JPH052549Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Purpose of invention] (Industrial application field) This invention relates to a winch.

(Prior Art) Examples of this type of winch include those shown in FIGS. 3 and 4, for example.

3 and 4, to explain the structure first, a support frame 2 is provided at the front of the vehicle body 201.
03 is fixed, and a winch main body 205 is attached on the support frame 203. The winch body 205 includes a winch drum 209 around which a wire 207 is wound and a gear box 211. The winch drum 209 is rotatably mounted on a main shaft 213, and one end of the main shaft 213 is pivotally supported by a free running clutch 215. By operating the free-running clutch 215, the winch drum 209 and the main shaft 213 can be switched into a connected state or a disconnected state.

Further, a side PTO device, for example, for extracting power from the engine is connected to the transmission (not shown), and the other end of the drive shaft, which has one end connected to the side PTO device, faces into the gearbox 211. The driveshaft can be rotated forward or forward by operating the control lever inside the vehicle.
It is possible to switch to reverse or neutral state.

The other end of this driveshaft is gearbox 2
11 is formed into a worm, while the end of the main shaft 213 is formed into a worm wheel that meshes with this worm, thereby forming a worm gear.

(Problem that the invention attempts to solve) By the way, in such a device, the side
The PTO device, drive shaft, gear box 111, etc. function only to operate the winch, which outputs power at low speed and high torque. Therefore, this device cannot be used, for example, as a high-speed, low-torque power source, and its uses, such as towing a broken down vehicle, are limited to some extent.

This invention was made in view of the above-mentioned problems, and can expand its uses by utilizing the power transmitted to the mechanical winch.

Moreover, it is an object of the present invention to provide a winch in which each switching operation between the winch main body and the output section can be performed by one switching means.

[Structure of the invention] (Means for solving the problem) In order to achieve the above object, this invention includes a drive shaft that receives rotational input, and a drive shaft that is connected to the drive shaft by a first connecting means and receives the power of the engine. an output section that outputs to the outside; a first arm that engages with the first coupling means; a main shaft that is rotatably driven by the drive shaft via a power transmission means; a winch drum which is connected and rotates and has a wire wound thereon; a second winch drum which is connected to the second connecting means;
arm, and a switching means that engages with one or both of the first and second arms by a moving operation to switch between coupling and disconnection of the first and second coupling means.

(Function) In the above configuration, the rotation input to the drive shaft is transmitted from the drive shaft to the output section via the first connection means and the power transmission means and the second
is transmitted to the winch drum via the connecting means of the drum and provided for each use. Since the switching means is operated to move and engage with one or both of the first and second arms, the first and second connecting means are operated via the engaged arms, and the winch is switched depending on the purpose. The drum and the output section can be switched separately or simultaneously.

(Embodiment) A winch 1 according to an embodiment of this invention will be explained with reference to FIGS. 1 and 2.

First, to explain the configuration, the third
A support frame 3 is fixed to the front part of the vehicle body similar to that shown in FIGS.

The winch body 7 includes a cylindrical winch drum 13
and a gearbox 15. A wire 17 having one end fixed is wound around the winch drum 13, and a hook 19 is attached to the other end of the wire 17. A hook support member 21 is fixed to the support frame 3 with bolts 23, and the hook 19 is locked to the hook support member 21 when stored.

Note that the roller 25 is a rotatable roller,
This contributes to smooth feeding or winding of the wire 17 in any direction.

The winch drum 13 is the main shaft
The main shaft 27 is rotatably mounted on the main shaft 27.
One end is pivotally supported by the support member 29 of the winch body 7 via a bearing 31, and the other end faces into the gearbox 15.

Inside the gearbox 15, the main shaft 2
A worm wheel 33 is fitted to the end of the shaft 7, and a worm 37 formed on a drive shaft 35 meshes with the worm wheel 33. Thereby, the worm gear is formed as a power transmission means.

One end (lower end in FIG. 1) of the drive shaft 35 is connected to a side PTO device (not shown).
The side PTO device is connected to a counter gear (3rd speed) of the transmission, and the drive shaft 35 can be switched to forward rotation, reverse rotation, or neutral state by operating a control lever inside the vehicle interior.

One end of an output shaft 39 is opposed to the other end of the drive shaft 35 (the upper end in FIG. 1). The middle part of the output shaft 39 is attached to the support frame 3 with a bolt 4.
The output shaft 39 is rotatably supported by a bearing 43 fixed to the output shaft 39, and a pulley 45 serving as an output section is connected to the other end of the output shaft 39. The coupling sleeve 47 is a ring-shaped coupling member having a spline 49 on its inner peripheral surface. Also, drive shaft 3
Splines 51 and 53 that can engage with the splines 49 of the coupling sleeve 47 are provided on the outer peripheries of the opposing ends of the output shaft 5 and the output shaft 39 . Therefore, by moving the coupling sleeve 47 in the axial direction, the spline 49 and the spline 51,
53, the drive shaft 35 and output shaft 39 can be connected or disconnected. In FIG. 1, the coupling sleeve 47
is engaged only with the spline 53, so in this state the connection between the drive shaft 35 and the output shaft 39 is released. In this way, the coupling sleeve 47 and the splines 49, 51, 53 constitute a first coupling means. Further, a groove 55 is provided on the outer circumferential surface of the coupling sleeve 47, and a groove 55 is provided at the tip of the fork of the first arm 57 for output shaft switching, which has a fork shown in broken lines in FIG. The two protrusions 59 are rotatably engaged.

The coupling sleeve 61, like the coupling sleeve 47, is a ring-shaped coupling member having splines 63 on its inner peripheral surface. Further, a large diameter portion is provided between the winch drum 13 and the gear box 15 on the outer periphery of the main shaft 27, and this large diameter portion and the winch drum 13 opposite thereto,
Splines 65 and 67 are provided on the outer periphery of each end. Therefore, the coupling sleeve 6
1 in the axial direction to engage and disengage the spline 63 and the splines 65, 67, the winch drum 13 and the main shaft 27 can be connected or disconnected. In FIG. 1, the coupling sleeve 61 is engaged only with the spline 65, so in this state the connection between the winch drum 13 and the main shaft 27 is released.
In this way, the coupling sleeve 61 and the splines 63, 65, 67 constitute a second coupling means. Further, a groove 69 is provided on the outer peripheral surface of the coupling sleeve 61, and this groove 69 has a second
Two protrusions 73 provided at the tips of the forks of a second winch switching arm 71 having a fork shown in the figure are rotatably engaged.

The coupling sleeves 47 and 61 each have an arm 5.
As will be described later, switching is performed by a lever 75 via 7 and 71. As shown in FIG. 2, this lever 75 has a bearing member 7 at its shaft 77.
9 and is slidably and rotatably supported. The bearing member 79 is fixed to the support frame 3 with bolts 41, as shown in FIG.
The arms 57, 71 are held by a stopper ring 83 within the bearing member 79 while maintaining a predetermined distance from each other by a sleeve 81 interposed at their bases.
The tip of the shaft portion 77 of the lever 75 passes through a through hole provided at the base of each of the arms 57 and 71.
7 and 71 are swingable around a shaft 77. or,
A spline 8 is provided in each through hole of the arms 57 and 71.
5 and 87 are provided, and the shaft portion 7 of the lever 75
7 is provided with a spline 89 that can engage with these splines 85 and 87. The spline 89 can be engaged with one or both of the splines 85 and 87 by sliding the lever 75 up and down, and the lever 75 can thus engage one or both of the arms 57 and 71. Can be connected. In FIG. 2, spline 89 is engaged with both splines 85 and 87, so lever 75 is connected to both arms 57 and 71.

A detent device 97 consisting of a check ball 91, a check spring 93, and a plug 95 is attached to the bearing member 79, and the shaft portion 77 of the lever 75 has three grooves 9 in which the check balls engage.
9, 101, and 103 are provided. The groove 99 is located at the position where the lever 75 is connected only to the arm 71 (position A), and the groove 101 is located at the position where the lever 75 is connected to both the arm 57 and the arm 71 (position A), as shown in FIG. In B), the grooves 103 are each provided at a position where the lever 75 is connected only with the arm 57 (position C). In this way, the detent device 97 moves the lever 75 into each groove 99, 101,
103 is positioned at three positions A, B, and C where it engages with the check ball 91.

If the lever 75 is moved to position B by sliding it until it engages with the groove 101 and the check ball 91 as shown in FIG.
is connected to both arm 57 and arm 71. In this state, if the lever 75 is turned in the direction of arrow A in FIG.
9 are connected, and the coupling sleeve 61 moves via the arm 71 to connect the winch drum 13 and the main shaft 27. Next, lever 7
5 in the direction of arrow B, the coupling sleeves 47 and 61 move in the opposite direction via the arms 57 and 71, and the coupling between the drive shaft 35 and the output shaft 39 and between the winch drum 13 and the main shaft 27 is released. Ru.

When the lever 75 is pulled up until the groove 99 engages with the check ball 91 to position A, the lever 75 is connected only to the arm 71. In this state, by operating the lever 75 in the direction of the arrow A or the direction of the arrow B, only the connection and disconnection between the winch drum 13 and the main shaft 27 can be switched.

If the lever 75 is pushed down until the groove 103 engages with the check ball 91 to position C,
Lever 75 is connected only to arm 57. In this state, by operating the lever 75 in the direction of the arrow A or the direction of the arrow B, only the connection and disconnection between the drive shaft 35 and the output shaft 39 can be switched.
In addition, the arms 57 and 71 each have two holes on the outer periphery of the base, and a daytent device (not shown) allows
The arms 57, 71 are positioned in the connecting and uncoupling positions. In this way, the lever 75 and the arms 57, 71 constitute a switching means.

Next, to explain its function, by operating the control lever inside the vehicle, engine power is extracted from the PTO device via the transmission.

Here, if the lever 75 is set to position A and turned in the direction of arrow A, the engine power from the PTO device is transmitted to the winch drum 13 via the drive shaft 35, worms 33, 37, main shaft 27, and coupling sleeve 61. It functions as a winch with high torque at low speeds. Therefore, for example, it is possible to tow heavy objects or pull up your vehicle from mud. If the lever 75 is turned in the direction of arrow B, the winch drum 13 will rotate freely.
The wire 17 can be easily pulled out by input.

When lever 75 is placed in position C and turned in the direction of arrow A, engine power from the PTO device is transmitted directly from drive shaft 35 to output shaft 39 through coupling sleeve 47 without being reduced. Therefore, by wrapping a belt around the pulley 45, this output section can be used as a power source for, for example, agricultural or civil engineering purposes. By turning the lever 75 in the direction of arrow B, the power output from the output section can be stopped.

Furthermore, by setting the lever 75 to position B, each power transmission in positions A and C can be switched at the same time.

In this way, by switching only the lever 75, it is possible to selectively switch between the winch main body 7 and the output section, or switch both at the same time, resulting in extremely good operability.

Note that the output from the pulley 45 may be decelerated to some extent. In that case, it can be used as a sub winch.

Further, the output section is not limited to a pulley, and for example, a flange or the like may be used. A power generation device or the like may be attached to the output shaft 39 via this flange or directly to the output shaft 39. An electric motor can also be used for input to the winch.

[Effects of the invention] The winch of this invention has extremely high operability because it can selectively switch between the winch main body and the output section or both at the same time using one switching means. Are better.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional plan view of the lower half and main parts of an embodiment, FIG. 2 is a partial cross-sectional view centered on the switching means, and FIG. 3 is a side view of a vehicle equipped with a conventional winch. FIG. 4 is a perspective view of a conventional example. 7... Winch body, 13... Winch drum, 17... Wire, 27... Main shaft (main shaft), 33, 37... Worm gear (power transmission means), 35... Drive shaft (drive shaft), 3
9...Output shaft, 45...Pulley (output part), 47
...Coupling sleeve, 57... (first)
Arm, 61...Cut spring sleeve, 71...
(Second) arm, 75... lever, 97... day tent device.

Claims (1)

[Scope of utility model registration request] A drive shaft that receives rotational input, an output section that is connected to the drive shaft by a first connection means and outputs power to the outside, a first arm that engages with the first connection means, and a power transmission means. a main shaft that is rotatably driven by the drive shaft through the main shaft; a winch drum connected to the main shaft by a second connecting means to rotate and wind a wire; and a second arm that engages with the second connecting means. and a switching means that engages one or both of the first and second arms by a moving operation to switch between coupling and disconnection of the first and second coupling means. .