JPH08290899A - Elevating workbench installation device for working carriage - Google Patents

Abstract

PURPOSE: To comparatively easily carry out maintenance work such as inspection maintenance, repairing, etc., of each kind of mechanisms on the side of a mobile vehicle by changing and holding a workbench in a position to extend horizontally from an elevating cylindrical body and in a position to revolve and erect upward. CONSTITUTION: A normal workbench 3 is maintained by a positional change maintenance mechanism 4 by extending it in the horizontal or in the nearly horizontal direction from an elevating cylindrical body 2. Thereafter, the elevating cylindrical body 2 is elevated along a supporting cylindrical body 1, the workbench 3 installed on it is held at a desired height position, a worker boards the workbench 3 or a working seat 10 installed on it and carries out expected work. In the case of carrying out inspection maintenance, repairing, etc., of various kinds of mechanisms provided on a mobile vehicle A, the workbench 3 is revolved upward and erected and maintained in the same position by the positional change maintenance mechanism 4. Consequently, a wide space is secured between a body of the mobile vehicle A and the workbench 3, and maintenance can be easily carried out. Accordingly, it is possible to carry out work such as inspection maintenance, etc., even with a small and compact working carriage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled work cart constructed by mounting a work platform on an elevating cylinder which is elevated and lowered along a supporting cylinder that is erected on the body of a self-propelled vehicle. Specifically, it relates to a lifting workbench attachment device.

[0002]

2. Description of the Related Art A work trolley provided with an elevating work platform for a self-propelled vehicle in order to perform various operations such as pruning, fruit picking, and harvesting in a house or an orchard in a comfortable posture with less labor and time. Is being developed.

[0003]

By the way, this type of self-propelled work trolley needs to be able to operate with good maneuverability even in a narrow space such as a house where fruit trees are planted. Although it is configured, since it is small and compact, there is a tendency that the work table becomes an obstacle and it is not possible to easily perform work when inspecting, maintaining, and repairing various mechanisms on the self-propelled vehicle side, If the workbench is lowered and cannot be lifted, it will be extremely difficult to perform maintenance because the workbench must be repaired while the workbench is close to the self-propelled vehicle. There is a problem. Therefore, an object of the present invention is to make it possible to relatively easily perform maintenance work such as inspection and maintenance of various mechanisms on the side of the self-propelled vehicle, even though it is a self-propelled work cart configured to be small and compact. It was carried out as.

[0004]

In order to solve the above-mentioned problems, a lifting / lowering workbench mounting device for a working trolley according to the present invention comprises an elevating cylinder (2) and an elevating cylinder vertically with respect to the elevating cylinder (2). Posture change maintaining mechanism between the work table (3) and the work table (3)
(4) is provided so that the workbench (3) can be changed and held in a posture in which the workbench (3) extends from the elevating cylinder (2) in a horizontal or substantially horizontal direction, and a posture in which the workbench (3) is rotated upward.

Further, the posture change maintaining mechanism (4) is attached to a support seat (6) provided on the elevating cylinder (2) so as to be vertically rotatable by a sideways pivot shaft (7). ), A holding portion (8) that contacts the lifting cylinder (2) to maintain the work table (3) in a horizontal or substantially horizontal posture, and a work table that contacts the lifting cylinder (2) when standing up.
The work table (3) is provided with a stopper (9) for maintaining the upright posture, and the work table (3) is provided with a work seat (10) which can be turned around a vertical axis (Y). Is provided.

[0006]

In the work trolley in which the device of the present invention is implemented, normally, the work bench (3) is extended horizontally or substantially horizontally from the elevating cylinder (2) and is maintained by the posture change maintaining mechanism (4). The elevating cylinder (2) is moved up and down along the support cylinder (1), and the workbench (3) attached to it is held at a desired height position so that the worker can work on the workbench (3) or The desired work is performed by boarding the work seat (10) installed. When inspecting, servicing or repairing the various mechanisms installed in the self-propelled vehicle (A),
Rotate the workbench (3) upward to stand up and maintain the posture change
(4) If maintained in the same posture, a wide space is secured between the vehicle body of the self-propelled vehicle (A) and the workbench (3), and maintenance can be easily performed.

[0007]

According to the lifting workbench attachment device of the first aspect, the posture change maintaining mechanism (4) is provided between the lifting cylinder (2) and the workbench (3) which is vertically rotatable with respect thereto. Since the workbench (3) is installed so that it can be changed and held in a posture in which the workbench (3) extends horizontally or substantially horizontally from the elevating cylinder (2) and a posture in which the workbench (3) is rotated and erected upward, it is small and compact. Even in the case of the work trolley configured as described above, in the case of inspection and maintenance, a wide maintenance space can be secured between the vehicle body and the work bench, and the work such as inspection and maintenance can be easily performed.

According to a second aspect of the present invention, the lifting workbench mounting device is mounted on a support seat (6) provided on the lifting cylinder (2) on a mounting portion (5) which is vertically rotatable by a lateral pivot shaft (7). , A holding portion for contacting the elevating cylinder (2) to maintain the workbench (3) in a horizontal or substantially horizontal posture
A posture change maintaining mechanism (4) provided with (8) and a stopper (9) for contacting the elevating cylinder (2) when standing and maintaining the work table (3) in a standing posture. Since it has a simple structure and is easy to handle, it is possible to quickly change the posture of the workbench (3).

According to a third aspect of the present invention, a workbench (3) mounted on the elevating cylinder (2) so as to be vertically rotatable is provided with an attitude change maintaining mechanism (4) interposed between the elevating cylinder (2). ), And a workbench that is installed so that it can be held by changing it to a posture that extends horizontally or in a substantially horizontal direction from a).
Since the work seat (10) capable of turning around the vertical axis (Y) is provided in (3), the worker can work the work seat (10) as necessary.
You can turn around and sit on it to work efficiently in a comfortable position. Also, for maintenance, the work seat (10)
Since it can be turned upright about the vertical axis to stand up while avoiding interference with the elevating cylinder (2), it is possible to secure a wide maintenance space while making the entire work carriage compact.

[0010]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a side view of a work carriage in which the device of the present invention is implemented, FIG. 2 is a front view thereof, and FIG. 3 is a schematic plan view. Figure, Figure 4
Is an enlarged partial view of a main part of the device of the present invention, and FIG. 5 is a plan view of the main part. 1 to 3, a work carriage (A) includes a lifting mast that is erected on a self-propelled vehicle equipped with a pair of left and right traveling parts (11) and (11), and a workbench (3) mounted on the lifting mast.
And a work seat (10) provided on the workbench (3).

The pair of left and right running parts (11), (11) are of a crawler type in which elastic endless crawler belts are hung around the drive wheel, the guide wheel and the track roller group, and are arranged under the self-propelled vehicle body. Equipped. Then, the drive wheels of each traveling unit (11) are driven by the drive case.
A drive case (13) fitted to a drive axle (13) extending outward from the lower part of the drive case (12) and connected to an upper part of the drive case (7) to drive the drive case (14). The power is transmitted to the drive axle (13) through the transmission mechanism in the gear so that the rotation direction can be switched.

The lifting mast mounted on the self-propelled vehicle is a support cylinder (1) having an angular shape or a different diameter, which is erected on the self-propelled vehicle.
And the inner surface of the supporting cylinder (1) is similar to the outer shape of the supporting cylinder (1).
A vertically movable cylinder body (2) which is vertically slidably fitted in the support cylinder body and a support cylinder body.
A support cylinder (1) and a lifting cylinder (2) housed in the center of (1)
And an elevating mechanism (not shown) interposed between the elevating mechanism and the elevating mechanism including an elevating electric motor (15) and a transmission mechanism (16). Thus, the elevating cylinder (2) can be moved up and down with respect to the support cylinder (1).

The elevating electric motor (15) and the left and right traveling electric motors (14) (14) are connected to a battery (17) mounted on a self-propelled vehicle body, and a controller (18) is provided. ), The battery (1
The various mechanisms such as 7) and the controller (18) are covered with a bonnet-shaped cover (19) which can be opened or closed or wholly or partially removable.

The workbench (3) mounted on the lifting cylinder (2) of the lifting mast is slightly above the cover (19) when the lifting cylinder (2) is lowered to the lowest position. The upper frame body (3a) positioned so as to cover the upper side of the cover (19)
And a guard frame body (3b) extending laterally from the upper frame body (3a) to cover both lateral outer sides of the cover (19), and the guard frame body (3b). The step (3c) is integrally connected to the front part of the.

Therefore, the mounting portion (5) mounted on the base end portion of the upper frame (3a) is pivoted laterally to the support seat (6) mounted on the lifting cylinder (2) side. The shaft (7) is mounted so as to be rotatable in the vertical direction, and the mounting portion (5) is provided with a posture change maintaining mechanism (4) so that the workbench (3) moves vertically about the pivot shaft (7). The posture can be changed and held between a posture which is rotated and extends horizontally or substantially horizontally from the elevating cylinder (2) and a posture which is rotated upward and erected, and the illustrated embodiment is shown. In the above, the holding part (8) for maintaining the workbench (3) in a horizontal or substantially horizontal posture and the attachment part (9) for maintaining the workbench (3) in a posture in which the workbench (3) is erected. It is provided in 5) to form a posture change maintaining mechanism (4).

Specifically, when the workbench (3) is in a posture in which the workbench (3) extends in a horizontal or substantially horizontal posture from the elevating cylinder (2), the elevating cylinder is
A plate-like body that contacts the (2) is provided below the mounting part (5) to form the holding part (8). Further, the stopper (9) is a support shaft (18) which is horizontally supported by the mounting portion (5) at a portion between the upper end of the plate-like body which is the holding portion (8) and the pivot shaft (7). )
When the workbench (3) is in a horizontal or substantially horizontal posture, it is inserted between the pivot shaft (7) and the side surface of the lifting cylinder (2) (Fig. 4). When the workbench (3) is rotated upward about the pivot shaft (7) as a fulcrum, the worktable (3) projects from the mounting portion (5) toward the elevating cylinder (2). It is rotated by its own weight in such a posture that it is maintained at a predetermined position, and the projecting tip portion abuts the side surface of the elevating cylinder (2) to maintain the workbench (3) in a standing posture. Refer to the phantom line drawing state of FIG. 4).

The posture change maintaining mechanism (4) is, for example,
Various means other than those shown in the drawings may be adopted, such as maintaining the workbench (3) in a rotationally raised three-dimensional posture by means of a hooking hook, but in the case of the construction shown in the drawings, Stopper (9) only by rotating the base (3) upward.
Has a merit that it shifts to a maintenance posture, and in a non-maintenance posture, there is an advantage that it can be compactly accommodated in a narrow space.

Furthermore, a work seat is provided on the upper surface of the workbench (3).
(10) is provided, but the work seat (10) is an upper frame
A seat (20) mounted rotatably around a longitudinal axis (Y) of a receiving cylinder part (19) mounted on the seat (3a) and a seat (20) attached to the seat (20). 21) and a handrail (22) standing on the right and left sides of the seat (21) and standing upright from the seat (20). The seat (20) and the receiving tube portion (19). The lock mechanism (23) is provided so that it can be locked and fixed at any rotation position around the vertical axis (Y). In addition,
Reference numeral (24) is a driving operation section provided on the work seat, and (25) is a main switch provided on the opposite side of the driving operation section.

[Brief description of drawings]

FIG. 1 is a side view of a work carriage in which the device of the present invention is implemented.

FIG. 2 is a side view of a work carriage in which the device of the present invention is implemented.

FIG. 3 is a schematic plan view of a work carriage on which the device of the present invention is implemented.

FIG. 4 is an enlarged partial view of a main part of the device of the present invention.

FIG. 5 is a plan view of a main part of the device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support cylinder 2 Elevating cylinder 3 Workbench 4 Posture change maintaining mechanism 5 Mounting part 6 Support seat 7 Pivot shaft 8 Holding part 9 Stopper-10 Working seat A Self-propelled vehicle Y Vertical axis

Claims (3)

[Claims] 1. A work carriage configured by mounting a workbench (3) on an elevating cylinder (2) which is elevated and lowered along a support cylinder (1) standing on a self-propelled vehicle (A), Elevating the workbench (3)
The workbench (3) is mounted on the (2) so as to be vertically rotatable, and a posture change maintaining mechanism (4) is installed between the workbench (3) and the elevating cylinder (2) to mount the workbench (3) on the elevating cylinder. An elevating workbench mounting device for a work dolly capable of changing and holding a posture that extends horizontally or substantially in the horizontal direction from (2) and a posture that rises upright. 2. A mounting portion (5) is provided at the base end of the workbench (3),
The upper portion is attached to a support seat (6) provided on the elevating cylinder (2) so as to be vertically rotatable by a lateral pivot shaft (7).
A holding part (8) for contacting the lifting cylinder (2) to maintain the work table (3) in a horizontal or substantially horizontal posture, and (5) for contacting the lifting cylinder (2) when standing. 2. An elevating workbench mounting device for an elevating work trolley according to claim 1, further comprising a stopper (9) for maintaining the workbench (3) in a standing posture. 3. A lifting cylinder (2) which moves up and down along a supporting cylinder (1), and a work table (3) which is mounted on the lifting cylinder so as to be vertically rotatable around a pivot shaft (4). A posture change maintaining mechanism (4) is provided between them, and the workbench (3) is changed to a posture in which it extends horizontally or substantially horizontally from the elevating cylinder (2) and a posture in which it rises by rotating upward. 3. A self-propelled work cart that can be held by holding the work table (3), wherein the work table (3) is provided with a work seat (10) that can be turned around a vertical axis (Y). Elevating workbench attachment device for the self-propelled work truck described.