JPS60183498A - Rope 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 [Uses of the Invention] The present invention relates to a lobe winch suitable for use as a winch for elevating the boom of crawler cranes, pile drivers, etc., for example.

[Prior art]

In general, a lobe winch has a drum with lobes wound around a winding drum, a drive motor such as a hydraulic motor, and a drum drive device consisting of a speed reducer, and the rotational output of the drive motor is The drum is decelerated through a speed reducer and driven 101 times. The above-mentioned lobe winch equipped with a reduction gear made of a planetary gear mechanism as a drum drive device is known, for example, as disclosed in Japanese Patent Application Laid-Open No. 52-88953 (hereinafter referred to as prior art).

- The lobe winch according to the prior art described in F includes a T14 drum rotatably supported on a support frame, and a m of the drum.
an exterior cover fixed to the support frame; a drum rotation motor attached to the exterior cover; a coaxial cylindrical motor disposed within the drum and rotatably supported by the exterior cover; gear casing members,
A gear consisting of the gear casing member and an exterior cover.
a planetary gear reduction device that is housed in the casing and reduces the rotational output from the drive motor in two stages to decelerate and rotate the gear/casing member; and a flange-shaped inner side that protrudes radially inward from the inner wall of the drum. a ring, a flange-shaped outer ring projecting radially outward from the outer wall of the gear casing member, and a connecting member for identifying the inner ring and the outer ring; t' to be transmitted to the drum via the outer ring, the connecting member and the inner 11111 ring.

However, the rope winch according to the prior art mentioned above,
It has the following drawbacks:

The drum and the gear φ casing member are provided in a coaxial cylindrical shape, and the drum 11+1 is provided with an inner ring that protrudes radially inward, and the gear Q casing part has a radially outer ring on which side. By providing a protruding outer ring and fixing it with a connecting member, the reduced rotation of the gear casing member is transmitted to the drum. Therefore, since a large space is required between the first K drum and the gear casing member, the drum has a large diameter, and if the input torque from the drive motor is the same, The disadvantage is that the rope traction force (line burka) required to pull the rope is smaller than those with a smaller diameter. Secondly, since the diameter of the winding barrel of the drum increases, the weight of the drum increases and the overall size of the rope winch also increases. Third, connecting members such as an outer ring, an inner ring, and bolts are required to fix the drum and the gear casing member, which requires a large number of parts and reduces workability.
The disadvantage is that it is less easy to assemble.

[Purpose of the invention]

The present invention has been made in view of the shortcomings of the prior art as described above, and by making it possible to reduce the diameter of the winding drum, the rope pulling force for the same human torque is increased. The object of the present invention is to provide a rope winch that can be used in a variety of ways.

[Structure of the invention]

In order to achieve the above object, the feature of the configuration adopted by the present invention is that the diameter of the drum is reduced by providing an internal gear that constitutes a part of the planetary gear reduction device on the inside surface of the drum. It is in.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the 1-zoi plane.

In the drawings, reference numeral 1 indicates a support frame, and legs IA and IB are erected on both sides of the support frame 1. A cylindrical first attachment part +A2 is attached to one leg IA via a bolt 3. A thin plate-shaped second additional member 4 is fixed to the other part 11111 IB via a bolt 5. 6 is a hydraulic motor as a drive motor, and the hydraulic motor 6 is connected to a bolt 7'? It is fixed to the @11 surface of the first mounting member 2 via the first mounting member 2. And, the output 11116A of the hydraulic motor 1 is provided to protrude into the first mounting member 2.

8 is the above-mentioned No. 1. A drum for winding a rope is shown, which is disposed between the second attachment members 2 and 4, and the drum 8 includes a cylindrical winding drum 8A and a peripheral wall formed in the radial direction at both ends of the winding drum 8A. It consists of parts 8B and 8C. 9 is the drum 8
A cover part to cover the right side of the unit in an oil-tight manner.
The cover member 9 is attached to the right side surface of the drum 8 via bolts (5). 10 indicates the first mounting member 2 and the drum 8.
11 is the second mounting member 4.
and the cover member 9, and the assembly of the drum 8 and the cover member 9 is connected to the first drum 8 and the cover member 9 via the respective bearings 10 and 11. It is rotatably supported on a second mounting member 2.4.

12 is an internal gear formed on the inner surface of the drum 8A of the drum 8 and located on the cover member 9 side; 13 is the internal gear formed on the inner surface of the drum 8A;
a planetary gear reduction device disposed within the internal gear 12;
constitutes a part of the planetary gear reduction device 13. and,
The output rotation from the output shaft 6A of the hydraulic motor 6 is reduced by a predetermined reduction ratio by the planetary gear reduction device 13, and the internal gear 1
2 so that the drum 8 can be directly rotated at a reduced speed.

Here, the planetary gear reduction device 13 has a two-stage stray inner shaft 6.
(6) A spline shaft 14, the other end of which extends along the axis of the drum 8 toward the cover member 9; a first sun stop 15 with a diameter r+, and a first sun stop 15 disposed around the diameter 1111# 15 so as to mesh with the sun gear 15 and the internal gear 12 of the drum 8; Yusei 1'! 'lN, 16.

When the first thick gear 15 rotates through the spline shaft 14 due to the stiffness, the first planetary gear 16 meshes with the inner elliptical gear 12 and rotates, and rotates around the thick gear N15. is made to revolve. The first 1W star gear 16 is rotatably supported by a bin 17, and a movable carrier 18 is fixedly provided to the bin 17. As a result, the first
Only the revolution of the planetary wheel 16 is transmitted to the carrier 18,
A first stage of deceleration is performed.

On the other hand, the second stage planetary gear reduction stage 13B is loosely fitted onto the spline shaft 14 and meshes with the movable carrier 18, so that only the revolution of the first planetary gear 16 is transmitted to the second sun gear 1.
9, the sun gear 19 and the inner m gear 12 of the drum 8 mesh with each other (or a plurality of second planetary gears 20 provided around the sun gear 19, and the planetary gears 20 can be freely rotated). It is composed of a support bin 21 and a fixed carrier 23 fixed to the right end surface of the first support member 2 via a port 22 for attaching the bin 21.

When the second sun gear 19 is rotated by the movable carrier 18 by kneading, the planetary gear 20 of vJ2 meshes with the sun gear 19 and the internal gear 12 of the drum 8,
It rotates on its own axis. However, the second planetary tooth i20 is in the bin 21.
Since the position of the fixed carrier 23 in the circumferential direction (that is, the direction of revolution) is determined through the rotation of the planetary gear 20, the drum 8 revolves around the planetary gear 20, and Deceleration takes place.

Next, 24 is a multi-plate brake device located and provided within the first mounting member 2, and the brake device 24 is spline-coupled to the spline plate 14 in multiple stages, and the multi-plate brake plates 25, 25 . . . . and brake plates 26, 26, .
26 is disposed at the mating point, and by moving these 1 toward and away from each other, braking and braking can be performed.

Further, 27 is located on the right end side of the brake plate 26.

a stopper provided on the right end side of the first mounting member 2;
Reference numeral 8 indicates a third Tsukuda spring located at the left end side pressure position of the brake plate 26, and the brake plates 25 and 26 are held between the stopper 27 and the piston 28 by the disc flap 29 to provide a braking action, and the spline shaft 14 and the first sun gear 15 integrated therewith are stopped from rotating.

Furthermore, a spacer 31 is provided between the piston 28 and the inner circumferential surface of the first mounting member 2, and is in contact with the left end surface of the two splines to restrict displacement to the right in the figure.
is the spacer 30. an annular hydraulic pressure chamber defined by the piston 28 and the inner peripheral surface of the first mounting member 2;
Reference numeral 2 designates an oil passage that is bored in the casing of the hydraulic motor 6 and introduces external liquid (9) pressure into the hydraulic pressure chamber 31. 31, the piston 28 is displaced to the left in the figure against the disc spring 29, and the braking by the brake plates 25, 26 can be released.

Therefore, in this embodiment, the multi-disc brake device 24 is
? Boards 25, 26. stopper 27, piston 28, irr
It is configured as a negative brake device consisting of a positive spring 29, a hydraulic chamber 31, and an oil passage 32.

Furthermore, a rope 33 is wound around the winding trunk 8A of the drum 8, and the proximal end of the lobe 33 is inserted into a tapered hole 34 drilled in the winding trunk 8A, and is tied up by a rope 35. 4.

In the figure, the reference numeral 36 indicates an engagement claw formed on the end surface of the wall portion 8B of the drum 8, and the reference numeral 37 indicates a support area.
6 shows a locking device consisting of a ratchet or the like that locks the drum 8 by engaging with the drum 8. Further, 38 is a seal member for preventing the lubricant Y in the drum 8 from leaking, and the seal member 38 is connected to the mounting member 2 of 11 located on the outside g+ of the Tsukuda receiver 10. ^C is installed at ++1+ with drum 8.

Although this embodiment has deteriorated as described above,
The rope 33 wrapped around the drum 8 has its tip 1111
For example, the drum 8 is connected to the boom of a crawler crane.
By rotating the rope 33 4 times, the rope 33 is wrapped around the drum 8 and the rope 33 is twisted around the drum 8, and while the rope 33 is turned around the drum 8,
It is used to cause lfI+.

However, in order to operate the rope winch according to the 11th example, Honjime first needs to first use the 1st series dowel 36 to lock the drum 8.
and the lock device 37 are disengaged.

Next, $11110i (i
In order to release and release, hydraulic pressure is supplied from the oil passage 32 to the powder pressure chamber 31, and the piston 28 is moved to the left in the figure against the In spring 25), and the brake M is released. do. In this state, when the hydraulic motor 6 is driven and its output shaft 6A is moved once, the rotation is caused by the spline shaft 14 and the first sun block 1.
5. The first planetary gear reduction stage 13A consisting of the first planetary wheel 16 and the circular W gear 1241 reduces the falling speed l-1 at the reduction ratio of the first planetary wheel 16. Only 0T
The signal is transmitted to the trI'l carrier 18. On the other hand, since the movable carrier 18 is meshed with the second sun gear 119 loosely fitted on the spline shaft 14, the rotation from the movable carrier 18 is caused by the second sun gear 19, second planet gear 20,
The speed is reduced again at a predetermined reduction ratio by the second planetary gear reduction stage 13B, which is composed of the fixed carrier 23, the internal gear 12, etc.
It revolves around 0. As a result, the rotation of the hydraulic motor 6 is transmitted from its output shaft 6A to the drum 8 via the multi-stage planetary gear reduction device 13, and the rope 33 is wound or rewound.

In this embodiment, an internal gear 12 is formed on the inner periphery side of the drum section 8A of the drum 8.
stage, second stage planetary gear reduction stage 13A.

13B, the outer diameter of the winding trunk 8A can be made smaller than that of the prior art described above. Therefore, when the output torque of the hydraulic motor 6 is set to the same condition as that of the prior art, the lobe's traversing force can be increased by an amount corresponding to the smaller outer diameter of the winding drum 8A.

Further, since the inner # gear 12 can be provided in in-contact with the drum 8, the lobe winch can be made smaller and lighter in size by the reduction in the outer diameter of the drum 8. moreover,
Since the number of parts is reduced compared to the prior art, processability and assemblage are improved, and low INK manufacturing can be achieved.

In the above embodiment, the internal gear 12 was described as being formed directly on the inner circumferential side of the drum section 8A of the drum 8, but a separate internal gear was machined as a ring gear. The ring gear may be fixed to the inner peripheral side of the winding drum section 8A by means of bolts, welding, or the like.

Furthermore, in the embodiment, the planetary gear reduction gear 13 has been described as being composed of two planetary gear reduction stages 13A and 13B, but a planetary gear reduction gear unit having one or three stages may also be used. , j should be selected as necessary.

Furthermore, in the embodiment, a multi-disc brake device consisting of a negative brake is provided in the drum 8 (13), but this brake device is provided with a separate brake drum that is continuous with the drum 8, and the outer periphery of the brake drum is For example, the braking may be performed using a band brake device, a drum brake device, or the like, or a disk brake chain may be used in which a disk is formed as a part of the drum 8 and the disk is pressed by a pair of disk pads.

〔Effect of the invention〕

The lobe winch according to the present invention is as described in detail above, and since the internal gear is provided on the inner peripheral side of the drum,
The diameter of the winding drum of the drum can be made smaller than that of the conventional technology, which increases the rope pulling force, and has the effect of making it possible to manufacture a lobe winch that is small, lightweight, and has a small number of parts.

[Brief explanation of drawings]

The figure is a longitudinal sectional view showing an embodiment of the present invention. 1... Support frame, 2, 4... Mounting member, 6
... Hydraulic motor, 8... Drum, 8A... Winding drum section, 9... Cover member, 10.11... Bearing, 12.
...Internal gear, 13...Planetary gear reduction device, 13A.
... 1st stage planet (11) Pawl reduction 1 middle stage, 13 B... 2nd stage planetary gear reduction stage, 14... Spline tube, 15... ml sun gear, 16... 1st planet m■, 17, 21...pin,
18...Movable carrier, 19...Second Taiyo Steel Car,
20... Second planetary gear, 23... Fixed carrier,
24... Multi-plate brake device, 25, 26... Brake plate, 27... Stopper, 28... Piston, 29
... Disc plate, 30... Spacer, 31... Hydraulic pressure chamber, 32... Oil passage, 33... Lobe. Patent applicant Hitachi Construction Machinery Co., Ltd. Representative Patent Attorney Kazutoshi Hirose Naoki Nakamura (

Claims (1)

[Claims] A 7m lobe winding drum supported by a support frame, a drive motor for rotationally driving the drum, and a stage disposed within the drum for decelerating the output rotation of the drive motor and transmitting it to the drum. Alternatively, in a lobe winch equipped with a planetary gear reduction device consisting of a plurality of planetary gear reduction stages, the planet w is attached to the first eye 11 of the drum inner surface.
A lobe winch characterized by being provided with an internal gear that constitutes a part of a vehicle speed reduction device.