JPH0421878Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a working machine that can be used as a walking type or a riding type.

(b) Conventional technology Conventionally, walk-behind work machines equipped with excavators and earth removal devices have relatively high vehicle heights, resulting in poor visibility when performing excavation work, etc., and limitations on excavation depth. I was receiving it. Although the machine is self-propelled, the operator must perform various operations while walking, so the work machine itself must be made smaller and have a structure that allows for easy operation, which limits its use. There was a problem where the

In addition, riding-type work equipment allows the operator to perform various work operations while seated, so the work efficiency is significantly higher than that of walk-behind work machines, but this work cannot be performed without a walk-behind work machine. There was a problem that it could not be used for construction of mountain roads like this.

(c) Problems that the invention aims to solve Therefore, various considerations have been made as to whether it is possible to create a work machine that can be used as a walking type or a riding type depending on the working conditions, but it is difficult to distinguish between walking type and riding type. First, since the operating location of the operator is different, the position of the operating lever must be able to be changed as appropriate.Furthermore, visibility must be ensured even during walking operations, and work performance can be improved. No working machine has been devised that satisfies the conditions such as the requirement that

(d) Means for solving the problem In the present invention, a swivel table with an excavator attached to the center of the front end is mounted above the traveling section, a prime mover section is provided at the front right side of the swivel table, and a motor section is installed next to it. A control valve is provided on the front left side of the installation, and the valve is cased with a valve cover that is formed as low as possible than the above-mentioned prime mover section, and on the rear side of the cover,
A lever stand that supports various operating lever groups is erected so that it can be raised and rotated freely, and a seat is placed behind the stand so that its position can be adjusted up and down and can be folded and stored, so that it can be used for walking work or riding work as appropriate. It is an object of the present invention to provide a walking/riding type work machine configured to be able to perform the following tasks.

(E) Function When constructing waterways etc. in mountainous areas, the operator can move the machine as appropriate while walking and perform excavation work using the excavator. The seat is unnecessary and obtrusive, so if it is placed lower and stored in a folded state, the valve cover at the front is formed low, so the movement of the drilling equipment installed further forward is ensured. Moreover, by rotating the lever stand backwards, the various operating lever groups provided on the stand can be easily operated even from the rear position of the swivel table.

In addition, when performing riding work, the operator must position the seat at an appropriate height according to the body shape of the operator, sit in the same seat, and operate the various control levers via the lever stand in the upright position. In this case as well, since the valve cover is formed low and the operator's eyes are at a high position when seated, the operator can easily see up to the front end of the running section and dig. This can improve work efficiency.

(f) Effects According to the present invention, the excavation work range is expanded because the excavation work can be carried out on foot or riding as appropriate depending on the work conditions, and visibility is good regardless of the work conditions. This allows work to be carried out with peace of mind, and has the effect of significantly improving work efficiency. Furthermore, even if a long object is placed on the right side of the machine, it will not interfere with operation, so it is possible to transport long objects.

(G) Example The example of the present invention will be explained in detail based on the drawings.
A is a walking/riding type work machine;
, a swing base 2 is installed between the crawler-type left and right running parts 1, 1, a swing base 3 is mounted on the base 2 so as to be rotatable, and a control valve is installed on the front left side of the swing base 3. 23, the valve is cased by a valve cover 4, and a prime mover section 5 is provided on the right side of the front part, and behind the prime mover section 5, various working machines such as a winch can be appropriately equipped in an attachment type. A space S is provided, and an operating section 6 is provided behind the valve cover 4.

An excavation device 8 is attached to the center of the front end of the swivel table 3 via a pivot bracket 7 so as to be able to move up and down and turn left and right.
The main and sub-booms 9 and 10 and the bucket 11 are connected to the first
It is configured to be rotated by second and third hydraulic cylinders 9', 10', and 11', and the pivot bracket 7 is rotated from side to side by a swing cylinder 12.

In addition, an earth removal device 41 is attached to the swing base 2, and the device 41 is attached to a lower support bracket 14 with the base ends of the left and right arms 13, 13 protruding from the swing base 2.
The arm 1 is connected to the pivot 15 so as to be movable up and down.
An earth removal cylinder 18 is installed between the earth removal plate 16 that is installed between the tips of 3 and 13 and the upper support bracket 17 that projects from the rotating base 2.

The valve cover 4 of the driver part 6 is formed so as to be lower than the prime mover part 5 as much as possible to improve the forward visibility of the walking work machine.
A lever stand 19 is provided at the rear of the lever stand 19, a reservoir 20 is placed behind the lever stand 19, and a seat 21 is mounted on the reservoir 20.
The valve cover 4 is formed into a rectangular box shape and is fitted into the rear side of the valve cover 4 which has a U-shaped notch. An interlocking mechanism 25 and a link mechanism 26 connect the base end of a group of various operating levers 24 protruding from the stand 19 and the control valve 23, which are configured to be freely tiltable rearward about the pivot support 22. are interlocked and connected via.

Reference numeral 27 denotes a sliding body, which interlocks and connects the sliding rod 28 of the interlocking mechanism 25 and the link rod 29 of the link mechanism 26, and is slidably supported in the guide body 30. Alternatively, as shown in FIG. 4, it is slidably supported by a guide pin 32 via a guide groove 31 provided on the circumferential surface of the sliding body 27.

In addition, the seat 21 is configured to be vertically adjustable above the reservoir 20 via a support plate rod 33, and can be folded and stored. A seat part 21-1 is attached so as to be adjustable in position and is formed to face the upper surface shape of the reservoir 20 from the upper end of the support rod 33, and projects horizontally forward. -2 The base end is pivoted 35 so that it can be folded forward and raised freely, so that it can be used for riding work.
Alternatively, it is adjusted as appropriate depending on the time of walking work.

Moreover, the backrest portion 21-2 is designed for use during walking work.
The seat 21-1 is folded forward and stored, and the support rod 33 is lowered to move the seat 21-1 to the reservoir 2.
0, the height of the seat 21 becomes approximately the same height as the valve cover 4, so that the excavator 8 placed on the front left side of the machine is placed in contact with the seat 2.
Even from the rear, the operator can enter the operator's field of vision while operating the various lever groups 24 via the lever stand 19 which has been tilted and rotated backward, and can perform excavation work etc. safely and reliably.

Further, even when the user sits on the seat 21 and performs riding work, the front end position of the traveling section 1 can be visually recognized without difficulty, and visibility is improved.

FIG. 5 shows the proximal pivot portion 36 of the bucket 11, and the pivot portion 36 includes the bucket boss portion 11.
- Insert the pivot pin 37 between 1 and 1, and
The link side boss 39 is attached to the circumferential surface of the link via the bush 38.
An O-ring 40 having a diameter slightly larger than the wall thickness of the bush 38 is interposed between the inner side of both ends of the boss 39 and the circumferential surface of the pivot pin 37, and The gap t between the bucket boss portions 11-1, 1 is configured to be smaller than the diameter of the O-ring 40, thereby making it possible to prevent mud from entering from the bucket boss portions 11-1, 1.

FIG. 6 shows the fixed structure of the lower support part 14 protruding from the swing base 2, and the bracket 1
4, the lower end portion 14-1 is extended inward to the lower side so as to cover the joint between the horizontal frame 2-1 and the vertical frame 2-2 of the rotating base 2; It is constructed so as to fulfill the reinforcing functions of 2-1 and 2-2, thereby increasing the strength and reducing manufacturing costs.

Furthermore, if various work equipment such as a winch is installed in the space S provided on the right side of the seat 21, the various installed work equipment can be operated even when seated, which improves work ability and improves operability. can be ensured well, and work efficiency can be improved.

[Brief explanation of drawings]

Figure 1 is a side view of the working machine according to the present invention, Figure 2 is a side view of the working machine according to the present invention;
3 is an enlarged side sectional view of the same main part, FIG. 4 is a diagram showing another embodiment, and FIG. 5 is an enlarged sectional view of the same main part. Figure 6 is an enlarged side view of the main part. A...Walking/riding type working machine, 11...Traveling section, 2...Swivel base, 3...Swivel base, 4...Valve cover, 5...Motor unit, 6...Driving unit.

Claims (1)

[Scope of utility model registration request] A swivel base 3 with an excavation device 8 attached to the center of the front end is placed above the traveling section 1, a prime mover section 5 is provided on the front right side of the swivel base 3, and a control valve 23 is installed on the front left side adjacent to it. At the same time, the valve 23 is cased with a valve cover 4 formed as low as possible than the prime mover section 5, and
A lever stand 19 that supports a group of various operating levers 24 is installed on the rear side so as to be rotatable up and down, and a seat 21 is installed behind the stand 19 so that the position can be adjusted up and down and can be folded and stored. , walking work as appropriate;
Alternatively, a walking/riding type work machine configured to perform riding work.