JPH0211487Y2 - - Google Patents

Description

[Detailed description of the invention] This invention consists of a pair of upper and lower slide frames arranged along the left-right direction of the vehicle body, and a slide bracket to which a shovel arm is attached can be slid left and right on the pair of upper and lower slide frames. At the same time, a large number of hoses for the hydraulic actuator of the shovel arm are arranged across the slide frame-side connector attached to the slide frame and the slide bracket-side connector attached to the slide bracket, and A hydraulic hose mounting structure for a backhoe work vehicle in which a hose is arranged between the pair of upper and lower slide frames with the intermediate portion bent and both ends connected to the respective connectors from the direction along the moving direction of the slide bracket. .

Conventionally, in the above-mentioned backhoe work vehicle, the fourth
As shown in the figure, a connector 15 on the slide frame 11 side and a connector 14 on the slide bracket 12 side
A large number of hydraulic hoses 13 were arranged bent in the same direction, but the slide bracket 1
When the hoses 2 are slid from side to side, the groups of hoses 13 come into contact with each other, resulting in a disadvantage that the hoses 13 are easily worn out.

In view of the above-mentioned circumstances, an object of the present invention is to effectively suppress hose wear and tear through simple improvements to the hydraulic hose mounting structure.

The characteristic configuration of the hydraulic hose mounting structure of the present invention is that, in the above-mentioned backhoe work vehicle, the large number of hydraulic hoses are divided into two groups, and the first group and the second group are bent in the bending direction with respect to each other. are arranged so that the left and right directions are opposite, and the slide bracket side connector is connected to the first group of hydraulic hoses, and the slide bracket side connector is connected to the second group of hydraulic hoses, The slide frame-side connectors are arranged vertically in such a way that the directions of their connection ports are opposite to each other in the moving direction of the slide bracket, and are connected to the hydraulic hoses of the first group; The slide frame-side connectors connected to the second group of hydraulic hoses are arranged so that the directions of their connection ports are left and right opposite to each other in the moving direction of the slide bracket, and the pair of upper and lower slides The reason is that they are installed separately on each frame, and their functions and effects are as follows.

In other words, as shown in FIG. 2, by dividing a large number of hydraulic hoses 13a and 13b into two groups and arranging them so that they are bent in opposite left and right directions, there is an opportunity for the hoses 13a and 13b to come into contact with each other. has been halved. In addition, the connectors 14 on the slide bracket 12 side are divided into two groups 14a and 14b and arranged vertically so that the connection ports are oriented in opposite directions, and the slide frame 11
The side connector 15 also has two groups 15a, 15
The upper frame 11a and the bracket 12 are divided into upper and lower frames 11a and 11b and arranged so that the left and right connection ports are in opposite directions.
Across the lower respective connectors 15a, 14a,
In addition, by constructing the hydraulic hoses 13a, 13b divided into groups over the lower frame 11b and the respective connectors 15b, 14b on the upper part of the bracket 12, bending of the hydraulic hoses 13a, 13b in any group can be avoided. can be made loose, and at the bent portions of the hydraulic hoses 13a and 13b,
Strong sliding contact between the hoses 13a and 13b and fatigue of the hoses 13a and 13b can be suppressed, and as a whole,
We have succeeded in providing a hydraulic hose mounting structure that sufficiently suppresses wear and tear on the hose and is excellent in terms of durability.

Furthermore, in detail, a large number of hydraulic hoses 13
a, 13b are arranged in two groups, for example, the slide bracket 12 side connector 1
4a and 14b are installed side by side in the width direction of the vehicle, as shown in Figure 3 A, or the slide frame 1.
The first side connectors 15a and 15b are attached to the frame 11a or 11b on only one of the upper and lower sides.
A configuration such as the type shown in Figure B is conceivable, but in the former case, the drawback is that the left and right sliding width of the slide bracket 12 is limited by the vehicle body width dimension of one slide bracket 12 side connector 14a or 14b. Yes, in the latter case, one slide frame 1
There is a drawback that the vertical width for bending the hoses 13a, 13b is limited by the vertical dimension of the first side connector 15a or 15b, and the hydraulic hoses 13a, 13b tend to bend sharply. However, in the present invention, by arranging the slide bracket 12 side connectors 14a, 14b vertically, the left and right sliding width of the slide bracket 12 can be maximized, and furthermore, the slide frame 11 side connectors 15a, 15b By distributing and arranging the hydraulic hoses 13a and 13b between the upper and lower frames 11a and 11b, the spacing between the upper and lower frames 11a and 11b can be utilized to the maximum, the bending of the hydraulic hoses 13a and 13b can be made looser, and the left and right sliding width of the shovel arm can be narrowed. The durability of the hoses 13a and 13b can be sufficiently improved without having to do so.

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

As shown in FIG. 1, a pair of left and right driving front wheels 1
a front vehicle body 2 equipped with a
The rear vehicle body 4 is connected to the rear vehicle body 4 so as to be able to swing relative to each other around the vertical axis _P1 , and a hydraulic cylinder 5 installed across both vehicle bodies 2 and 4 adjusts the amount of movement of the steering wheel 6 according to the amount of operation of the steering handle 6. Only both car bodies 2 and 4
The front vehicle body 2 is equipped with a front shovel device 7 that can be freely raised and lowered, and the rear vehicle body 4
The vehicle is equipped with a boarding and driving section 8, a driving section 9, and a backhoe device 10, thereby forming a working vehicle for carrying out earth and sand transportation work and excavation work.

The configuration of the backhoe device 10 will be explained in detail below.

A slide bracket 12, which can be slid left and right and can be fixed, is attached to a slide frame 11 that is detachably attached to the rear end of the rear vehicle body 4 by locking members 12a, 12.
They are hugged and connected by b. A swing bracket 19 is pivotally connected to the slide bracket 12 so as to be able to swing left and right about the vertical axis P ₂ by operating a drive motor 18 . The shovel arm 20 is in a state where it can swing freely in the direction.
are pivotally connected. Also, shovel arm 20
The operating tools 22 of each hydraulic actuator 21 are mounted together above the slide frame 11.

To explain the slide frame 11 in more detail with reference to FIG. 2, a pair of upper and lower left and right horizontal frames 11a and 11b are arranged in parallel over substantially the entire width of the machine body, and support the machine body on the ground during excavation work. A pair of left and right outrigger devices 16 are connected and fixed across the left and right lateral ends of the upper and lower frames 11a and 11b, and the slide bracket 1
The limit position of lateral sliding of No. 2 is regulated by an outrigger device 16.

Eight hydraulic hoses 13a, 13b for each of the bucket, boom, arm, and swing actuators 21 of the shovel arm 20.
The hoses 13 of these groups are divided into a first group 13a and a second group 13b of four hoses each.
a and 13b are arranged so that their bending directions are left and right opposite to each other. Eight slide bracket side connectors 14 attached to the slide bracket 12
a, 14b are divided into two groups connected to the first group and the second group of hydraulic hoses 13a, 13b, and in each group, the slide bracket side connectors 14a, 14b are arranged in two rows and two stages, and the first group The slide bracket side connector 14a connected to the hydraulic hose 13a of the first group is arranged so that the connection port is located below the slide bracket side connector 14b connected to the second group of hydraulic hoses 13b so that the left and right connection ports are opposite to each other. Moreover, the eight slide frame side connectors 15a, 15b attached to the slide frame 11 side are also divided into two groups connected to the first group and the second group of hydraulic hoses 13a, 13b, and in each group, the slide frame The side connectors 15a and 15b are arranged in four rows and one row, and the slide frame side connector 15a connected to the first group of hoses 13a is connected to the lower side of the upper frame 11a, and the slide frame side connection is connected to the second group of hoses 13b. Ingredients 15
b on the upper side of the lower frame 11b, respectively, and the mounting plate 1
Install with 7, slide bracket side connection tool 1
4a and the slide frame side connector 15a are arranged so that their connection ports both face leftward,
On the other hand, the slide bracket side connector 14b and the slide frame side connector 15a are arranged so that their connection ports both face rightward.

Next, another example will be described.

The present invention can be applied to various types of backhoe work vehicles other than the foldable type, and the number of hydraulic hoses 13a and 13b is not limited.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of the hydraulic hose mounting structure for a backhoe work vehicle according to the present invention.
The figure is an overall side view of the backhoe work vehicle, and Figure 2 is a sectional view of the main parts. FIGS. 3A and 3B are schematic diagrams showing comparative examples. FIG. 4 is a perspective view of essential parts of a conventional example. 11a, 11b...Slide frame, 12...
...Slide bracket, 13a, 13b...Hydraulic hose, 14a, 14b...Slide bracket side connection tool, 15a, 15b...Slide frame side connection tool, 20...Shovel arm, 21...Hydraulic actuator.

Claims (1)

[Scope of utility model registration request] A slide bracket 1 has a pair of upper and lower slide frames 11a, 11b arranged along the left-right direction of a vehicle body, and a shovel arm 20 is attached to the pair of upper and lower slide frames 11a, 11b.
A large number of hoses 13 for the hydraulic actuator 21 of the shovel arm 20 are installed on the slide frame 1 so as to be slidable left and right.
1a, 11b and the slide bracket side connector 14 attached to the slide bracket 12, and the hose 13 is bent at the middle part and at both ends. The pair of upper and lower slide frames 1 are connected to the respective connectors 14 and 15 from the direction along the moving direction of the slide bracket 12.
In the backhoe work vehicle disposed between 1a and 11b, the large number of hydraulic hoses 13 are divided into two groups, and the first group 1
3a and the second group 13b are arranged so that their bending directions are left and right opposite to each other, and the slide bracket side connector 14a connected to the hydraulic hose 13a of the first group and the hydraulic hose of the second group The slide bracket-side connectors 14b connected to the hose 13b are arranged vertically in such a way that the directions of their connection ports are opposite to each other in the moving direction of the slide bracket 12, and the first The slide frame side connector 15a connected to the hydraulic hose 13a of the group and the slide frame side connector 15b connected to the second group hydraulic hose 13b are connected so that their connection ports are oriented in the slide bracket. 1. A hydraulic hose mounting structure for a backhoe work vehicle, characterized in that the hydraulic hoses are arranged so as to be left and right opposite to each other in the moving direction of the hydraulic hoses 12, and are mounted separately to each of the pair of upper and lower slide frames 11a and 11b.