JPS6326390Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a single rope bucket tote opening rope operating device for manipulating the opening rope of a single rope bucket tote.

(Prior Art) In a single rope bucket cart, when you grab an object, carry it to a destination, open the bucket at that destination, and release the object you are holding, you need to pull the release rope to unlock the bucket.

Conventionally, open ropes have been operated by a dedicated rope puller.

However, manual operation has the drawback of increasing labor costs and is not suitable for the current situation.

In addition, in recent years, methods have been developed to release the lock for closing the bucket, such as controlling the operating device inside the bucket by wireless or controlling the operating device through a captire.
The disadvantage was that the equipment was delicate and could easily break down during operation.

(Purpose of the invention) In view of the above-mentioned drawbacks of the conventional rope, the present invention adopts the robust conventional rope operation method as is, and allows the operator to easily operate the opening rope by operating a switch. The purpose is to provide an open rope operating device for buckets.

(Structure of the Invention) The open rope operating device for a single rope bucket tote according to the present invention includes a rope winding drum that is loosely supported on a drive shaft and that winds an end of an open rope of a single rope bucket tote, and A female cone attached to the winding drum and a male cone, which rotates together with the drive shaft and slides in the axial direction to hang onto and unhook the female cone, are always in the detached state. a rope winding control clutch that transmits rotational force to the rope winding drum; an operating shaft that is connected to the drive shaft by a chain or the like and transmits its rotation to the rope winding drum; When the rope is slack and no load due to its tension is applied to the rope take-up drum, the rotational force is transmitted to the rope take-up drum, and when the open rope is tensed and a load due to the tension is applied to the rope take-up drum. , a torque detection clutch that operates to prevent rotational force from being transmitted to the rope winding drum by idling; a female cone fixed to the driven side of the torque detection clutch; The reversing mechanism is configured such that the male cone is normally latched onto the female cone and the male cone is normally latched onto the female cone, and the rotational force of the rope winding drum during reversal is not transmitted to the torque detection clutch. a force isolation clutch; a reversal detector for activating the reversal of the rope take-up drum to disengage the male cone from the female cone of the torque sensing clutch; and a brake device that stops only the rotation in the reverse direction by stopping the reverse rotation, thereby activating the reverse rotation detector and relatching the male cone of the torque detection clutch to the female cone. It is.

According to such an opening rope operating device, it is possible to automatically open the bucket. In particular, the presence of the torque-sensing clutch allows the release rope to be wound on the rope winding drum at all times without slack, thereby preventing the release rope from becoming slack and interfering with subsequent operations. In addition, this torque detection clutch acts so as not to transmit rotational force when a load above a certain level is applied, so it is possible to prevent malfunctions such as unnecessary winding of the release rope and unnecessary release of the bucket. Furthermore, in this device, a reversing force cutoff clutch is interposed in the thread that transmits the rotational force from the torque detection clutch to the rope take-up drum, so that the rope take-up drum will not be affected by the sudden release of the rope when the bucket is lowered. It is possible to prevent a high-speed reversing force from being applied to the torque detection clutch, thereby protecting the torque detection clutch.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 to 3. As shown in the figure, the open rope operating device for a single rope bucket tote of this embodiment has a geared motor 2 installed at a required height on a mounting base 1, and an output shaft 3 of this motor 2 has a drive shaft 4. are connected. The drive shaft 4 is rotatably supported by a bracket 5 that stands up from the installation base 1.
A rope winding drum 7 is rotatably supported concentrically on the outer periphery of the drive shaft 4 via a bearing 6. One end side of an opening/closing rope 42 for operating the opening/closing of the single rope bucket is wound around the rope winding drum 7. Rotary force is transmitted to the rope winding drum 7 from the drive shaft 4 via a rope attachment control 7 latch 8. The rope winding control clutch 8 has a female cone 9 concentrically fixed to the rope winding drum 7 and is fitted concentrically around the outer periphery of the drive shaft 4 so that it does not rotate with respect to the drive shaft 4. The main body is a female cone 10 which is not able to move but is slidable in the axial direction. An operating groove 11 is provided in a circumferential direction in a part of the outer periphery of the male cone 10, and an intermediate portion of a clutch lever 12 is engaged with this operating groove 11.
One end of the clutch lever 12 is pivotally supported by a fixed system,
The other end is connected to the first solenoid 13.
The male cone 10 is normally urged away from the female cone 9 by a spring built into the first solenoid 13.

A transmission shaft 14 is provided parallel to the drive shaft 4 and rotatably supported by a bearing 15. Drive vehicle 4
The rotational force is generated by a small sprocket 16 attached to the drive shaft 4, a large sprocket 17 attached to one end of the transmission shaft 14, and both sprockets 16,
The power is transmitted to the transmission shaft 14 by a chain 18 extending between the two. Transmission shaft 14
The rotational force is generated by a small sprocket 19 attached to the other end of the transmission shaft 14, a large sprocket 20 attached to the outer periphery of the female cone 9, and a chain 21 stretched between both sprockets 19 and 20. It is adapted to be transmitted to the rope winding drum 7. In this case, the number of teeth on the small sprockets 16, 19 is equal to each other, and the number of teeth on the small sprockets 17, 19 is equal to each other.
The number of teeth of 20 is selected to be equal to each other.

A torque detection clutch 22, such as a commercially available slip clutch, is provided in the middle of the transmission shaft 14.
When the opening/closing rope a is slack and no load is applied to the rope take-up drum 7 due to its tension, the rotational force is transmitted to the rope take-up drum 7, while when the open rope is stretched, the load due to the tension is applied to the rope take-up drum 7. When activated, the rope winding drum 7
The structure is such that it does not transmit rotational force to the

In the middle of the transmission shaft 14 that transmits the rotational force from the torque detection clutch 22 to the rope winding drum 7, there is a reversing force that blocks the rotational force when the rope winding drum 7 is reversed from being transmitted to the torque detection clutch 22. A shutoff clutch 23 is provided. This clutch 23 has a female cone 24 which is arranged concentrically around the outer periphery of the transmission shaft 14 and is fixed to the driven side of the torque detection clutch, and a female cone 24 which is fitted concentrically to the outer periphery of the transmission shaft 14 and which is fixed to the driven side of the torque detection clutch. The main body is a male cone 25 which cannot rotate about the shaft 14 but is slidable in the axial direction. A part of the outer periphery of the male cone 25 is provided with an operating groove 2 in the circumferential direction.
6 is provided, and an intermediate portion of a clutch lever 27 is engaged with this operating groove 26. One end of the clutch lever 27 is pivotally supported by a fixed system, and the other end is connected to a second solenoid 28. The male cone 25 is normally urged away from the female cone 24 by a spring built into the second solenoid 28 .

A reverse rotation detector 29 is provided in the middle of the transmission shaft 14 adjacent to the small sprocket 19. This reverse rotation detector 29 includes a first disk 30 concentrically fixed to the outer periphery of the transmission shaft 14, a second disk 31 rotatably and concentrically fitted to the outer periphery of the transmission shaft 14, and this second disk 30, which is rotatably fitted to the outer periphery of the transmission shaft 14. Bakelite plates 32 and 33 are rotatably fitted concentrically to the outer periphery of the transmission shaft 14 so as to sandwich the disk 31 therebetween; Spring 3 biasing towards first disk 30
4, and a spring 3 screwed onto the transmission shaft 14.
4, an operator 36 protruding from the outer periphery of the second disc 31, and a stopper 37 (see FIG. ) and a switch 38 which is operated by an operator 36 when the transmission shaft 14 is reversed.

A reversing brake device 39 (shown in FIG. 3) is provided at the bottom of the rope winding drum 7. This brake device 39 includes a brake body 40 inserted between the lower part of the drum 7 and the installation base 1, a spring 41 that biases the brake body 40 in the direction in which the brake is applied, and an outer circumference of an opening/closing rope 42. a tension detection piece 43 made of an insulator fitted to the
A connecting wire 44 connects the tension detection piece 43 and the brake body 40 and pulls the brake body 40 so that no braking force is applied to the rope winding drum 7 when the opening/closing rope 42 is in tension. A guide roller 45 that guides the
It is composed of a guide arm 46 that guides the tension detection piece 43 as it moves up and down, and a rope guide 47 made of an insulator that guides the opening/closing rope 42 to maintain a required angle when it is tensioned.

In such a single rope bucket open rope operating device, the rotational force of the motor 2 is normally applied to the transmission shaft 4, the small sprocket 16, the chain 18, the large sprocket 17, the transmission shaft 14, and the small sprocket 1.
9, a chain 21, and a large sprocket 20 to be applied to the rope winding drum 7 so that the opening/closing rope 42 can be wound. Since a torque detection clutch 22 is interposed in the middle of the transmission shaft 14, when the opening/closing rope 42 is slack and no load is applied to the rope winding drum 7 due to its tension, it transmits rotational force to the rope winding drum 7. The opening/closing rope 42 is wound up. On the other hand, open rope 4
2 is tensioned and a load due to the tension is applied to the rope winding drum 7, the torque detection clutch 22 acts so as not to transmit rotational force to the rope winding drum 7. Therefore, the open rope 42
is normally kept taut without loosening.
Since the torque detection clutch 22 does not apply a large torque to the rope take-up drum 7, the opening/closing rope 42 is not taken up with a force that would open a single rope bucket.

When a single rope bucket is suddenly descended to grab something,
At the same time, the open rope 42 is pulled and rapidly unwound from the rope winding drum 7. At this time,
Since the rope winding drum 7 rapidly reverses, the second disc 31 of the reverse rotation detector 29 is reversed by the reverse force, and the switch 38 is pressed by the operator 36. This turns on the switch 38, energizes the second solenoid 28, pulls the clutch lever 27, disengages the reverse rotation cutoff clutch 23, and prevents reverse rotation force from being applied to the torque detection clutch 22. protect

When the single-rope bucket falls to the ground and stops, the release rope 42 becomes slack, and the tension detection piece 43 of the reversing brake device 39 descends, causing the spring 41 to drop.
The force overcomes and the brake body 40 enters under the collar of the rope winding drum 7 and applies a brake to the drum 7.

When the rope winding drum 7 stops reversing, the operator 36 of the reversal detector 29 no longer presses the switch 38, the switch 38 is turned off, the second solenoid 28 is demagnetized, the reversal cutoff clutch 23 is closed, and the torque is reduced. A small torque forward rotation force is applied to the rope winding drum 7 via the detection clutch 22.

(Effects of the invention) As explained above, according to the invention, the opening rope of a single rope bucket can be automatically operated by remote control using mechanical force. Particularly, according to the present invention, since a torque detection clutch is used, the release rope can be wound on the rope winding drum without being loosened, which may hinder the next operation. can be prevented. In addition, this torque detection clutch acts so as not to transmit rotational force when a load above a certain level is applied, so it is possible to prevent malfunctions such as unnecessary winding of the release rope and unnecessary release of the bucket. Furthermore, in this device, a reversing force cutoff clutch is interposed in the thread that transmits the rotational force from the torque detection clutch to the rope take-up drum, so that the rope take-up drum will not be affected by the sudden release of the rope when the bucket is lowered. It is possible to prevent a high-speed reversing force from being applied to the torque detection clutch, thereby protecting the torque detection clutch.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view schematically showing the mechanism of an embodiment of the device according to the present invention, Fig. 2 is a front view of a reversal detector used in this embodiment, and Fig. 3 is a front view of a reversal detector used in this embodiment. FIG. 3 is a front view of the reverse brake device. 1... Installation stand, 2... Geared motor, 3...
Output shaft, 4... Drive shaft, 6... Bearing, 7... Rope winding drum, 8... Rope winding control clutch, 9... Female cone, 10... Male cone, 1
1... Operating groove, 12... Clutch lever, 13...
...First solenoid, 14... Transmission shaft, 16...
Small sprocket, 17...Large sprocket, 18
...Chain, 19...Small sprocket, 20...
...Large sprocket, 21...Chain, 22...
Torque detection clutch, 23...Reverse force cutoff clutch, 24...Female cone, 25...Male cone,
26...Operation groove, 27...Clutch lever, 28
...Second solenoid, 29...Reverse rotation detector, 3
0...first disk, 31...second disk, 34...
... Spring, 36 ... Operator, 37 ... Stopper, 39 ... Reverse brake device, 42 ... Release rope.

Claims (1)

[Scope of utility model registration request] A rope winding drum that is loosely supported on the drive shaft and around which the end of the open rope of the single rope bucket is wound, a female cone attached to the rope winding drum, and a female cone that rotates integrally with the drive shaft. a rope winding control clutch that is slidable in the axial direction to be hooked onto and unlatched from the female cone and is normally disengaged; and a rope winding control clutch that transmits rotation of the drive shaft to the rope winding drum; an operating shaft that is connected by a chain or the like and transmits its rotation to the rope winding drum; and when the open rope provided on the operating shaft is slack and no load is applied to the rope winding drum due to its tension, the rope In addition to transmitting rotational force to the rope take-up drum, when the open rope is tensed and a load due to the tension is applied to the rope take-up drum, it idles and acts to prevent the rotation force from being transmitted to the rope take-up drum. A torque detection clutch, a female cone fixed to the driven side of the torque detection clutch, and a female cone that rotates together with the operating shaft and slides in the axial direction to engage and disengage from the female cone, and is normally connected to the female cone. a reversing force cutoff clutch comprising a latched male cone, and when the male cone is removed, the rotational force at the time of reversing the rope winding drum is not transmitted to the torque detection clutch;
a reversal detector that operates to remove the male cone from the female cone of the torque detection clutch by reversing the rope winding drum; and detecting slack in the open rope after landing on the bucket and stopping the rope winding drum from reversing. and a brake device that stops only the rotation in the reverse direction by activating the reverse rotation detector to re-latching the male cone of the torque detection clutch to the female cone. Operating device.