JPH0751440B2 - Scaffolding for work at height in industrial vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a scaffold for aerial work in industrial vehicles used in, for example, tunnel construction.

(Prior Art) Conventionally, in a scaffolding for working in high places in this type of industrial vehicle, a support boom is mounted on a frame of the industrial vehicle so as to be vertically movable and horizontally rotatable, and the support boom is supported. A structure in which a deck was installed horizontally at the end of the boom and an auxiliary deck was installed in a folded shape at the end of this deck was mainly adopted.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional apparatus, the deck itself forms an arc around the rotation center of the support boom as the support boom rotates in the horizontal direction. Since it is moved like drawing, it is not possible to accurately correspond to the actual work site,
For example, it is very difficult to do work such as rock bolt driving in tunnel construction, and it also has a problem that safety for workers is impaired, and since the handling of the auxiliary deck is foldable, it is very troublesome. there were.

Therefore, in view of the above-mentioned conventional drawbacks, the present invention allows the main deck to accurately correspond to the working portion of the support boom in accordance with the horizontal rotation of the support boom, and facilitates the handling of the slide deck as an auxiliary deck. The object of the present invention is to provide a scaffold for working at a high place in an industrial vehicle, which is capable of safely and rationally performing each work such as tunnel construction.

(Means for Solving the Problems) In order to achieve the above object, the present invention is provided with a main frame movably mounted in a longitudinal direction of a carrier frame of an industrial vehicle, and the main frame. And a supporting boom that can be tilted in the vertical direction by a hydraulic cylinder for vertical movement and is allowed to reciprocate horizontally in a predetermined range by a hydraulic cylinder for horizontal movement, and a vertical direction with respect to the end of the supporting boom. And a main deck mounted on the pivot support frame and allowed to rotate in the horizontal direction by a fluid pressure cylinder for pivoting, and a drive for the main deck. A slide deck installed so as to extend in the horizontal direction and be accommodated by means, and between the main frame and the support boom, a first auxiliary system that follows the fluid pressure cylinder for vertical movement. A binder and a second auxiliary cylinder that follows the fluid pressure cylinder for left and right movement are provided, and a fluid pressure cylinder for deck up and down adjustment is provided between the support boom and the swing support frame.
A fluid pressure cylinder for adjusting the left and right of the deck is disposed between the swing support frame and the main deck so that the main deck is always horizontally moved in parallel in the vertical direction when the support boom is tilted in the vertical direction. The first auxiliary cylinder and a fluid pressure cylinder for adjusting the deck up and down are interlocked with each other, and the second auxiliary cylinder is configured to move the main deck in parallel when the support boom reciprocates in the horizontal direction. The main idea is to work with the fluid pressure cylinder for adjusting the deck left and right.

(Operation) The main deck is horizontally moved in parallel while keeping the horizontal state in response to tilting of the support boom in the vertical direction and rotation in the horizontal direction, and the slide deck is the main deck. It is slid with respect to and horizontally extended and stored.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
In the figure, 1 indicates the entire industrial vehicle such as a truck,
Two guide rails 2 are installed in the longitudinal direction on the carrier frame 1a, and a main frame 3 composed of a lower member and a vertical member is mounted on the guide rail 2 on a wheel 4 attached to the lower member. , 4 are provided so as to be able to move back and forth (left and right in FIG. 1), and in the vertical direction on the vertical member side of the main frame 3, a support bracket 5 is rotatable about an axis via a support shaft 6. Is supported. The main frame 3 is configured so that the guide rails 4 and 4 sandwich the guide rail 2 from above and below so as not to separate from the guide rail 2.

One end of the support boom 7 formed in a substantially doglegged shape is installed so as to be rotatable (tilted) in the up-down direction with respect to almost the upper portion of the support bracket 5 via a support pin 8, and at the lower surface thereof. A rod 9a of a fluid pressure cylinder 9 for vertically moving a boom, which is attached to a substantially lower portion of the support bracket 5, is pivotally supported at a substantially central portion, and the support bracket 5 is substantially supported near a pivot support portion of the rod 9a. A rod 10a of a first auxiliary cylinder 10 mounted at the center is pivotally supported.
Further, a flange 5a is extended at a substantially central portion of the support bracket 5, and one side of the flange 5a is a fluid pressure cylinder 11 for horizontally moving the boom, which is attached substantially horizontally to the main frame 3. The rod 11a is rotatably supported, and the rod 12a of the second auxiliary cylinder 12, which is also mounted substantially horizontally to the main frame 3, is rotatably supported on the other side. Then, the support boom 7 is vertically rotated (tilted) about the main frame 3 by the operation of the fluid pressure cylinder 9 for vertically moving the boom, with the support pin 8 of the support bracket 5 as a fulcrum, and at the same time, the boom is moved left and right. By the operation of the fluid pressure cylinder 11, the support shaft 6 is supported together with the support bracket 5.
It is configured to be rotated (tilted) in the left-right direction with the fulcrum as a fulcrum.

The swivel support frame 13 is formed of a large-diameter annular rail-shaped member that has a support cylinder in the center and is integrally provided from the support cylinder via ribs, and a part of the outer periphery thereof is the support boom. A fluid pressure cylinder for tilting the deck up and down, which is mounted on the other end of the support boom 7 through a bracket and a support shaft 14 so as to be tiltable in the vertical direction, and is attached to the other end of the support boom 7 at a part of the lower part thereof. Fifteen rods 15a are pivotally supported. It should be noted that the first auxiliary cylinder 10 and the fluid pressure cylinder 15 for adjusting the deck up and down are the same as the fluid pressure cylinder 9 for boom up and down movement as the first auxiliary cylinder 10 operates following the fluid pressure cylinder 9. The fluid from the auxiliary cylinder 10 is introduced into the fluid pressure cylinder 15 for adjusting the deck up and down,
It is configured such that the fluids flow through each other in an interlocking relationship in which the expansion and contraction operation of 15a is performed. For example, as the support boom 7 tilts upward, the rod 10a of the first auxiliary cylinder 10 When extended, the fluid from the first auxiliary cylinder 10 flows into the fluid pressure cylinder 15 for adjusting the deck up and down and operates so as to contract the rod 15a thereof, and the supporting boom 7 tilts downward. It is sometimes configured to work in reverse.

A swivel rod 16 is placed on the swivel support frame 13, and one end of the swivel rod 16 has a horizontal shape that cannot be removed from the support cylinder of the swivel support frame 13 via a rotary cylinder 16a. While being rotatably supported, a connecting arm 16b is projected at a right angle, and the connecting arm 1b is provided at the other end.
A mounting arm 16c is provided so as to project in a direction opposite to 6b, and a rod of a fluid pressure cylinder 17 for horizontally adjusting the deck mounted horizontally on the swivel support frame 13 is provided on the connecting arm 16b.
17a is pivotally supported. It should be noted that the second auxiliary cylinder 12 and the fluid pressure cylinder 17 for adjusting the left and right of the deck are operated by the second auxiliary cylinder 12 following the fluid pressure cylinder 11 for moving the boom left and right. The fluid from the cylinder 12 is allowed to flow into the fluid pressure cylinder 17 for adjusting the deck left and right, and the rod 17a is expanded and contracted so that the fluids are circulated to each other in an interlocking relationship. When the rod 12a of the second auxiliary cylinder 12 is extended along with the rightward rotation of the boom 7, the fluid from the first auxiliary cylinder 10 flows into the fluid pressure cylinder 15 for adjusting the deck up and down. Then, the rod 15a is operated to contract, and when the support boom 7 is rotated to the left, the rod 15a is operated in the opposite direction.

Main deck 18 mounted on the swivel support frame 13
Is formed from a wire mesh-shaped bottom plate 18a framed in a substantially rectangular shape, and a handrail 18b provided upright on the side edge in the longitudinal direction of the upper surface of the bottom plate 18a. Rotating cylinder 16a of swiveling rod 16 with respect to support frame 13
A fluid pressure cylinder for swinging a deck, which is horizontally rotatably supported inside and is horizontally mounted on a mounting arm 16c of the swiveling rod 16 at a portion deviated from the supporting portion on the lower surface. Twenty rods 20a are pivotally supported. Also,
On the bottom plate 18a of the main deck 18, the swivel support frame 13
Support bracket 22 that holds the
The main deck 18 prevents the swing support frame 13 from being pulled out and serves as a guide for the swing. It should be noted that the frame pieces at both end edges in the longitudinal direction of the bottom plate 18a of the main deck 18 are formed so as to have openings facing each other for mounting a slide deck described later. Then, the main deck 18 is configured to be swung via the swivel rod 16 about the swivel cylinder 16a of the swivel rod 16 by the operation of the fluid pressure cylinder 20 for swiveling the deck.

Slide decks 23,2 mounted on the main deck 18
The main deck 3 is formed of a wire mesh-like bottom plate 23a which is slightly smaller than the main deck 18 and has a substantially rectangular shape, and handrails 23b which are erected on the respective upper edge portions of the bottom plate 23a.
8 of the bottom plate 18a of the bottom plate 18a is slidably fitted into the openings of the frame pieces at both edges in the longitudinal direction, and is horizontally aligned with the main deck 18 from the other end in the lateral direction along the longitudinal direction. It is installed so that it can be extended and stored.Endless chains 24, 24 are stretched in a straight line along the longitudinal direction through brackets between substantially both ends of its lower surface. 2
Drive sprocket wheels 26, 26 of forward / reverse drive means 25, 25 such as hydraulic motors mounted on both ends of the lower portion of the main deck 18 are meshed with the main deck 18, respectively. Then, the slide decks 23, 23 are driven sprocket wheels 26,
By driving 26, it is configured to be horizontally reciprocated with respect to both sides of the main deck 18 via chains 24, 24 meshing with the drive.

This example is configured as described above, and its operation will be described.

Now, the case of moving the main deck 18 upward will be described. The rod 9a is extended by the operation of the fluid pressure cylinder 9 for vertically moving the boom, and the extension of the rod 9a causes the support boom 7 to be supported by the main frame 3. Since it is tilted upward with the support pin 8 of the bracket 5 as a fulcrum,
The main deck 18 located at the tip end of the main deck 18 is moved upward. At this time, since the rod 10a of the first auxiliary cylinder 10 is extended following the tilting of the support boom 7, the fluid from the first auxiliary cylinder 10 flows into the fluid pressure cylinder 15 for adjusting the deck up and down. Then, the rod 15a operates so as to be contracted, so that the revolving support frame 13 is tilted with respect to the support boom 7 by the contraction of the rod 15a. By this operation, the main deck 18 automatically keeps the horizontal state automatically following the tilted state of the support boom 7 in the upward direction (see FIG. 1).

When the main deck 18 is tilted downward, it is performed by contracting the rod 9a of the fluid pressure cylinder 9 for boom up / down movement in the opposite direction to that described above, and the associated members including the fluid pressure cylinder are All the operations are the reverse of the above-mentioned upward movement.

Next, a case where the main deck 18 is rotated (displaced) to the right will be described. A fluid pressure cylinder for moving the boom left and right.
The rod 11a is contracted by the operation of 11, and the supporting boom 7 is rotated rightward with respect to the main frame 3 together with the supporting bracket 5 with the supporting shaft 6 as a fulcrum, whereby the main deck 18 Is rotated to the right. At this time, since the rod 12a of the second auxiliary cylinder 12 is extended following the right rotation of the support boom 7, the fluid from the second auxiliary cylinder 12 is used as a fluid pressure cylinder for adjusting the deck left and right. 17 rod into that rod 17
Since it operates so as to contract a, the contraction of the rod 17a causes the pivot rod 16 to rotate relative to the pivot support frame 13.
Is horizontally rotated around the rotation cylinder 16a integrally with the fluid pressure cylinder 20 for rotating the deck. By this operation, the main deck 18 follows the rotation of the support boom 7 to the right and is always horizontally moved in a parallel state (see phantom line in FIG. 7).

When the main deck 18 is rotated (displaced) to the left, the rod 11 of the fluid pressure cylinder 11 for left and right movement of the boom is moved.
This is performed by extending a in the opposite direction to that described above, and the operation of each member including the fluid pressure cylinder and the like accompanying it is the reverse operation at the time of turning to the right direction.

Further, a case where the main deck 18 is swung with respect to the support boom 7 will be described. In the state of FIG. 7, when the rod 20a is extended by the operation of the fluid pressure cylinder 20 for deck swiveling, the swiveling rod is moved. 16 is the second
The auxiliary cylinder 12 is connected to the rod 12a of the auxiliary cylinder 12 so that it is fixed to the swivel support frame 13 side, and the main deck
By connecting the rod 20a to a portion deviated from the turning center of the turning shaft 18, the main deck 18 is turned about the turning shaft 19 with respect to the turning barrel 16a of the turning rod 16 (seventh). (See virtual lines). The above turning range is set to 90 °. When returning to the original position from the turning state, the rod 20a of the fluid pressure cylinder 20 for turning the deck is operated so as to contract, and the operation is the reverse of the above.

Next, the case of moving the slide decks 23, 23 will be described. In the state where the slide decks 23, 23 are housed in the main deck 18, a driving means 2 such as a hydraulic motor is provided.
When the drive sprocket wheels 26, 26 are rotated in the forward direction by operating 5, 25, the slide decks 23, 23 are moved horizontally with respect to the main deck 18 via the chains 24, 24 meshed with the drive sprocket wheels 26, 26. The main deck 18 is horizontally extended from both ends (see FIGS. 4 and 5). When the drive means 25, 25 are housed in the main deck 18, the drive means 25, 25 are operated in reverse to the above to reverse the drive sprocket wheels 26, 26, and the slide deck 2 is engaged with the chains 22 and 24 meshed therewith.
Since the 3,23 are returned horizontally to the main deck 18, they are housed in the main deck 18 by this operation. The slide deck 23 on one side can be moved independently.

In this embodiment, each member is operated as described above, and corresponds to each work such as tunnel construction on the main deck 18 and the slide decks 23, 23.

(Effects of the Invention) As described above, the present invention includes a main frame mounted to a carrier frame of an industrial vehicle so as to be movable in the longitudinal direction thereof, and a fluid pressure cylinder mounted on the main frame for vertical movement. A support boom that is tiltable in the vertical direction and is allowed to reciprocate in the horizontal direction within a predetermined range by a fluid pressure cylinder for horizontal movement, and is installed so as to be tiltable in the vertical direction with respect to the end portion of the support boom. Swivel support frame, a main deck mounted on the swivel support frame and allowed to rotate in a horizontal direction by a fluid pressure cylinder for turning, and a main deck extending in a horizontal direction by drive means. And a slide deck installed so as to be stowable, and a first auxiliary cylinder that follows the fluid pressure cylinder for vertical movement and a fluid pressure for horizontal movement between the main frame and the support boom. A second auxiliary cylinder that follows the cylinder is provided,
A fluid pressure cylinder for deck up / down adjustment is provided between the support boom and the swing support frame, and a fluid pressure cylinder for deck left / right adjustment is provided between the swing support frame and the main deck. When tilting the support boom in the vertical direction, the first auxiliary cylinder and the fluid pressure cylinder for adjusting the deck up and down are interlocked so that the main deck always moves in parallel in the vertical direction in the horizontal state. Since the second auxiliary cylinder and the fluid pressure cylinder for adjusting the left and right of the deck are interlocked with each other so as to move the main deck in parallel in the horizontal direction when reciprocating in the horizontal direction, Corresponding to tilting and rotation in the horizontal direction, the main deck can be moved horizontally in parallel while always maintaining the horizontal state, and the structure is simplified to ensure positive movement. It is possible to improve the. Also,
The slide deck is slid with respect to the main deck and is extended and stored horizontally. Following the rotation of the main deck support boom in the left-right direction, the boom can be moved in parallel while maintaining the horizontal state, and the slide deck can be slid relative to the main deck to extend and store horizontally. You can

This means that the main deck can always be accurately adapted to the work site, and the work feeling of the worker is not impaired.
Further, there is an advantage that the slide deck can be easily handled with respect to the main deck, and each work such as tunnel construction can be performed safely and rationally.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is a side view schematically showing the whole, FIG. 2 is an enlarged side view showing a mounting relationship between a support boom, a swing support frame, and a main deck, and FIG. Similarly, an enlarged plan view, FIG. 4 is an enlarged side view showing a mounting relationship between a main deck and a slide deck, FIG. 5 is an enlarged plan view, FIG. 6 is a longitudinal sectional view, and FIG. is there. 1 …… Industrial vehicle 7 …… Support boom 9 …… Boom up / down fluid pressure cylinder 10 …… First auxiliary cylinder 11 …… Boom left and right fluid pressure cylinder 12 …… Second auxiliary cylinder 13 …… Turning Support frame 15 …… Fluid pressure cylinder for up / down movement of the deck 17 …… Fluid pressure cylinder for left / right adjustment of the deck 18 …… Main deck 20 …… Fluid pressure cylinder for turning the deck 23 …… Slide deck 27 …… Driving means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Tokugawa 2-1, Miyanari-cho, Gamagori-shi, Aichi Yamauchi Industrial Co., Ltd. (72) Teruji Hirano 2-1-1 Miyanari-cho, Gamagori, Aichi Prefecture Yamauchi Kogyo Incorporated company (72) Hideo Tsukui Hideo Tsukai 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Goju Yoshida 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Incorporated Co., Ltd. (72) Inventor Yuaki Sato 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kajima Construction Co., Ltd. (56) Reference JP 59-115766 (JP, A) Actual exploitation Sho 57 -116700 (JP, U)

Claims (1)

[Claims] 1. A main frame mounted to a carrier frame of an industrial vehicle so as to be movable in the longitudinal direction thereof, and a fluid pressure cylinder mounted on the main frame for vertically moving and capable of tilting in the vertical direction and left and right. A support boom that is allowed to reciprocate in a horizontal direction within a predetermined range by a fluid hydraulic cylinder for movement, a swing support frame that is tiltably mounted vertically with respect to the end of the support boom, and the swing. A main deck mounted on the support frame and allowed to rotate in the horizontal direction by a fluid pressure cylinder for turning, and a main deck mounted so as to be able to extend and be housed in the horizontal direction by drive means. A first auxiliary cylinder that follows the fluid cylinder for vertical movement and a second auxiliary cylinder that follows the fluid pressure cylinder for horizontal movement between the main frame and the support boom; An auxiliary cylinder is provided, and a fluid pressure cylinder for deck up / down adjustment is provided between the support boom and the swing support frame, and a deck left / right adjustment is provided between the swing support frame and the main deck. A fluid pressure cylinder is provided, and the first auxiliary cylinder and the fluid pressure cylinder for adjusting the deck up and down are arranged so that the main deck always moves horizontally in a vertical direction when the support boom tilts in the up and down direction. Characterized in that the second auxiliary cylinder and the fluid pressure cylinder for adjusting the left and right of the deck are interlocked so as to move the main deck in parallel when the support boom reciprocates in the horizontal direction. Scaffolding for high-altitude work in industrial vehicles.