JPH078511Y2 - Cable drum support device for cable construction vehicles - Google Patents

Description

[Detailed Description of Device] a. Purpose of the Invention (Field of Industrial Use) The present invention provides a cable drum supporting device for rotatably supporting a cable drum around which a cable is wound, and for rotating and driving the cable drum to feed and wind the cable. Regarding the cable construction vehicle mounted on the top.

(Prior Art) A conventional cable construction vehicle, as shown in FIG.
A drum support arm that can be swung up by a swing cylinder 93
92 is arranged. This drum support arm 92
It has a shaft receiver 92a that rotatably supports both ends of a drum support shaft that is attached to the cable drum 95 penetrating its center. The shaft receiver 92a supports the drum support shaft to freely rotate the cable drum 95. To support. Further, the drum support arm 92 is provided with a drive device (not shown), which rotationally drives the drum support shaft and the cable drum 95 supported by the drum support shaft to feed the cable from the cable drum 95 and to the drum 95. The cable can be wound up.

To remove the cable drum 95 from the drum support arm 92, the swing cylinder 93 is extended to swing the drum support arm 92 to the rear side of the vehicle body as shown by the chain double-dashed line in FIG. The cable drum 95 is detached from the arm 92 and suspended by a suspending tool 94 suspended from the tip of the arm 92, and the cable drum 95 is lowered to the ground. The drum is installed in reverse.

(Problems to be solved by the invention) In the cable construction vehicle as described above, the cable drum supported by the drum support arm has various sizes depending on the thickness, length, type, etc. of the cable wound around the drum. There is one. Therefore, even if there is no problem when the large diameter cable drum 95 shown by the solid line in FIG. 6 is used,
When a cable drum 96 having a small diameter as shown by a chain line is used, when the cable drum 96 is detached, there arises a problem that it is difficult to lower it to the ground as it is because the length of the hanger 94 is insufficient as shown in the figure. Further, in the case of a small diameter cable drum 96, the problem that the hole diameter for passing the cable support shaft is small and this shaft diameter must be reduced,
Since the cable wound around the cable drum 96 is often thin, there is a problem that the cable may be damaged by applying the same driving force as in the case of a thick cable.

The present invention has been made in view of these problems, and provides a cable drum supporting device configured to support various sizes of cable drums and to easily attach and detach the drums. The purpose is to do.

B. Configuration of the Invention (Means for Solving the Problems) In order to achieve the above object, in a cable drum supporting device of the present invention, a drum supporting arm is for a large diameter drum that supports both ends of a drum supporting shaft for a large diameter drum. The shaft receiver and the shaft support for the small diameter drum, which is located on the base end side of the shaft support for the large diameter drum and supports both ends of the drum support shaft for the small diameter drum, are provided. The end of the drum support shaft supported by the receiver is set to a length that can be suspended and supported, and the end of the drum support shaft supported by the small diameter drum shaft receiver is suspended and supported at the lower end of this suspension. It is configured so that an auxiliary hanger of a possible length can be connected.

In this device, a detector for detecting which one of the shaft bearings supports the drum support shaft is provided, and when the drum support shaft is supported on the large diameter drum shaft receiver, the drum is supported on the small diameter drum shaft receiver. It is desirable to increase the driving force of the drum driving means more than when the supporting shaft is supported.

Further, in the above apparatus, the drum driving means is attached to a drive gear attached to the drum support arm, and a driven gear which is attached to the drum support shaft and meshes with the drive gear when the shaft is supported by either of the shaft receivers. The drum supporting arm may be provided with braking means for braking the rotation of the driven gear.

(Operation) When the cable drum supporting device having the above-mentioned configuration is used,
The drum support shaft supporting the large diameter drum is supported by the large diameter drum shaft receiver, and the drum supporting shaft supporting the small diameter drum is supported by the small diameter drum shaft receiver. Furthermore, since the drum support shaft supporting the large-diameter drum is suspended by the shaft suspender having a length corresponding to the state of being supported by the large-diameter drum shaft receiver,
The large-diameter drum can be easily attached and detached according to the swing of the shaft support arm. On the other hand, by connecting the auxiliary suspending device to the shaft suspending device, the length corresponding to the state of being supported by the shaft receiver for the small diameter drum is obtained, and the drum supporting shaft supporting the small diameter drum is suspended by this suspending device. Also in this case, the small diameter drum can be easily attached and detached according to the swing of the shaft support arm.

In addition, if the driving force of the drum driving means is set according to the detection of the detector, it is possible to set an appropriate winding force corresponding to each drum, that is, corresponding to the cable wound around each drum. It can be carried out.

(Embodiment) Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.

A cable construction vehicle having a cable drum supporting device according to the present invention is shown in FIGS. 1 and 2. A drum support arm 2 that is swingable around a base end 2a is mounted on a vehicle body 1 of this cable construction vehicle. As shown in detail in FIG. 3, the drum support arm 2 includes brackets 3a, 3a having pivot portions 2a pivotally attached to the vehicle body 1, and brackets 3a, 3a fixed in the vehicle width direction. And a pair of branch arms 4,5 fixed to both ends of the tube member 3 and extending at right angles to the tube member 3. It swings back and forth around 2a.

The large-diameter drum shaft receivers 11 and 11 face each other at the intermediate portions on the longitudinal axis on the inner surfaces of the branch arms 4 and 5.
Further, small-diameter drum shaft receivers 12 and 12 are fixed to the shaft receivers 11 and 11 at positions proximal to the shaft receivers 11 and 11 and offset rearward from the longitudinal axis. A predetermined drum support shaft can be rotatably supported on the shaft receivers 11, 11 or 12, 12. In the cable construction vehicle of this example, a large-diameter drum support shaft 20, a medium-diameter drum support shaft 120, and a small-diameter drum support shaft 220 are used, and in FIG. 1, FIG. 2, and FIG. 20 shows the state of being supported by the large-diameter drum shaft receivers 11, 11.
However, in FIG. 3, the large diameter drum 71 is removed. The medium diameter drum support shaft 120 and the small diameter drum support shaft 220 are stored at predetermined positions on the vehicle body 1 as shown in FIG. The medium diameter drum support shaft 120 is supported by the large diameter drum shaft receivers 11, 11 and the small diameter drum support shaft 220 is supported by the small diameter drum shaft receivers 12, 12.

The large-diameter drum support shaft 20 has two side end portions 23a, 23
b has bearings and the like, shaft receiver for large diameter drum 11,
11 is rotatably supported. As shown in FIG. 4, the shaft receiver 11 is formed in a U shape with one side open, and the end 23a can be freely inserted and removed from the open side.
The drum support shaft 20 is removable from the shaft receiver 11. The small-diameter drum shaft receivers 12 and 12 have the same structure.

However, since the drum support shaft 20 may be disengaged from the shaft receiver 11 if it is left as it is, a lock mechanism 40 for locking and holding the shaft support shaft 20 is provided in each of the branch arm portions 4 and 5. This locking mechanism 40 is provided for the shaft receivers 11 and 12
Lock pins 41 and 42 inserted to close the open side of
And a lock operating lever 44 for inserting and removing the lock pins 41, 42, and a connecting rod 43 for connecting the lock pins 41, 42 and the operating lever 44. Lock operation lever
When 44 is lowered as shown by the chain line, both lock pins 41 and 42 are pulled out from both shaft receivers 11 and 12, the open side is opened, and the drum support shaft 20, 120 or 220 can be attached and detached, and the lock operation lever When 44 is raised as shown by the solid line, the lock pins 41, 42 close the open sides of the shaft receivers 11, 12 and can hold the drum supporting shaft 20, 120 or 220 in a locked state.

The drum support shaft 20, as shown in detail in FIG.
The shaft portion 21 that is inserted through the central through hole of the large-diameter cable drum 71, and is attached to the outer periphery of the shaft portion 21,
Holding collars 22a and 22b that hold the drum 71 from both sides and hold it at a predetermined position on the shaft portion 21, and a connecting arm 25 that is fixed to the right holding collar 22b and extends in the radial direction and can be connected to the side surface of the drum 71. , And a driven gear 24 fixed to the shaft portion 21 on the outer side (right side) of the right holding collar 22b. The other drum support shafts 120 and 220 have the same configuration, and the shaft portions 121 and 221 and the driven gear 1 are respectively provided.
24, 224, coupling arms 125, 225, etc.

On the other hand, a drive shaft 54 is rotatably attached to the right arm member 5, and a drive gear 55 is axially attached to an end portion projecting inward of the drive shaft 54. With the drum support shaft 20 supported by the shaft receivers 11, 11, the driven gear 24 attached to the shaft 20 meshes with the drive gear 55. A driven pulley 53 is attached to the outer end of the drive shaft 54, and the driven pulley 53 is a belt.
The drive pulley 51 of the hydraulic motor 50 is connected by 52.
In this way, the drum driving means is configured, and by driving the hydraulic motor 50, the drum supporting shaft 20 and the large-diameter drum 71 supported by the drum supporting shaft 20 are rotationally driven, and the feeding of the cable 71a from the drum 71 and Drum 71
The cable 71a can be wound around.

The drive gear 55 is slidable in the axial direction on the drive shaft 54, and the drive gear 55 can be slid left and right by operating the clutch lever 56 attached to the right arm portion 5 left and right. (This mechanism is a dog clutch mechanism that is well known in vehicle transmissions, and the structural description thereof is omitted). Therefore, by operating the clutch lever 56, the drive gear 55 can be slid to disengage from the driven gear 24 and the drum 71 can be freed.

As a result, the cable 71a can be paid out freely from the drum 71, but in order to prevent the drum 71 from self-propelled during this free payout, the brake mechanism 60 shown in FIG. 5 is provided. This brake mechanism 60
It is a disc brake that brakes the rotation of the driven gear 24,
A bracket 61 fixed to the right arm portion 5 has two shoes 63 and 64 pivotally supported by a support shaft 65. This shoe 6
Both threads of the rod 62, which can be freely rotated by the handle 63, are screwed into 3, 64, and the shoe 63, 6 can be rotated by rotating the handle 63.
4 move closer to or farther from each other. Pads 63a and 64a are attached to the inside of the tips of the shoes 63 and 64, and the side surface of the driven gear 24 is sandwiched between the pads 63a and 64a by the operation of the handle 63 to rotate the driven gear 24 and thus the drum 71.
You can brake the rotation of.

Although the case where the large-diameter drum support shaft 20 is used has been described above, the medium-diameter drum support shaft 120 is used in exactly the same manner as the large-diameter drum support shaft 20. Also, the small diameter drum support shaft 220 is
It is supported by the small-diameter drum shaft receivers 12 and 12 while supporting 2. At this time, the driven gear 224 attached to the shaft 220 meshes with the drive gear 55. However, in this case, since the brake mechanism 60 shown in FIG. 5 cannot be used, a brake mechanism 160 having the same configuration as the brake mechanism 60 is provided at the position of the driven gear 224. When using the small diameter drum 72,
It is configured such that the brake mechanism 160 can be operated by operating 163.

Further, each of the shaft receivers 11 and 12 is provided with a sensor 47, 48 for detecting whether or not the support shaft is supported by the shaft receiver. Therefore, it is possible to detect which of the shaft receivers 11 or 12 supports the support shaft, and the driving force of the hydraulic motor 50 is adjusted according to the detection. Specifically, when it is detected by the sensor 47 that the large-diameter drum shaft receiver 11 supports the large-diameter drum supporting shaft 20 or the medium-diameter drum supporting shaft 120, the small-diameter drum shaft receiving member 12 receives the small-diameter drum supporting shaft 220. Supported that the sensor 48
The driving force of the hydraulic motor 50 is made larger than that detected by. Thereby, an appropriate driving force is set according to the cable strength of each drum.

Installation and removal of the drums 71 and 72 in the apparatus configured as described above will be described. The attachment and the detachment are performed by extending the swing cylinder 6 and swinging the drum support arm 2 backward, as shown by the chain line in FIG.

Therefore, the suspenders 30 are respectively hung from the boss portions 4a and 4b at the tips of the arm portions 4 and 5. The suspending tool 30 includes a chain 31 having one end connected to the boss portions 4a and 5a, and a holding plate 32 connected to the other end of the chain 31. The holding plate 32 includes a large or medium diameter drum support shaft.
An insertion hole 32a for inserting the ends of 20,120 is formed, and a mounting hole 3b for mounting the auxiliary suspending tool 35 is formed in the lower portion of the insertion hole 32a.

First, when attaching the large diameter drum 71, use the auxiliary
35 is removed, and the rocking cylinder 6 is extended to rock the drum support arm 2 rearward as shown by the chain line in FIG. At this time, the hanger 30 is hung downward. on the other hand,
In the large diameter drum 71 to be attached, the drum support shaft 20 is previously inserted into the center through hole and attached. Then, the holding plate 32 of the suspended hanging device 30
The end portion 23a of the drum support shaft 20 is inserted into the insertion hole 32a.

After that, if the swing cylinder 6 is contracted and the shaft support arm 2 is erected, the large diameter drum 71 can be lifted while the shaft 20 is supported by the lifting tool 30. Here, the insertion hole 32a of the holding plate 32 corresponds to the position of the large-diameter drum shaft receivers 11, 11, and when the arm 2 is upright, the end 23a of the drum support shaft 20 is inside the shaft receiver 11. Get in. Therefore, when the lock pin 41 is inserted by the lock mechanism 40 to lock and hold the shaft 20, the attachment of the drum 71 is completed. The removal of the drum 71 may be performed by the reverse operation.

Since the attachment and detachment of the medium diameter drum are exactly the same as above, the explanation is omitted.

In the case of the small-diameter drum 72, as shown in FIG. 4, an auxiliary suspending tool 35 is attached to the insertion hole 32a of the holding plate 32.
The auxiliary hanger 35 includes a hook 36 that is locked in the insertion hole 32a, a chain 37 that extends from the hook 36, and a holding plate 38 that is connected to the lower end of the chain 37.
An insertion hole 38a for inserting and supporting the end portion 223a of the small diameter drum support shaft 220 is formed in the 38.

Even when the small diameter drum 72 is attached, the swing cylinder 6 is extended to swing the drum support arm 2 rearward, as shown by the chain line in FIG. At this time, the hanger 30 and the auxiliary hanger 35 are hung downward. In the case of the small-diameter drum 72, since the drum outer diameter is small, when the small-diameter drum 72 is placed on the ground, the position of the drum support shaft 220 inserted and attached to the center through hole of the small-diameter drum 72 is the case of the large-diameter drum 71. Will be lower. However, the hanging position of the holding plate 38 of the auxiliary lifting device 35 is also low, and the end portion 223a of the drum support shaft 220 can be inserted into the insertion hole 38a of the holding plate 38 in this state.

After that, the swing cylinder 6 is contracted to raise the support arm 2 and the small diameter drum 72 is lifted. At this time, hanging equipment
Holding plate for auxiliary sling 35 while attached to 30
The insertion hole 38a of 38 corresponds to the position of the shaft receivers 12, 12 for the small diameter drum, and the end portion 223a of the drum support shaft 220 enters into the shaft receiver 12 when the arm 2 is upright. Therefore, the lock mechanism 40 inserts the lock pin 42 to hold the shaft 220 in a locked state, whereby the attachment of the drum 72 is completed.

As mentioned above, the shaft receivers 12, 12 for small diameter drums
Is disposed offset from the longitudinal axis of the branch arms 4 and 5 toward the rear of the vehicle body, so that it is possible to prevent the auxiliary suspending tool 35 from interfering with the drive gear 55 when the small diameter drum 72 is attached.

In the above, the case of using three types of drums of large diameter, medium diameter and small diameter has been described.
The same applies to the case where only four kinds of drums are used and the case where four or more kinds of drums are used.

C. As described above, according to the present invention, the drum support shaft supporting the large diameter drum (or the medium diameter drum) is supported by the large diameter drum shaft receiver, and the drum supporting shaft supporting the small diameter drum is It is supported by the shaft receiver for small diameter drums. Furthermore, since the drum support shaft that supports the large-diameter drum is suspended by the shaft suspender having the length corresponding to the state of being supported by the shaft receiver for the large-diameter drum, the large-diameter drum support shaft can be rotated in accordance with the swing of the shaft support arm. Easy installation and removal of the drum. On the other hand, by connecting the auxiliary suspending device to the shaft suspending device, the length corresponding to the state of being supported by the shaft receiver for the small diameter drum is obtained, and the drum supporting shaft supporting the small diameter drum is suspended by this suspending device. , Also in this case, the small diameter drum is attached according to the swing of the shaft support arm,
It can be easily removed.

A detector for detecting whether the drum support shaft is supported on the large-diameter drum shaft support or the small-diameter drum shaft support is provided, and when the large-diameter drum shaft support supports the small-diameter drum shaft support, If the driving force of the drum driving means is set to be larger than that when the drum support shaft is supported, the appropriate winding force is set for each drum, that is, for the cable wound around each drum. be able to.

Further, the drum drive means is composed of a drive gear attached to the drum support arm and a driven gear attached to the drum support shaft and meshing with the drive gear when the shaft is supported by either of the shaft receivers. If the drum support arm is provided with a braking means for braking the rotation of the driven gear, the cable wound around the drum can be freely paid out and the self-propelled movement can be prevented during the free payout.

[Brief description of drawings]

1 and 2 are a plan view and a front view showing a cable construction vehicle having a cable drum supporting device according to the present invention, and FIG. 3 is a front view of the cable drum supporting device as seen from the rear of the vehicle body. Figures 5 and 5 show arrows IV-IV and V-V in Figure 3.
FIG. 6 is a schematic view showing a conventional cable construction vehicle. 2 ... Support arm, 6 ... Oscillating cylinder 11, 12 ... Shaft receiving 20, 120, 220 ... Drum support shaft 30 ... Lifting tool, 35 ... Auxiliary lifting tool 40 ... Lock mechanism, 50 ... Hydraulic motor 55 ... Drive gear, 71, 72 ... Drum

Claims (3)

[Scope of utility model registration request] 1. A drum support shaft mounted on a cable drum, and two branch arm portions swingably installed on a vehicle body and detachably and rotatably supporting both ends of the drum support shaft. A drum support arm, a shaft suspender that hangs from each of the two branch arm portions and can suspend and support the end of the drum support shaft, and the drum support shaft supported by the drum support arm is rotated. A cable drum supporting device for a cable construction vehicle, comprising: a drum driving means for driving the drum supporting shaft, wherein at least two types of the drum supporting shaft are set corresponding to the size of the drum, and the branch arm portions face each other. And a pair of large-diameter drum shafts supporting both ends of the drum support shaft set for large-diameter drums. A pair of small-diameter drums, each of which is provided with a receiver and is located on the proximal end side of the large-diameter drum shaft receiver in the branch arm portion so as to face each other and supports both ends of the drum support shaft set for the small-diameter drum. Shaft receiver is provided, and the shaft suspender is set to a length capable of suspending and supporting the end portion of the drum support shaft supported by the large diameter drum shaft receiver, and at the lower end of the suspender. A cable drum supporting device for a cable construction vehicle, to which an auxiliary suspending tool having a length capable of suspending and supporting the end portion of the drum supporting shaft supported by the small diameter drum shaft receiver can be connected. . 2. A detector for detecting which of the large-diameter drum shaft receiver and the small-diameter drum shaft receiver supports the drum support shaft, the large-diameter drum shaft receiver having the detector. The cable construction according to claim 1, wherein when the shaft is supported, the driving force of the drum driving means is set to be larger than when the drum support shaft is supported by the shaft receiver for the small diameter drum. Car cable drum support device. 3. A drive gear attached to the drum support arm, and the drum support shaft attached to the drum support shaft, wherein the drum drive means attaches the drum support shaft to the large-diameter drum shaft receiver and the small-diameter drum shaft receiver. And a driven gear that meshes with the drive gear when supported by any one of the above, and the drum support arm is provided with braking means for braking the rotation of the driven gear. A cable drum support device for a cable construction vehicle according to claim 1 or 2.