JPH07207705A - Steering tower structure of work machine - Google Patents

Abstract

PURPOSE:To reduce the number of parts, reduce cost, do not hinder parts replacement maintenance of instruments, switches, etc., and improve outward appearance by constituting a steering tower cover by means of two parts joining mutually on lateral line and using an upper face of the cover as an operation panel face. CONSTITUTION:A steering column 14 is set upright on a floor 10 of a driving portion and the column 14 is then covered with a steering tower cover 17 of halved structure, resulting from front/rear joining of a front cover 15 and a rear cover 16. The front cover 15 and the rear cover 16 are so formed, respectively, that an upper face of the steering tower cover 17 can be formed as an operation panel face for attaching instruments etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control tower structure for a work machine such as a wheel loader, a carrier, a front mount type lawnmower or the like.

[0002]

2. Description of the Related Art Conventionally, like the one disclosed in Japanese Utility Model Laid-Open No. 1-174449, a control tower having an upper wall formed on the operation panel surface is erected from the floor and is oblique from the rear surface of the control tower. Generally, a structure in which a steering column is provided so as to protrude rearward and upward is provided.

[0003]

In the above structure, the base portions of the forward / reverse travel switching lever, winker lever, etc. attached to the steering column are in a bare state, which is inferior in appearance, and is also deteriorated by injection cleaning or the like. There was also room for improvement because there was a tendency for water to invade and the lever switch contact failure to occur. An object of the present invention is to reasonably configure a control tower cover for improving appearance and contributing to elimination of malfunction of an electric system.

[0004]

In order to achieve the above object, the present invention provides a steering column standing on the floor of a driving section, and the steering column is provided with a first cover member and a second cover member.
The cover member is covered with a control tower cover having a two-divided structure that is laterally aligned, and the upper surface of the control tower cover is formed on the operation panel surface on which the instruments are equipped. The shape of each of the two cover members is set.

[0005]

[Operation] Since the steering column cover is covered by the steering tower cover, it is possible to hide the poorly designed parts such as the electric switch and the pivotal support mechanism of the lever, and it becomes difficult for water to invade so that the switch contact failure or the like occurs. It will be improved. The upper surface of the control tower cover is an operation panel surface on which instruments such as a traveling speedometer and a monitor lamp are arranged. For example, as in the control tower of a mowing machine disclosed in JP-A-5-68409, the operation panel surface is provided. This is advantageous in that the number of parts can be reduced as compared with the structure in which is independently provided.

Further, since the control tower cover is constructed by a two-part structure in which the first cover member and the second cover member are joined in the front-back or left-right lateral direction, for example, if the second cover member is removed, the cover is formed. The mating surface is opened so that the instruments attached to the upper surface of the first cover member can be inspected and maintained, and the instruments attached to the upper surface of the removed second cover can be inspected and maintained. In other words, the inspection and maintenance of the interior parts can be performed by removing the cover member on one side.

[0007]

Therefore, by constructing the control tower cover with two parts by lateral alignment, the upper surface of the cover can be used also as the operation panel surface to reduce the parts and cost, and
We were able to obtain a rational control tower cover structure that improves the appearance while allowing parts and switches to be replaced and maintained without any problems.

[0008]

Embodiments of the present invention will be described below with reference to the drawings when applied to a wheel loader which is an example of a working machine. A wheel loader is shown in FIG. 4, 1 is a front vehicle body having driving front wheels 8, 2 is a rear vehicle body having driving rear wheels 9, 3 is a loader device, 4 is a cabin, 5 is an engine, and 6 is a driving section. , 7 are hydraulic oil tanks.

As shown in FIGS. 1 and 2, a control tower 12 having a steering handle 11 on the floor 10 of a driving section 6 is provided.
Is erected. The control tower 12 is a steering column 1 that rotatably supports a steering handle 11 with respect to a support frame 13 made of an iron plate that is raised from the floor 10.
4 is fixed, and a resin front cover (corresponding to the first cover member) 15 and a rear cover (corresponding to the second cover member)
It is configured by providing a control tower cover 17 having a two-part structure by front and rear alignment with 16. Assembling order is as follows. First, the rear cover 16 is bolted to the support frame 13, and then the front cover 15 is attached to the rear cover 16 and the support frame 13.
It is bolted to.

Upper surfaces 15a and 16a are formed on the front cover 15 and the rear cover 16, respectively, so that the upper surface of the control tower cover 17 becomes an operation panel surface equipped with various instruments. By the way, on the upper surface of the control tower cover 17, the fuel gauge 1
8, odometer 19, water temperature gauge 20, various monitor lamps 21 (equipped on the front cover 15), lock knob 22 of the forward / reverse switching lever 27, headlight switch 23, hazard switch 24, parking switch 25, low speed hold A switch 26 (equipped with the rear cover 16) is attached. Further, a forward / reverse switching lever 27 is provided on the left side of the split surface portions of the front and rear covers 15 and 16, a winker lever 28 is provided on the right side thereof, and a main switch 29 is disposed on the right side surface of the front cover 15. There is.

Brake pedals 30, 30 are provided on the left and right sides of the support frame 13, and an accelerator pedal 31 is provided on the right side. It should be noted that the cabin 4 and the control tower 12 are connected to each other without a gap, and the control tower 12 is located from below the floor 10.
Even if cold air flows inward, it does not reach the inside of the cabin 4.

A rear cover 3 having an engine hood 32 and a tail lamp 33 mounted on the rear portion of the rear body 2
4, a weight 35 and the like are provided, and as shown in FIG. 3A, the rear cover 34 is attached by two butterfly bolts 38 to the stay 37 of the rear frame 36. As shown in FIG. 3B, if the engine bonnet 32 is closed, the operation of the butterfly bolt 38 is impeded.

Further, as shown in FIG. 3, the rear cover 34
Vertical plate-shaped reinforcing plates 34a, 34a are fixed to the inner side of the rear side of the rear cover 34.
An air guide passage is formed to discharge the air from the above.

As shown in FIG. 5, a tapered fitting portion 34c is formed.
The rear cover 34 may be formed of a resin material integrally formed with a pair, and the cushion rubber portion 37a with the insertion hole may be attached to the stay 37 of the rear frame 36. That is,
The rear cover 34 is attached by fitting, and if the engine hood 32 is closed, the rear cover 34 will not come off naturally.

As shown in FIG. 4, the hydraulic oil tank 7 is provided with an oil level gauge 40 and a pressure switch 41. The pressure switch 41 is for detecting the tank internal pressure after refueling. For example, the pressure switch 41 is configured so that a warning lamp is turned on when the pressure exceeds a predetermined value, so that the oil level gauge 40 is damaged or the tank is deformed due to too much oil. Can be prevented in advance.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Side view of the control tower

FIG. 2 is a perspective view showing the arrangement of instruments in a control tower.

FIG. 3 is a perspective view showing a mounting structure of a rear cover.

FIG. 4 is a side view of the wheel loader.

FIG. 5 is a perspective view showing another structure for attaching the rear cover.

[Explanation of symbols]

 10 Floor 14 Steering Column 15 First Cover Member 16 Second Cover Member 17 Control Tower Cover

Claims (1)

[Claims] 1. A steering column (14) is erected on a floor (10) of a driving section, and the steering column (1) is provided.
4) to the first cover member (15) and the second cover member (1
6) is covered with a control tower cover (17) having a two-divided structure, which is formed by laterally aligning 6) and 6), and the upper surface of the control tower cover (17) is formed on the operation panel surface equipped with the instruments. , The first and second cover members (15),
(16) A control tower structure of a working machine in which each shape is set.