JPH08295272A - Wall surface working carriage car - Google Patents

Abstract

PURPOSE: To improve the working properties for measurements and so on in making it free of traveling on a wall surface safely by means of remote control by attaching a wheel to a wheel support leg being rotatable in the longitudinal direction of traveling in time of getting over an obstacle, and making this rotated wheel support leg free of restoration by dint of spring force, while having the wheel built-in with a magnet. CONSTITUTION: A friction winch 51, rotating a drum wheel wrapped with a net or the like spread over a wall surface and making a car body travel along the wall surface, is mounted on a car body 10 mounted with a working apparatus 60. Each four-set of wheels 21 and wheel support legs 24 are installed in both front and rear bodies 12 and 11 of the car body 10, and each magnet 70 is built in each wheel 21. Each wheel support leg 24 is made free of rotation in the longitudinal direction around a turning shaft 27, and when the wheel 21 hit on an obstacle 92 or the like, the wheel support leg 24 turns rearward in the traveling direction, whereby it gets over this obstacle 92, namely, it becomes shiftable freely. After clearing this obstacle 92, the wheel support legs 24 are restored in the original state by action of a return spring 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall work trolley used for maintenance work on steel wall surfaces, such as measuring the state of the wall surface of a steel structure such as a steel chimney or a steel tank having a high height. It is about.

[0002]

2. Description of the Related Art FIG. 3 is a side view showing a conventional maintenance procedure for a wall surface of a high place such as a chimney. Wall 90 such as chimney
The lifting device 50 gripped by winding a wire rope 59 that is hung from the top of the trolley and the like is driven to rotate to move the gondola 19 up and down. Using wall 9
Measure the dents and deformations of 1. Further, the plate thickness of the wall surface 91 is measured using an ultrasonic plate thickness meter or the like. By such work, the secular change of the wall body 90 is investigated, and repairs are performed if necessary. Reference numeral 92 is a jack-up ring when the wall body 90 is constructed, and 93 is a weld bead.

[0003]

Although the conventional method of wall surface work is as described above, there is a risk of falling because the worker rides on the gondola 19 and goes up to a high place. In order to absolutely prevent this danger, there is a problem that the wire rope 59, the gondola 19, the elevating device 50, etc. must be carefully prepared for the work.

The present invention has been made in order to solve the above problems, and an object thereof is to obtain a wall surface work trolley capable of safely performing a work such as measurement of a wall surface by a remote operation without an operator boarding. And

[0005]

SUMMARY OF THE INVENTION A wall work trolley according to the present invention comprises a vehicle body on which working equipment is mounted, and a body wheel wound with a rope or a rope stretched around a steel wall surface. A friction winch provided on the vehicle body so that the vehicle body can be moved along the wall surface, and a friction winch supported on the wall surface so as to be rotatable in forward and backward directions so as to be able to get over an obstacle. A wheel supporting leg, a wheel attached to the wheel supporting leg, a supporting leg restoring means for restoring the rotated wheel supporting leg by a spring force, and a magnet built in the wheel so as to be attracted to the wall surface. It is equipped with. Further, the magnet is provided rotatably fitted to the axle of the wheel so as to maintain a minute gap between the magnet and the inner peripheral surface of the wheel. Further, the lateral mounting angle of the wheel supporting leg mounted on the vehicle body can be changed and adjusted. Further, the vehicle body is divided into a front vehicle body and a rear vehicle body, and a direction angle of the front vehicle body with respect to the rear vehicle body can be remotely changed.

[0006]

The body of the wall work trolley according to the present invention is moved up and down along the wall surface by winding a rope or rope stretched on the wall surface around the body wheel of the friction winch and rotating it remotely. The wheel support leg is rotatable in the front-rear direction and is restored by the force of the spring, so that the obstacle on the wall surface can be overcome. The magnet built into the wheel is attracted to the wall surface. As a result, the work device can be fixed on the wall surface without being shaken by wind or the like, and can be operated by the installed work equipment. Further, when the magnet is provided by being freely rotatably fitted to the axle of the wheel, even if the wheel rotates and the vehicle body moves, the magnet rotates and is attracted to the wall surface smoothly.
Also, if the lateral mounting angle of the wheel support leg can be changed and adjusted, even on a non-planar wall surface such as a chimney, the wheel can be made perpendicular to the wall surface, and the attractive force of the magnet is not impaired. . Also, if the front body and the rear body are divided and the direction angle of the front body can be changed, the traveling direction of the body can be changed by remote control, and the desired position can be two-dimensionally set on the wall surface. This wall work trolley can be made to go and work can be performed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a side view, (B) is a plan view, and (C) is a front view showing a wall work trolley according to an embodiment of the present invention. FIG. 2 shows a wheel and a wheel supporting leg, (A) is a side view, and (B) is a front sectional view. 1 and 2, reference numeral 10 denotes a vehicle body, and the vehicle body 10 shown in FIG. 1 includes a rear (main body) vehicle body 11 and a front vehicle body 12, and the front vehicle body 12 is connected to the rear vehicle body 11 by a turning shaft 16. The pinion 13 driven by the turning motor 15 is rotated to the front vehicle body 1.
A rack 14 provided on the rear vehicle body 11 is provided on the rear vehicle body 11 and is engaged with the pinion 13. The turning motor 15 is rotated and stopped in both directions according to a command from the ground.
As shown in FIG. 1, four sets are provided on the rear vehicle body 11, and the front vehicle body 12 is provided.
4 sets of wheels 21 and wheel support legs 24 are attached and provided.

As shown in FIG. 2, the wheel 21 has a cylindrical shape with a thin circumferential portion, and both ends thereof are supported by a lower portion of the wheel support leg 24 and a wheel shaft support member 26 fixed to the wheel support leg 24. It is rotatably supported by the wheel shaft 22. The wheel support leg 24 has a support leg rotation shaft 27 fixed to the upper portion of the wheel support leg 24 pivotally supported by a support leg bearing 25, and is attached to the support leg attachment member 23 so as to be rotatable in the forward and backward directions. There is. The support leg attachment member 23 has a bolt hole 2 formed in an oval shape.
By 3a and 23b, it is attached to the vehicle body 10 so that the lateral attachment angle can be changed and adjusted. On the upper part of the wheel support leg 24, there are rollers 31, supported by roller shafts 33, 34 at the same height position before and after the support leg rotation shaft 27.
32 is provided. Further, an upper plate 37 and a guide cylinder 37c fixed to the support leg mounting member 23 are provided, and the guide cylinder 3 is provided.
A lower plate 36 having a guide rod 36r that is loosely fitted in the axial direction so as to freely move in the axial direction is provided inside 7c, and a restoring spring 35 that pushes the lower plate 36 downward in the axial direction is provided. In a normal state, the wheel support leg 24 rotatably supported by the support leg bearing 25 that supports the support leg rotation shaft 27, as shown in FIG.
Since the lower surface of the lower plate 36 that is pushed down by the restoring spring 35 contacts the rollers 31 and 32, the wheel support leg 24 is fixed to the vehicle body 10.
And is in a posture perpendicular to the wall surface 91.

As shown in FIG. 1, on the rear surface of the rear vehicle body 11, a friction winch 51 comprising a body wheel 53 as an elevating device and an elevating motor 52 for rotationally driving the body wheel 53.
Is provided. The body ring 53 is formed such that a wire rope 59 is wound around the body wheel 53 to obtain a frictional force capable of suspending the wall surface work cart with a sufficient safety factor. The wire rope 59 is firmly attached to the top of the wall 90 and is provided so as to hang down. The elevating motor 52 can be operated for forward rotation, reverse rotation, and stop by remote control from the ground. The brake is automatically applied when stopped.

In FIG. 1, reference numeral 60 denotes a device for measuring the uneven deformation of the surface of the wall surface 91 and the plate thickness, for example, a measuring instrument such as a plate thickness meter, a distance meter, a displacement meter using ultrasonic waves, or other work. It is a device and is attached to the abdomen of the rear vehicle body 11 toward the wall surface 91. The work equipment 60 performs work such as measurement according to an operation command from the ground.

In FIG. 2, 70 is a magnet, which is used for the wheel 2
It is provided on the inner side of 1 by a magnet support member 75 so as to be rotatably supported by the wheel shaft 22. The portion of the magnet 70 near the inner circumference of the wheel 21 is a pole, and the surface of the pole and the wheel 2
It is formed so as to have a gap as small as possible between the inner peripheral surface of the first member 1 and the inner peripheral surface thereof. In order to obtain a strong attraction force by the magnet 70, the thickness of the circumferential portion of the wheel 21 is formed as thin as possible, and the distance between the pole of the magnet 70 and the wall surface 91 is formed as small as possible.

Next, the operation of the embodiment shown in FIGS. 1 and 2 will be described. As shown in FIG. 1, a wire rope 59 which is hung from the top of the wall 90 and stretched is provided on the body ring 53.
The wall work cart is suspended by the frictional force of the body wheel 53 against the wire rope 59. If the lifting motor 52 is rotated to one side by remote control, the body ring 53
Takes up the wire rope 59 and raises the wall surface work cart along the wall surface 91. When the raising / lowering motor 52 is rotated to the other side, the body wheel 53 unwinds the wire rope 59 and lowers the wall surface work carriage along the wall surface 91. When the raising / lowering motor 52 is stopped, the brake is automatically applied so that it does not fall unintentionally.

As shown in FIG. 2, a magnet 70 is provided in the wheel 21.
When the wall surface work cart moves along the wall surface 91, the magnet 70 is attracted to the wall surface 91, so that the eight wheels 21 come into contact with the wall surface 91 by the attraction force of the magnet 70. . Therefore, even if a certain amount of wind blows at a high place, the wall surface work cart is prevented from being shaken. As a result, the wall surface work carriage can be stopped at a desired position on the wall surface 91, and the work device 60 can stably perform work such as measurement.

As shown in FIG. 3, the wall 90 has obstacles such as a jack-up ring 92 and a weld bead 93. This wall work trolley has a structure as shown in FIGS. 1 and 2.
Since the wheel support legs 24 can be rotated in the forward and backward directions by the support leg bearings 25, when this wall work truck moves (ascends or descends) and a certain wheel 21 hits an obstacle 92 or the like, the wheel 21 moves. When the wheel support leg 24 is pushed by the obstacle 92 or the like, the wheel support leg 24 rotates around the support leg rotation shaft 27, and the wheel 21 rides on the obstacle 92 and moves. When the wheel support leg 24 rotates about the support leg rotation shaft 27, one roller 32 also rotates about the support leg rotation shaft 27 and rises, as shown in FIG. Push up the lower plate 36. Lower plate 36
Since the pressing force is applied by the elastic force of the restoring spring 35, the restoring spring 35 compresses and rises. Wheel 21
When the vehicle has passed over the obstacle 92, the force for pushing up and rotating the wheel support leg 24 disappears, the roller 32 is pushed down by the restoring spring 35, and the wheel support leg 24 is restored to the original state. While one wheel 21 is passing over the obstacle 92, the other wheel 21 is normally rotating and running, so that it is possible to stop and perform work such as measurement even when passing over the obstacle. When the wheel 21 is rotated in the direction opposite to the direction shown in FIG. 2A, the roller 31 compresses the restoring spring 35 and similarly performs the restoring operation.

As shown in FIG. 1, the vehicle body 10 is a front vehicle body 1.
When divided into two and the rear vehicle body 11, they are connected by the turning shaft 16, the turning motor 15 is rotationally driven by remote control to rotationally drive the pinion 13 that meshes with the rack 14, and thus the rear vehicle body 11 is driven. On the other hand, the direction of the front vehicle body 12 can be changed around the turning shaft 16. That is, the traveling direction of the wall surface work cart can be arbitrarily changed by remote control. As a result, it is possible to cause the wall surface work cart to go to a desired position on the wall surface 91 in a two-dimensional manner to perform work.

As shown in FIG. 2B, the wheel support leg 24
Bolt holes 23a and / or 23b through which bolts for attaching the support leg attachment material 23 to which the
By forming the oval shape, the lateral mounting angle of the wheel support leg 24 can be changed and adjusted as indicated by θ. As a result, as shown in FIG. 1C, the wheel 21 can be brought into vertical contact with the wall surface 91 having a curved surface such as a chimney, and the attraction force of the magnet 70 is not impaired. The effect is obtained.

In the embodiment shown in FIG. 2, the magnet 70 is rotatably attached to the wheel shaft 22 by the magnet support member 75. However, if the wheel 21 is made of a hard magnetic material, it may be magnetized strongly. It is also possible to make the wheel 21 itself a magnet by means of making a divided shape of the wheel 21 with a magnet and adhering these to obtain one wheel 21. If the wheels 21 themselves are magnetized in this way, the wall surface 91
Since it is in direct contact with, a large adsorption force is obtained. But,
Since the attraction force is large when the magnetic poles contact the wall surface 91 and the attraction force is small when the magnetic poles contact the wall surface 91 between the magnetic poles, the wheels 21 may not rotate smoothly. In the embodiment shown in FIG. 2, since there is a gap between the magnet 70 and the wall surface 91, the attracting force is reduced, but since the attracting force does not change even when rotating, the wheels 21 rotate smoothly.

Further, the wall surface 91 to be worked by the wall work trolley according to the present invention is made of steel, but if it is not a magnetic material such as steel, it is attracted by the magnet 70 to position the wall work trolley. This is because the effect of stabilizing is not obtained. However, the wall surface 91 is not a magnetic body, and the magnet 7
Even if the adsorption action by 0 is not obtained, the wall work platform according to the present invention can be effectively used depending on conditions such as no wind.

The wall work trolley according to the present invention uses, for example, a friction winch as the elevating and lowering drive means, but it is also possible to use an ordinary winch instead of the friction winch. However, the present invention is not limited to the above description, and various design changes can be made without departing from the scope of the present invention.

[0020]

As described above, according to the present invention, the wall surface can be freely moved up and down by the friction winch, the wheel supporting legs can be rotated, and the wheel supporting leg restoring means restores them to overcome obstacles. Therefore, it is possible to safely perform work such as measurement of the wall surface by remote operation without being attracted to the wall surface by the magnet and being shaken by wind or the like.

[Brief description of drawings]

1A and 1B show a wall work truck according to an embodiment of the present invention, FIG. 1A is a side view, FIG. 1B is a plan view, and FIG. 1C is a front view.

FIG. 2 shows a wheel, a wheel supporting leg and a wheel supporting leg restoring means of a wall work truck according to an embodiment of the present invention, (A).
Is a side view and (B) is a front sectional view.

FIG. 3 is a side view showing a conventional wall surface working means.

[Explanation of symbols]

10: vehicle body, 11: rear vehicle body, 12: front vehicle body, 1
3: Pinion, 14: Rack, 15: Turning motor,
16: turning axis, 21: wheel, 22: wheel axis, 23:
Support leg mounting material, 23a, 23b: bolt holes, 24: wheel support legs, 25: support leg bearings, 26: wheel shaft support materials, 2
7: support leg rotation shaft, 30: wheel support leg restoring means, 31,
32: roller, 35: restoring spring, 36: lower plate, 36
r: guide rod, 37: upper plate, 37c: guide cylinder, 51: friction winch, 52: lifting motor, 53: body wheel, 59: wire rope, 60: work equipment, 70:
Magnet, 75: magnet support material, 90: wall body, 91: wall surface, 92: obstacle (ring for jack-up).

Front page continuation (72) Inventor Joji Daimaru 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima City Mitsubishi Heavy Industries Ltd. Hiroshima Works

Claims (4)

[Claims] 1. A vehicle body on which a working device is mounted and a body wheel wound around a steel wall extending around a rope or a rope are rotated to move the vehicle body along the wall surface. With a friction winch that can be operated remotely on the vehicle body,
A wheel supporting leg rotatably provided in a forward and backward direction of travel so as to be able to get over an obstacle on the wall surface, a wheel attached to the wheel supporting leg, and a force of a spring for the rotating wheel supporting leg. Support leg restoring means for restoring by
A wall surface work cart, comprising: a magnet built in the wheel so as to be attracted to the wall surface. 2. The wall surface work according to claim 1, wherein the magnet is rotatably fitted to the axle of the wheel so as to maintain a minute gap between the magnet and the inner peripheral surface of the wheel. Dolly. 3. The wall work truck according to claim 1, wherein a lateral mounting angle of the wheel supporting leg mounted on the vehicle body can be changed and adjusted. 4. The vehicle body is divided into a front vehicle body and a rear vehicle body, and the direction angle of the front vehicle body with respect to the rear vehicle body can be changed by remote control. Alternatively, the wall work truck according to claim 3.