIGS. 3 and 4) on the rotating tip side. Here, the shaft 8 is a simple support shaft, but the shaft 8A is a drive shaft that is rotationally driven by a motor 11 with a built-in reduction gear attached to the container body 2. The left and right arms 7 are linked to a pulley 9 fixed to the shafts 8 and 8A by a chain 12 (FIGS. 3 and 4) stretched in a “8” shape. The front and rear arms 7 are also linked via a chain 13 (FIGS. 3 and 4) and a connecting shaft 14 (FIGS. 1 to 4). Accordingly, the two canopies 5 are driven in synchronization by the pair of front and rear arms 7 based on the operation of the motor 11 to be opened and closed. The canopy 5 is completely closed, that is, fully closed when the pivotal tips of the pair of left and right arms 7 come into contact with each other (see FIGS. 3 and 4).
[0011]
A piston rod 15b of a spring cylinder 15 is connected to the shaft 8A as a drive shaft via a connecting member 16. A base end portion of the cylinder tube 15 a of the spring cylinder 15 is pivotally attached to a bracket 17 fixed to the container main body 2. A compression spring (not shown) is loaded inside the spring cylinder 15, and the piston rod 15b is urged in a direction to be drawn into the cylinder tube 15a.
[0012]
3 and 4, the guide roller 18 is attached so as to be rotatable about the central axis by a bracket 19 erected on the container main body 2. The guide roller 18 rolls into contact with the canopy 5 and guides it in the tangential direction. The cushion rubber 20 attached to the bracket 19 is provided to bring the arm 7 into contact.
[0013]
FIG. 5 is an enlarged view of a part of FIG. In FIG. 5 (see also FIGS. 1 and 2), the canopy 5 is supported by a guide roller 18. An engagement pin 21 is planted on the outer end of the canopy 5, and the engagement pin 21 is engaged with an engagement groove 19 a provided in the bracket 19.
On the other hand, the tip of the piston rod 15 b of the spring cylinder 15 is connected to one end of the connecting member 16 via a pin 22. The connecting member 16 is fixed to the shaft 8A and rotates together with the arm 7. A hole 16 a is formed on the upper end side of the connecting member 16.
In addition, brackets 23 and 24 for attaching a turnbuckle 25 as a manual opening / closing auxiliary device are fixed to the upper surface of the container body 2. The right end of the turnbuckle 25 is pivotally attached to the bracket 24 by a pin 26, and the left end is temporarily fixed to the bracket 23 by a detachable bolt 27.
[0014]
The normal opening / closing operation of the canopy 5 configured as described above will be described with supplementing the detailed structure description.
6-8 is a figure which shows the canopy 5 and the arm 7 grade | etc., Seen from the front side of the container 1 (however, illustration of the unnecessary part on description is abbreviate | omitted). FIG. 6 shows a state in which the rotating tips of the pair of left and right arms 7 are in contact with each other and the canopy 5 is closed. In this state, the canopy 5 is placed on the partition 2a of the container main body 2 via a packing (not shown), and the opening A (FIG. 1) is closed.
[0015]
When the canopy 5 is in the closed position as described above, the shaft 8A exists on the substantially extension line of the central axis of the piston rod 15b, and the urging force of the spring cylinder 15 that tries to retract the piston rod 15b causes the shaft 8A to move. Do not generate torque to rotate. Therefore, the other arms (the left arm 7 and the pair of rear arms 7) linked with the arm 7 do not generate torque, and the canopy 5 is stable under its own weight.
[0016]
Next, when the motor 11 (FIG. 1) is operated to rotate the right arm 7 together with the shaft 8A in the clockwise direction, the left arm 7 in FIG. The same applies to arm 7.) When the arm 7 rotates in the standing direction, the canopy 5 is lifted and slides on the guide roller 18 as shown in FIG. Further, the connecting member 16 also rotates with the rotation of the arm 7 and the shaft 8A, and as a result, the piston rod 15b is slightly pulled out against the compression spring. Therefore, the driving force in the closing direction is also applied to the arm 7, but this driving force is smaller than the driving force in the opening direction applied to the arm 7 by the motor 11.
[0017]
When the arm 7 further rotates from the state shown in FIG. 7, the arm 7 falls down and comes into contact with the cushion rubber 20 as shown in FIG. 8, and the canopy 5 hangs down substantially vertically. A cushion rubber 29 is provided at the end of the outer surface of the canopy 5 for cushioning when it comes into contact with the container body 2. Thus, the canopy 5 is completely opened and the opening A is fully opened. Thereafter, the motor 11 is stopped. In this state, the piston rod 15b is largely pulled out against the compression spring, and a driving force in the closing direction is applied to the arm 7 via the connecting member 16. Although this driving force is larger than the state shown in FIG. 7, the weight of the canopy 5 is excellent and stable in the state shown.
[0018]
The closing operation of the canopy 5 is performed by the reverse operation to the above. When the closing operation is started from the state of FIG. 8, the load applied to the motor 11 is reduced by the driving force in the closing direction by the cylinder piston 15.
The arm 7 can be locked with the canopy 5 closed by a locking device (not shown).
[0019]
Next, a manual opening / closing operation when the motor 11 fails will be described. Since the motor 11 has a built-in reduction gear, it is extremely difficult to forcibly rotate it from the output shaft side.
FIG. 9 is a detailed view of the turnbuckle 25. The turnbuckle 25 is configured by a hexagonal column nut shaft 251 in which a screw hole 251 a penetrating the inside is formed, and a pair of yokes 252 screwed to the nut shaft 251. The screw hole 251a has a screw direction changed at the center, and one side is a right-hand thread and the other side is a left-hand thread. On the other hand, the yoke 252 is formed by welding a plate 252b having a hole 252c to an end of a rod (screw rod) 252a screwed to the nut shaft 251.
[0020]
The turnbuckle 25 configured in this manner changes the distance between the pair of holes 252c within the range of screwing between the nut shaft 251 and the rod 252a by rotating the nut shaft 251 about the axis. Can do. Further, the axial expansion and contraction force when the nut shaft 251 is rotated is large enough to withstand opening and closing of the canopy 5, and the nut shaft 251 cannot be rotated by a force from the axial direction. .
[0021]
FIG. 10 is a view of the connection portion 30 between the motor 11 and the shaft 8A as viewed from the direction of the arrow X in FIG. In the figure, the connecting portion 30 has a driving side flange 31 fixed to the output shaft 11a of the motor 11 and a driven side flange 32 fixed to the end portion of the shaft 8A fixed to each other by a plurality of bolts 33. Is. Normally, the driving force is transmitted from the output shaft 11a of the motor 11 to the shaft 8A that is the driving shaft of the arm 7 (FIG. 1) via the connection portion 30.
[0022]
By loosening and removing the bolt 33, the drive side flange 31 and the driven side flange 32 are disconnected from each other, and the shaft 8A can be rotated regardless of the output shaft 11a of the motor 11. In this way, after the connecting portion 30 is in the disconnected state, the turnbuckle 25 is connected.
[0023]
FIG. 11 is a view showing a state in which the left end side of the turnbuckle 25 in the state shown in FIG. 5 is removed from the bracket 23 and connected to the hole 16a of the connecting member 16 using the bolt 27. After connecting the turnbuckle 25 to the connecting member 16 in this way, the nut shaft 251 (FIG. 9) of the turnbuckle 25 is turned in a predetermined direction by using a tool such as a spanner to shorten the entire length of the turnbuckle 25. To do. As a result, the connecting member 16 and the arm 7 integrated therewith rotate in the clockwise direction, and the canopy 5 opens as shown in FIG. Even if the tool is removed at this time, the turnbuckle 25 is not loosened by the force from the axial direction, and the canopy 5 is held in that position. Therefore, it is safe. By opening the canopy 5 to the above degree, a sufficient air inflow amount is secured from the opening A (FIG. 1). Therefore, even when the motor 11 breaks down, it is possible to discharge the dump while preventing the negative pressure from being generated and preventing the canopy 5 from being deformed.
Further, it is possible to close the canopy 5 from the position shown in FIG. 12 by turning the nut shaft 251 of the turnbuckle 25 in the reverse direction.
[0024]
The manual opening / closing auxiliary device using the turnbuckle 25 as described above can be easily manually opened / closed with a simple and inexpensive configuration in which the turnbuckle 25 is connected to the connecting member 16 and operated. Moreover, since the canopy 5 can be securely held in a slightly opened state, it is safe and convenient because it can be operated with a spanner or the like of a general-purpose tool. Furthermore, since one end of the turnbuckle 25 is pivotally attached to the container main body 2 and is permanently installed, there is no risk of loss, and the turnbuckle 25 can be used immediately when necessary.
[0025]
In the above embodiment, the turnbuckle 25 is configured to be connected to the connecting member 16, but it is also possible to connect the turnbuckle 25 directly to the arm 7. In short, it may be connected to a member provided integrally with the shaft 8A of the arm 7. The manual opening / closing tool is not limited to the turnbuckle 25 and may be any manual opening / closing auxiliary device capable of supplying torque to the arm 7 when the connecting portion 30 is disconnected. For example, the arm 7 can be lifted using a jack or the like.
Further, the canopy 5 is not limited to the sliding double opening type of the above embodiment, and a similar manual opening / closing auxiliary device can be provided even if the canopy 5 is a rotation type or a single opening type.
[0026]
【The invention's effect】
According to the present invention configured as described above, since the connecting portion capable of disconnecting the drive shaft of the arm from the motor is provided, the connecting portion is disconnected when the motor fails, so that the drive shaft and the arm are connected to the motor. The canopy can be manually opened. If the canopy can be opened to some extent, sufficient inflow of air is secured from the opening. Therefore, even if the motor breaks down, dumping can be performed while preventing the generation of negative pressure.
[Brief description of the drawings]
FIG. 1 is a plan view of a container with a canopy opening / closing device according to an embodiment of the present invention.
FIG. 2 is a side view of the container with a canopy opening / closing device.
FIG. 3 is a front view of the container with a canopy opening / closing device.
FIG. 4 is a rear view of the container with a canopy opening / closing device.
FIG. 5 is an enlarged view of a part of FIG. 3;
FIG. 6 is a view showing a canopy, an arm, and the like as seen from the front side of the container, and shows a fully closed state of the canopy.
FIG. 7 is a diagram showing a canopy, an arm, and the like as seen from the front side of the container, and shows a state in the middle of opening and closing the canopy.
FIG. 8 is a view showing a canopy, an arm, and the like, as seen from the front side of the container, showing a fully open state of the canopy.
FIG. 9 is a detailed view of a turnbuckle.
10 is a view of a motor-shaft connecting portion viewed from the direction of arrow X in FIG.
FIG. 11 is a view showing a state where the turnbuckle in the state shown in FIG. 5 is connected to a connecting member.
FIG. 12 is a diagram showing a canopy, an arm, and the like as seen from the front side of the container, and shows a state where the canopy is opened to some extent by manual operation.
[Explanation of symbols]
2 Container body 4 Shishido (door)
5 Canopy 6 Opening and closing device 7 Arm 8A Axis (drive shaft)
11 Motor 25 Turnbuckle (Manual open / close assist device)
A opening

Claims (1)

A container body having a dump discharge door ;
A canopy that closes the opening provided in the upper part of the container body ,
An opening and closing device having a connecting portion capable of rotating an arm for opening and closing the canopy based on a driving force of a motor and disconnecting the driving shaft of the arm from the motor ;
A manual opening / closing auxiliary device capable of providing torque to the arm when the connection portion is in a disconnected state;
With
The manual opening / closing auxiliary device has one end pivotally attached to the container main body side and the other end connectable to a member provided integrally with the drive shaft, and the connection portion is disconnected. With a canopy opening / closing device characterized by a turnbuckle that applies torque to the arm by an axial tensile force to open and close the canopy and holds the canopy in an open state by an axial tensile force Container .

Images