JP2023022591A - Incline device - Google Patents

Abstract

To provide an incline device that ensures sufficient workability without narrowing work space.SOLUTION: An incline device comprises a work truck 2 disposed on a rail member 13 laid on an incline plane so as to be movable along the rail member in the inclination direction, a plurality of engagement parts 131 provided at prescribed intervals in the longitudinal direction of the rail member 13, and a driving cylinder member 24 having one end connected to the work truck 2 and the other end detachably engaged with one of the engagement parts 131 to move the work truck 2 along the rail member 13 with expansion or contraction of the cylinder member.SELECTED DRAWING: Figure 4

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incline device, and more particularly to an incline device that can be suitably used for replacement work of penstocks in hydroelectric power plants.

The incline device is used for constructing a structure on a slope by using a crane or the like installed on the work trolley, which is provided with a work trolley whose bottom is inclined so that the platform is horizontal so that it can move along the slope. used for In this case, for example, as shown in Patent Document 1, the work trolley is driven to move by meshing a pinion on the work trolley side with a rack track provided on a slope, or as shown in Patent Document 2, a wire attached to a pulley. One end of the rope is attached to a work cart, and the wire rope is winched to move the work cart up the slope.

JP 2004-36693 Japanese Patent Laid-Open No. 11-158842

However, in a structure where a work trolley is placed directly above the penstock for replacement work, etc., if the work trolley is driven using conventional racks and pinions and wire ropes, the rack frame and wire As a result of narrowing the work space for a crane or the like provided on the work cart by the rope, there is a problem that workability is impaired.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an incline device that does not narrow the working space and ensures sufficient workability.

In order to achieve the above object, in the first invention, a work truck (2) is disposed on a rail member (13) laid on an inclined surface so as to be movable in the inclined direction along the rail member (13); A plurality of locking portions (131) provided at predetermined intervals in the longitudinal direction of the member (13), one end of which is coupled to the work vehicle (2) and the other end of which is connected to one of the locking portions (131). and a drive cylinder member (24) detachably engaged to move the work truck (2) along the rail member (13) as it expands or contracts.

According to the first aspect of the present invention, the work vehicle can be moved by locking the other end of the driving cylinder member to one of the locking portions and extending or contracting the driving cylinder member. Therefore, since the work space for a crane or the like provided on the work vehicle is not narrowed by the rack frame or the wire rope as in the conventional case, good workability can be maintained. In addition, since the drive cylinder member is engaged with the engaging portion during and after the movement of the work vehicle, the work vehicle can be reliably positioned even when a heavy object is to be suspended. .

In the second aspect of the invention, a carrier (3) is disposed on the rail member (13) below the work carrier (2) so as to be movable along the rail member (13) in an inclined direction. is provided with sheaves (41, 42) at left and right positions in the width direction thereof, and a balance arm (47) swingable about the center of the width direction of the work truck (2) as a fulcrum (471), and a hoisting device (5) After the pair of wire ropes (51, 52) extending from the above are suspended on the left and right sheaves (41, 42) of the work vehicle (2), respectively, the sheaves (43, 43, 43, 43, 43, 43, 43, 44) to the work vehicle (2) and positioned on the opposite side in the width direction to the sheaves (41, 42) on which the wire ropes (51, 52) are suspended. They are respectively connected to ends (472, 473) of arm (47).

According to the second aspect of the invention, even if the amounts of the two wire ropes paid out or hoisted up by the hoisting device for the pair of wire ropes become unbalanced, the balance arm is tilted accordingly, and the balance arm is tilted accordingly. Since the fulcrum is positioned at the widthwise center of the work vehicle, no torsional force acts on the work vehicle.

The symbols in parentheses above refer to the corresponding relationship with specific means described in the embodiments described later.

As described above, according to the incline device of the present invention, sufficient workability is ensured without narrowing the working space.

1 is an overall side view of an incline device; FIG. 1 is an overall plan view of an incline device; FIG. It is a front view of a work vehicle. FIG. 2 is an enlarged view of the front end portion of the work vehicle, and is an enlarged view of part A in FIG. 1; It is a front view of a carrier. It is a top view which shows the connection structure of a work vehicle and a conveyance vehicle. It is the perspective view which looked at the winch from one side. It is the perspective view which looked at the winch from the other side. FIG. 3 is a partial side view of the incline device showing the arrangement of a control panel, sensors, etc., showing a state in which the work vehicle and the carrier vehicle are separated from each other.

The embodiments described below are merely examples, and various design improvements made by those skilled in the art are also included in the scope of the present invention without departing from the gist of the present invention.

In this embodiment, the case where the incline device is used for replacement work of penstocks in a hydroelectric power plant will be described. FIG. 1 is an overall side view of the incline device, and FIG. 2 is an overall plan view thereof. The left and right legs 11 and 12 of the same height are positioned in the gap between the three inclined penstocks P1 to P3 (see FIG. 3), and both legs 11 and 12 are connected on the central penstock P2. A pedestal 1 is installed, and rail members 13 are provided on the left and right legs 11 and 12 to extend in the longitudinal direction while being inclined along the penstocks P1 to P3.

The incline device is provided with a working cart 2 on which a jib crane 21 is mounted, and a transport cart 3 positioned below the work cart 3 for carrying penstocks P4 and the like cut to a predetermined length on the table. ing. The work truck 2 has a substantially right-angled triangle shape in side view (FIG. 1) and a substantially square shape in plan view (FIG. 2), and is mounted on rail members 13 via wheels 23 provided on inclined bottom beams 22. (Fig. 3). As shown in FIG. 1, a jib crane 21 having an arm (jib) 211 extended sideways is mounted on a substantially horizontal platform. A sling 212 (FIG. 1) provided at the tip of a swinging jib 211 can lift and move a penstock P4 or the like of a predetermined length.

Here, FIG. 4 shows an enlarged view of the front end portion (A portion of FIG. 1) of the work vehicle 2. As shown in FIG. In FIG. 4, a base end of a hydraulic cylinder 24 as a driving cylinder member is coupled to both sides (only one side is shown) of the front end of the work vehicle 2 so as to be vertically rotatable. The distal end of the rod 241 of the hydraulic cylinder 24 is coupled to a large number of locking holes 131 as locking portions provided at regular intervals in the longitudinal direction of the rail member 13 by pins 242 that can be inserted and removed manually or automatically.

In this state, the rod 241 of the hydraulic cylinder 24 is extended and the tip of the rod is pin-connected to a suitable locking hole 131. After that, the rod 241 is contracted to pull the entire work truck 2 and move it obliquely upward. can. By repeating the process of canceling the pin connection, extending the rod 241, reconnecting the pin, and contracting the rod 241, the work vehicle 2 can be moved obliquely upward along the rail member 13. By repeating the process of canceling the pin connection, contracting the rod 241, reconnecting the pin, and extending the rod 241, the work vehicle 2 can be moved obliquely downward along the rail member 13. .

In FIG. 4, an arm-shaped escape prevention member 25 is coupled to the rear end of a stay 231 that holds a pair of front wheels 23 so as to be rotatable in the vertical direction. A triangular locking claw 251 is formed at the tip of the escape prevention member 25 toward the pedestal 1 below. The tip of the rod of the cylinder 252 is connected, and by extending the rod, the escape prevention member 25 is rotated downward (from the state of the chain line in FIG. By engaging with the portion, the work vehicle 2 is prevented from running away (dropping).

One end of a jack member 26 is connected to the front end of the work vehicle 2, and by pin-connecting the tip of the jack member 26 to a suitable locking hole 131, the work vehicle 2 can be prevented from running away. . When the pin connection of the tip of the rod 241 of the hydraulic cylinder 24 is to be released, the tip locking claw 251 of the escape prevention member 25 is engaged, and the tip of the jack member 26 is pin-connected to the locking hole 131. By doing so, the work truck 2 is surely prevented from running away (falling). Note that the jack member 26 does not necessarily have to be provided.

As with the work cart 2, the carriage 3 has a substantially right triangle shape in side view (FIG. 1) and a substantially quadrilateral shape in plan view (FIG. 2). (Fig. 5). A hydraulic iron pipe P4 or the like cut into a predetermined length can be placed on the substantially horizontal platform of the carriage 3 . In such a carriage 3, an arm-shaped escape prevention member 33 similar to that provided in the work carriage 2 is provided at the rear end of a stay that holds the front wheels 32 (see FIG. 9). An emergency brake 34 is provided at an intermediate position of the rail member 13 so as to sandwich plates installed along the rail member 13 from both sides (see FIGS. 9 and 5).

Such a transport vehicle 3 has a pair of sheaves 41 and 42 (FIG. 2) provided on the lower surface of the bottom beam 22 of the work vehicle 2 at left and right positions in the vehicle width direction, and a pair of sheaves 41 and 42 (FIG. 2) provided at the front end of the bottom beam 31 of the transport vehicle 3 in the vehicle width direction. A pair of wire ropes 51, 52 are bridged between a pair of sheaves 43, 44 provided at the left and right positions of the work vehicle 2 so as to be movable relative thereto. The connection structure will be described in detail in FIG.

A pair of sheaves 41 and 42 of the work truck 2 are provided in symmetrical positions with respect to a center line 1 in the width direction of the truck. 47 is provided. The balance arm 47 is swingable in a plane along the bottom beam 22 (FIG. 1) of the work vehicle 2 around its center fulcrum 471, and the fulcrum 471 is located on the center line 1. A pair of sheaves 43 and 44 of the carrier carriage 3 are provided in laterally symmetrical positions with respect to the center line 2 in the width direction of the carriage, respectively, inside the sheaves 41 and 42, and the center line 2 is aligned with the center line 2. matches 1. Here, the sheaves 43 and 44 are constructed by stacking pulley bodies of the same diameter that are rotatable independently of each other vertically (perpendicular to the plane of FIG. 6).

A pair of wire ropes 51 and 52 extending from a winch 5 (see FIG. 7) as a hoisting device, the details of which will be described later, extend through guides 511 and 521 to the work vehicle 2 in parallel with the left and right rail members 13, respectively. , 42, they each turn back toward the carriage 3. As shown in FIG. One of the wire ropes 51 folded back to the carriage 3 is stretched over the upper pulley bodies of the left and right sheaves 43 and 44 and returns to the work carriage 2 again, and is separated from the sheave 41 on which the wire rope 51 is suspended in the width direction. It is connected via the load sensor 45 to one end 472 of the balance arm 47 located on the left and right opposite sides. In addition, the other wire rope 52 that has been folded back onto the carriage 3 is stretched over the lower side pulleys (not shown) of the left and right sheaves 43 and 44 and returns toward the work carriage 2 again. The balance arm 47 is connected via the load sensor 46 to the other end 473 of the balance arm 47 located on the opposite side in the width direction from the suspended sheave 42 .

FIG. 7 shows a perspective view of the winch 5 viewed from one side, and FIG. 8 shows a perspective view of the winch viewed from the other side. The winch 5 is provided with a pair of front and rear drums 53, 54 having the same diameter, and the pair of wire ropes 51, 52 are wound around the respective drums 53, 54 in opposite directions and pulled out. Flange gears 531 and 541 fixed to one ends of the two drums 53 and 54 are engaged with each other, and the rotating shaft of one drum 54 is connected to a drive motor 56 via a speed reducer 55 . When the drum 54 is rotated forward (arrow in FIG. 7) by the drive motor 56, the drum 53 is reversed and the wire ropes 51 and 5 are let out from the drums 53 and 54 by the same amount. When the driving motor 56 rotates the drum 54 in the reverse direction and rotates the drum 53 in the normal direction, both the wire ropes 51 and 52 are wound up by the same amount. An emergency hydraulic brake 57 is attached to the drum 54 . Incidentally, if a gear is further meshed between the flange gears 531, 541 of both drums 53, 54, both drums 53, 54 can be rotated in the same direction.

In FIG. 6 , when the pair of wire ropes 51 and 52 are let out, the carriage 3 descends along the rail member 13 inclined by its own weight so as to be separated from the work carriage 2 . Conversely, when the wire ropes 51 and 52 are hoisted up, the carriage 3 rises along the inclined rail member 13 against its own weight so as to approach the work carriage 2 .

When the pair of wire ropes 51 and 52 are paid out or hoisted, if for some reason the amount of payout or hoisting of the wire ropes 51 and 52 becomes unbalanced, the balance arm 47 is tilted accordingly, but the fulcrum 471 of the balance arm 47 is tilted accordingly. Since it is located in the center of the work truck 2, no torsional force acts on the work truck 2. - 特許庁Even if one of the wire ropes 51 and 52 breaks for some reason, the balance arm 47 turns to a posture along the center line, so no torsional force acts on the work vehicle 2 in this case as well.

Fig. 9 shows the layout of the control panel and sensors. A work trolley control panel 61 is provided at the front end of the work trolley 2, and the work trolley 2 is moved by controlling the operation of the hydraulic cylinder 24 and the escape prevention member 25 here. The operations of the hydraulic cylinder 24 and the escape prevention member 25 are monitored by monitoring televisions 62 and 63, respectively.

A winch control panel 64 is provided at the rear end of the platform of the work vehicle 2, and controls the normal/reverse rotation of the drums 53 and 54 of the winch 5 to move the transport vehicle 3 up and down. Here, an upper limit stop photoelectric sensor 65 and an upper limit deceleration photoelectric sensor 66 are provided so as to follow along the rail member 13 from the rear end of the work vehicle 2 at a predetermined distance. A photoelectric sensor 67 for lower limit stop and a photoelectric sensor 68 for lower limit deceleration are provided at the lower end of each. These photoelectric sensors 65 to 68 and reflectors 311 and 312 provided on the bottom surfaces of the bottom beams 31 of the carriage 3 cause excessive vibrations with respect to the carriage 2 or the lower end of the rail when the carriage 3 is raised and lowered. prevented from approaching.

When excessive loads are detected by the load sensors 45 and 46 provided on the wire ropes 51 and 52, the operation of the winch 5 is stopped as the load on the carriage 3 is excessive. On the other hand, when the load detected by the load sensors 45, 46 is too small or becomes zero, it is assumed that the wire ropes 51, 52 are loosened or broken, and the winch 5 is not operated in this case as well. be stopped. A speed detection encoder is attached to the rear wheel 32 of the carriage 3, and when the detected speed becomes excessive, the carriage 3 begins to fall due to the disconnection of both wire ropes 51 and 52. to operate the emergency brake 34. The emergency brake 34 is designed to operate when the power is turned off.

A carriage control panel 69 is provided at the front end of the platform of the carriage 3, and the escape prevention member 33 and the emergency brake 34 can be operated here.

(Other embodiments)
In the above embodiment, the case where the incline device of the present invention is used for replacement work of penstocks in a hydroelectric power station has been described, but the scope of application of the present invention is not limited to this.

In the above embodiment, the locking holes 131 do not have to be formed directly in the rail member 13, and may be formed in another member along the rail member 13 at predetermined intervals in the longitudinal direction. Further, it is not always necessary to use the locking hole 131 for attaching and detaching the pin 242, and other locking structure can be used.

The sheaves 43 and 44 of the carriage 3 do not necessarily have to be provided in pairs on the left and right sides, and may be provided in the center.

In the above embodiment, the work trolley is moved by means of a hydraulic cylinder, but when used in combination with a transport trolley that is moved by a wire rope laid between it and the work trolley, movement of the work trolley is required. A drive structure is not specifically limited.

DESCRIPTION OF SYMBOLS 1... Mounting frame 13... Rail member 131... Locking part 2... Work cart 24... Hydraulic cylinder (driving cylinder member) 3... Carrier 41, 42... Sheave 43, 44... Sheave 47... Balance Arm 471 fulcrum 472, 473 end 5 winch (hoisting device) 51, 52 wire rope.

Claims (2)

A work vehicle arranged on a rail member laid on an inclined surface so as to be movable in the inclined direction along the rail member; a driving cylinder member which is connected to the work vehicle and whose other end is detachably locked to one of the locking portions so as to move the work vehicle along the rail member as it expands or contracts; Incline device. A transport vehicle is disposed on the rail member below the work vehicle so as to be movable in an inclined direction along the rail member, and the work vehicle is provided with sheaves at left and right positions in the width direction of the work vehicle and in the width direction of the work vehicle. A swingable balance arm is provided with the center as a fulcrum, and a pair of wire ropes extending from the hoisting device are suspended on the left and right sheaves of the work vehicle, respectively, and then passed through the sheaves provided on the transport vehicle. 2. The incline device according to claim 1, wherein the balance arms are returned to the work vehicle and connected to ends of the balance arms located on opposite sides in the width direction from the sheave on which the wire rope is suspended. .

Images