JP3018708U - Transporter for cable crane - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the size and weight of a carrier for cable cranes and to improve its safety, operability, and work efficiency. [Structure] When the transmitter of the radio control device installed on the hoisting machine transmits a signal of "fixing the carrier", the braking block control device 30 rotates the motor 26 and extends the extender 28 to the right in the figure. In order to make the lever 23 rotate to the right in the figure,
Since the roller 24 contacts the cam 21 and pushes the braking block 12 upward in the drawing, the traverse line 19 is pressed by the braking block 12 to the fixed block 11, and the carrier 7 is fixed to the traverse line 19, and the fishing down sheave. It is possible to move up and down. Further, when a signal of "release of carrier" is transmitted from the transmitter, the braking block control device 30 rotates the motor 26 and retracts the extender 28 to the left in the drawing, so that the roller 24 and the cam 21 are separated from each other. Since the contact state is released and the gripping machine 13 releases the traverse rope 19, the carrier 7
Can travel along the traverse line 19.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a carrier for a cable crane for carrying down felled or lumber lumber for fishing.

[0002]

[Prior art]

 FIG. 3 shows the structure of the main part of a conventional cable crane. 1 is a front pillar with a pulley 2 attached to the tip, 3 is an original pillar with pulleys 4 and 5 attached to the tip, and 6 is a front pillar 1. Also, the support line 7 that supports the main pillar 3 has two running wheels 9 on the upper side of the substrate 8, one guide wheel 10 on the lower side of the substrate 8, and a gripping machine 13 consisting of a fixed block 11 and a braking block 12. Carryers respectively arranged on the substrate 8 between the two traveling wheels 9, 14 is a hanging pulley attached with a hook 15 for hooking wood or the like, and 16 is a traverse cylinder 17 and a hoisting cylinder 18. The hoisting machine 19 is passed between the fixed block 11 and the braking block 12 of the gripping machine 13 and is hung on the traveling wheel 9 and fixed to the base plate 8 at one end hung on the pulley 2. , The other end hung on the pulley 4 is wound around the traverse winding cylinder 17 and mounted between the front pillar 1 and the main pillar 3 to move the carrier 7. A traverse rope which is also used as a main rope and which is suspended in a possible state, 20 has one end hung on the guide wheel 10 and the hanging pulley 14 fixed to the base plate 8, and the other end hung on the pulley 5 for the hoisting drum. It is a hoisting rope that doubles as a traverse rope that is wound around 18 and mounted between the main pillar 3 and the carrier 7.

In the conventional cable crane configured as described above, when the hanging pulley 14 is moved up and down, the traverse rope 19 is pressed against the fixed block 11 by the braking block 12 that is pushed upward in the drawing by human power or hydraulic pressure. , The traverse rope 19 is gripped by the trolley machine 13, that is, by closing the reticle machine 13, the carrier 7 is fixed to the traverse rope 19, and the hoisting rope 20 is wound on the hoisting drum 18. Or, it is unwound from the hoisting drum 18.

When the carrier 7 is made to travel in the direction of the front pillar 1 (left direction in the drawing) or in the direction of the original pillar 3 (right direction in the drawing), the braking block 12 pushes the traverse rope 19 to the fixed block 11. By releasing the pressure, the traverse rope 19 is released from the gripping machine 13, that is, the gripping machine 13 is opened to allow the carrier 7 to travel, and the traverse rope 19 is attached to the traverse winding cylinder 17. At the same time as winding and pulling the carrier 7 in the direction of the front pillar 1, the hoisting rope is wound at the same speed as the hanging pulley 14 does not move up and down, that is, the speed at which the traverse rope 19 is wound on the traverse winding cylinder 17. A speed at which the take-up pulley 14 does not move up and down at the same time as the 20 is unwound from the hoisting drum 18 or the hoisting rope 20 is wound onto the hoisting drum 18 and the carrier 7 is pulled toward the original column 3. That is, the traverse rope 19 is unwound from the traverse winding cylinder 17 at the same speed as the hoisting rope 20 is wound around the hoisting winding cylinder 18.

[0005]

[Problems to be solved by the device]

 By the way, when the gripping machine 13 is opened and closed manually, the opening and closing work must be performed directly below the carrier 7, so that the gripping machine 13 or the hoisting machine 16 may be operated incorrectly, or the gripping machine 13 may not be operated properly. If you do not open and close it securely, or if the string tied to the opening and closing mechanism of the rigging machine 13 is entangled in a standing tree and you close the lacing machine 13 at an unexpected place, you may be injured. However, there is a problem in that it is likely to cause

Further, when the opening and closing of the gripping machine 13 is performed by the hydraulic device controlled by the radio control device, the hydraulic device must be configured so that the accumulator accumulates pressure each time the carrier 7 travels. Therefore, the structure of the hydraulic system becomes complicated, the size of the transporter 7 becomes large and the weight becomes heavy, which makes it difficult to transport it on a sloping land such as a mountainous area where the foothold is poor, and the weight for hanging timber etc. There was a problem of decrease.

Furthermore, since the accumulator can store pressure only enough to open and close the gripping machine 13 several times, the gripping machine 13 is repeatedly opened and closed when the transporter 7 is not run or when it is run for only a short distance. Then, the pressure of the accumulator is insufficient and the gripping machine 13 cannot be opened or closed. In this case, the rigging machine 13 cannot be opened and closed again after the carrier 7 is run idle and the pressure is accumulated in the accumulator, which causes a problem that the operability and work efficiency of the cable crane deteriorate. .

The present invention has been made in view of the above problems, and an object of the present invention is to provide a small-sized and lightweight carrier for a cable crane, which improves safety, operability, and work efficiency.

[0009]

[Means for Solving the Problems]

 The present invention comprises at least an electric motor and an extender that expands and contracts by converting the rotary motion of this motor into linear reciprocating motion, and reciprocates a braking block that is directly connected to the expander or through a transmission force increasing mechanism. Then, the braking block drive that presses or releases the traverse rope from the fixed block, the receiver of the radio control device, and the motor based on the signal received by the receiver, It is equipped with a braking block control device consisting of a controller for controlling the pressing operation of the traverse rope to the fixed block or the releasing operation from the fixed block by the braking block, and a battery as a power source for the motor and the braking block control device. To do.

In addition, the transmission force increasing mechanism expands and contracts with a cam formed on a surface of the braking block that faces the surface of the braking block that presses the traverse rope and a fulcrum that is swingably attached to the substrate. It consists of a lever that is rocked by the machine and a roller that contacts the cam and presses the braking block in the direction that presses the traverse rope against the fixed block.

[0011]

[Action]

 According to the present invention, by opening and closing the gripping machine by the wireless control device, the gripping machine can be opened and closed and the hoisting machine can be operated independently by a place apart from the carrier 7. Since the strings for opening and closing do not hang down from the carrier, the possibility of causing a personal injury or the like is extremely small and the safety is very high.

Further, since the braking block drive machine is composed of only a motor, a gear reducer and an extender, or a motor and an extender, the structure is simple and the carrier is small and lightweight. In addition, it facilitates transportation on sloping terrain with poor footing, such as in mountainous areas, and can reduce the weight of lumber to be lifted by the lighter weight of the carrier.

Further, since the motor of the braking block driving machine is driven by the battery, the opening and closing of the gripping machine can be repeated without making the carrier run idle, so that the operability and working efficiency of the cable crane are improved. Remarkably improved.

[0014]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front view showing the structure of an embodiment of the present invention, and FIG. 2 is a right side view of the embodiment of the present invention shown in FIG. The same part is shown.

Further, 21 is an arcuate cam formed on the lower end surface of the braking block 12 in the figure, 22 is a guide rail for holding the fixed block 11 and the braking block 12, and an upper part of the guide rail 22. Is fixed to the upper part of the substrate 8 together with the fixed block 11, and the lower part of the guide rail 22 holds the control block 12 slidably up and down in the figure.

Reference numeral 23 denotes a swingable lever having a fulcrum attached to an upper portion of the substrate 8 located at a position deviated from the center point of the arcuate cam 21, and 24 denotes a roller attached to an intermediate portion of the lever 23. When the lever 23 rotates rightward in the figure and contacts the cam 21, the lever 24 pushes up the braking block 12 in the upward direction in the figure and presses the traverse rope 19 together with the fixed block 11 together with the braking block 12. The traverse rope 19 is gripped by the gripping machine 13 to fix the carrier 7 to the traverse rope 19, and the cam 21 and the lever 23 constitute a transmission force increasing mechanism.

Reference numeral 25 denotes an electric motor 26, a gear reducer 27 that reduces the rotational speed of the motor 26 and transmits the rotation speed, and a feed screw (not shown) via the gear reducer 27. An expander 28 that expands and contracts by converting the transmitted rotational motion of the motor 26 into a linear reciprocating motion (horizontal direction in the figure) and a stopper 29 that restricts the feed of the extender 28 to the left in the figure. The brake block drive machine 25 is mounted on the end of the lever 23 and the fulcrum of the expander 28 is swingably attached to the end of the board 8. Therefore, as the lever 23 rotates, it swings in the vertical direction in the figure.

Reference numeral 30 denotes a braking block control device including a receiver (not shown) of the radio control device and a controller (not shown) that controls the rotation of the motor 26 based on a signal received by the receiver, 31 is a battery that serves as a power source for the motor 26 and the braking block control device 30, 32 is a U-link for fixing one end of the traverse rope 19 hung on the pulley 2, 33 is a hoist wound on the guide wheel 10 and the hanging pulley 14. A U-link for fixing one end of the rope 20; 34, a long hole formed in the base plate 8 in the vicinity of the guide wheel 10; 35, a pulley in which a bearing portion 35a of the rotary shaft is fitted. The hoisting rope 20 is fixed at a position close to the guide wheel 10 in order to prevent the hoisting rope 20 from coming off the guide wheel 10. The receiving portion 35a escapes along the elongated hole 34 and is separated from the guide wheel 10. 36 is a stopper that restricts the lifting of the hanging pulley 14 and 37 is a rope guide cover that is provided close to the lower outer periphery of the traveling wheel 9 and the upper outer periphery of the guide wheel 10. Even if the hoisting rope 20 comes off the guide wheel 10 due to vibration or the hoisting rope 20 comes loose from the guide wheel 10, the traverse rope 19 or hoisting rope 20 is automatically put back on the running wheel 9 or the guide wheel 10. It is a thing.

In the cable crane using the present embodiment having the above-described configuration, when the hoisting pulley 14 is moved up and down, the transmitter (not shown) of the radio control device installed on the hoisting machine 16 When the signal of "fixing" is transmitted, the braking block control device 30 rotates the motor 26 and extends the extender 28 in the right direction in the figure, so that the lever 23 rotates in the right direction in the figure. The roller 24 contacts the cam 21 and pushes the braking block 12 upward in the figure. Therefore, the traverse rope 19 is pressed by the braking block 12 against the fixed block 11 to be gripped by the gripping machine 13, and the carrier 7 is fixed to the traverse rope 19. Therefore, if the hoisting rope 20 is wound around the hoisting hoisting drum 18, the hoisting pulley 14 is raised, and if the hoisting rope 20 is unwound from the hoisting hoisting drum 18, the hoisting pulley 14 is lowered.

When the carrier 7 is made to travel in the direction of the front pillar 1 (left direction in the drawing) or in the direction of the original pillar 3 (right direction in the drawing), the transmitter of the radio control device installed in the hoisting machine 16 is used. When the "release of carrier" signal is transmitted, the braking block control device 30 rotates the motor 26 and retracts the extender 28 leftward in the figure, so that the lever 23 rotates leftward in the figure. Then, the contact state between the roller 24 and the cam 21 is released, and the movement of the braking block 12 becomes free. Therefore, the pressing state of the traverse rope 19 against the fixed block 11 by the braking block 12 is released, the gripping machine 13 releases the traverse rope 19, and the transporter 7 can travel along the traverse rope 19. Therefore, the traverse rope 19 is wound up on the traverse winding cylinder 17, and the carrier 7 is pulled toward the front pillar 1, and at the same time, the speed at which the hanging pulley 14 does not move up or down, that is, the traverse rope 19 is traversed. When the hoisting rope 20 is unwound from the hoisting hoisting drum 18 at the same speed as it is wound up, the carrier 7 travels in the direction of the front pillar 1 (leftward in the figure), and the hoisting rope 20 is hoisted. At the same time as the reel 7 is wound around the winding drum 18 and the carrier 7 is pulled in the direction of the original column 3, the speed at which the hanging pulley 14 does not move up and down, that is, the speed at which the hoisting rope 20 is wound around the hoisting drum 18. When the traverse rope 19 is unwound from the traverse winding cylinder 17 at a speed, the carrier 7 travels in the direction of the original pillar 3 (rightward in the figure).

The feed screw of the extender 28 of the braking block drive 25 may be directly connected to the rotating shaft of the motor 26, or the tip of the extender 28 may be directly connected to the braking block 12.

In addition, one of the pair of substrates 8 is mounted on the other substrate 8 with a gap 38 for inserting / removing the traverse 19 and the carrying device 7 traverses while traveling. By constructing it with the closing plate 39 that partially closes the gap 38 in order to prevent it from falling off from 19, it becomes easy to insert and remove the traverse line 19 to and from the carrier 7.

Further, by constructing one of the pair of levers 23 (the back side of FIG. 1 in this embodiment) with two lever members in which the articulation portions are joined by the pins for attaching the rollers 24 to the lever 23, It becomes easy to insert and remove the traverse rope 19 into and from the gripping machine 13.

[0025]

[Effect of device]

 As described above, according to the present invention, the opening / closing operation of the gripping machine and the operation of the hoisting machine can be performed independently by a person who operates the wireless control device to open / close the gripping machine. Moreover, since the strings for opening and closing the gripping machine are not hanging from the carrier, the possibility of causing a personal injury or the like is very small, and the safety is very high.

Further, since the braking block drive device is composed of only a motor, a gear reducer and an extender, or a motor and an extender, the structure is simple and the carrier is small and lightweight. In addition, it has the effect of facilitating transportation on sloping terrain with poor scaffolding such as mountainous areas, and the effect of being able to increase the hanging weight of timber and the like as much as the weight of the carrier is reduced.

Further, since the motor of the braking block drive machine is driven by the battery, the opening and closing of the gripping machine can be repeated without making the carrier run idle, and the operability and work efficiency of the cable crane are improved. The effect of being significantly improved is achieved.

[Brief description of drawings]

FIG. 1 is a front view showing the configuration of an embodiment of the present invention.

FIG. 2 is a right side view of the embodiment of the present invention shown in FIG.

FIG. 3 is a configuration diagram of a main part of a conventional cable crane.

[Explanation of symbols]

1 ... Front pillar (post), 3 ... Original pillar (post), 2, 4, 5 ...
Pulley, 7 ... Transporter, 8 ... Substrate, 9 ... Running wheel, 10 ... Guide wheel, 11 ... Fixed block, 12 ... Braking block, 13
… Grips, 14… Hanging pulleys, 17… Traverse winders, 18
… Hoisting drum, 19… Traverse rope, 20… Hoisting rope, 21… Cam (transmission force increasing mechanism), 23… Lever (transmission force increasing mechanism), 24… Roller (transmission force increasing mechanism), 25… Braking block driver, 26 ... motor, 28 ... stretcher, 30 ... braking block controller, 31 ... battery.

Claims (2)

[Scope of utility model registration request] 1. Arrangement of two running wheels on an upper part of a base plate, one guide wheel on a lower part of the base plate, and a gripping machine comprising a fixed block and a braking block on the base plate between the two running wheels. It is passed between the carrying block and the fixed block and the braking block, and it is hung on the traveling wheel, and one end of the one strut, which is hung on the pulley, is fixed to the substrate, and one of the other strut A traverse rope that also serves as a main rope, in which the other end of one pulley is wound around a traverse winding cylinder and is mounted between the two pillars, thereby suspending the carrier in a travelable state; One end hung on the wheel and the hanging pulley is fixed to the substrate, and the other end hung on the other pulley of the other strut is wound around the hoisting drum, and the other strut and the carrier are connected. A cable clasp consisting of a hoisting rope that is also used as a traverse rope In the motor, at least an electric motor and an extender that expands and contracts by converting the rotational movement of the motor into a linear reciprocating motion, and reciprocates the braking block that is connected to the extender directly or through a transmission force increasing mechanism. A braking block drive that moves and pushes the traverse rope against the fixed block or releases it from the fixed block, a receiver of the radio control device, and the motor based on a signal received by the receiver. And a controller that controls the pressing operation of the traverse rope to the fixed block or the release operation from the fixed block by rotating the braking block, and the motor and the braking block control device. A carrier for a cable crane, which is equipped with a battery serving as a power source for the cable crane. 2. The transmission force increasing mechanism includes a cam formed on a surface of the braking block that faces a surface of the braking block that presses the traverse rope, and a fulcrum that is swingably attached to the substrate. 2. A lever that swings by the telescopic device and a roller that presses the braking block in a direction that contacts the cam and presses the traverse rope against the fixed block. For cable cranes in Japan.