JPS5935657Y2 - Sliding device of working mechanism in working vehicle - Google Patents

Description

[Detailed description of the invention] This invention is a work vehicle equipped with a backhoe, such as a forklift, to power slide the backhoe or fork horizontally and to the side of the vehicle to increase the work range. It relates to a sliding device of a mechanism.

An example of a sliding device for a working mechanism in a conventional working vehicle is shown in Japanese Patent Publication No. 54-39644.

According to this sliding mechanism, the amount of movement of the slider is twice the stroke of the hydraulic cylinder device, and there is a problem that the amount of movement of the slider cannot be changed arbitrarily, especially more than twice.

This invention was made in view of the above-mentioned problems, and aims to solve the above-mentioned problems by providing a transmission member having a composite gear between the drive mechanism and the slider.

This invention will be explained below based on the drawings.

1, 2, 3, and 4 are diagrams showing an embodiment of this invention.

First, to explain the configuration, in FIG. 1 and FIG.
A is rotatably supported on a swivel table (not shown) installed on the workbench of the work vehicle.

Reference numeral 2 denotes a mounting plate to which, for example, a backhoe (not shown) is attached via several links, and sliders 3,
3 is provided.

This slider 3.3 is slidably supported by rails 5, 5 fixed to the upper and lower ends of a slider base plate 4 provided on the operating table 1.

A drive mechanism 6 as shown in FIG.
and a transmission member 7 are provided, and the transmission member 7 is interposed between the drive mechanism 6 and the slider 3.

Reference numeral 8 is a casing. The drive mechanism 6 can have various configurations, but the illustrated example uses a double-acting hydraulic cylinder device.

This hydraulic cylinder device 6 has piston rods 6a, 6a whose tips are fixed to the slider base plate 4 on both sides, and one cylinder chamber is supplied with pressure oil from a hydraulic source (not shown), so that the cylinder 6b is moved to the piston 6c. It is configured to be able to reciprocate using the piston rods 6a, 6a as guides.

The transmission member 7 includes a small-diameter pinion 7a and a large-diameter sprocket gear 7b, as shown in FIG. It is equipped with a composite gear that has a coaxial and integral gear.

In this composite gear, a pinion 7a meshes with a rack 7c attached to a cylinder 6, and a chain 7d is wound around a sprocket gear 7b.

This chain 7d further has a part that is wrapped around two induction sprocket gears 7e and 7f and is parallel to the rail 5, and is attached to the slider 3 and inserted into the casing through a slit 9 made in the casing 8 at a required location. It is connected to the engaging arm 7g that is inserted into the.

The above-mentioned composite gear is attached so as to be replaceable, the shaft 7h supporting the composite gear is also attached so that its position can be adjusted, and at least one of the induction gears 7e is also attached to the chain 7.
d can be wound, and furthermore, the winding is provided so that its position can be adjusted in order to generate tension.

Next, the effect will be explained.

Now, in FIG. 3, pressure oil from a hydraulic source (not shown) is made to flow into the cylinder chamber on the right side of the piston 6c.

Then, the cylinder 6b moves in the direction of arrow 11, so the rack 7C moves together with the cylinder 6b, causing the pinion 7a and sprocket 7b to rotate in the direction of arrow 12, and the sprocket 7b rotates the chain 7d in the direction of arrow 13. drive in the direction of.

Therefore, the chain 7d travels with a displacement twice as large as the stroke of the cylinder 6b in accordance with the diameter ratio of the sprocket and pinion, and the slider 3 connected to the chain 7d via the engagement arm 7g It will run on rail 5.

Therefore, in FIG. 1, the mounting plate 2 on which the working mechanism is attached is connected to the rail 5 through the upper and lower sliders 3, 3.
5 and will power slide in the horizontal and lateral directions.

When supplying pressure oil to the left cylinder chamber, the operation is performed in the completely opposite direction to that described above.

Therefore, the stroke of the slider 3 is a value obtained by multiplying the stroke of the hydraulic cylinder device by the diameter ratio of the sprocket 7b and the pinion 7a, and in order to change the stroke ratio of the slider 3 and the hydraulic cylinder device 6, it is necessary to use a compound gear. It is sufficient to change the diameter ratio of the sprocket 7b and the pinion 7a, and if the diameter ratio is twice or more, the stroke of the slider 3 can be made twice or more of the stroke of the hydraulic cylinder device.

To replace the composite gear, move the induction sprocket 7e to loosen the tension on the chain 7d and remove the composite gear.
Attach a composite gear with a different diameter ratio, and at this time sprocket 7b
When changing the pinion 7a as well as changing the pinion 7a with a different diameter, the position of the shaft 7h is adjusted so that the pinion 7a of the new diameter meshes with the rack 7c.

Note that this invention is not limited to the above-mentioned embodiment, but may be modified as follows.

In FIG. 3, induction sprockets 7e and 7f.

The chain 7d and the engaging arm 7g are removed, a rack (not shown) is attached to one side of the slider 3, the hydraulic cylinder device 6 is made much narrower than the distance shown in the drawing with respect to the slider 3, and there is a structure between the cylinder 6b and the slider 3. The gears are pivotally connected, and this composite gear has a structure in which the large-diameter gear meshes with a rack (not shown) attached to the slider 3 as a pinion instead of a sprocket gear.

As explained above, according to this invention, the structure is such that a slider is connected between the drive mechanism supported by the body of the work vehicle and the slider to which the work mechanism is attached and slidably supported by the body of the work vehicle. Since a composite gear in which a large-diameter gear that engages on the side and a small-diameter gear that engages on the drive side are coaxially integrated, the stroke of the slider is driven depending on the selection of the diameter ratio of the large-diameter gear and the small-diameter gear of the composite gear. It has the advantage that it can be enlarged to any number of times the stroke of the mechanism, and in particular it can be enlarged to more than twice the stroke of the mechanism.

[Brief explanation of drawings]

Fig. 1 is a side view of the main parts including the sliding device of the working mechanism of the working vehicle according to the embodiment of this invention, Fig. 2 is a partially enlarged view of the same as above, and Fig. 3 is an enlarged cross section taken along the line ■-■ in Fig. 2. Figures 4A and 4B are a vertical cross-sectional view and a front view showing an example of a composite gear that is a main component. 3...Slider, 6...Drive mechanism, 7
...Transmission member, 7a...Small diameter gear, 7
b...Large diameter gear.

Claims (1)

[Scope of utility model registration request] A drive mechanism supported on the body of the work vehicle; a slider to which the work mechanism is slidably supported on the body of the work vehicle; a transmission member that transmits the transmission to cause the slider to slide, and the transmission member includes a large diameter gear that causes the slider to slide, and a small diameter gear that engages with a drive mechanism and rotates integrally with the large diameter gear. A sliding device for a working mechanism in a working vehicle, characterized in that the stroke of the driving mechanism is arbitrarily multiplied and transmitted to the slider.