JPS5912291Y2 - Swivel base structure of full swing work vehicle - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a swivel platform structure for a fully swivel work vehicle.

In general, a swivel table is a device that mounts a heavy object such as a working arm and pivots as a whole, so the swivel table is constructed as a single piece.

With this structure, there are fewer weak points in terms of strength because the whole is a single piece, and it is advantageous in terms of strength, but
In terms of processing and assembly, it is difficult to handle due to its large size, and has the disadvantage of requiring extremely difficult work.

In other words, the swivel table itself is originally designed with a large number of precision-machined parts located throughout the swivel table. This process involves surface machining work that requires
In addition, similar surface machining is required for the bracket attachment part on the surface (upper side) for attaching the work arm so that it can swing left and right, and the rotary joint, so the entire swivel base is assembled into a large size. To process the parts,
There are two disadvantages: the processing equipment itself must be enlarged, and the large components must be accurately installed in the correct position and posture relative to the processing equipment, which is not easy to handle and requires a lot of effort. there were.

In view of the above points, it is an object of the present invention to facilitate the installation and processing of a swivel base.

Features of the swivel platform structure of the fully swivel work vehicle according to the present invention,
The swivel base is composed of a main part formed by integrally assembling each of a swivel race, a bracket mounting part, and a rotary joint mounting part, and a driving part mounting part, and the main part includes: The main frame of the main body part and the protruding frame on which the driving part mounting part can be mounted are connected in series, and the effects are as follows.

In other words, by dividing the swivel table into the main body part and the driving part mounting part, each part is made smaller and easier to handle. Because they are assembled in one piece, it is possible to achieve high finishing accuracy in terms of relative dimensions and surface finishing.

Furthermore, since the frame is constructed in a continuous manner from the main body to the mounting location of the prime mover section, extremely high connection strength can be obtained.

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

A backhoe device 3 is installed on one side of a swivel base 2 equipped with a crawler-type traveling device 1, and an engine 4 is installed on the other side.
A driving unit 5 consisting of the backhoe device 3 and its attached equipment is mounted on the tower, and a pilot seat 6 is disposed between the backhoe device 3 and the drive unit 5, and the traveling device 1 and the backhoe device 3 are mounted in front of it.
The operating equipment 7 such as
A blade 9 is provided, thereby constructing a working vehicle for carrying out excavation work using the backhoe device 3 and soil removal work using the blade 9.

A swivel base 2 is arranged on the traveling machine base 8 so as to be able to fully rotate around the vertical axis p1, and a backhoe device 3 is attached to the swivel base 2.
The structure is such that it can be driven and oscillated over a certain range around the vertical axis p2 via the bracket I-10, and the swivel base 2
The working vehicle is of a fully rotating type that can dig ditches by turning the backhoe device 3 and swinging the backhoe device 3 left and right.

As shown in FIG.
5 is connected and fixed to the inner race 16 on the traveling machine base 8 side, and a pinion gear 17 is provided on the swivel base 2 so as to be rotatable around the vertical axis p3.
The swivel base 2 is driven to rotate around the vertical axis p1 by the driving rotation of the pinion gear 17. I have made every effort to do so.

The upper half 18a of the rotary joint 18 is fixed to the swivel base 2 side, and the lower half 18b is fixed to the traveling machine base 8. Pressure fluid can be supplied to the traveling machine stand 8 side.

The swivel base 2 is divided into a main body portion 19 and a driving unit mounting portion 20, and a mounting portion 1 is provided for mounting the bracket 10 on the main body portion 19 so as to be swingable about the vertical axis p2.
9a, a rotary joint mounting portion 19b for mounting the upper half 18a of the rotary joint 18, and a mounting base 19C for mounting a safety frame surrounding the pilot seat;
Additionally, a mounting mounting portion 19d for the battery 22 and a mounting portion 19e for mounting the pilot seat support 21 are formed.

On the other hand, the driving unit mounting portion 20 includes an engine mounting portion 20a to which the engine 4 is attached, and an engine cooling radiator 2.
A radiator mounting part 20b for mounting the radiator 4 and a mounting part 20C for mounting the bonnet 25 covering these various members are provided.

The main body portion 19 is provided with a pair of left and right main frames 26A, and a pair of left and right protruding frames 26B extending rearward of the main body portion 19, and the main frame 26A
and the protruding frame 26B are integrated into a frame 26 with a series of square hype bars, and the protruding frame has a connecting part 27 for placing the driving part mounting part 20 and connecting it with bolts.
It is shaped like...

According to this structure, the upper half 18a of the rotary joint 18, the left-right swing bracket 10 of the excavation device, the pilot seat support 21, the battery 22, etc. are carried out on the first assembly line, and The engine 4, radiator 24, bonnet 25, etc. are assembled on the second assembly line in parallel with the first assembly line, thereby reducing the overall assembly time.

Note that the means for mounting and fixing the driving unit mounting portion 20 on the main body portion 19 can be modified in various designs.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the swivel base for a full-swing working vehicle according to the present invention, with FIG. 1 being a side view of the entire working vehicle, FIG. 2 being a cross-sectional view at the attachment part of the rotary joint, and FIG. It is a partially exploded perspective view. 2...Turning table, 15...Turning race,
19... Main body part, 19 a... Bracket mounting part, 19 b... Rotary joint mounting part, 20... Drive unit mounting part, 26...
...Frame, 26A ...Main frame, 2
6B...Protruding frame.

Claims (1)

[Scope of utility model registration request] The swivel base 2, the swivel race 15, and the bracket mounting part 19a
, and the rotary joint mounting portion 19b are integrally assembled, and a driving portion mounting portion 20, and the main portion 19 includes the main portion 1
Frame 26. Fully rotating work vehicle and swivel platform structure with 26 connected in series.