JPH0451104Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to the cab structure of a construction machine that is operated and operated by an operator.

(b) Conventional technology In the past, construction machinery was constructed such that the operating equipment was connected to the front of the driver's cab, which was equipped with a control device, a driver's seat, an engine, etc., and was configured to be able to run. As for the structure to be equipped with, it was a structure that would inevitably become large.

(c) Problems that the invention aims to solve For this reason, in this type of construction machine, the length of the driver's cab in the front and back direction must be long, making it difficult to make it compact. The fuel tank had to be made smaller, and the area in front of the driver's seat was also narrower, resulting in a smaller living space, which posed the problem of not being able to create a compact structure.

(d) Means to solve the problem The present invention solves the problem and has a compact structure with a large living space even though it is small.Therefore, the fuel tank and engine are installed at the rear of the driver's cab. The bonnet and radiator cover are arranged side by side, and the front part of the fuel tank fits inside a part of the bonnet cover that extends in front of all of them, so that the entire bonnet cover is formed into a horizontally long planar shape. A concave notch is formed in the center front part of the bonnet cover so that the rear of the driver's seat can be accessed, and both pillars of the canopy are connected to the top surface of the bonnet cover on both sides of the concave notch. It is composed of

(e) Effects Therefore, the driver's seat can be moved toward the rear bonnet cover to increase the passenger space, and the fuel tank can be made large in capacity while being protected from damage. This means that the entire structure can be made small and compact to fit a small machine.

(f) Examples Next, the embodiment shown in the drawings will be described.

FIG. 2 shows a side view of the backhoe, with an earth removal plate 10 extending forward from between both crawlers 9, and an upper part of the front side of the driver's cab A, which is rotatably installed above both crawlers 9. Operation columns 1a and 1b are erected, and a control device 1 consisting of levers is installed above the control columns 1a and 1b, and control columns 11a and 11b are provided on both sides of a driver's seat 2 installed at the rear thereof.
A bracket 12 connected to the front of the driver's cab A has a boom 14 of the work machine B, which has a bucket 13 at the tip.
and boom cylinder 15 are connected to form the same structure as the conventional structure.

At the rear of the driver's cab A, there is a cap 3a located above.
The fuel tank 3 having a handle 4a is placed on the left side, the engine bonnet 4 that is placed on the engine and has a handle 4a is placed in the center, and the radiator cover 5 is placed on the radiator.
are arranged on the right side and arranged side by side in the lateral direction, and a recessed part 6a is provided in the center front part of the bonnet cover 6 that extends in front of all of them so that the rear part of the driver's seat 2 can fit thereinto and access it. On both sides of the bonnet cover 6, which is formed so as to be horizontally long as a whole, there are extending portions 6b extending forward over both sides of the driver's cab A, which are outside the control columns 11a and 11b. .
As shown in the figure, the fuel tank 3 is formed into a large size so as to fit into the fuel tank 3, and the lower end surfaces of both extending portions 6b, 6c and the lower end surface of the center side of the bonnet cover 6 are fixed to the upper surface of the driver's cab A with bolts 16. and configure.

Further, on the upper surface of the bonnet cover 6 on the left side of the recessed notch 6a, a lower support frame 17a of one of the pillars 8 that supports the canopy 7 is attached to a mounting base 18.
The lower support frame 17b of the other support column 8 is connected to the upper surface portion of the bonnet cover 6 on the right side of the recessed notch 6a.

Therefore, even in a small-sized boxhoe, the driver's seat 2 can be placed at the rear, making the operator's living space as wide as possible, and the fuel tank 3 can be made larger. , the front part thereof can be covered and protected by a bonket cover 6.

FIG. 6 shows another example of the structure of the slide guide device between the cylinder 19 and the cover 20 in the work machine B, in which stepped shafts 21 are welded to four locations on the outer periphery of the cylinder 19, respectively. , a resin roller 22 is fitted to the small diameter end side of each stepped shaft 21, and each roller 2
2 can slide and guide the cover 20 while rolling in contact with the cover 20 in the A direction and in surface contact in the B direction, making it easy to replace the rollers 22 and eliminating noise. This allows for good slide guidance without any problems.

(g) Effects of the invention As described above, in the present invention, the rear bonnet cover 6 is formed with a recessed part 6a into which the rear of the driver's seat 2 can be inserted, making it easier for the operator to operate even if the machine is small. This means that the driver's cab can have a large living space, and since the front part of the fuel tank 3 is inserted into a part of the rear part of the bonnet cover 6, the fuel tank 6 has a large capacity. This means that the cab can be protected from damage, and the driver's cab can have a compact structure as a whole, making it suitable for implementation.

[Brief explanation of drawings]

Figure 1 is a plan view of the main parts of an embodiment of the present invention;
Figure 2 is a side view of the backhoe, Figure 3 is a side sectional view of a part of Figure 1, Figure 4 is a side sectional view of another part of Figure 1, and Figure 5 is a side sectional view of part of Figure 1. FIG. 6 shows another example. 1...Control device, 2...Driver's seat, A...Driver's cab, B...Work equipment, 3...Fuel tank, 4...Engine bonnet, 5...Radiator cover, 6
... Bonnet cover, 6a ... Recessed part, 7 ...
Canopy, 8...post.

Claims (1)

[Scope of utility model registration request] In this construction machine, a working machine B is connected to the front of a driver's cab A, which is equipped with a control device 1, a driver's seat 2, an engine, etc., respectively, and is configured to be able to run. , engine bonnet 4, radiator cover 5
are arranged horizontally in parallel, and the front part of the fuel tank 3 fits inside a part of the bonnet cover 6 that extends in front of all of them, so that the entire bonnet cover 6 is formed horizontally long in plane. A recessed part 6a is formed in the center front part of the bonnet cover 6 so that the rear part of the driver's seat 2 can be accessed, and a canopy 7 is formed on the upper surface of the bonnet cover 6 on both sides of the recessed part 6a. A driver's cab structure characterized by being constructed by connecting both supports 8, 8.