JP3398280B2 - Workbench cover - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottomed box on which a worker can board, such as a work table provided at the tip of a boom of a high-altitude work vehicle. The present invention relates to a workbench cover used when storing a formed workbench. 2. Description of the Related Art An aerial work vehicle 10 as shown in FIG.
At the tip of a boom 13 that can be freely raised, contracted, swiveled, and the like, a worktable 14 formed in a rectangular bottomed box with an open upper portion is horizontally rotatable with respect to the boom 13. . After the work is completed, the boom 13
Work table 14 is boom 13
Is held in a retracted state in which it is turned substantially at right angles. The workbench cover 50 covers the upper opening of the workbench 14 so that rainwater, dust, etc. do not enter the workbench 14.
Is to be installed. The worktable cover 50 is a cloth cover body 51 formed so as to cover the entire upper opening of the worktable 14.
And an outer peripheral band 52 provided on the peripheral edge of the cover main body 51 and a fixing rubber band 53. The work table cover 50 thus configured is fastened by winding the outer peripheral band 52 around the outer surface of the work table 14, and a bracket formed on the work table 14 for connecting the work table 14 and the boom 13. The cover main body 51 is fixed to the worktable 14 by hanging the fixing rubber band 53 around the lower side of 14 a and locking the hooks 54. When the workbench cover 50 thus constructed is attached to the workbench 14, the workbench 14 is placed in the retracted state, and then the roof provided on the operation cabin C is set. An operator gets on step 15 and
After spreading the workbench cover 50 above and covering the workbench 14,
Since it is necessary to hang the fixing rubber band 53 under the bracket 14a to lock the hooks 54, there is a problem that the operation is complicated. [0005] Further, depending on the aerial work vehicle, the bracket 14a in the retracted state may be located in front of the roof step 15, so that the work of hanging the fixing rubber band 53 or locking the hook 54 is performed. There is also the problem of difficulty. Furthermore, in the above-mentioned workbench cover 50, since the workbench 14 is fixed on one side of the cover body 51, there is a problem that the workbench cover 50 is easily detached when the aerial work vehicle 10 travels. The present invention has been made in view of such a problem, and provides a worktable cover that can be easily attached to a worktable and that can be firmly fixed to the worktable. It is intended to be. A workbench cover according to the present invention for achieving the above object is formed in a box shape with a bottom having a substantially rectangular upper opening extending in the front-rear and left-right directions. It can be attached to a work table. And, it has a cover main body which is configured to be able to expand and contract at least in the front-rear direction of the worktable, and the cover main body can be attached so as to cover the entire upper opening of the worktable in an extended state. Further, a fixing band is fixed to the cover body.
The fixing band is formed so that at least one end thereof is forked, and is fixed to one of the left and right ends of the cover main body before and after. The other end of the fixing band is fixed to the other of the left and right ends of the cover body. The work table cover thus configured can be attached to the work table with the fixed band being locked around the work table in a state where the cover body is disposed above the work table.
Then, in a state where the cover body is extended to cover the upper opening, the forked portion is extended and the fixing band surrounds the work table and is fixed to the work table. [0009] Thus, the distance between the forked portions of the fixed band is shortened by shrinking the cover member, so that the length of the fixed band surrounding the work table is increased. This allows the cover main body to be positioned above the work table so as to pass through the work table while the fixing band is fixed to the cover body. Then, if the cover body is extended with the work table underneath, the distance between the forked portions of the fixed band is increased, and the length of the fixed band surrounding the work table is shortened. The work table cover can be firmly fixed to the work table. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. An aerial work vehicle 10 shown in FIG. 1 is an example of an aerial work vehicle having a work table to which a work table cover according to the present invention is attached, and is the same as the aerial work vehicle 10 shown in FIG. However, here, the configuration will be described in some detail. The aerial work vehicle 10 is configured such that a turntable 12 that can turn horizontally with respect to the vehicle body 11 is provided on a movable vehicle body 11 that is configured based on a truck. On the swivel base 12, a boom 13 which is telescopically (nested) constituted by a plurality of boom members and which can freely expand and contract is pivotally supported with respect to the swivel base 12 so as to freely swing up and down. A worktable 14 is attached to the tip of the boom 13 so as to be horizontally pivotable with respect to the boom 13. The work table 14 is formed in a rectangular bottomed box shape with an open upper part, and is configured to allow an operator to board. In the high-altitude working vehicle 10 configured as described above, the operator on the work table 14 is moved to a desired high place by performing the raising and lowering operation and the expansion and contraction operation of the boom 13. After the work is completed, the boom 13 is lowered and reduced as shown in the figure, and the longitudinal direction (front-rear direction) of the worktable 14 is parallel to the front surface of the driving cabin C disposed at the front of the vehicle body 11. As described above, it is held in the stored state in which it has been turned until it is substantially perpendicular to the axial direction of the boom 13,
A workbench cover 20 that covers an upper opening of the workbench 14 is attached so that rainwater, dust, and the like do not enter the workbench 14. The worktable cover 20 is formed of a cloth cover body 21 formed so as to cover the entire upper surface opening of the worktable 14.
And an outer peripheral band 22 arranged on the periphery of the cover main body 21 and a fixing band 23 for fixing the cover main body 21 to the work table 14. The cover body 21 includes an upper surface 21a that covers the entire upper opening surface of the work table 14, and a peripheral edge 21b formed on four sides of the work table 14 to extend downward from an end of the upper surface 21a. Consists of Note that the cover body 21 is generally made of a waterproof sheet, and
It is desirable to use a material that is as stiff and soft as possible in order to simplify the fastening with the fourth member. A plurality (four in the workbench cover 20) of ribs 24 extending in the width direction are attached to the upper surface portion 21a. The rib 24 is provided in a state where the workbench cover 20 is attached to the workbench 14 as described later.
The work platform cover 20 is loosened and the rain that falls falls on the work platform cover 2.
This is to prevent the liquid from accumulating on the upper surface of the zero. Therefore, the ribs 24 can prevent the work table cover 20 from being loosened when the work table cover 20 is mounted, and as shown in FIG. 2A, the work table cover 20 is extended in the longitudinal direction (in the longitudinal direction). From the state where the dimension is L1), even if it is compressed (even if folded in a bellows) so as to be bellows in the longitudinal direction (so that the dimension in the longitudinal direction is L2), it is possible to reduce the width of the worktable cover 20 in the width direction. The dimension W does not change. A plurality of band loops 21 are provided on the peripheral portion 21b.
c is sewn, and the band threader 21c has
An outer peripheral band 22 is passed through. The outer peripheral band 22 is formed using nylon fiber or the like to have a length that can be wound around the work table 14. When the workbench cover 20 is placed on the workbench 14, the other end is locked by a locking tool 22 a such as a buckle provided at one end of the outer peripheral band 22, thereby tightening the outer peripheral band 22, thereby forming a peripheral edge. The work table cover 20 is firmly attached so that the work table cover 20 does not separate from the work table 14 by bringing the part 21 b into close contact with the outer periphery of the upper end of the work table 14. The outer peripheral band 22 may be made of a fiber or the like which does not expand and contract as described above, or may be made of an elastic member such as a rubber which can expand and contract. When the outer peripheral band 22 is made of rubber, the work table cover 20 is folded in a bellows shape as shown in FIG. 2B in a free state in which no tension is applied to the outer peripheral band 22. If the work table cover 20 is removed from the work table 14 by adjusting the work table cover 20 to an appropriate length, the work table cover 20 can always be folded into a bellows-like reduced state. A fixed band 23 having both ends divided into two branches (formed in a Y-shape) is attached to a longitudinal side portion of the peripheral portion 21b. The fixing band 23 is also made of nylon fiber, and is configured to be able to lock and separate at a portion (lower portion) extending downward from the forked portion. The fixed band 23 is a part of the worktable 1 in the retracted state.
4 has a lower portion 23b of a near-side fixed band member 23a located on the vehicle body 11 side when the work table cover 20 is attached to the outer fixed band member 2 attached to the opposite side.
3c is formed shorter than the length of the lower portion 23d. At the lower end of the lower portion 23b, a buckle 23e capable of locking the lower portion 23d on the opposite side at a desired position is attached. By locking the lower portion 23d with the buckle 23e, a fixing band is formed. 23 can be held in an integrally connected state. Thus, the fixing band 23 is connected, the upper surface portion 21a is extended,
Further, in a state where a part of the lower portion 23d is positioned horizontally to the same size as the width of the worktable 14, the distance H1 from the upper surface of the cover body 21 to the horizontal portion of the lower portion 23d is equal to the worktable. The height is adjusted so as to be slightly longer than the height of 14. Next, attachment of the workbench cover 20 to the workbench 14 will be described. When attaching the workbench cover 20 to the workbench 14, the workbench 14 is first placed in the retracted state. Next, the cover body 21 is contracted in a bellows shape in the longitudinal direction. Here, in a state where the cover main body 21 is contracted, the distance between the forked portions, which is the portion to which the fixing band 23 is attached, is reduced (the forked portion is in a contracted state) in the peripheral edge portion 21b. The distance H2 from the upper surface to the horizontal portion of the lower portion 23d is longer than the height of the worktable 14. As a result, the worker riding on the roof step 15 can be moved forward (to the right in FIG. 1) of the work table 14.
From the cover body 2 so as to pass through the work table 14.
1 is positioned above the work table 14. Then, the cover main body 21 is pulled and spread in the left-right direction (the longitudinal direction of the cover main body 21) so that the peripheral portion 21b is located at the outer periphery of the upper end opening of the work table 14 (covering the opening of the work table 14). Then, the cover body 21 is put on the worktable 14. As described above, in the state where the cover main body 21 is extended and expanded in the left-right direction, as described above, the distance H
1 is slightly longer than the height of the worktable 14, so that the lower portion 23 protruding from the buckle 23e
By pulling d, the fixing band 23 is tightened around the work table 14, so that the work table cover 20 can be firmly attached to the work table 14. The fixing band 23 may also be formed of an elastic material such as rubber. In such a configuration, the distance H1 from the upper surface of the cover main body 21 to the horizontal portion of the lower portion 23d is reduced. The height may be adjusted to be slightly shorter than the height of the work table 14. Thus, when the work table cover 20 is attached to the work table 14, the fixed band 23 is tightened around the work table 14 by the tension of the fixed band 23.
Can be easily passed through the workbench 14 in a state where is contracted. As described above, when the cover main body 21 is put on the work table 14, the work band cover 20 is firmly fixed to the work table 14 because the fixing band 23 surrounds and tightens the work table 14. In addition, the fixed band 23
In the state in which the cover body 21 is tightened, a force to shrink the cover body 21 in a bellows shape acts,
1b is located on the outer periphery of the worktable 14 and is fastened by the outer peripheral band 22;
Is firmly fixed to the worktable 14 without shrinking. Although the work table cover 20 has the ribs 24 extending in the width direction, the ribs 24 are not always necessary in the present invention, and the ribs 24 need not be provided. . The workbench cover according to the present invention is not limited to the above-described structure. As shown in FIG. 3, a fixed band 33 having a longer length when the cover body 31 is contracted is used. The workbench cover 30 may be formed by forming the Y-shaped portion 33a on only one side. further,
As shown in FIG. 4, fixed band members 43 a and 43 b formed in a V-shape are provided at the left and right ends of the cover body 41, respectively, and the lower ends of these fixed band members 43 a and 43 b are Alternatively, the work table cover 40 may be configured by providing a fixed band 43 configured to be connected at the bottom surface. As described above, the workbench cover according to the present invention is provided with a cover main body that can be extended and contracted at least in the front-rear direction of the workbench and can be attached to the workbench in an extended state. One end is bifurcated and fixed to the front and rear of one of the right and left ends of the cover body, and the other end is fixed to the other of the left and right ends of the cover body. Accordingly, when the cover is attached to the worktable, the fixing band is extended by shrinking the cover body, so that the cover can be easily attached to the worktable. Also, when fixing to the worktable, extend the cover body until it covers the entire upper opening of the worktable, and the fixing band will be shortened and tightened around the center of the worktable, so it will be securely fixed to the worktable. You. Therefore, it is not necessary to unnecessarily lengthen the fixing band, and a workbench cover that can prevent rainwater or the like from entering the workbench when the workbench is not used can be easily and reliably provided on the workbench. Can be attached.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an aerial work vehicle to which a workbench cover according to the present invention is attached. FIG. 2A shows a state where the work table cover is attached to the work table, and FIG. 2B shows a state where the work table cover is contracted. FIG. 3 is a perspective view showing a different configuration of the workbench cover according to the present invention. FIG. 4 is a perspective view showing a different configuration of the workbench cover according to the present invention. FIG. 5 is a perspective view of a conventional work platform with a workbench cover attached thereto. [Description of Signs] 10 Work Platform 13 Boom 14 Workbench 14a Bracket 15 Roof Step 20, 30, 40, 50 Workbench Cover C Operation Cabin

Continuation of the front page (56) References JP-A-57-9700 (JP, A) JP-A-2-139894 (JP, U) JP-A-3-76896 (JP, U) (58) Fields investigated (Int) .Cl. ⁷ , DB name) B66F 9/06

Claims (1)

(57) [Claim 1] A workbench cover which is attached to a workbench formed in a box shape with a bottom and having a substantially rectangular upper opening extending in the front, rear, left and right directions. A cover body that is extendable and retractable in the front-back direction of the worktable and covers the entire upper opening in an extended state and can be attached to the worktable; A fixed band fixed to the other of the right and left ends of the cover main body, and the other end is fixed to the front and rear of the cover main body.
The fixing band is locked around the worktable and can be attached to the worktable. In a state where the cover body is extended to cover the upper opening, the forked portion is extended and the fixed band is extended. A workbench cover, wherein the workbench cover is fixed to the worktable so as to be fastened around the worktable.