JPH0622710Y2 - Farm work cart - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a self-propelled cart for agricultural work, which is particularly suitable for orchard management.

(Prior art and problems) For example, taking an apple orchard work as an example, the work has some differences depending on the variety composition, cultivation system, etc., but pruning work, pollination, flowering, bagging, removal A high proportion of high-altitude work such as bags and harvest adjustments, according to statistics,
Of all the work in apple cultivation, high-altitude work accounts for
It has been reported to reach close to 90%. Moreover, these works are concentrated in the two seasons of spring and autumn, and the agricultural work is forced in a short period of time, which causes considerable heavy labor. These aerial work is mainly carried out using a stepladder, and from its work characteristics, with the excessive fatigue of the upper body including the shoulders and arms, and the work on the stepladder placed on a sloping ground, etc. There is a risk of falling or falling. In addition, in recent years, it has become difficult to obtain a high-quality work force in the agricultural season, and the work by the conventional stepladder further promotes the decrease of work efficiency and the above-mentioned danger.

(Purpose of the Invention) In view of such a situation, the present invention is a self-propelled type that is useful for improving the efficiency of agricultural work such as orchard, which is often carried out at high places, and has excellent work safety and functionality. The purpose of the present invention is to provide a work trolley.

(Structure of the Invention) The agricultural work trolley of the present invention which achieves such an object is an outer work pedestal placed on a self-propelled vehicle, and an opening provided on the upper surface of the outer work pedestal, and the hydraulic work It has an inner workbench supported on the self-propelled vehicle through a pantograph mechanism that can be vertically expanded and contracted by a cylinder, and this inner workbench extends downward from the lower part to the outer workbench. The projecting outer workbench support is provided so as to operate integrally with the inner workbench, and the inner workbench and the outer workbench are in the same plane by controlling the reciprocating movement of the hydraulic cylinder. It is desired that the workbench is projected above the plane of the outer workbench, or that the outer workbench is pulled up from the self-propelled vehicle and lifted up and stopped while maintaining such a protruding state. So that you can choose It is configured in. Hereinafter, embodiments will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of a work carriage according to the present invention,
The work vehicle 100 of the present application includes a self-propelled vehicle 1, an outer work table 3 placed on the self-propelled vehicle 1, and an inner side that loosely fits into an opening 31 that is opened in a rectangular shape on the upper surface of the outer work table. Work table 5
And a pantograph mechanism 7 for supporting the inner workbench 5 on the self-propelled vehicle 1 so as to be able to flex and extend in the vertical direction. The self-propelled vehicle 1 has drive wheels 12 near the center of the body frame 11 and free wheels 13 at the rear of the body frame 11.
It is driven by a steering wheel 14 fixed near the steering wheel. An engine box 15 is provided next to the steering handle 14, and the output of the engine 16 is output from the output sprocket 17a of the transmission 17 to the chain 1 as shown in FIG.
It is transmitted to the axle 12a of the drive wheel 12 via 7b.

On the other hand, the engine output is also transmitted to the drive pulley 18a of the hydraulic pump 18 adjacent to the engine 16 in the engine box 15. The shift box operates the shift lever 19a together with the clutch lever 20a. 19b is a flexible wire connecting to the transmission, and 20b is a brake lever.

Around the vehicle body frame 11, except for the engine box 15, a standing plate 21 which is shorter than the upper surface of the engine box is erected.
Is projected. The box-shaped outer working table 3 having a missing bottom surface is placed on the projecting edge 22 with the lower ends of the side plates 32, 33 in contact with each other. As described above, the rectangular opening 31 provided in the outer workbench 3a has the opening 31
A box-shaped inner working table 5 with a bottom surface is loosely fitted so as to be vertically movable with a slight gap. The inner workbench 5 has an outer workbench support portion 52 formed of a protruding piece laterally protruding outward from the lower end of the side plate 51, and
A handrail frame 54 is erected on the inner workbench surface 5a.

Such an inner workbench 5 has a body frame 11 facing the inside.
Fixed shafts 71 and 72 (Fig. 2) fixed to a and 11a and side plates 53 and 53 (see Fig. 3) of the inner working table 5 facing each other.
A pair of guide frames 73, 73; 74, 74 having U-shaped cross sections, which are provided on the opposing body frames 11a, 11a and the opposing side plates 53, 53, respectively, and are rotatably accommodated in the bearing rollers 75. ,
It is supported on the body frame 11 so as to be vertically movable by a pantograph mechanism 7 having moving shafts 77 and 78 supported by 75; Reference numeral 25 denotes a one-rod-type return hydraulic cylinder that reciprocates the moving shaft 78 along the guide frame 74, and hydraulic oil is supplied through the hydraulic pump 18 and a spring center type directional control valve 21 attached thereto. It The direction switching valve 21 can be switched by either a manual switching lever 22 or a solenoid switching mechanism 24, 24 operated by a remote control switch 23 provided on the steering handle 14.

As shown in FIG. 3, the pantograph mechanism 7 has a central shaft 81,
It consists of three sets of opposed cross links which are respectively supported by 82 and 83, and connecting cross shafts 84-87 which connect upper cross links with lower cross links sandwiched from both sides. However, the cross links 88, 88 at the lowermost portion are each slightly extended upward, and a caster-like rocking prevention member 80 is provided at the tip thereof. The rocking preventive members 80, ... Abut on the inner surfaces of the left and right side plates 33, 33 of the outer workbench 3 to prevent the outer workbench 3 from rolling and guide the up / down movement. 6 is on the left and right sides of the body frame 11
With a hydraulic jack attached to a place,
It is provided to keep the work surface horizontal. In addition, 8 is a folding type foot hanging edge attached to the side plate of the outer workbench 3,
If unnecessary, they can be stacked parallel to the side plate. 8a
Is a support plate hinged to the back surface of the footrest 8.

As shown in FIG. 2, the work trolley of the present application having the above-described structure has an outer work bench surface 3a, an inner work bench surface 5a, and an upper surface 15a of the engine box 15 as shown in FIG. Is in a single plane, or the hydraulic cylinder 25 is operated by the remote control switch 23 provided on the handle so as to have an arbitrary length within the range from the inner workbench surface 5a to the outer workbench support 52. The inner working table is projected by the pantograph mechanism 7 in a state in which the inner working table is projected from the outer working table 3a by the length, or while the supporting portion 52 is supported by abutting against the inner side of the outer working table surface 3a. As shown in FIG. 1, it is possible to arbitrarily select three states in which the outer workbench is lifted up to the far dead point of the stroke of the hydraulic cylinder 25 by moving it upward.

In the above-mentioned embodiment, the inner and outer work benches moved up and down by the single hydraulic cylinder and the pantograph mechanism interlocked therewith. However, as shown in FIG. The same object can be achieved by moving up and down by separate hydraulic cylinders 93, 94 and mounting the inner working table 91 on the frame 95 of the outer working table via the pantograph mechanism 96.

(Effect) The work trolley of the present application, as shown in FIG. 2, has a wide work space by flatly arranging the work benches, and the height can be freely adjusted in the vertical direction. It can handle various kinds of fruit trees of different sizes and shapes, such as being able to work both in the dwarfing garden and in a wide working range, making it easy to work.
For example, as shown in FIG. 1, if the inner work table and the outer work table are set to the highest position, it is possible to perform a considerable work at a high place, and the inner work table and the outer work table have a stepped shape. do it,
Since it is possible to work in a comfortable posture, such as sitting on a high place, work efficiency is improved, and elderly people and women can safely work at high places and there is little fatigue.

Further, by using the hydraulic jack, the same excellent effect as above can be exhibited even on a sloping ground.

[Brief description of drawings]

FIG. 1 is a perspective view of an agricultural work cart according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a state in which the respective worktables of the agricultural work truck shown in FIG. 1 are flatly aligned. Figure 3 shows
It is explanatory drawing which shows the pantograph mechanism part of the agricultural work trolley shown in FIG. FIG. 4 is a conceptual view showing another agricultural work trolley of the present invention.

Claims (2)

[Scope of utility model registration request] 1. An outer workbench mounted on a self-propelled vehicle, and a pantograph mechanism which is loosely fitted in an opening provided in the outer workbench surface and which is vertically bendable by a hydraulic cylinder. An inner working platform supported on the self-propelled vehicle, and the inner working platform is provided with an outer working platform support portion projecting downward from the lower part of the outer working platform. By operating the hydraulic cylinder, the outer work table and the inner work table are flush with each other, the inner work table is projected upward from the outer work table surface, and the outer work table is supported by the outer work table support portion. An agricultural work trolley characterized by being configured so as to be capable of taking three states, that is, a state in which the outer work platform is lifted upward while the projecting state is maintained by pushing the platform upward. 2. A farm work cart according to claim 1, wherein the left and right sides of the self-propelled vehicle each have a pair of vehicle body posture maintaining hydraulic jacks.