JPS5847795A - Winch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to a winch that can be moved easily and reliably.

There are two conventional winch drive methods: mechanical and hydraulic. Mechanical winches use clutches to change the speed and transmit power through gears, so the transmitted power is reliable. Although it is common because the operation is accurate, it is not possible to perform stepless control because it is a stepwise control, and speed control is difficult because the braking when lowering the load is performed using a band brake, etc. In addition to being unstable, the overall structure of the band brake and the switching device is complicated, resulting in high manufacturing costs. In addition, although hydraulic types allow stepless control and are easy to operate, they have a loss in the power transmission mechanism (leakage loss due to difference in hydraulic resistance), resulting in large energy loss, which poses problems in terms of energy conservation and requires the use of piping. Since a large number are required, a large space is required.

The present invention solves the above-mentioned drawbacks of the conventional winches and combines the advantages of mechanical and hydraulic winches, thereby making the hoisting operation and braking during hoisting stepless and reliable, and furthermore, easy to operate and structured. The purpose is to provide a simple winch. That is, a power shaft connected to a drive device is passed through a hollow shaft of a winding drum that is rotatably supported by a bearing.
A plurality of planetary gears are rotatably mounted on the hollow shaft at predetermined positions of the power shaft so as to mesh with the sun gear, and a ring-shaped gear having teeth on the inner and outer peripheries is provided to surround the planetary gear. A hydraulic pump is provided whose internal teeth are meshed with the planetary gear, and which is driven by the power shaft. It is attached to a winch that is characterized by meshing teeth.

Hereinafter, the present invention will be explained with reference to the drawings.

Figures 1 and 2 (a) and 2 (b) show an embodiment of the present invention. 2), and a ring-shaped hollow shaft (3) is provided on the other side of the winding drum (1),
The side surface of the hollow shaft (3) opposite to the winding drum (1) Ω
One end of four pins (4) is implanted on the same circumference, a planetary gear (5) having a required diameter is rotatably attached to each pin (4), and each pin (4) is rotatably attached to each pin (4). A hollow shaft (6) supporting the other end of ) is provided integrally with the hollow shaft (3), and each hollow shaft (2) (6) is attached to a fixing frame (bearings (8) (71 < 7i) provided respectively. 8') to rotatably support it.

The hollow shaft f2) of the integrally constructed winding drum (1)
A sprocket 0) is provided at the fixed frame (7) side end of the power shaft (9), passing through the power shaft (9) at 31 (6), and the sprocket αυ is connected to the drive device Q by a chain a2.
Connect to 3i. Further, a sun gear (QO) is provided at a predetermined position of the power shaft (9) so as to be able to mesh with the planetary gear (5), and a sun gear (QO) is provided at a predetermined position of the power shaft (9) so as to mesh with the planetary gear (5). (Input shaft α6 of hydraulic pump a attached to 71) is connected.

Furthermore, each of the hollow shafts (31 (6) ) is provided on the outer circumferential surface of the bearing Q8) at.
η, the outer periphery of the ring gear aD is covered with a cylindrical casing a9 having a through hole, and the casing a
Bearings (2
A hydraulic motor ◇ driven by pressure oil sent from the hydraulic pump a9 is installed at four required positions on the side of the casing (1!J), and each output shaft (a) of each hydraulic motor Qη is installed. , : pinions (E) are provided, and each pinion (C) is meshed with the external teeth of the ring-shaped gear aη. (C) is a fixing rod for preventing rotation of the casing Ql; (C) is the power shaft (
9).

Next, the operation of the present invention will be explained.

When the drive device α is driven, the subrocket) Qυ, the power shaft (9), and the sun gear α are rotated together through the chain a2, and each planetary gear (5) meshing with the sun gear α is rotated as a unit. As shown in FIG. 2(a), the sun gear a is rotated in the opposite rotation direction &, but the weekly star gear (5) is rotated by the internal teeth of the ring gear (17). Because of the meshing, when the hydraulic motor (E) is stopped, the pinio provided on the output shaft (2) of the hydraulic motor 01 becomes a pawl and the ring gear αη is not rotated. The gear (5) is rotated as a whole in the O direction. The planetary gear (5) is attached to a hollow shaft (attached to each 31 (6) with a pin (4) so as to be rotatable), which is integrally connected to the winding drum (1). (5) is C as a whole
When rotating in one direction, the winding drum (1) is also rotated in the same direction F as the CI force direction, and the load is wound up.

When moving from hoisting operation to hoisting/lowering operation, switch the drive device Q31 and turn the sprocket (II) and power shaft (
9) and gear α0) are rotated in the opposite direction of rotation. Then, as shown in Fig. 2 (B), each planetary gear (5) is rotated in direction B, and at the same time, the entire planetary gear is rotated in direction q, so that the winding drum (1) is also rotated in one direction F2. Rotated 1. The baggage is unloaded. At this time, the power shaft (
When the hydraulic pump a9 connected to 9) is operated, pressure oil is supplied to the hydraulic motor Qp, the output shaft (a) of the hydraulic motor Q1) is rotated, and the pinion blade provided on the output shaft is rotated. . If the hydraulic pump a9 is operated so that the output shaft and the pinion (E) rotate in the input direction, the ring-shaped gear (17 ) is rotated in the direction, the overall rotational speed of each planetary gear (5) in the six directions is accelerated by the rotational speed of the ring gear 0η in the horizontal direction, and the winding drum (1 ) is also accelerated in the F2 direction, and the lowering speed increases. On the other hand, if the hydraulic pump a is operated so that the output shaft and pinion (c) rotate in the direction, the ring-shaped gear αη rotates in the direction, and as a result, each gear (5) rotates in the direction. The overall rotational speed is the ring gear αη.

As the rotational speed in the F2 direction is decelerated, the rotation of the winding drum (1) in the F2 direction is also decelerated, and the winding down speed becomes smaller.

At the time of hoisting, the hoisting speed can be steplessly increased or decreased by operating the hydraulic pump aω and the hydraulic motor (c).

The rotation speed of each hydraulic motor Q◇ is adjusted by the hydraulic pump Q5.
This is done steplessly by changing the tilt angle of the swash plate 1 to change the amount of pressure oil discharged. The tilt angle is controlled manually or by remote control. Further, the hydraulic motor 21) is reversed by controlling the tilt angle of the hydraulic pump αQ,
It is also possible to reverse the winding drum (1) without switching the drive device (13).

In this way, when performing hoisting and lowering operations, the hoisting is performed by controlling the flow rate and flow direction of the pressure oil sent from the hydraulic pump Q51 connected to the power shaft (9) to the hydraulic motor Q1). The winding drum (1) can also be started and stopped, and the winding drum (1) can be operated steplessly at any desired speed, such as slowing down or speeding up the winding down speed.

It should be noted that the winch of the present invention is not limited to the above-mentioned embodiments, and may include using a power transmission device such as a gear or a pulley instead of a sprocket, or using four planetary gears and four hydraulic motors. It goes without saying that various changes can be made without departing from the gist of the present invention, such as that any number of cylinders may be used without limitation.

As described above, according to the winch of the present invention, I) transmits the rotational force of the power shaft to the winding drum via the planetary gear device having a ring-shaped rotation; The rotational speed of the take-up drum is controlled by a hydraulic motor driven by a hydraulic pump as a power source.
The hoisting speed and hoisting speed can be arbitrarily changed, preventing damage to cargo and accidents, and improving work safety.

It) The rotational speed of the winding drum is mechanically controlled by a ring gear, a pinion, a planetary gear, and a sun gear, so that the operation is reliable.

■) The rotation of the pinion can be controlled steplessly by operating the hydraulic pump driven by the power shaft, as the direction and flow rate of the pressure oil sent to the hydraulic motor can be continuously changed. Possible d) Since the planetary gear system and the hydraulic system are integrated and take advantage of the advantages of both, the system is closed and is efficient with little energy loss.

(2) Since the planetary gear system and the hydraulic system are integrated, the system is simpler and the manufacturing cost is lower than conventional all-mechanical or all-hydraulic systems.

etc., exhibits various excellent effects.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of an embodiment of the winch of the present invention, and Figure 2 (
(a) and (b) are views taken in the direction of the arrow in the direction of the arrow in FIG. 1, and FIG. 2 (a) and FIG. , In the figure, (1) is the winding drum, (2) (31 (6) is the hollow shaft, (4) is the bottle, (5) is the planetary gear, (8)
81as ai- is a bearing, (9) is a power shaft, 0 [is a sun gear, Q5) is a hydraulic pump, 07) is a ring gear, α
9 is the casing, Q is the hydraulic motor, 翺 is the pinion, (
C) indicates a fixed rod.

Claims (1)

[Claims] 1) A power shaft connected to a drive device passes through the hollow shaft of the winding drum rotatably supported by a bearing, and a sun gear is installed at a predetermined position on the power shaft, and a plurality of sun gears are installed so as to mesh with the sun gear. planetary gears are rotatably attached to the hollow shaft, a ring-shaped gear having teeth on the inner and outer peripheries is provided to surround the planetary gears, its internal teeth are meshed with the planetary gears, and the ring gears are connected to the power shaft. 1. A winch comprising: a hydraulic pump driven by the hydraulic pump; and a pinion provided on the output shaft of a hydraulic motor driven by pressure oil from the hydraulic pump and meshed with the external teeth of the ring-shaped gear.