JPH0794317B2 - Self-propelled wood collecting machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is suitable for rough roads and slopes.
Relates also easily improved self-propelled timber yarding machine capable of moving by self, more particularly, self and so can easily synchronize funicular that must be returned winding-winding so synchronize < The present invention relates to a traveling type timber collecting machine.

[0002]

2. Description of the Related Art As is well known, felled lumber felled in mountainous areas is usually collected by a lumber gathering machine at a predetermined gathering place, where it is loaded on a truck or the like and treated at a timber factory or the like. Transported to the place. A conventional example of a method for collecting lumber with such a lumber collecting machine will be described below with reference to FIG. 5 which is an explanatory view of the construction. Reference numeral 51 shown in the same drawing indicates a plurality of steel ropes. It is a stationary type timber collecting machine provided with a plurality of steel rope winding machines 52 for winding and rewinding.

[0003] One or a plurality of sheaves 53 are attached to the surroundings of the wood collecting machine 51 and a plurality of standing trees (which may be root stocks) around the felled area. Various steel ropes wound and unwound by the steel rope winder 52 are wound around these sheaves 53 and stretched around them.

More specifically, a main rope (SKL) 55 for supporting the carriage 54, which suspends the felled wood W and carries it to the collecting place Y, is reciprocally movable, while a sheave 54a provided on the carriage 54 is provided. The lifting rope (LFL) 56 that is hung up and down to raise and lower the hook 54b for suspending the felled material W is SK.
The tip of a pullback cord (HBL) 57 stretched along the L55 and stretched about half of the steel cord around the outer circumference of the felling area is connected to the hook 54b, which is a hanging tool. Are stretched around.

Further, at a position close to a hook 54b vertically provided on the HBL 57, a pulley 58a is provided,
Sheave 53 around the circumference of the other half of the felled area
A pull-in rope (DRL) 58 that is hung around is stretched around. In other words, the HBL stretched in this way
The inside of 57 and the DRL 58 is configured to be a logging area for wood.

Therefore, when the hook 54b is lowered by the unwinding of the LFL 56 and the felled material W is hung on the hook 54b, the LFL 56 is wound by a predetermined amount and the felled material W is wound.
It is lifted, then HBL57 the DRL58 and are both rewound, since calibration Li Tsu di 54 is reciprocated along the SKL55, felled in felling areas the lumber W
Will be collected at a predetermined gathering place Y.

When the felling in the felling area is finished, the sheave 53 attached to the standing tree and the steel ropes stretched around the sheave 53 are removed, and the timber collecting machine 5 is removed.
Must move with 1 to another logging area. Although the work of removing, moving, and mounting these is different depending on the size of the logging area, it generally takes about four days, which is extremely difficult work.

In view of the above situation, a self-propelled wood collecting machine capable of mounting and removing the sheave 53 near the collecting place Y and facilitating the movement of the wood collecting machine 51. Was developed. Hereinafter, the structure of the self-propelled wood collecting machine will be described with reference to FIG. 6 which is a side view of the self-propelled wood collecting machine 61. It will be. For more details,
A plurality of steel rope winders 62 are attached to the wood collecting machine main body 61a, and a bending type undulating tower 64 having a plurality of sheaves 63 is provided at the tip. The track 61
What is provided between the driver's seat 61c of b and the wood collecting machine main body 61a is a control room 61d for controlling the operation of the wood collecting machine main body 61a.

Therefore, since the wood collecting machine 61 is of a self-propelled type, it can be moved freely, and since the sheave 63 is attached to the tip of the tower 64 which can be raised and lowered, the standing tree near the collecting place Y can be obtained. It eliminates the need to install and remove the sheave to and from it, and the preparation time for logging logging can be greatly reduced. By the way, the above is an example of a self-propelled wood collecting machine, but there is also a towed wood collecting machine.

[0010]

However , the timber felling place is not always the place where there is a road, and there are cases where the timber logging machine must be carried up to the top of the mountain. The above-mentioned truck-type self-propelled timber logging machine cannot be self-propelled to the top of the mountain unless it is a road that is maintained as it is and has a proper slope . in this regard
Can be solved by using a track-type traveling carriage
It However, since the HBL and DRL need to be wound and rewound in synchronization with each other, the rotation of the steel rope winder must be controlled . For this purpose, for example, but HST or the like is used, a problem to be solved that the adjustment is difficult to handle difficult.

Accordingly, the present invention has been made in view of the above circumstances, and to provide easy self-propelled timber yarding machine handling can easily synchronize the rotation of the steel Sakumakito machine.

[0012]

SUMMARY OF THE INVENTION The present invention is designed to apply tension to each steel rope.
If the steel rope winder is driven by transmitting the rotation of the gear through the rotational force transmission device that can freely engage and disengage, the steel rope winder can be easily driven synchronously. It was made paying attention to that.

Therefore, the feature of the self-propelled wood collecting machine according to claim 1 of the present invention resides in that a self-propelled wood collecting machine is provided on a revolving frame provided so as to be revolvable around a vertical axis on a track type traveling carriage. At the top, a skyline sheave on which a skyline consisting of steel ropes is movably supported, and a skyline sheave for movably supporting a carriage for hanging felled lumber for suspending felled timber, and a collecting place for the felled lumber. A mainline sheave to which a mainline made of steel rope to be moved is hung, and a straw line made of steel rope that rotates a straw line drum that winds and rewinds the hanging material for felling material provided on the carriage A hole back line sheave to which a hole back line made of steel rope for moving the line sheave and the carriage to the location where the felled material is suspended can be hung. There provided with undulations freely tower consisting respectively provided, comprising a winding-unwinding steel ropes winder each of said steel ropes hung on these sheaves, winding-up the previous SL mainline sheave and the main line between the steel ropes winder back, driven by a gear which is rotated via the engagement and releasable clutches and brakes and winding-unwinding a main line which is applied to the main line sheave In addition, the main line sheave winch for applying tension to the main line is provided , and the engagement / disengagement between the sheave for the hole back line and the steel rope winder for winding / rewinding the hole back line can be freely performed. Gears rotated through various clutches and brakes and driven synchronously with the winch for main line and hung on the sheave for hole back line Winding the down-rewind
And self-propelled timber provided with a hole back line sheave winch for applying tension to the hole back line
Steel for winding and unwinding the main line in a collecting machine
Main line hydraulic pump / motor for driving the rope winder
And a steel rope winder that winds and unwinds the whole back line.
Driven by a hydraulic pump / motor for hall back line
A circulating circuit is formed by interposing, and a steel of the circulating circuit is formed.
Main line and hall back line for each winder
Both hydraulic pumps and motors that generate rotational force on the winding side
Hydraulic fluid in the direction of the circulation circuit on the side communicating with the port
A check valve is installed in the direction of flow and the main hydraulic
The charging pump that is rotated by
It is located where the hydraulic oil supply pipe line that is interposed is in communication .

[0015] It is a feature of the self-propelled timber yarding machine according to claim 2 of the present invention, in the self-propelled timber yarding machine according to claim 1, wherein, to drive the front SL pump motor straws line two conduits via a changeover valve of four-port three-position,
One is provided with a hydraulic circuit communicating with the communication side of the hydraulic oil supply line of the circulation circuit, and the other is connected with the anti-communication side.

[0016]

According to the self-propelled wood collecting machine according to the first aspect of the present invention, the working oil discharged from the charging pump driven by the rotation of the main hydraulic motor is transferred from the working oil supply pipeline to the circulation circuit. When supplied, the mainline hydraulic pump / motor and the hallback line hydraulic pump / motor try to rotate in the same direction, so the steel line winder that drives these hydraulic pumps / motors will not be connected to the mainline. a hole backline rotating force is generated in the winding Ru side, both tension is applied to the main line and the hole backline. When the brake is disengaged at the same time as the rotation of the main hydraulic motor, the clutch is engaged, and the main line sheave winch and the hole back line sheave winch are driven synchronously, tension is applied. One of the main line and the hole back line is wound and the other is unwound, one of the steel rope winders winds one of the main line and the hole back line, and the other of the main line and the hole back line Rewind the other one. In this case, by the return winding-winding of steel ropes by steel ropes winder, hydraulic oil because the other is a motor working with hand, of the two hydraulic pump motor pumping action 循
It circulates in the ring circuit, and both hydraulic pumps and motors rotate at the same speed.
Roll over. Depending on the diameter of the body, which is due to the difference in the number of turns of the steel rope,
The main line or hall back
The winding and unwinding lengths of the Klein are different, but
In-line sheave winch and hole back line
-Main line with hall winch and hall back light
Due to the action of applying a tension to the cable, the tension is continuously applied to the main line and the hole back line while continuing the winding and rewinding.

According to the self-propelled wood collecting machine of the second aspect of the present invention, in addition to the action of the first aspect, the hydraulic oil discharged by the pump action of the hydraulic pump / motor is 4
Pump motor straw line by the hydraulic fluid via the changeover valve ports 3 positions and flows from the circulation circuit is rotated in the same direction, it is possible to return the winding-up the straw lines while applying a tension.

[0019]

EXAMPLE An example of a self-propelled wood collecting machine according to the present invention will be described below with reference to a side view of FIG. 1, a plan view of FIG. 2, and a schematic configuration diagram of a steel rope winder drive system. 3 and FIG. 4 of the hydraulic circuit diagram, reference numeral C shown in FIGS. 1 and 2 is a traveling vehicle, and the traveling vehicle C is a crawler-type traveling carriage 1 having a known configuration. And a swivel frame 2 supported on the traveling carriage 1 so as to swivel around a vertical axis, and a tower 4 having a structure described later that is swung up and down by a hoisting cylinder 4a.
And four steel rope winding machines are mounted respectively.

The details of the tower 4 are two-step telescopic type, and can be expanded and contracted by pushing and pulling the inner cylinder inserted into the outer cylinder, and the pin can be kept in the most extended state, and the tip end side thereof. Includes a skyline (hereinafter referred to as SKL) 5 that supports a carriage (not shown), a main line (hereinafter referred to as ML) 6 that moves the carriage to a gathering place, and a drum for a straw line installed in the carriage. A straw line (hereinafter referred to as STL) 7 that raises and lowers a hook that is a felled timber hanging device that suspends felled lumber and a hole back line (hereinafter referred to as HBL) that moves the carriage from the collecting place to the felled lumber suspending position. The sheaves 3a, 3b, 3c, 3d for SKL, ML, STL, and HBL to which the steel ropes of No. 8 are hung are attached. Of course, the tower may be a foldable type that is folded in two as in the second conventional example of a self-propelled type using a truck shown in FIG.

Further, on the front and rear of the tower 4, that is, on the left side of the tower 4 in the figure, there is an SKL winder 9 for winding and rewinding the SKL 5, and on the right side of the figure is an ML.
Three steel reels: a ML winder 10 for winding / rewinding 6; an STL winder 11 for winding / rewinding STL7; and an HBL winder 12 for winding / rewinding HBL8. Machine is installed.

On the other hand, as shown in FIG. 3, the drive gear 14 is fitted to the output shaft of the main hydraulic motor M ₁ rotated by the input of the operation signal for operating the carriage, and the driven gears 15 and 18 meshing with the drive gear 14 are provided. Provided,
A charging pump P ₁ having a driven gear 13 that meshes with the driven gear 15 is arranged. That is, when the drive gear 14 is rotated by the main hydraulic motor M ₁ , the driven gears 15 and 18 are rotated, and the rotation of the driven gear 13 drives the charging pump P ₁ .

The rotation of the driven gear 15 is performed by the wet clutch 16 and the brake 43 through the sheave 3 for ML.
The ML6 that has been subjected to b return winding, winding, spacing of scaling
While the ML 6 is wound around a plurality of sheaves supported by parallel shafts, the ML 6 is transmitted to the ML sheave winch 17 having a function of imparting tension to the steel rope, while the rotation of the driven gear 18 is transmitted to the wet clutch 19 and The HBL 8 hung on the HBL sheave 3d is wound and unwound via the brake 44 and transmitted to the HBL sheave winch 20 having the same structure as the ML sheave winch 17 having a function of imparting tension to the steel rope. , ML6 wound and unwound by the ML sheave winch 17 is wound and unwound by the ML winder 10, and HBL8 that is wound and unwound by the HBL sheave winch 20 is the HBL winder. It is configured to be wound and unwound by 12. Further, by the operation signal, the brake 4 interposed between the driven gears 15 and 18 and the sheave winches 17 and 20.
3, 44 are disengaged and the wet clutches 16, 19 are engaged so that the rotational force transmitted to the sheave winches 17, 20 is controlled. Reference numeral 9 shown in the figure is an SKL winding machine that winds and rewinds the SKL 5.

The ML6 wound and unwound by the ML sheave winch 17 is the ML hydraulic pump / motor M.
_The ML winder 10 is wound and unwound by the ML winder 10 that is rotated by _2. The rotational force of the ML hydraulic pump / motor M ₂ is transmitted by the main hydraulic motor M ₁ via the drive gear 14 and the driven gears 15 and 13. ML6 obtained from the hydraulic oil discharged from the charging pump P ₁ driven by
Winding machine 1 for ML to apply the rotational force required for winding and rewinding
The HBL 8 which is set so that it can be applied to 0 and is wound and rewound by the HBL sheave winch 20 is wound and rewound by the HBL winder 12. Is set so that the operating oil discharged from the charging pump P ₁ imparts a rotational force required for winding / unwinding the HBL 8. Thus, M
The reason why the sheave winches 17 and 20 are used for winding and rewinding the L6 and the HBL8 is that the carriages need to be synchronized in order to reciprocate as described above.
Of course, the HBL winder 12 is also connected to the HBL hydraulic pump / motor M ₃ having the same configuration as the ML hydraulic pump / motor M ₂ .

The STL winder 11 always winds and rewinds the STL 7 in the same direction as the ML 6 in accordance with the movement of the carriage. That is, the pressure of the hydraulic oil supplied from the charging pump P ₁ in the circulation circuit 31 of the configuration to be described later, via the solenoid changeover valve 42, conduit 40, gives a rotational force to the STL hydraulic motor M ₄ The rotating force for winding the STL 7 is constantly applied to the STL winder 11. Therefore, when the carriage moves in a direction away from the self-propelled wood collecting machine, the STL 7 is rewound in a state where tension is applied from the STL winder 11, and conversely, the carriage is moved by the self-propelled wood collecting machine. When moving in the direction of approaching the machine, it will be wound with tension applied.

By adopting such sheave winches 17 and 20, it is necessary to control the rotation of the steel rope winder by HST or the like to wind and rewind the HBL and DRL in synchronization with each other as in the conventional case. However, due to the existence of the drive gears 15 and 18 that mesh with the driven gear 14, it is only necessary to engage the wet clutches 16 and 19 and ML6 and HBL.
Since it is possible to wind and rewind in synchronism with 8, there is an effect that handling of the self-propelled wood collecting machine becomes extremely easy.

By the way, the charging pump P ₁ and the two hydraulic pump / motors M ₂ and M ₃ are the ML winding machine 10 and H driven by a hydraulic circuit 30 as shown in FIG.
ML6, HBL8 and STL7 which are respectively wound and rewound by the BL winder 12 and the STL winder 11.
It is configured to give the required tension to and.

That is, the hydraulic circuit 30 is provided with the ML hydraulic pump / motor M ₂ and the HBL hydraulic pump / motor M ₃ and via a pilot conduit 32 branched from the hydraulic oil inflow side. The pressure of the hydraulic fluid flowing in
A circulation circuit 31 having a brake 33 for releasing the braking of the two hydraulic pumps / motors M ₂ and M ₃ is formed, and the circulation circuit 31 has a non-return direction in which hydraulic oil flows in the direction of the circulation circuit 31. A hydraulic oil supply pipe line 34, in which a valve 35 is interposed, is in communication, and is configured to be supplied with hydraulic oil from a charging pump P ₁ driven by the operation of the main hydraulic motor M ₁ . Furthermore, this circulation circuit 3
1 from the electromagnetic changeover valve 42 is communicated with the STL motor _{M 4} via line 40. Further, a relief pipe line 38 in which a relief valve 39 is interposed branches off from the communication side of the hydraulic oil supply pipe line 34 of the circulation circuit 31, and the set pressure is M.
The necessary tension is applied to each of the L, HBL, and STL winders 10, 12, and 11.

Hereinafter, the operation mode of the self-propelled wood collecting machine having the above-mentioned structure will be described. First, when the logging site is transported by being loaded on a truck and the logging site is a mountainous area without a road, for example. If you set up a passage to the extent that felled trees, you can travel to reach your destination by self-propelled movement. When this self-propelled timber logging machine arrives at the felling site, SKL5, ML6, STL7, and HBL8 are SKL sheave 3a, ML sheave 3b, and ST, respectively.
The tower is erected by being hung on the sheave 3c for L and the sheave 3d for HBL and operating the undulating cylinder 4a.

In parallel with this, a plurality of sheaves are attached to standing trees, roots, etc. around the outer circumference of the felled area, and SKL
5, ML6, HBL8, and STL7 are stretched around so that hooks suspended on the carriage can be moved up and down. And when collecting felled timber, for ML / H
ML6 and HBL that are synchronously wound and rewound in a state where tension is applied by the BL sheave winches 17 and 20.
With 8, the carriage is moved reliably.

That is, when the hydraulic oil is supplied from the hydraulic oil supply line 34 to the circulation circuit 31, the ML hydraulic pump / motor M ₂ and the HBL hydraulic pump / motor M ₃ try to rotate in the same direction. Therefore, in the winder 10 for ML and the winder 12 for HBL that drive both hydraulic pump motors M ₂ and M ₃ , a rotational force is generated on the side that winds ML 6 and HBL 8, and ML 6 and Tension is applied to HBL8. The ML sheave winch 17 is connected to the main hydraulic motor M ₁
Driven by the drive gear 14, the driven gear 15, and the wet clutch 16, and the HBL sheave winch 20 is driven by the drive of the main hydraulic motor M ₁ synchronously via the drive gear 14, the driven gear 18, and the wet clutch 19. . For example, driving of the main hydraulic motor _{M 1}
Then, move the HBL8 sheave winch 20 to the side to rewind the HBL8.
While rotating, ML6 sheave winch 17 for ML
When rotated to the winding side, HBL8 is given tension.
While being rewound by the HBL winder 12 in the closed state,
The ML 6 is wound by the ML winder 10 with tension applied.
It is rolled up. In this case, rotate in the rewinding direction of HBL8
HBL hydraulic pump / motor M
_The hydraulic oil discharged from No. ₃ circulates in the circulation circuit 31 and ML
It flows into the use hydraulic pump motor M _2, the hydraulic port for this ML
The pump motor _{M 2} and the hydraulic pump-motor _{M 3} for HBL
Since it rotates in the winding direction of ML6 at the same number of rotations, ML
Winding machine 10 rotates at the same speed as HBL winding machine 12
(However, the number of HBL8 windings around the body of the HBL winder 12
And the number of windings of the ML6 around the body of the ML winder 10
And the diameter of the body of the HBL winder 12 is the ML winder 10
Since the diameter is larger than the diameter of the body of the
The number of turns gradually increases. ) Do. Therefore, the sea for ML
The winding length of ML6 by the winch 17 is the winding length for ML
Longer than the winding length of ML6 by machine 10,
The difference in the winding length is determined by the ML sheave winch 17
Since it is absorbed, ML6 is in a state where a predetermined tension is applied.
Is wound up in. Then, the ML 6 by the ML winding machine 10
The diameter of the body of both winders 10 and 12 is reversed as
Then, the ML6 that is wound by the ML sheave winch 17
Winding of ML6 by winding machine 10 for ML than winding length of
There is a shortage due to the long length, but the shortfall is ML
Supplemented by feeding out the absorbed portion of the sheave winch 17
Be paid. On the contrary, when you rewind ML6 and wind HBL8
In the case of H, it is wound up by the HBL sheave winch 20
It is wound by BL8 winding length and HBL winding machine 12.
The difference from the winding length of HBL8 is the sheave win for HBL.
HBL8 is given a predetermined tension by being absorbed by
It is wound up in the rolled state. And both winders 10, 12
Insufficient winding length of HBL8 due to the reversal of the body diameter
Is the same as the above, the absorption of the sheave winch 20 for HBL
It will be replenished in minutes. However, place the carriage on one side
From one side to the other and from the other side to the other side
Considering the case of winding the ML, the ML winding machine 10 winds the ML6.
Length and rewinding of HBL8 from the HBL winder 12
The length is the same as that of the HBL winder 12
HBL8 winding length and ML from ML winding machine 10
The rewind length of 6 is the same length. On the other hand, the STL 7 is integrated with a hook suspended on the carriage, and tension is constantly applied so that the STL 7 winds and rewinds in accordance with the movement of the carriage. The amount of hydraulic oil in the circulation circuit 31 required for the movement is supplied by the charging pump P ₁ driven by the main hydraulic motor M ₁ .

In parallel with the winding / rewinding of the ML6 and the winding / rewinding of the HBL8, the winding / rewinding of the STL7 by the STL winding machine 11 and the S by the SKL winding machine 9 are performed.
If the felled lumber is collected by carrying out the winding and rewinding work of KL5 and there is no felled lumber around the movement of the carriage, the felled lumber outside of it will be gathered around the movement of the carriage. In the embodiment, the felling region can be moved in a fan shape around the connecting portion at the tip of the SKL 5 by the traveling carriage 1, so that a collecting operation of felled materials unlike the conventional case is unnecessary. This is a traveling carriage 1 and a swing frame 2.
Since it has the same structure as the main body of a self-propelled timber gathering machine consisting of and the main body of a hydraulic excavator, it has excellent stability and is capable of continuous turning operation. This is because a small turn can be made so that it can also turn by something.

On the other hand, when the self-propelled wood collecting machine is not operating, that is, when the operation signal is not input,
Since the wet clutches 16 and 19 for transmitting the rotational force to the ML and HBL sheave winches 17 and 20 are disengaged and the brakes 43 and 44 are engaged, the main hydraulic motor M ₁ is not rotating, and thus charging is performed. The long pump P _{1 is} also stopped. Therefore, the circulation circuit 31 of the hydraulic circuit 30
The pressure of the hydraulic oil inside drops, and the hydraulic oil in the brake cylinder of the brake 33 escapes through the pilot conduit 32.
The brake 33 brakes the rotation of the ML winder and the HBL winder, so that the ML 6 and the HBL 8 will not loosen even when the self-propelled wood collecting machine is at rest.

[0034]

As described above in detail, according to the self-propelled timber yarding machine according to the present invention, the rotation of the gear via the clutches
A hydraulic pump / motor for ML, which is transmitted to the sheave winch for ML and the sheave winch for HBL that applies tension to the steel rope, and is interposed in the charging pump and the circulation circuit,
The ML, the HBL, and the STL are each tensioned by synchronously rotating the HBL hydraulic pump / motor, and the ML is not required to perform difficult control by using the HST or the like as in the conventional case. the HBL and as it can be returned winding-winding respectively rotated synchronously with the winding-unwinding steel ropes winder is synchronized with the ML and HBL, the very relative improvement in ease of handling of their It has a great effect.

[Brief description of drawings]

FIG. 1 is a side view of a self-propelled wood collecting machine according to an embodiment of the present invention.

FIG. 2 is a plan view of a self-propelled wood collecting machine according to an embodiment of the present invention.

FIG. 3 is a schematic configuration explanatory diagram of a steel rope winder drive system of a self-propelled wood collecting machine according to an embodiment of the present invention.

FIG. 4 is a hydraulic circuit diagram according to an embodiment of the present invention.

FIG. 5 is a configuration explanatory view showing a method of collecting lumber with a lumber collector according to a first conventional example.

FIG. 6 is a side view of a self-propelled wood collecting machine according to a second conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Traveling vehicle, 2 ... Revolving frame, 3a ... SKL sheave, 3b ... ML sheave, 3c ... STL sheave, 3d
... HBL sheaves, 4 towers, 4a undulating cylinders,
5 ... SKL, 6 ... ML, 7 ... STL, 8 ... HBL, 9 ...
SKL winder, 10 ... ML winder, 11 ... STL winder, 12 ... HBL winder, 13 ... Driven gear,
14 ... Drive gear, 15 ... Driven gear, 16 ... Wet clutch, 17 ... Sheave winch for ML, 18 ... Driven gear, 19 ... Wet clutch, 20 ... Sheave winch for HBL, 30 ... Hydraulic circuit, 31 ... Circulation circuit, 32 ... Pilot Pipeline, 33 ... brake, 34 ... hydraulic oil supply pipeline,
35 ... check valve, 38 ... relief pipe, 39 ... relief valve, 40 ... pipe, 42 ... electromagnetic switching valve, 43, 44 ... brake, C ... vehicle, M 1 _... main hydraulic motor, _{M 2} ... M
L hydraulic pump / motor, M ₃ ... HBL hydraulic pump /
Motor, M ₄ ... STL hydraulic motor, P ₁ ... Charging pump.

Claims (2)

[Claims] 1. A felling lumber suspender for suspending felled lumber is hung above a swing frame provided on a crawler-type traveling carriage so as to be rotatable about a vertical axis. A skyline sheave to which a skyline consisting of steel ropes that movably supports a carriage is hung, a mainline sheave to which a main line consisting of steel ropes that moves the carriage to a logging location for felled lumber are hung, and a carriage provided to the carriage A hole back line made up of a straw line sheave for winding a straw line drum that winds up and rewinds the felling material hanging device, and a steel line for moving the carriage to the felling material hanging place. It is equipped with a tower that can be undulated with a sheave for hall back lines on which
Between these respective said steel ropes hung on the sheave includes a winding-unwinding steel ropes winder, before Symbol winding main line sheave and the main line unwinding steel ropes winder,
It is driven by a gear which is rotated via the engagement and releasable clutches and brakes and winding-unwinding a main line which is applied to the main line sheave, and wherein
A mainline sheave winch that applies tension to the mainline is provided , and a clutch that can be engaged / disengaged between the sheave for the hole back line and the steel rope winder that winds / unwinds the hole back line, and It is driven by a gear which is rotated with the main line winch synchronization via a brake and the winding-unwinding a hole back line hung on the sheave Hall backline, and the holes
In a self-propelled wood collecting machine equipped with a hole backline sheave winch that applies tension to the backline ,
Drives a steel rope winder that winds and unwinds the main line
Main line hydraulic pump / motor and hall back
Hall bar that drives a steel rope winder that winds and unwinds the line
Of the hydraulic pump and motor for
A loop circuit is formed, and each of the steel loop winders of the circulation circuit is formed.
Rotate to the side that winds the main line / hole back line
Connect to both hydraulic pump / motor ports that generate force
The check valve in the direction that the hydraulic oil flows in the direction of the circulation circuit.
Is installed and is rotated by the main hydraulic motor.
Work that tea over managing pump for supplying the aggressive media, which are interposed
A self-propelled timber collecting machine characterized by connecting hydraulic oil supply lines . Wherein two of the conduits to drive the front SL pump motor straw line via a changeover valve of four-port three-position, in one of the communicating side of the working oil supply pipe of the circulation circuit,
The self-propelled timber yarding machine according to claim 1, characterized in that it comprises a hydraulic circuit and the other communicates with the respective counter-communication position.