JPS6044235B2 - Cable automatic carriage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to automatic cable carriage.

Conventionally, there are the following types of cable automatic carriages (wood collection hoisting carriages) that have a built-in hoisting cable drum for moving up and down the felled timber from forests.

Double Endless Carriage This carriage has a simple structure as it uses a total of four endless cables, one for driving the hoisting cable drum and one for running the carriage. However, it takes days to construct the endless rope, the width of the tree to be cut is wide, the resistance of the rope is large, the power required and the cable wear out are high, and if either endless rope breaks, the cargo may fall and cause an accident. There was a risk of inducing

Air-controlled single endless carriage This carriage requires a complicated control device, so although the installation is simple, the cost of the product is high and maintenance, damage, and repairs are troublesome. Another type of hoisting carriage with a single endless rope is a carriage equipped with an endless rope tension control system, in which when the endless rope is loosened, the brakes on the main rope and carriage are released, and the brake on the endless rope drum is activated. There are two types of structure, and one structure where when the endless rope is tensioned, the brakes on the main rope and carriage are released and the brakes on the endless rope drum are activated. The brakes on the main rope and carriage must be activated by loosening the rope, so the carriage will move and stop by the amount of movement caused by tightening and loosening the endless rope.
Therefore, there was a drawback that the carriage could not be accurately stopped at a desired position. Furthermore, if the endless cord is cut, in the former case, the endless cord. The brakes on the drum remain applied, but the brakes on the main rope and carriage do not, leading to a gunshot accident in which the carriage moves along the main rope, and in the latter case the brakes on the endless line drum are released. The main rope and carriage were shaken. Since the keys were activated, no gunshot accidents would occur in the carriage, but the hoisting cable drum linked to the endless cable drum would become free and the cargo would fall, posing a risk of personal injury. An object of the present invention is to eliminate the above-mentioned conventional defects, simplify the structure, save labor for the cables, reduce the required power and wear and tear of the cables, and furthermore enable the cables to be placed at desired positions. To provide a cable automatic carriage that can accurately stop, prevent accidents due to cutting of the moving cable, facilitate cable tensioning, and reduce wear and tear on the moving cable.

An embodiment embodying the present invention will be described below with reference to the drawings.

First, the outline of the present invention will be described with reference to FIG. 2,
2, it is suspended so that it can run.

An endless rope K2 is stretched between the trees Tl and T2 so as to be reciprocally movable by an endless rope drum D1 of a winch W, and a part of the endless rope K2 is connected to the carriage 1.
When the endless rope K2 is wound around the endless rope drum 3 equipped with a brake, and the endless rope K2 is reciprocated with the seventh brake activated and the endless rope drum 3 fixed to the endless rope K2, A carriage 1 is configured to travel back and forth along a main rope K1.ノ Also, tree T
Between l and T2 is a carriage 1 whose one end is wrapped around the stop cable drum D2 of the winch w and whose tip is fixed to the ground.
A stop cable K3 is stretched, and a part of the stop cable K3 is wound around a brake-equipped stop cable drum 4 installed in the carriage 1.

Then, when the stop rope drum D2 is rotated to tension the stop rope K3, the brake of the stop rope drum 4 is activated by the brake switching mechanism described later, and the carriage 1 is fixed to the stop rope K3 and stopped. , the brake on the endless rope drum 3 is released and the endless rope K2 and the carriage 1 are unfixed, and as a result, even if the endless rope K2 is reciprocated, the carriage 1 does not travel, and the hoisting rope K4 is driven. It is configured so that cargo can be lifted and lowered. To explain the structure of the automatic carriage 1 in detail, a beam 6 is fixed to the right end of a pair of frames 5, 5 made of flat copper plates, as shown in FIGS.

The running wheels 2, 2 are supported via support links 8, 8, respectively, on pins 7 which are inserted through and locked into the upper right end of the beam 6 and the upper left end of the frames 5, 5, respectively. As shown in FIG. 4, a support shaft 9 is inserted and fixed into approximately the center of the frames 5, 5, and the endless rope drum 3 and the stop rope drum are connected to the support shaft 9 via a pair of bearings 10. 4 are each rotatably supported.

The endless rope K2 that has passed from the endless rope drum D1 of the winch W through the tree T1 passes through the upper side of the guide pulley 11 supported on the pin 7 to the endless rope drum 3, as shown in FIGS. After being wound around the drum 3 several times from the upper side, it is also led out from the upper side of the drum 3, and guided to the tree T2 through the upper side of the guide pulley 13 supported by a pin 12 on the upper right side of the frames 5, 5. It's dark. As shown in FIG. 3, a hoisting cable drum 15 for driving the hoisting cable K4 is rotatably supported on a support shaft 14 inserted and fixed near the left end of the frames 5, 5.

As shown in FIGS. 3 and 4, a driving gear 16 is fixed to one side of the endless cable drum 3, and a driven gear 17 that meshes with this driving gear is fixed to one side of the hoisting cable drum 15. ing. Hoisting cable K4 wound around the hoisting cable drum 15
is suspended downward by a guide pulley 18 supported at the tip of the beam 6 and a guide pulley 19 suspended below the beam 6, and a hook 20 is fixed to the lower end thereof. Third
As shown in FIG.
2 is attached.

A pulley 23 for guiding the stop rope K3 of the carriage 1 is supported between the distal ends of the tension sensing lever 22. The stop rope K3, which has passed from the stop rope drum D2 of the winch W through the tree T1 and above the pulley 23, enters the stop rope drum 4 from below several times as shown in FIGS. After being wound, the tree T2 is also passed from the bottom side of the drum 4 through the top side of the guide pulley 24 supported by the pin 12.
being led to the side. Next, among the pair of brakes of the same structure built into the endless rope drum 3 and the stop rope drum 4, the brake on the endless rope drum 3 side will be explained with reference to FIGS. 4 and 5. Two support pins 25, 25 each are tightened and fixed.
have an endless rope drum 3 and a stop rope drum 4, respectively.
Operating members 27 and 28 are rotatably supported to which arc-shaped brake shoes 26 and 26, which are pressed into contact with the inner peripheral surfaces 3a and 4a, are fixed.

Note that a spacing plate 29 is connected to the support pins 25, 25. The upper end of an interlocking link 30 is articulated with a pin 31 to the upper end of the operating member 27, and an interlocking link provided with a turnbuckle 32a is connected to the intermediate portion of the interlocking link 30 and the upper end of the operating member 28. 32 are articulated by pins 33.

An operating lever 35 is fixed to the inner end of an operating shaft 34 that is rotatably inserted and supported at a fixed position in the frame 5 . Further, an interlocking link 36 is articulated by a pin 37 between the lower end portions of the operating lever 35 and the interlocking link 30. As shown in the upper part of FIG.
A coiled tension spring 40 is hung between the locking pin 39 and the locking pin 39 which is inserted through and fixed to the upper end of the spring 7 .

Further, in order to lock the locking pin 39, an adjuster bolt 41 is tightened at a fixed position of the frame 5 with a nut 42 so that its rotational position can be adjusted as shown on the side of the stop cable drum 4 in FIG. Fixed. An eccentric cam 43 is integrally formed at the inner end of the bolt 41, and the eccentric cam 43 can lock the locking pin 39 in the brake release position. Therefore, as shown in FIG. 5, in a braking state in which the brake shoe 26 is in pressure contact with the inner circumferential surface 3a of the endless cable drum 3, when the operating shaft 34 is rotated in the direction of the arrow in the figure, it is interlocked with the operating lever 35. The interlocking link 30 is rotated about the pin 31 in the direction of the arrow via the link 36 .

Then, the actuating members 27 and 28 are rotated about the support pin 25 in a direction toward each other by the tensile force of the interlocking link 32 and the tension spring 40, so that the brake shoes 26 and 2
6 moves away from the inner circumferential surface 3a of the drum 3, and the braking is released. Next, by rotating the stop rope drum D2 of the winch W and increasing the tension of the stop rope K3, the operating shafts 34, 34 of the brakes of the endless rope drum 3 and the stop rope drum 4 are rotated. A brake switching mechanism that is capable of releasing the brake of the endless cable drum 3 in the braking state and applying the brake of the stopping cable drum 4 in the released state will be explained with reference to FIGS. 6 to 8.

As shown in FIG. 8, a rotating shaft 44 is inserted and supported near the right end of the frames 5, 5, and an operating lever 45 is fixed to the right end thereof.

An interlocking link 47 is connected by a pin 48 to the operating lever 45 and the operating lever 46 fixed to the shaft tube 21 at the left end of the frames 5,5. A support plate 49 is connected and fixed to the inner surfaces of the frames 5, 5, as shown in FIG.

As shown in FIG. 6, a rod 51 is inserted through the bearing sleeve 50 fixed to the support plate 49 so as to be reciprocating. A stopper 52 is screwed to the right end of the rod 51, and a spring seat 53 is fixed to the left side of the rod 51. Between the spring seat 53 and the support plate 49, there are two coil-shaped tensioning devices. A spring 54 is interposed, and the rod 51 is always biased to the left in FIG. At approximately the center of the rotation shaft 44, an eighth
Sleeve 5 is fitted and secured via a key as shown in the figure.
A tension applying lever 56 is fixed to one end of the tension applying lever 5.
An interlocking link 57 is articulated between this lever 56 and the stopper 52 by a pin 58. Therefore, the tensile force of the rod 51 pushed leftward in FIG.
The tension is transmitted to the lever 56 via the lever 5.
6 in the clockwise direction is transmitted to the operating lever 46 via the operating lever 45 of the rotating shaft 4 and the interlocking link 47, and furthermore, the clockwise rotating force of this lever 46 is transmitted to the operating lever 46 via the operating lever 45 of the rotating shaft 4 and the interlocking link 47. The tension is transmitted to the tension sensing lever 22 via the tension sensing lever 22.

As a result, the pulley 23 is urged by the lever 22 to rotate clockwise in FIG. . As shown in FIG. 7, operating levers 59 and 60 are fixed to the left end protrusion of the rotating shaft 44 and the right end of the sleeve 55, respectively. V-shaped levers 63, 63 are attached to the sides of the frames 5, 5 via fixed support shafts 61, 62 so as to correspond to the operating levers 59, 60.
64 is supported. Interlocking links 65 and 66 are connected by pins 67 between the operating levers 59 and 60 and the V-shaped levers 63 and 64, respectively. As shown in FIG. 3, cylinders 68 and 69 are fixed to the side surfaces of the frames 5 and 5, respectively.
, 69 includes a rod 72 which is biased toward the left in FIG. 6 by two coiled brake springs 70 and a spring seat 71.
73 is penetrated.

Operation levers 74 and 75 are fixed to the outer ends of the brake operation shafts 34 and 34, respectively.

Toggle links 76 and 77 are provided between pins 78 and 77 between the operating levers 74 and 75 and the rods 72 and 73, respectively.
It is articulated by 9. Furthermore, the toggle link 7
Pushing rods 80, 81 are articulated between the central portions of the levers 6, 77 and the ■-shaped levers 63, 64 by pins 82, 83, respectively. By the way, in this embodiment, when a certain tension is applied to the stop cable K3 by the tension applying spring 54 as shown in FIG. 6, the operating lever 59, the interlocking link 65, the V-shaped lever 63 The toggle link 76 is pulled up to a horizontal position by the push rod 80, and the operating lever 74 is thereby rotated counterclockwise in FIG. 6 about the operating shaft 34, thereby operating the brake of the endless cable drum 3. Thus, the carriage 1 is fixed to the endless cable K2.

On the contrary, a toggle link 77 that interlocks with the operating lever 60, the interlocking link 66, the V-shaped lever 64, and the push rod 81
is pushed down in a V-shape, and as a result, the operating lever 75 is rotated clockwise in FIG.
3 so that the carriage 1 is not restrained. In this embodiment, there is provided a tension sensing lever 22 that senses the tension of the stop rope K3 rotatably supported on the frames 5, 5 of the carriage 1, and a tension sensing lever 22 that is supported by the lever 22 and that guides the stop rope K3. The pulley 23 constitutes a tension sensing mechanism.

Also, an actuation lever 46 connected to the tension sensing lever 22
, an operating lever 45 fixed to a rotating shaft 44 supported on the frames 5, 5, an interlocking link 47 connected to both the levers 46, 45, and a tension applying lever 56 connected to the rotating shaft 44. , and a tension applying spring 54 that applies tension to the tension applying lever 56, constitute a tension applying mechanism for applying a constant tension to the stop rope K3. Further, an actuation lever 59 attached to the rotation shaft 44
, 60, a pair of interlocking links 65, 66 connected to the same levers 59, 60, V-shaped levers 63, 64 rotated by the same links 65, 66, and the endless rope drum by the same levers 63, 64. The brake 3 and the toggle links 76 and 77 that switch the brake operation shafts 34 and 34 of the stop rope drum 4 constitute a link mechanism that alternately switches the brake on and off. ing. Next, the operation of the cable automatic gearage constructed as described above will be explained.

Now, FIGS. 2 and 6 show a state in which the tension of the stop rope K3 is kept constant by its own weight and the tension imparting spring 54, the brake of the endless rope drum 3 is activated, and the brake of the stop rope drum 4 is released. It does not show.

In this state, the endless rope drum D of the winch W
When the carriage 1 is rotated and the endless cable K2 is reciprocated, the endless cable drum 3 is braked, so the carriage 1 is reciprocated. At this time, the stop cable drum 4 is idled as the carriage 1 moves. When the carriage 1 is moved to a predetermined material collecting position, the endless rope drum D1 of the winch W is stopped, the endless rope K2 is stopped, and the stop rope drum D2 of the winch W is rotated to wind up the stop rope K3. Since the tip of the stop rope K3 is fixed to the ground, the tension of the stop rope K3 gradually increases.

Then, this stop rope K3 pushes down the pulley 23, so
The tension sensing lever 22 is rotated counterclockwise in FIG. 6 about the support shaft 14. Therefore, the actuation lever 46 is rotated in the same direction, and this rotation is transmitted to the actuation levers 59 and 60 via the interlocking link 47, the actuation lever 45, and the rotation shaft 44, and the rotation of the levers 59 and 60 is further transmitted. is transmitted to the V-shaped levers 63 and 64 via the interlocking links 65 and 66, one of the V-shaped levers 63 moves the push rod 80 and the toggle link 76 downward, and the other V-shaped lever 6
4, the push rod 81 and toggle link 77 are pulled up. As a result, the brake operating shaft 34 and operating lever 74 of the endless cable drum 3 are rotated clockwise in FIG. 6 to release the brake, and the brake operating shaft 34 and operating lever 75 of the stop cable drum 4 are The brake is activated by being rotated counterclockwise in the figure, and therefore,
Carriage 1 is fixed to stop cable K3, and carriage 1
will be stopped. When the brakes of the endless rope drum 3 and the stop rope drum 4 are switched, if the brake of the endless rope drum 3 is released before the brake of the stop rope drum 4 is activated, the carriage 1 becomes free. To prevent this, the toggle link 7 is set so that the brake of the stop rope drum 4 is activated and then the brake of the endless rope drum 3 is released.
Link mechanisms such as 6, 77 and operating levers 74, 75 are designed.

When the carriage 1 is stopped, the brake of the endless cable drum 3 is released as described above, so when the endless cable drum D1 of the winch W is rotated again to rotate the endless cable K2, the carriage 1 is stopped. The endless cable drum 3 is rotated as it is, and the hoisting cable drum 15 is thereby rotated via the driving gear 16 and the driven gear 17.
is rotated, and the hoisting cable K4 is lowered while being unwound.

When the hoisting cable K4 has lowered to the specified position, the endless cable K4
2, the hoisting cable K4 is stopped, and the felled timber is hooked onto the hook 20. After that, the endless rope K2 is reversed again to wind up the hoisting rope K4, and when the felled timber rises to a predetermined position,
The endless cable K2 is stopped again, and the hoisting cable K4 is stopped. Next, when the stop cable drum D2 of the winch W is reversed and the stop cable K3 is wound back to release its tension, the tension sensing lever 22 is returned from the state shown in FIG. 7 to the position shown in FIG. As a result, the brake of the endless rope drum 3, which had been released, was activated due to an action completely opposite to that described above.
The brake of the stop rope drum 4 that has been activated is released.

Therefore, when the endless cable drum D1 of the winch W is rotated, the carriage 1 is driven again and the felled timber is moved to the desired timber collection position. Now, in the present invention, in addition to the endless rope drum 3 on which the endless rope K2 is wound around the carriage 1, the stop rope drum 4 on which the stop rope K3 is wound
is attached to the carriage 1 so as to be rotatable and fixable by a brake, and the carriage 1 is
and a tension sensing mechanism interposed between the stop rope K3 and the tension sensing mechanism for sensing the tension of the stop rope K3, a tension applying mechanism for applying a constant tension to the stop rope K3, and a tension sensing mechanism for applying a constant tension to the stop rope K3; A brake switching mechanism consisting of a link mechanism for alternately switching the brake on and off when the tension sensing mechanism operates is installed, which eliminates the need for conventional automatic systems that use a complex brake control device. Compared to a carriage, the structure can be simplified, and maintenance, inspection, and repair can be easily performed.

Further, in the present invention, the brake of the endless rope drum 3 is released by tensioning the stop rope K3, and the brake of the endless rope drum 4 is released.
Since the brakes are activated, the carriage 1 can be accurately stopped at a desired position by the stop rope K3, and the carriage 1 can be accurately stopped at a desired position by the stop rope K3, and the carriage 1 can be stopped at a desired position by the stop rope K3, and the carriage 1 can be stopped at a desired position by the stop rope K3. This is very convenient when transporting items.

In addition, in the embodiment of the present invention, the endless rope K2 and the stop rope K3
Since two types of cables are used, if either cable K2 or K3 breaks, carriage 1 can be stopped by operating the remaining cable, which improves work safety. can be improved. Note that the probability that both cords K2 and K3 are cut at the same time is close to zero. Furthermore, in the present invention, although the endless cable K2 and the stop cable K3 are used, no external force other than the minimum tension required to run the carriage 1 is applied to the endless cable K2, and while the carriage 1 is running, Since the stop cable K3 is loosened and kept at the lowest tension, it is possible to reduce the amount of wear and tear on the endless cable K2 and the stop cable K3, as well as to reduce the required power, compared to a carriage that uses double endless cables. It's coming.

Furthermore, in the present invention, the number of cables is reduced by one compared to a carriage that uses double endless cables, so that cable tensioning can be easily carried out.

As described in detail above, the present invention provides a main rope K with fixed locking at both ends.
An endless rope K2 driven by an endless rope drum D1 of a winch W is connected to a carriage 1 suspended on a carriage 1.
The endless rope drum 3 for winding the rope can be rotated.
The endless rope drum 3 is connected to a hoisting rope drum 15 for driving the hoisting rope K4, and the base end is connected to the stop rope drum D2 of the winch W. A stop rope drum 4 for winding a stop rope K3 whose tip is fixedly locked is installed rotatably relative to the carriage 1 and fixable by a brake, and is further rotatable relative to the carriage 1. To,
and a tension sensing mechanism interposed between the carriage 1 and the stop rope K3 to sense the tension of the stop rope K3, and a tension sensing mechanism that applies a constant tension to the stop rope K3. and a link mechanism for alternately switching between on and off states of the brake when the tension sensing mechanism is operated due to the tension of the stop rope K3. This has the following effects.

That is, the structure can be simplified, and the carriage 1 can be accurately stopped at a desired position.
Furthermore, work safety is improved, the endless rope K2 and the stop rope K3 can be easily erected, and the ropes K2, K3 can be easily erected.
This has the effect of reducing the amount of consumption of 3.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view showing the cable automatic carriage of the present invention installed, Fig. 2 is a front view of the carriage, Fig. 3 is a plan view of the carriage, and Fig. 4 shows an endless cable drum and a stop cable. A sectional view of the drum, FIG. 5 is a front view showing the brakes of the endless rope drum and the stop rope drum, and FIGS. 6 and 7 show the brake switching mechanism, respectively, when the stop rope is loose.
FIG. 8 is a front view in the emergency state and a sectional view showing the vicinity of the rotation axis of the brake switching mechanism. Automatic carriage 1, endless rope drum 3, stop rope drum and upper rope drum 15, tension sensing lever 22, pulley 23
, endless rope K2, stop rope K3.

Claims (1)

[Claims] 1. An endless rope drum 3 for winding an endless rope K2 driven by an endless rope drum D1 of a winch W around a carriage 1 suspended on a main rope K1 fixedly locked at both ends. The endless cable drum 3 is installed rotatably and fixedly by a brake, and a hoisting cable drum 15 is interlocked with the endless cable drum 3. On the other hand, the base end is wound around the stop cable drum D2 of the winch W, and the tip end is connected to the endless cable drum 3. A stop rope drum 4 for winding the fixed stop rope K3 is rotatably mounted on the carriage 1 and fixed by a brake, and is interposed between the carriage 1 and the stop rope K3. , a tension sensing mechanism for sensing the tension of the stop rope K3; a tension applying mechanism for applying a constant tension to the stop rope K3; and a tension sensing mechanism for applying a constant tension to the stop rope K3; A cable automatic carriage is equipped with a brake switching mechanism consisting of a link mechanism for alternately switching between brake on and off states. 2 The brakes of the endless rope drum 3 and the stop rope drum 4 are built into the respective drums 3 and 4, and brake shoes 26 are brought into pressure contact with the inner peripheral surfaces 3a and 4a of each drum 3 and 4. A cable automatic carriage according to claim 1. 3. The tension sensing mechanism includes a frame 5 of the carriage 1;
a tension sensing lever 22 for sensing the tension of the stop rope K3 rotatably supported by the lever 22;
and a pulley 23 that guides the stop cable K3, and the tension applying mechanism includes an operating lever 46 connected to the tension sensing lever 22, and an operating lever 46 fixed to a rotating shaft 44 supported on the frames 5, 5. By the lever 45, the interlocking link 47 connected to both the levers 46, 45, the tension applying lever 56 connected to the rotation shaft 44, and the tension applying spring 54 applying tension to the tension applying lever 56. A cable automatic carriage according to claim 1, constructed in the following claims. 4. The link mechanism includes an operating lever 59 attached to the rotation shaft 44, a pair of interlocking links 65 and 66 connected to the lever 59, and a V-shaped lever 63 rotated by the links 65 and 66. , 64 and toggle links 76, 77 which alternately switch the brakes of the endless rope drum 3 and the brake operation shafts 34, 34 of the stop rope drum 4 into and out of the state by the same levers 63, 64. Cable automatic carriage according to claim 3, constructed.