JP2001040704A - Cab lower side cover for construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily conduct the inspection/repair work for a hydraulic apparatus arranged under a cab floor by providing a rotary device on a front cover, and making the front cover openable and closable longitudinally or laterally. SOLUTION: A front cover 31 is fitted openably and closably by hinges 33. The front cover 31 is provided with a vent hole 35 and a handhold 36, and a lug pin 36 for locking a support rod 38 is fixed to a bracket 29 to hold the opened state. The support rod 38 is held on a hold section 43. For an inspection, the handhold 36 and an action plate are gripped and pulled to this side, and the front cover 31 is turned over to the front to be opened. One end of the support rod 38 (the end where a lock ring is provided) is removed from the hold section 43, and its end section is fixed with a means such as a snap pin. Inspection, maintenance or the like is conducted in this state. The front cover 31 is opened to the front, however it may be opened to the left or the right by providing the hinges 33 at the right end of the left end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention belongs to the technical field of a cover structure provided below a cab of a construction machine.

[0002]

2. Description of the Related Art Conventionally, a construction machine such as a hydraulic shovel is provided with a cab (hereinafter referred to as a cab) for facilitating various operations by an operator and protecting the operator's safety. FIG. 4 is an overall perspective view showing an example of a conventional hydraulic excavator. In FIG. 4, a hydraulic excavator 10 has a lower traveling body 11 having traveling crawler belts 12 on both left and right sides.
Upper revolving superstructure 1 rotatably provided on lower traveling vehicle 11
3, a house 14 for storing hydraulic equipment such as a hydraulic pump provided on the upper swing body 13, a boom 15 for attaching and operating a working machine, a crawler 16 and a cab 17 used for leveling work.

In such a construction machine such as a hydraulic shovel, particularly a small construction machine, a floor (not shown) is provided in the cab 17, and hydraulic equipment such as valves are arranged under the floor. Some are. A cover 20 for covering a space portion (space) under the floor is attached to the cab 17. FIG. 5 shows an example of a conventional cab lower cover. FIG. 5A is a top view of the lower cover, and FIG. 5B is a right side view. The cover 20 includes a side cover 21 and a front cover 22. Conventionally, the cover was integrally formed by welding or the like. The cover 20 is provided with a plurality of bolt holes (idiot holes) 21a or notches 22a for bolts, and female screws are cut by bolts 23 so as to be attached to the lower frame of the cab body 17 and fixed.

Therefore, when checking valves and the like under the cab with a conventional construction machine, it is necessary to first remove the cab cover 20. In order to remove the cab cover 20, the operation must be performed using a working tool such as a spanner or a wrench. Therefore, the inspection work has been troublesome. Further, it is necessary to attach the cab cover 20 to the original state after the inspection, but there are problems such as the bolts 23 and the like being lost or the work tools being forgotten to be cleared and being lost.

[0005]

As described above, as described above,
In a conventional construction machine, it is necessary to remove and attach the cab cover 20 fixed with the bolts 23 in order to inspect and repair valves disposed under the cab floor, which makes inspection and repair work cumbersome. Was. SUMMARY OF THE INVENTION The present invention has been made under the above-mentioned background, and has as its object to provide a cab cover that can easily inspect and repair a hydraulic device disposed under a cab floor.

[0006]

The present invention employs the following means to solve the above-mentioned problems. That is, claim 1
The invention described in the above is characterized in that in the cover for surrounding the space below the cab of the construction machine, a rotation means is provided on the front cover so that the front cover can be opened and closed forward and backward or left and right.

According to a second aspect of the present invention, in the first aspect of the present invention, the front cover is configured so as not to interfere with the crawler even when the construction machine body is turned in an open state. .

According to a third aspect of the present invention, in the first or second aspect of the present invention, a holding means for holding the front cover open and closed is provided. .

According to a fourth aspect of the present invention, in the first to third aspects of the present invention, the open state holding means of the front cover includes a first bracket on the front cover and the side cover.
A second bracket is fixedly provided, and a support rod for connecting the first and second brackets when the front cover is opened is provided with one end rotatably connected and the other end detachably connected. It is characterized by:

[0010]

FIG. 1 shows an embodiment of the present invention.
(A) is a plan view as viewed from below, and (B) is a side view from the right side. Hereinafter, embodiments of the present invention will be described with reference to the drawings. The cab cover 30 includes a front cover 31 and a lower side cover 32. Front cover 31
Are mounted to be openable and closable by hinges 33, 33.
The other of the hinges 33 of the front cover 31 is fixed to a lower frame or the like (not shown) of the cab. Front cover 31
Are provided with a ventilation hole 35 and a handle 36, and a projection pin 37 for locking a support rod 38 is fixedly mounted on the bracket 29 in order to maintain an open state. The bracket 29 is fixed to the side panel of the front cover 31 by welding or the like. The size and position of the front cover are determined so that interference will not occur even if the crawler 16 is operated by mistake while the front cover is open.

The locking between the support rod 38 and the projection pin 37 is performed by providing a pin hole at the end of the projection pin 37 and providing a locking ring 38a at the end of the support rod 38 and fixing the pin with a pine needle pin. It may be. Alternatively, a ring-shaped groove may be provided in the projection pin 37, and a locking member fitted into the groove may be provided inside the locking ring 38a so that the locking member can be locked by a spring. As means for holding and opening and closing the front cover 31 in a closed state, an operating plate for operating a hook (not shown) is provided inside the handle 36 to hold the front cover 31 freely openable and closed. It may be configured as follows. The hooks, not shown, are for holding the front cover 31 in a closed state.

Also, the bracket 3 is attached to the lower side cover 32.
9 is fixedly mounted thereon, and a projection pin 40 is provided thereon. The support rod 38 is rotatably provided on the projection pin 40 and is held so as not to come off by a pine needle or the like.
It is configured such that the front cover 31 can be fixed in an open state. Thereby, inspection and maintenance of the hydraulic equipment and the like disposed under the floor can be easily performed. Further, a holding portion 43 for holding the support rod 38 above the projection pin 40 is provided on the bracket 42. The holding portion 43 may be configured to hold the support rod 38 by an elastic body,
A hook provided with a hook and other means may be used. The bracket 42
Are fixed to the lower side cover 32.

The lower side cover 32 is formed independently of the front cover 31. Attachment of the lower side cover 32
The upper end thereof is partially inserted in a state of being closely attached to the inside of the cab frame 34 extending downward (or separately provided), and the lower end thereof is formed by passing a bolt 45 through a bolt hole (a fool hole or a notch) provided at a lower end portion. It is configured so that it can be attached to. Therefore, the upper and lower ends of the lower side cover 32 are fixed. The lower side of hydraulic equipment such as valves disposed under the cab floor is covered with another cover (not shown) to prevent sand and sludge from entering.

Since the present embodiment is configured as described above, it functions as follows. That is, as shown in FIG. 2, the support rod 38 is always held by the holding portion 43 (when no inspection is performed). Also, when performing an inspection, etc., grasp the handle 36 (and the operation plate) and pull it forward.
Tilt the front cover 31 forward and open it. Next, as shown in FIG. 3, one end of the support rod 38 (the end provided with the locking ring) is detached from the holding portion 43, and the end is fixed by means of a pine needle or the like. Inspection and maintenance are performed in this state.

When replacing parts or performing complicated maintenance, the bolts 45 may be removed and the lower side cover 32 may be removed. Therefore, in this embodiment, simple work such as inspection of hydraulic equipment under the cab floor can be performed by opening the front cover 31, and when performing complicated work such as replacement of parts, the lower side cover 32 is also removed. Can be done. For this reason, there is an effect that the inspection work can be easily performed, and there is also an effect that the inspection work can be performed with ease because there is no problem such as forgetting to tighten the bolts or clearing the work tool at the time of the inspection work. .

The embodiments and examples of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the examples, and changes in design and the like may be made without departing from the gist of the present invention. Even if there is, it is included in the present invention. For example, the support rod may be formed of a bendable link, and both ends may be rotatable fixed ends. Although the front cover 31 is opened forward, a hinge may be provided at the right end or the left end, and the front cover 31 may be opened leftward or rightward.

[0017]

As described above, according to the structure of the present invention, the work such as inspection of the hydraulic equipment under the cab floor can be performed by opening the front cover 31, so that the inspection work can be easily performed. There is.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. (A) is a bottom plan view, and (B) is a side view.

FIG. 2 shows a state in which a front cover of the embodiment is closed.

FIG. 3 shows a state in which a front cover of the embodiment is opened.

FIG. 4 shows a conventional hydraulic excavator.

FIG. 5 shows a cab lower cover used in a conventional hydraulic excavator.

[Explanation of symbols]

 29 Bracket (first bracket) 31 Front cover 32 Cab lower side cover 33 Hinge (rotating means) 37 Pin 38 Support rod 39 Bracket (second bracket) 43 Holder

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 17, 1999 (1999.8.1)
7)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG. 2

FIG. 3

FIG.

FIG. 4

FIG. 5

Claims (4)

[Claims] 1. A cover for surrounding a space below a cab of a construction machine, wherein a rotation means is provided on the front cover so that the front cover can be opened and closed forward and backward or left and right. Cab lower cover. 2. The cab lower cover of a construction machine according to claim 1, wherein the front cover is configured so as not to interfere with a crawler even when the construction machine main body is turned in an open state. 3. The cab under a construction machine according to claim 1, further comprising holding means for holding the front cover in an open state and a closed state. Side cover. 4. The front cover open state holding means includes first and second brackets fixed to the front cover and the side cover, and a gap between the first and second brackets when the front cover is opened. The cab lower cover of a construction machine according to claim 4, wherein one end of the supporting rod to be connected is rotatably connected and the other end is removably connected.