JP3720111B2 - Main body structure of a swivel work vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a main body structure of a turning work vehicle.
[0002]
[Prior art]
A conventional main body structure of a revolving work vehicle with a cabin will be described with reference to FIGS. 9 to 13 in the accompanying drawings.
9 is a schematic plan view showing the arrangement structure of the bonnet 2 ′ and the cabin 3 ′ in the conventional main body, FIG. 10 is a perspective view of the conventional bonnet 2 ′, and FIG. 11 is the bonnet 2 ′ in the conventional engine E arrangement portion. 12 is a side sectional view showing the positional relationship between the engine and the cabin 3 ′, FIG. 12 is a side view showing an anti-vibration support structure of an engine and a wiring guide structure of an accelerator cable, and FIG. 13 is a conventional engine. 2 is a side cross-sectional view showing an anti-vibration support structure of an engine by a mount 10. FIG.
[0003]
Conventionally, as shown in Japanese Patent Application Laid-Open No. 7-180183, for example, as shown in FIG. 9, a bonnet 2 ′ and a cabin 3 ′ are mounted on a main body frame 1, and the cabin 3 ′ A structure of a main body of a swing work vehicle having a configuration arranged so as to be surrounded by the rear portion is known. In this configuration, an engine E is disposed at a position below the rear portion of the cabin 3 ′. As shown in FIGS. 10 and 11, the engine E is installed in the cabin 3 ′ in the hood 2 ′. An insertion portion 2′a to be inserted into the cabin 3 ′ is provided in the proximity portion. Therefore, in a plan view, the insertion portion 2′a is overlapped with the rear portion of the bonnet 3 ′ as shown in FIG. ing.
[0004]
In addition, a structure in which an engine is installed in a hood of a swivel work vehicle and is vibration-proofed and supported by a vibration-proof rubber on the bottom of the main body frame is known. Conventionally, as shown in FIGS. 12 and 13, an engine mount 10, which is a bracket for mounting an engine and an anti-vibration rubber, includes an engine attachment plate portion 10 b for screwing to the side surface of the engine E, and an anti-vibration rubber G. The anti-vibration rubber mounting plate portion 10a, which is an attachment portion, is connected to the anti-vibration rubber G, and the anti-vibration rubber mounting plate portion 10a is annularly attached to the anti-vibration rubber G. In order to restrict vertical movement, as shown in FIG. 13, the vibration-proof rubber mounting plate portion 10 a of the vibration-proof rubber mounting plate portion 10 a is formed from the presser plate 11 and the engine mounting base 12 that are fastened together by bolts 13 above and below the vibration-proof rubber G. Stopper members 11a and 12a are provided so as to protrude from the upper and lower surfaces, respectively.
[0005]
In addition, a wire such as an accelerator cable W is wired in the bonnet and passes through the vicinity of the engine. For this wiring guidance, an outer wire receiving member 14 is conventionally fixed on the side of the engine as shown in FIG. In this case, a wire such as an accelerator wire is passed.
[0006]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION An object of the present invention is to provide a swivel work vehicle for easily removing a bonnet or the like and achieving a reduction in vibration isolating support parts of an engine in the bonnet.
In the main body structure of the conventional turning work vehicle, first, in the conventional cabin and bonnet mounting structure, as described above, the insertion portion 2'a of the bonnet 2 'and the rear portion of the cabin 3' overlap vertically. Therefore, for example, in order to perform maintenance work on the engine, tank, or hydraulic equipment in the bonnet, if the bonnet 2 ′ is to be removed, the cabin 3 ′ must also be removed, which requires great labor.
[0007]
Further, in the anti-vibration support structure of the engine, since the anti-vibration rubber mounting plate portion 10a in the engine mount 10 is plate-like, in order to restrict the vertical movement, as described above, The stopper members 11a and 12a are attached to the engine mount 12 by welding or the like, which leads to an increase in the number of parts and the number of processing steps. Moreover, there are many exposed portions of the anti-vibration rubber G, and there is a risk of damage due to contact with other members.
[0008]
The outer wire receiving member 14 for guiding the arrangement (accelerator wire) in the bonnet is conventionally fixed as a separate member on the side of the engine as described above, and a bolting process is also required. There were many.
[0009]
[Means for Solving the Problems]
The present invention uses the following means in order to solve the above problems.
In the main part of the swivel work vehicle equipped with the bonnet (2) and the cabin (3), the bonnet (2) and the cabin (3) are close to each other at the position of the cabin (3) and the non-polymerized position. 2), a notch (2a) is provided in the bonnet (2), a part of the engine (E) is protruded from the notch (2a), and the cabin (3 ) Facing the inclined portion (3a) formed at the lower rear end of the engine (E) so that the protruding portion of the engine (E) is covered by the inclined portion (3a). The engine mount (5) that supports the anti-vibration rubber (G) protrudes from the engine (E), and the engine mount (5) is fixed to the engine (E). Engine mounting plate (5b) and anti-vibration rubber (G) It is comprised by the vibration-proof rubber attachment cylinder part (5a) which comprised the upper and lower cylinder part to include, and an outer wire receiving member (9) is united from the engine attachment board part (5b) of this engine mount (5). It is a projecting one.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings.
1 is a front view of a revolving work vehicle with a cabin, FIG. 2 is also a rear view, FIG. 3 is a left side view, FIG. 4 is a right side view, and FIG.
[0011]
6 is a plan view showing the arrangement structure of the bonnet 2 and the cabin 3 in the main body according to the present invention, FIG. 7 is a perspective view of the bonnet 2, and FIG. 8 is the bonnet 2 and the cabin 3 in the vicinity of the arrangement position of the engine E. FIG. 14 is a side sectional view showing an anti-vibration support structure of the engine by the engine mount 5.
[0012]
15 is a front view of the engine mount 5, FIG. 16 is also a side view, FIG. 17 is also a plan view, and FIG. 18 is a view showing the engine mount 5 ′ provided with a protruding outer wire receiving member 9, and FIG. (B) is a front view, (c) is a side view.
[0013]
According to the present invention, a bonnet 2 and a cabin 3 are mounted on a main body portion, that is, a main body frame 1, which is turnably mounted on a crawler traveling device 4 in the swivel type work vehicle shown in FIGS. 1 to 5. It is the part which did. (In the figure, 1 'is a balancer that is attached to the rear end of the main body frame 1 and puts the center of gravity behind.) First, the bonnet 2 and the cabin 3 will be described in terms of their external appearance. 2 covers the vicinity of the rear end of the upper part of the main body frame 1 to the right side portion, and the left side portion is curved along the curved shape of the cabin 3 so as to be close to the cabin 3.
[0014]
As can be seen in FIG. 6, the engine E and the hydraulic equipment attached thereto (all are collectively referred to as the engine E), although most of the parts are installed in the hood 2. In the arrangement space, a part is located below the rear portion of the cabin 3. Conventionally, in order to enclose a part of the engine E, as described above, the insertion portion 2′a to be inserted below the rear portion of the cabin 3 ′ is formed, but in this embodiment, first, in the bonnet 2, 7 and 8, a notch 2a is provided so that a part of the engine E can protrude to the outside of the bonnet 2, and this notch 2a is formed at the lower part of the rear end of the cabin 3 as shown in FIG. It is made to oppose the inclined part 3a formed in this. That is, conventionally, a part of the engine E below the bonnet rear portion, which has been included by extending the bonnet, is covered with the inclined portion 3a at the rear end of the cabin 3 as shown in FIGS. Since the inclined portion 3a hits the lower position of the seat base in the cabin 3, even if such an inclination is formed, the living space in the cabin is not impaired.
[0015]
By doing so, there is no upper and lower overlapping portion with the bonnet 2 that is conventionally provided to enclose a part of the engine E at the rear part of the cabin 3, and therefore the bonnet 2 and the cabin 3 are moved vertically. It became possible to attach and detach independently without overlapping.
[0016]
Next, the anti-vibration support structure for the engine E in the bonnet 2 will be described with reference to FIGS.
The engine mount 5, which is a mounting bracket for the vibration isolating rubber and the engine, has the shape shown in FIGS. 15 to 17, and an engine mounting plate portion 5b that is screwed to the side of the engine E, and upper and lower cylindrical vibration isolating rubbers. It is the shape which connected the attachment cylinder part 5a. In the vibration-proof rubber mounting cylinder portion 5a, a vertical through-hole is provided in a shape that allows the vibration-proof rubber G to be fitted therein, and the vibration-proof rubber G is attached to the vibration-proof rubber mounting tube portion 5a as shown in FIG. It fits inside. A presser plate 6 is disposed at the upper end of the vibration-proof rubber G attached in this way, and an engine mounting base 7 is disposed at the lower end. The bolt 8 is threaded through the top and bottom, and the presser plate 6, vibration-proof rubber G, And the engine mount 7 is fastened together.
[0017]
If the attachment portion to the vibration isolating rubber G is plate-like as in the prior art, the stopper plate 6 and the engine mounting base 7 are provided with stoppers for restricting vertical movement (corresponding to the stopper portions 11a and 12a). However, in the anti-vibration rubber mounting bracket 5 according to the present invention, the anti-vibration rubber mounting cylinder portion 5a has a sufficient vertical length, and the upper end or lower end of the anti-vibration rubber mounting cylinder portion 5a Since it is pressed against the presser plate 6 or the engine mounting base 7, there is no need to attach a separate stopper in this way.
[0018]
Finally, the wiring guide structure near the engine will be described.
In the vicinity of the engine E, as shown in FIG. 12 related to the prior art, an accelerator cable W or the like is wired and connected to an injection amount adjusting mechanism of a fuel injection pump installed in the engine E, and this outer wire is guided and fixed. For this purpose, the outer wire receiving member 9 is projected from the engine mounting plate portion 5′b of the engine mount 5 ′. (The engine mount 5 ′ shown in FIG. 18 is different in shape from the engine mount 5 shown in FIGS. 14 to 17, but has the same specifications, and the attachment part to the anti-vibration rubber is the anti-vibration rubber attachment cylinder part 5. The outer wire receiving member 9 is integrally attached to the engine mounting plate portion 5'b by welding, and the outer wire receiving member 14 is separately attached to the engine side surface as in the prior art. There is no need for a work such as screwing.
[0019]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
First , because it is necessary to perform maintenance work on each member in the bonnet, when removing the bonnet, it is not necessary to remove the cabin, and the attachment / detachment work is facilitated.
[0020]
Second, in the anti-vibration support structure of the engine, the attachment portion to the anti-vibration rubber in the mounting bracket for the engine and the anti-vibration rubber is formed into a cylindrical shape so that the attachment portions are located near the upper and lower ends of the anti-vibration rubber. Therefore, it is not necessary to separately attach a stopper to the holding plate or engine mounting base that is attached to the top and bottom of the anti-vibration rubber, contributing to the reduction in the number of parts and the number of processing steps. In addition, the exposed portion of the anti-vibration rubber is almost eliminated, and the anti-vibration rubber is reliably protected.
[0021]
Thirdly, since the outer wire receiving member for guiding the wiring wire to the vicinity of the engine is attached to the bracket, a work such as screwing the outer wire receiving member to the side of the engine or the like is not required. This leads to simplification of wiring work and reduction of the number of parts.
[Brief description of the drawings]
FIG. 1 is a front view of a revolving work vehicle with a cabin.
FIG. 2 is also a rear view.
FIG. 3 is a left side view of the same.
FIG. 4 is a right side view of the same.
FIG. 5 is also a plan view.
6 is a plan view showing an arrangement structure of the bonnet 2 and the cabin 3 in the main body according to the present invention. FIG.
7 is a perspective view of the bonnet 2. FIG.
FIG. 8 is a side cross-sectional view showing the positional relationship between the hood 2 and the cabin 3 in the vicinity of the position where the engine E is disposed.
FIG. 9 is a schematic plan view showing an arrangement structure of a bonnet 2 ′ and a cabin 3 ′ in a conventional main body.
FIG. 10 is a perspective view of a conventional bonnet 2 ′.
FIG. 11 is a side sectional view showing a positional relationship between a bonnet 2 ′ and a cabin 3 ′ in a conventional engine E mounting portion.
FIG. 12 is a side view showing an anti-vibration support structure for an engine and a wiring guide structure for an accelerator cable installed in a conventional bonnet.
13 is a side cross-sectional view showing an anti-vibration support structure for an engine using a conventional engine mount 10. FIG.
FIG. 14 is a side sectional view showing an anti-vibration support structure for the engine by the engine mount 5;
FIG. 15 is a front view of the engine mount 5;
FIG. 16 is a side view of the same.
FIG. 17 is a plan view of the same.
18A and 18B are views showing an engine mount 5 ′ provided with an outer wire receiving member 9 projecting, where FIG. 18A is a plan view, FIG. 18B is a front view, and FIG. 18C is a side view.
[Explanation of symbols]
E Engine 1 Body frame 2 Bonnet 2a Notch 3 Cabin 3a Inclined part 5 (5 ') Engine mount 5a (5'a) Anti-vibration rubber mounting cylinder 5b (5'b) Engine mounting plate 6 Presser plate 7 Engine mounting Base 8 Bolt 9 Outer wire receiving member

Claims (1)

In the main part of the swivel work vehicle equipped with the bonnet (2) and the cabin (3), the bonnet (2) and the cabin (3) are close to each other at the position of the cabin (3) and the non-polymerized position. 2), a notch (2a) is provided in the bonnet (2), a part of the engine (E) is protruded from the notch (2a), and the cabin (3 ) Facing the inclined portion (3a) formed at the lower rear end of the engine (E) so that the protruding portion of the engine (E) is covered by the inclined portion (3a). ) In the lower position of the seat base in
The engine mount (5) that supports the anti-vibration rubber (G) protrudes from the engine (E). The engine mount (5) includes an engine mounting plate (5b) that is fixed to the engine (E), and an anti-vibration rubber. (G) is composed of an anti-vibration rubber mounting cylinder portion (5a) having upper and lower cylindrical portions, and an outer wire receiving member (9) from the engine mounting plate portion (5b) of the engine mount (5). The main body structure of a swivel type work vehicle characterized by integrally projecting the

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