JPH10280480A - Hydraulic shovel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent infiltration of rain and mud so as to improve durability of electrical equipment by disposing electrical equipment bracket for integrating electrical equipment therein, in space below console boxes and on the lateral outside of a seat frame. SOLUTION: Space on the outside of a left side plate part of a seat frame and below a left side console box 9 is made disposition space A for strong current electrical equipment, and a strong current bracket 15 is fitted therein. Space on the outside of a right side plate part and below a right side console box 9 is made disposition space B for weak current electrical equipment, and a weak current bracket 22 is fitted therein. The strong current electrical equipment and weak current electrical equipment are integrated into the exclusive brackets 15, 22, and the respective brackets 15, 22 are separately disposed in space below the lateral console boxes 9. Mixed presence of the strong current electrical equipment and weak current electrical equipment can therefore be avoided so as to improve workability of terminal connection or the like. The upper part and side part of the disposition space of the brackets 15, 22 are covered with the console boxes 9 and the seat frame, so that infiltration of rain and mud can be prevented, and durability of the electrical equipment can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of hydraulic excavators used for civil engineering work, construction work and the like.

[0002]

2. Description of the Related Art Generally, a hydraulic excavator of this type is provided with various electric components such as a control timer and a breaker. And, in a large-sized hydraulic shovel, it is easy to secure a storage space exclusively for these electrical components, but in a small-sized hydraulic shovel, it is difficult to secure a storage space exclusively for the electrical components.
These electrical components were housed in the engine room.

[0003]

In recent years, attempts have been made to seal the engine room to prevent noise, etc., and the temperature of the engine room tends to increase. If the temperature of the engine room becomes high in this way, the above-mentioned electrical components housed in the engine room may be adversely affected. Therefore, it is necessary to secure a place for disposing the electrical components separately. However, there is a problem to be solved. In addition, some of the electrical components include those for high current, in which the battery voltage (for example, 12 volts) flows as it is, and those for low current, in which the reduced voltage flows. It is required to attach a cap, but if both high-voltage and low-voltage are mixed, there is a possibility that the need for a protective cap may be mistaken for the need for a protective cap. Was.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to provide a hydraulic excavator which can solve these problems in view of the above-mentioned circumstances, and is provided above an airframe. In a hydraulic shovel having a cockpit provided on a seat frame to be provided, and a console box provided at left and right sides of the cockpit,
An electrical component bracket into which electrical components are incorporated is disposed below the console box and in a space on the left and right outer sides of the seat frame. In other words, the electrical components that were conventionally housed in the engine room are now located in the space below the console box, so the ambient temperature of the electrical components can not be reduced and maintenance is improved. Can be done. The space is
It is generally protected entirely by canopies and cabs, and the upper and sides of the space are directly covered by the console box and seat frame to prevent rain and mud from entering and electrical components Can be improved in durability. Also, in the above, the electric component bracket is composed of two types, one for the high electric current and the other for the low electric current, and one of the brackets for the electric component is provided in the space below the left console box, and the other electric component is provided. Brackets are arranged in a space below the right console box. In other words, since it is possible to avoid the mixture of the electrical component for strong electric power and the electrical component for weak electric power, there is no inconvenience of confusing the necessity or necessity of the protective cap, and as a result, the workability such as terminal connection can be improved.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a hydraulic excavator. The hydraulic excavator 1 includes a lower traveling body 2 of a crawler type, an upper revolving body 3 rotatably supported by the lower traveling body 2, and a front part of the revolving body 3. A work unit 4 and the like to be attached are provided, and a cockpit 6 on which an operator sits, a canopy 7 covering the cockpit 6, and a canopy 7 above the body frame 5 constituting the upper swing body 3 are not shown. An engine room 8 and the like for accommodating an engine and a hydraulic pump are provided, and all of these basic configurations are conventional.

Reference numeral 9 denotes a pair of console boxes (control levers 10) arranged on both left and right sides of the cockpit 6.
The pair of console boxes 9 are vertically swingable via pins 12 at the left and right ends of a console bracket 11 to which the cockpit 6 is integrally attached. Are linked.
In other words, the console box 9 is locked in a horizontal position during work, but the boarding / unloading passage can be as wide as possible by flipping the console box 9 upward and rearward when getting on and off.

A seat frame 13 is provided above the body frame 5 to support the cockpit 6 and the console box 9. The seat frame 13 includes left and right side plates 13a and 13b and side plates 13a. , 13b are formed in a substantially zigzag shape in a front view by an upper plate portion 13c integrally connecting the upper ends of the two members. And the upper plate 13
The integrated cockpit 6 and console box 9 are assembled on the upper surface of the seat frame c via a slide rail 14 so that the front and rear positions can be adjusted freely. 13a, 13
It is designed to be mounted so as to protrude left and right outward from b. Incidentally, the internal space of the seat frame 13 is secured as a space for disposing an air conditioner such as a heater in a cab specification, for example.

[0008] Of the left and right side plate portions 13a and 13b of the seat frame 13, outside the left side plate portion 13a,
In addition, the space below the left console box 9 is secured as a space A for disposing the electric components for strong electric power, while the right plate 1 is secured.
The space outside of 3b and below the right console box 9 is secured as a space B for disposing electrical components for weak electricity. Hereinafter, the arrangement structure of electrical components for strong electricity and weak electrical components will be specifically described. explain.

Reference numeral 15 denotes a high-current bracket to which electric components for high-current are assembled. The high-current bracket 15 includes a base plate 15a fixed to the left side plate portion 13a of the seat frame 13 through bolts 16, and a base plate 15a. A first mounting plate 15b that partitions the base plate 15a back and forth and covers above the front partition space; a rear partition space partitioned by the first mounting plate 15b is vertically partitioned; and the rear of the lower partition space is A second mounting plate 15c to be covered, and a third mounting plate 15 partitioning the lower partition space partitioned by the second mounting plate 15c left and right.
d. And, the first mounting plate 15
b, fuse box 17 on the front and breaker 1 on the rear.
8, a safety relay 19 is mounted on the right inner side of the third mounting plate 15d, and a power relay 20 is mounted on the left outer side of the third mounting plate 15d to form a high-voltage electrical component assembly. Since each of them is for high-power use, a protective cap 21 is attached to the terminal connection between each electrical component and the wiring.

On the other hand, reference numeral 22 denotes a low-current bracket on which the low-current electrical components are mounted.
Are a pair of case members 2 which are fitted together to form a box.
2a and 22b, and one of the case members 22a
To the L-shaped plate 2 on the right side plate portion 13b of the seat frame 13.
3 and bolts 24, and the other case member 22b is detachably fitted to the fixed case member 22a. Then, the case member 22
The glow timer 25, the control timer 26, the glow relay 27, and the relays 28 and 29, which are the light electrical components, are assembled on the inner surfaces of the components a and 22b to form a light electrical component assembly. , Are drawn into the case from openings formed in the lower surfaces of the case members 22a and 22b.

Further, reference numeral 30 denotes a front cover for closing the front surface of the seat frame 13.
Is formed in a substantially zigzag shape in plan view, and its left side plate portion 30
a covers the left outer side surface (opening) of the high-current bracket 15, but the left end of the front plate 30 b of the front cover 30 has an opening 30 c facing the fuse box 17.
Is formed, and the opening / closing plate 31 for opening and closing the opening 30c is provided, so that the fuse can be easily replaced by opening the opening / closing plate 31.

In the structure constructed as described above, a space is provided below the console box 9 disposed on the left and right sides of the cockpit 6 and on the left and right sides of the seat frame 13.
The arrangement of the brackets 15 and 22 for the electrical components into which the electrical components are incorporated makes it possible to lower the ambient temperature of the electrical components compared to the conventional case where the electrical components are housed in the engine room 8. The space below the box 9 can be used effectively, and the arrangement space is near the cockpit 6, so that the maintainability can be improved.

The space in which the brackets 15 and 22 are arranged is not allowed to be entirely covered with the canopy 7 (or cab).
Since it is directly covered with the seat and the seat frame 13, it is possible to prevent rain and mud from entering and to improve the durability of the electrical components.

Further, the electric component for strong electric power and the electric component for weak electric power are assembled into dedicated brackets 15 and 22, respectively, and the brackets 15 and 22 are connected to the left and right console boxes 9 respectively.
Are arranged in a distributed manner in the lower space of the terminal, it is possible to avoid the mixture of the electric component for strong electric power and the electric component for weak electric power. Workability can be improved.

In this embodiment, the console box 9 can be adjusted forward and backward integrally with the cockpit 6 and can be flipped upward and rearward with the rear end as a fulcrum. By flipping up the console box 9, the space below the console box 9 can be opened widely, and as a result, the maintainability of electrical components disposed in the space below the console box 9 can be further improved.

Further, in the present embodiment, the front of the high-current bracket 15 and the low-current bracket 22 is covered with the front cover 30 to prevent the wiring from being exposed, but the opening 30 c is provided at a position facing the fuse box 17. Since it is formed and the opening / closing plate 31 which can be opened / closed is provided in the opening 30c, when replacing the fuse which is frequently performed,
Work can be easily performed without removing the front cover 30 each time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a hydraulic shovel.

FIG. 2 is a front view of a control unit.

FIG. 3 is a side view of the same.

FIG. 4 is an exploded perspective view of the same.

FIG. 5 is a front view of the essential parts of the same.

FIG. 6 is a plan view of a main part of the same.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is a sectional view taken along line BB of FIG. 6;

FIG. 9 is a perspective view of a bracket for strong current.

FIG. 10 is a perspective view of a bracket for weak electricity.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 3 Upper revolving superstructure 5 Body frame 6 Pilot seat 9 Console box 13 Seat frame 15 Bracket for heavy electric power 17 Fuse box 18 Breaker 19 Safety relay 20 Power relay 21 Protective cap 22 Bracket for light electric power 25 Glow timer 26 Control timer 27 Glow relay 28 Relay 29 Relay 30 Front cover

Claims (2)

[Claims] 1. A hydraulic shovel having a cockpit provided on a seat frame provided above a body frame and console boxes disposed on left and right sides of the cockpit, wherein the console box is provided below the console box. A hydraulic excavator in which electrical component brackets into which electrical components are incorporated are arranged in spaces on the left and right sides of the seat frame. 2. The electrical component bracket according to claim 1, wherein the electrical component bracket is composed of two types: a high-current component and a low-current component, and one of the electrical component brackets is provided in a space below the left console box and the other is provided. Hydraulic excavator in which the brackets for electrical components are arranged in the space below the right console box.