JPH07304404A - Hydraulic driven construction machinery - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a construction machine with the advantage that it is safe and that repair work of hydraulic piping and electric cables can be easily performed. [Structure] The engine 13 is placed in front of the vehicle body with the driver's seat 15 in between.
In a compacting machine in which a hydraulic pump 14 driven by the engine is mounted and a hydraulic motor 17 for driving rear wheels is mounted in a rear portion of a vehicle body, a hydraulic pipe 6 is passed to one side of a lower portion of the driver's seat. A channel is formed,
A channel for passing an electric cable is formed on the other side of the lower part of the driver's seat, and an intake passage to a radiator 19 of an engine mounted in the front of the driver's seat passes through the electric cable channel to the radiator. Is configured to arrive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulically driven construction machine (hereinafter, simply referred to as construction machine). For more details,
The present invention relates to a construction machine such as a compaction machine in which a hydraulic pipe and an electric cable are separately installed and extended in the chassis without coming close to each other.

[0002]

2. Description of the Related Art Recently, in a low-speed construction machine such as a compaction machine, a high reduction ratio is realized, an acceleration / deceleration operation is facilitated, and a layout degree of a transmission mechanism is improved. For this reason, the number of hydraulic drive type is increasing.

In this type, a hydraulic pump is driven by the internal combustion engine, a hydraulic motor is rotated by the hydraulic pump to drive the drive wheels by the hydraulic motor, and the front wheels are also driven for steering. In such a hydraulic drive type construction machine, a large number of hydraulic pipes are arranged in the chassis, and electric cables for controlling lighting, signals, hydraulic circuits and the like are laid out vertically and horizontally.

[0004] However, conventionally, a piping and wiring method has been adopted in which a passage for hydraulic piping which requires a relatively large space is determined, and then a thin electric cable is passed together with an empty portion in the space. Therefore,
If pinholes or cracks occur in the hydraulic piping, an unfavorable situation may occur in which the sprayed hydraulic oil fills the area around the electric cable. At least, wiring and piping are complicated and unsightly,
The repair work is difficult and requires great care, and there is the inconvenience that the electrical system and the hydraulic piping system cannot be assembled or repaired at the same time.

The present invention has been made to solve the above problems, and is advantageous in that the hydraulic pipe and the electric cable are separately arranged, so that it is safe and that repair work can be easily performed. The purpose is to provide a construction machine equipped with.

[0006]

A construction machine of the present invention is a hydraulically driven construction machine in which a hydraulic pipe and an electric cable are arranged in front of and behind a vehicle body, and a hydraulic pipe is provided in a chassis of the construction machine. It is characterized in that it extends through one side of the driver's seat to the front and rear of the vehicle body, and an electric cable extends through the other side of the driver's seat to the front and rear of the vehicle body.

The construction machine is a compaction machine in which an engine and a hydraulic pump driven by the engine are mounted on a front portion of a vehicle body across a driver's seat, and a rear wheel driving hydraulic motor is mounted on a rear portion of the vehicle body. From the viewpoint of safety and easiness of repair, it is preferable to form a channel through which the hydraulic pipe is passed on one side of the driver's seat and a channel through which the electric cable is passed on the other side of the driver's seat. Is preferable.

In the compaction machine, the driver's seat is arranged to be displaced to one side from the longitudinal center axis of the vehicle body, the electric cable channel is extended to the lateral side of the driver's seat, and the hydraulic pipe channel is provided. In the case where it is extended to the other side of the driver's seat, if the intake passage to the radiator of the engine mounted in front of the driver's seat is configured to reach the radiator through the electric cable channel It is more preferable from the viewpoints of preventing stains on the radiator and the engine and ensuring safety.

[0009]

According to the construction machine of the present invention, since the hydraulic pipe and the electric cable are arranged at a large distance from each other, the hydraulic oil may leak from the hydraulic pipe or the electric cable may leak. Is also safe. Further, for example, the cable does not become a hindrance when repairing the hydraulic piping, which is safe. On the other hand, there are similar advantages when repairing cables. Furthermore, it is safe and easy to check either one during operation. There is also an advantage that the electric system and the hydraulic pipe can be installed at the same time when the vehicle is assembled.

In the case where the dedicated channel for the hydraulic pipe and the electric cable is provided, the repair becomes easier, and even if there is a leak of hydraulic oil, the leaked oil does not easily move and is safe. Is.

In the case where the intake passage to the radiator passes through the channel of the electric cable, even in the case of the above, leaked oil does not flow into the channel of the electric cable, so that it is safer and safer for the radiator and the engine. Prevents dirt.

[0012]

Embodiments of the construction machine of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a chassis of a construction machine according to an embodiment of the present invention, FIG. 2A is a plan view showing piping and wiring in the construction machine of FIG. 1, and FIG. It is a side view showing piping and wiring in the first construction machine.

In the chassis 1 shown in FIG. 1, an arrow A indicates the front. On the right side of the upper and lower center lines of the upper surface of the chassis 1 (hereinafter, right and left refer to right and left when facing forward), a recess 2 having a bottom inclined from the front to the rear is formed. An engine and a hydraulic pump are mounted in this recess 2. Reference numeral 3 is a side plate that separates the recess from the outside on the right side. An opening 4 for accommodating a fuel tank is formed on the left side of the recess 2. Recess 2 and opening 4
Openings 5a and 5b leading to a water storage tank housed thereunder are formed in the rear portions of and, respectively. Also,
A driver's seat is installed on the right side opening 5a. A groove between the openings 5a and 5b is a channel 7 in which the hydraulic pipe 6 is accommodated, and a passage on the right side (so to speak, outside) of the opening 5a on the right side is a channel 9 into which an electric cable 8 is inserted.

A convex portion 10 is formed at the rearmost portion of the chassis 1, and a hydraulic motor for driving the rear wheels and a valve mechanism 16 for switching the flow path of hydraulic oil are housed in the lower portion of the convex portion 10. To be done. The hydraulic pipe 6 connected to the valve mechanism 16 is
It is connected to a hydraulic pump (not shown) in the front part of the vehicle body through the opening 12 formed in the wall of the convex portion and the inside of the channel 7.

2 (a) and 2 (b) show an example of the layout of the hydraulic pipe 6 and the electric cable 8. As shown in FIG. The hydraulic pipe 6 extends from a hydraulic pump 14 connected to an engine 13 in the front part of the vehicle body to the valve mechanism 16 in the rear part of the vehicle body through the left side of the driver's seat 15 (substantially the center of the vehicle body). It extends to the hydraulic motor 17.

On the other hand, the electric cable 8 passes from a battery (not shown) at the front of the vehicle body through the right side of the driver's seat 15 (almost the side of the vehicle body) and the working lamp 1 at the rear of the vehicle body.
8 and so on.

The intake air to the radiator 19 is indicated by the arrow B.
As shown by (4), it is made from an intake hole 20 formed on the lower right side of the driver's seat 15 through an electric cable passage (channel 9 in FIG. 1) on the right side of the driver's seat 15. Therefore,
In the unlikely event that hydraulic oil leaks from the hydraulic pipe in the channel 7 at the center of the vehicle body, the channels 7 and 9 for the hydraulic pipe and the electric cable are separated as described above, and the driver's seat In the front part, intake air to the radiator prevents the atmosphere of the hydraulic piping part from flowing into the electric cable side.

[0019]

According to the present invention, since the hydraulic pipe and the electric cable are arranged at a large distance from each other, even if the hydraulic oil leaks from the hydraulic pipe, the oil of the radiator and the engine can be used. Contamination is prevented and is safe, and the cable does not become a hindrance when repairing hydraulic piping, for example, while there are similar advantages when repairing the cable. Moreover, the electric system and the hydraulic pipe can be installed at the same time when the vehicle is assembled. Furthermore, it is safe and easy to check either one during operation.

[Brief description of drawings]

FIG. 1 is a perspective view showing a chassis of a construction machine according to an embodiment of the present invention.

2 (a) is a plan view showing piping and wiring in the construction machine of FIG. 1, and FIG. 2 (b) is a side view showing piping and wiring in the construction machine of FIG.

[Explanation of symbols]

 1 ... Chassis 6 ... Hydraulic piping 7 ... Channel 8 ... Electric cable 9 ... Channel 14 ... Hydraulic pump 15 ... Driver's seat 17 ... Hydraulic motor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Hirayama 2680 Oka, Inami-cho, Kako-gun, Hyogo Prefecture Kawasaki Heavy Industries Ltd. in Banshu Plant (72) Hiroshi Nishikawa 2680 Oka, Inami-cho, Kako-gun, Hyogo Kawasaki Heavy Industries Banshu Factory Co., Ltd.

Claims (3)

[Claims] 1. A hydraulically driven construction machine in which hydraulic piping and electric cables are arranged in front of and behind the vehicle body, wherein the hydraulic piping passes through one side of a driver's seat in the chassis of the construction machine. A hydraulically driven construction machine, which is extended in the front-rear direction and an electric cable is extended in the front-rear direction of the vehicle body through the other side of the driver's seat. 2. The construction machine according to claim 1, wherein an engine and a hydraulic pump driven by the engine are mounted on a front portion of a vehicle body across a driver's seat, and a rear wheel drive hydraulic motor is mounted on a rear portion of the vehicle body. 2. A hydraulic machine according to claim 1, which is a compacting machine, wherein a channel for passing hydraulic piping is formed on one side of the driver's seat, and a channel for passing an electric cable is formed on another side of the driver's seat. Construction machinery. 3. A hydraulic piping channel, wherein the driver's seat is arranged offset from the center axis of the vehicle body in the front-rear direction by one side, and an electric cable channel is extended to the lateral side of the driver's seat. Is extended to the other side of the driver's seat, and an intake passage to the radiator of the engine mounted in front of the driver's seat is configured to reach the radiator through the electric cable channel. The hydraulically driven construction machine according to claim 2.