JPS5914389B2 - Track vehicle stability confirmation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for checking the stability of various track bundles, and the ground pressure of the left and right endless track tracks is measured at multiple points at required intervals in the longitudinal direction through the constituent single plates of the endless track tracks. At the same time, each measurement value is taken out (7) and can be displayed simultaneously in a distribution condition according to the measurement location, thereby making it possible to accurately and easily confirm the stability of the track bundle.

Even though the so-called crawler bundles, in which the running mechanism of bulldozers, crane vehicles, pile driver vehicles, etc. is an endless track type, are suitable for use on rough terrain, there are limits to their inclination, etc. If it leans beyond a certain point, it will fall.

In particular, when the center of gravity is high and the load distribution tends to be uneven, such as a crane truck or pile driver vehicle, and the direction of the uneven load changes due to the rotation of the main body on the tracked vehicle, it is necessary to Bearing strength is a particular problem, and if the ground condition is soft or has a large difference in hardness and softness, the balance is likely to collapse and become unstable, making it easy to topple over.

Therefore, it is necessary that the stability of the track bundle can be easily confirmed in relation to the conditions of the place where it is used.

One way to check the stability of such a track bundle is to first check the balance of the track bundle, but if the balance is lost, it is already in a dangerous state and there is no ability to predict the stability. Therefore, in the present invention, if the ground pressure, that is, the ground bearing capacity of the left and right endless track crawlers is approximately equal over the entire ground contact surface, the track bundle is stabilized, and the ground pressure of the endless track tracks is Focusing on the fact that the track bundle becomes unstable if there is a difference between the front and rear, left and right parts, etc., and the difference is large, we accurately measured the ground pressure of the endless track crawler at multiple locations, and measured the constant value of each $ and +1. By displaying the information according to the distribution of locations, the stability of the track bundle can be easily confirmed in relation to the location of use.

. Next, embodiments of the present invention will be described based on the drawings.

First, in FIG. 1, 1 is a track bundle of a bulldozer, etc., 2.
Reference numeral 2 denotes left and right endless track crawlers 3, 4 which constitute a traveling mechanism formed by connecting a large number of rigid single plates 2a, 2a such as steel plates in a link shape.
is one driving wheel at the front and rear.

Reference numeral 5 denotes guide rollers arranged vertically in parallel so as to be attached to the inner periphery of the endless track crawlers 2, 2, and this guide roller 5
As shown in the figure and Fig. 4, the supporting shaft 6 is
is supported by a support 8 protruding from the frame 7, and can sequentially support the constituent single plates 2a, 2a of the rotating endless track tracks 2, 2.

Therefore, the load of the track ratio is distributed and applied to the lower guide rollers 5 on the ground contact side.1. Since the load applied to the guide roller 5 is applied to the ground via the component veneer 2a corresponding to that part, the reaction force per unit area, that is, the bearing capacity of the ground, becomes equal to the ground pressure.

Therefore, in the track ratio 1 having the above-mentioned configuration, guides at multiple locations such as the support shaft 6 or the support 8 of the lower guide roller 5, which are located at required intervals in the front and rear direction in the left and right endless track tracks 2, 2, are provided. A ground pressure measuring means 9 is provided at the roller 5 portion to measure the ground pressure, that is, the bearing capacity of the earth, through each constituent single plate 2a, 2a.

The same applies whether the support 8 is provided individually for one guide roller 5 as shown in FIG. 5 or is continuous as shown in FIG. 6.

For example, for each of the left and right endless track tracks 2, 2,
A ground pressure measuring means 9 is provided at each supporting portion of a plurality of arbitrary guide rollers 5 at front and rear positions and intermediate positions thereof.

As the ground pressure measuring means 9, for example, a strain meter is used to measure the stress applied to the support shaft 6, a load cell is used to measure the load applied to the support shaft 6 or the support 8,
Furthermore, various implementations are possible, such as measuring the load applied to the guide roller 5 using a differential transformer.

In either case, the measured values by each measuring means 9 can be taken out electrically or mechanically using hydraulic pressure or the like.

In addition to the above, the measurement can be carried out by equipping the support portions of the front and rear drive wheels 3 and 4 with measuring means.

Furthermore, a measured value display means 10 is provided which can electrically or mechanically take out the measured values of ground pressure by each measuring means 9 and display each measured value in a distribution condition according to the arrangement of the measurement points.
Install it in an easily visible location such as the driver's cab.

The measured value display means 10 may be used to digitally display the measured values of the left and right endless track tracks 2, 2 in an arrangement according to the measurement location as shown in FIG.
As shown in FIG. 8, it is possible to convert each measurement value for the left and right endless track tracks 2, 2 into a graphic form in an analog manner and display the distribution according to the measurement location.

Furthermore, the measured values may be recorded and displayed.

In order to confirm the stability of the track ratio 1, as described above, the measurement means 9 installed on the plurality of guide rollers located at required time intervals in the longitudinal direction of the left and right endless track tracks 2, 2 are used to measure the stability of the left and right tracks. The ground pressure, that is, the bearing capacity of the ground is measured at a plurality of locations through the single plate 2a of the endless track crawler 2, and the measured value at each location is electrically taken out by the measurement value display means 10, and the measurement is performed according to the measurement location. The numbers indicating the measured values in the distribution situation are displayed as they are in Figure 7, or they are converted into figures such as curves and displayed in Figure 8. From this display, the ground pressure at each measurement point and the difference between them are displayed. All you need to do is determine and check the stability of the rate.

For example, if there is a large difference in the ground pressure, that is, the ground bearing capacity, of the endless track tracks 2, 2 on the left and right sides, this indicates that the track ratio 1 may lean toward the low ground pressure side on the left or right, and the ground pressure is still low between the front and rear tracks. If there is a large difference, this indicates that the track ratio 1 may lean toward the low ground pressure side, either front or rear.

Furthermore, the use of pile drivers and pile drivers may result in unbalanced loads, which can cause the ground pressure to become extremely high in some areas. If it exceeds the ultimate ground bearing capacity of

Also, if each measured value of ground pressure is less than the ultimate earth bearing capacity,
This shows that the track rate is stable.

Therefore, if the reference ground pressure and allowable ground pressure are determined in advance according to the bearing capacity of the ground, the stability of the track ratio can be easily determined based on the measured ground pressure at each location.

In particular, if each measurement value is displayed in analog form as shown in FIG. 8, it is possible to understand the ground pressure distribution state and its differences at a glance, making it easier to determine the stability.

As described above, according to the present invention, the ground pressure of the endless track crawler is measured at a plurality of locations at required intervals in the longitudinal direction through the rigid structural veneer, and each of the measurements is performed in accordance with the present invention. Since each value is taken out and each measured value is displayed simultaneously in letters or figures in a distribution situation according to the measurement location, the distribution of ground pressure for each of the left and right endless track tracks, in other words, for the entire track army. Conditions and their differences can be easily grasped at a glance, and combined with the fact that there is no change in the track rate load itself, it is possible to easily determine the stability of the track rate, and therefore the balance of the track rate is It is possible to easily confirm and predict the stability of a particular location before it collapses into a dangerous situation, and in the event of a danger, it is easily possible to stabilize it by moving the installation location.

In particular, in the present invention, a ground pressure measuring means is provided for measuring the ground pressure via a rigid constituent single plate of the endless track track at a plurality of arbitrary guide roller portions located at required intervals in the longitudinal direction of each of the left and right endless track tracks. Because of the arrangement, there is no side pipe hindrance to the endless rotation of the endless track track, and the ground pressure applied to each guide roller is due to the special structure of the endless track track, which is made up of a large number of connected single plates. This makes it possible to measure the ground pressure individually through each of the component veneers mentioned above, and to measure the ground pressure on a plate surface with a certain area depending on the component veneer, making it easy to accurately measure the ground pressure corresponding to the hardness and softness of the ground. It can be easily measured and compared with soil bearing capacity.

Therefore, the measured values from each measuring means can be displayed in a distribution according to the measurement location using a measured value display means separately installed in the driver's cab, etc., and the ground pressure of each part of the entire ground contact surface can be displayed simultaneously. It is easy to compare and confirm, and it is easy to determine the stability of a tracked vehicle.

[Brief explanation of the drawing]

Fig. 1 is a side view of the tracked vehicle, Fig. 2 is a front view thereof, Figs. 3 and 4 are sectional views of the guide roller portion, and Fig. 5
6 and 6 are schematic diagrams showing the equipment state of the apparatus of the present invention, and FIGS. 7 and 8 are schematic front views illustrating the measured value display means, respectively. 1... Track vehicle, 2, 2... Endless track crawler, 5° 5... Guide roller, 9...
Ground pressure measuring means, 10... Measured value display means.

Claims (1)

[Claims] 1. In a crawler bundle equipped with left and right endless track crawlers formed by connecting a large number of veneers, a constituent unit of the endless track belt is attached to a plurality of arbitrary guide roller portions located at required intervals in the longitudinal direction of each of the left and right endless track crawlers. A measurement system that is equipped with a ground pressure measuring means that measures the ground pressure through a board, and that also electrically extracts the measured values from each measuring means and simultaneously displays each measured value in a distribution situation that corresponds to each measurement location. A track bundle safety confirmation device 32 characterized by being equipped with a display means.
3. The crawler bundle stability confirmation device according to claim 2, wherein the measured value display means is of an analog type.