JPH0719044U - Self-propelled wheels - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a drive wheel of a cleaning device that runs inside a water channel, a pipe, etc., and makes it possible to easily replace the reducer and the outer ring portion of the wheel to facilitate maintenance and repair. The purpose is to be able to maintain the overall environmental resistance. [Structure] For a wheel that is self-propelled in the cleaning target 1 such as a pipe,
A drive actuator (drive motor 12) and a speed reducer are directly connected to the inside thereof and are incorporated in a sealed state. The output shaft 13 of the drive motor 12 is connected to a wave generator hub 14 which is an input stage of the speed reducer, and transmits power to the speed reducer side. The flange portion 11 of the circular spline, which serves as the output portion of the reduction gear, is arranged on the reduction gear casings 8 and 9 side, and is connected to the outer ring portion 22 of the wheel so that it can be disassembled between the reduction gear output shaft and the wheel. Is configured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drive wheel of a cleaning device that travels inside a waterway or the like.

[0002]

[Prior art]

 3 and 4 show the invention of Japanese Patent Application No. 63-98329 filed by the applicant of the present application as an example of an in-pipe traveling device for traveling inside a waterway or pipe for cleaning work.

In FIGS. 3 and 4, reference numeral 1 denotes a pipe or a water channel to be cleaned by the cleaning device, and the in-pipe traveling device travels in the target pipe 1 by itself.

The drive wheel 102 is rotatably held by a support leg 103 attached to the main body of the in-pipe traveling device, and the driving force of a drive motor 105 attached to a drive unit case 104 of the device is changed by a gear 106, It is transmitted to the drive wheels 102 via transmission elements 110 and 111 such as chains or gears via a reduction gear 107 and a differential gear mechanism 108, and the traveling device travels inside the pipes along the inner wall of the target pipe 1.

[0005]

[Problems to be solved by the device]

 By the way, in the example of the conventional wheel as described above, the power transmission element installed in the in-pipe traveling device has a structure that comes into contact with the internal atmosphere of the water channel, pipe, etc. There is a problem that the material of the constituent elements is restricted, resulting in an expensive device and the inability to maintain environment resistance.

Further, in an apparatus in which it is essential to maintain environment resistance, a method of wrapping the power transmission mechanism in a case having environment resistance is also used, but sealing of the penetration part of the output shaft is a problem. In addition, since the structure becomes complicated, there were problems such as being expensive and making it difficult to replace the wheels (such as when worn).

The present invention solves the above-mentioned problems of the prior art, and provides a self-propelled (driving) wheel which has a simple mechanism and is inexpensive, is easy to maintain environment resistance, and is easy to replace wheels. That is the purpose.

[0008]

[Means for Solving the Problems]

 As a configuration for achieving the above object, the self-propelled wheel of the present invention constitutes a compact drive unit by directly connecting a drive actuator and a speed reducer, which is sealed inside the wheel. The output of the reducer is taken from the case side of the reducer and connected to the outer ring of the wheel so that the outer ring of the wheel encloses the reducer. The feature is that it can be disassembled between and.

[0009]

[Action]

 The self-propelled wheel of the present invention configured as described above has a drive actuator and a drive actuator so that the reducer and the outer ring portion of the wheel can be easily replaced and the environment resistance of the entire wheel can be maintained. The structure is such that a seal member is installed so that the reduction gear section directly connected to this is in a sealed state, and it is possible to prevent the environmental fluid existing inside the waterways, pipes, etc. from directly touching the reduction gear member and to reduce the output of the reduction gear. The structure that can be disassembled between the shaft and the wheels facilitates replacement when the wheels are worn.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a self-propelled wheel according to an embodiment of the present invention, and FIG. 2 is a side view of the same.

In these drawings, reference numeral 1 denotes a pipe or a water channel, and the wheel of the present invention runs inside the wall thereof. Reference numeral 2 is a base of the in-pipe traveling device to which the wheel 1 is attached, and a support plate A (3) and a support plate B (4) are fixed to the base 2, and the support plates A (3) and (4) are respectively attached to the bearing plate A ( 5) and B (6) are attached.

Bearings A are mounted on the outer circumferences of the bearing plate A (5) and the bearing plate B (6), and cases A (8) and B (9) face each other on the outer circumference of the bearing 7. It is installed. Between the cases A (8) and B (9), a flange portion 11 of the circular spline which is the output of the speed reducer is sandwiched and integrated.

A drive motor (hydraulic motor in this embodiment) 12 is attached to one end of one bearing plate A (5), and its output shaft 13 is connected to a wave generator hub 14 which is an input stage of the reduction gear. It is connected and transmits power to the reducer side.

The flange portion 15 of the flexspline, which is rotated by the rotation of the wave generator of the reduction gear, is fixed to the other bearing plate B (6) using a fixing flange 16 to support the reaction force of the output of the speed reducer. .

Bearings 17 are mounted on the outer peripheral portions of both ends of the wave generator hub 14, and are supported by the bearing plate A (5) and the fixed flange 6, respectively.

The speed reducer is composed of a circular spline flange portion 11, a wave generator hub 14, and a flexspline flange portion 15. Since this speed reducer has a known structure which is commercially available, detailed description thereof will be omitted.

On the other hand, seal cases A (18) and B (19) are attached to the cases A (8) and B (9), and a seal 20 is attached to each of the support plates A (3). , B (4) can be sealed with the ambient fluid existing inside the waterway / pipe, etc.

Further, an outer ring portion 22 of a vehicle wheel having a lining 21 made of rubber or the like is fixed to an outer peripheral portion of the case B (9).

A plug 23 is inserted in the fixing bolt hole portion of the case B (9) to prevent the atmosphere fluid from entering the flange portion 11 of the circular spline of the speed reducer along the bolt hole. I'm out. A cover 24 is attached to the outer end surface of the bearing plate B (6).

A fixed seal (O-ring or the like) is inserted in a portion such as a mating surface of each component where it is necessary to prevent entry of atmospheric fluid. (Between 3 and 5, 4 and 6, 5 and 12, 6 and 24, 8 and 18, 9 and 19, 9 and 23, 8 and 22, 9 and 22)

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various design changes can be made within the scope of the technical idea of the present invention. Both belong to the technical scope of the present invention.

[0022]

[Effect of device]

 As described above, the self-propelled (drive) wheel of the present invention has a speed reducer and a motor built-in, the wheel having environment resistance is configured compactly, and a special environment resistance member is used as a speed reducer. Since it is not necessary to use it, it can be provided at low cost as a whole.

Further, since the output part of the reduction gear is on the case side and the outer ring member of the wheel is configured to enclose the case, it is easy to perform maintenance and repair such as replacement when the outer ring member is worn.

[Brief description of drawings]

FIG. 1 is a sectional view of a self-propelled wheel according to an embodiment of the present invention.

FIG. 2 is a side view of the wheels of the embodiment.

FIG. 3 is a partially cutaway side view of a conventional self-propelled wheel.

FIG. 4 is a view taken along the line AA of FIG.

[Explanation of symbols]

 1 Pipe, Water Channel, etc. (Object) 2 Base 3 Support Plate A 4 Support Plate B 5 Bearing Plate A 6 Bearing Plate B 7 Bearing 8 Case A 9 Case B 11 Circular Spline Flange 12 Drive Motor 13 Output Shaft 14 Wave Generator Hub 15 Flange part of flexspline 16 Fixed flange 18 Seal case A 19 Seal case B 21 Lining part 22 Outer ring part

Claims (1)

[Scope of utility model registration request] 1. A self-propelled drive wheel that travels inside a waterway, a pipe, etc., in which a drive unit including a drive actuator and a speed reducer directly connected to the actuator is hermetically incorporated in the wheel, and The wheel is supported on the base of the in-pipe traveling device via a support plate, and the output part of the speed reducer is arranged on the case side of the speed reducer, which is connected to the outer ring part of the wheel to reduce the speed reducer output shaft and the wheel. A self-propelled wheel characterized in that it can be disassembled between and.