JP2007056493A - Cover body for construction equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover body for construction equipment which does not hinder the maintenance of a mechanical device in an engine room, and contributes to the improvement of the working efficiency of the maintenance. <P>SOLUTION: When the engine cover 11 for covering the engine room 6 is supported by a machine body via a hinge 12 rotatable on a vertical shaft in a manner of being rockable when opening and closing the machine body, the engine cover 11 is made detachable from the hinge 12, and a fixing member 15 for fixing the engine cover 11 in an open state is provided for the engine room. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention belongs to a technical field of a cover body that covers a storage chamber such as an engine room in a construction machine such as a hydraulic excavator.

In general, construction machines such as excavators are equipped with various mechanical devices such as engines, radiators, hydraulic pumps, and batteries, but these mechanical devices require maintenance such as inspection, repair, and parts replacement. Therefore, a storage chamber (for example, an engine room) in which these mechanical devices are stored is usually covered with a cover body that can be freely opened and closed.
By the way, in a small model such as a mini hydraulic excavator among construction machines, since many mechanical devices are mounted on a small vehicle body, maintenance may be inferior, and improvement is desired. Especially for rental specification cars, it is necessary to perform sufficient maintenance when picking up from the customer or renting out, so inferior maintenance may affect efficient rental and improve maintenance. Required.
Therefore, in order to improve maintainability, attempts have been made to enlarge the cover body that opens and closes the storage chamber as much as possible, or to prevent the opened cover body from interfering with maintenance work. In some hydraulic excavators, an engine cover that covers an engine room provided at the rear of the machine body is provided so as to be swingable around a vertical axis (see, for example, Patent Document 1). In this case, the opened engine cover is not located above the engine room, and therefore, it is easy to access the mechanical devices in the engine room, which can contribute to improvement in maintainability.
JP 2004-285699 A

  However, in Patent Document 1, the opened cover body is located on the side of the worker who performs maintenance, but when the opened cover body moves in a strong wind or the like, not only does it interfere with maintenance, There is also a risk of hitting workers. Furthermore, when maintenance is performed in a narrow work area, the opened cover body itself may interfere with the maintenance worker, and there is a problem to be solved by the present invention.

The present invention has been created in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 covers a storage chamber for storing mechanical devices mounted on the fuselage. When the cover body is supported on the machine body side through the hinge so as to be openable and swingable, the cover body is configured to be detachable from the hinge portion.
And by doing in this way, it becomes possible to remove the cover body as necessary, and even when performing maintenance in a narrow work place, the cover body does not get in the way, and the work efficiency of maintenance is improved. be able to.
According to a second aspect of the present invention, in the first aspect, the hinge is fixed to either the cover body or the machine body side, and the hinge is fixed to either the cover body or the machine body side. It is formed using the fitting cylinder part which fits freely and freely in the direction of rotation around the axis.
And by doing in this way, attachment / detachment of a cover body can be performed easily.
According to a third aspect of the present invention, in the first aspect of the present invention, the hinge includes a fitting cylinder portion fixed to the cover body and the machine body side, and a center that can be inserted into and removed from the fitting cylinder portion and is rotatable about the axis. It is formed using a shaft.
And by doing in this way, attachment / detachment of a cover body can be performed easily.
According to a fourth aspect of the present invention, in any one of the first to third aspects, a fixing member for fixing the open cover body is provided.
In this way, it is possible to avoid the possibility that the opened cover body will move due to strong winds and the like, which will interfere with maintenance or hit an operator, thereby contributing to improvement in maintenance performance.
According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the cover body is an engine cover that covers an engine room disposed at a rear portion of the body of the hydraulic excavator.
In this way, it is possible to improve the maintainability of the engine room arranged at the rear part of the machine body of the hydraulic excavator.

  Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a hydraulic excavator. The hydraulic excavator 1 includes a crawler-type lower traveling body 2, an upper revolving body 3 that is pivotably supported above the lower traveling body 2, and the upper revolving body 3. The hydraulic excavator 1 according to the present embodiment is a rear ultra-small swivel type model, and is composed of an upper swivel body. 3 has a substantially circular shape centered on the turning center in plan view, except for the front end side on which the front work machine 5 is mounted.

  Reference numeral 6 denotes an engine room disposed at the rear part of the upper swing body 3. The engine room 6 accommodates an engine 7, a muffler 8, an air cleaner 9, and other engine peripheral devices.

  The engine room 6 is open on the upper rear side and the rear side, and the opening 10 is covered with an engine cover 11 so as to be freely opened and closed. The engine cover 11 is formed by integrally forming an upper surface portion 11 a that covers the upper rear side of the engine room 6 and a rear plate 11 b that covers the rear side of the engine room 6. The rear plate 11 b In order to correspond to the rear shape of the upper swing body 3 described above, it is formed in an arc shape in plan view.

  The engine cover 11 is attached to the left side edge of the opening 10 of the engine room 6 via a hinge 12 described later so as to be swingable and detachable.

  The hinge 12 is fixed to the left side edge of the engine cover 11 and the vertical axis 13 protruding upward from the cylindrical shaft support part 13 a fixed to the left side edge of the opening 10. It is formed from the fitting cylinder part 14 which can be inserted / removed from the side and can be rotated around the axis. The engine cover 11 is attached to the machine body side via the hinge 12 by fitting the fitting cylinder part 14 to the vertical axis 13 from above, while the engine cover 11 is lifted to bring the fitting cylinder part 14 into the vertical axis. The engine cover 11 attached to the airframe side can be removed from the airframe side by pulling it out from the airframe 13, and the opening 10 of the engine room 6 is opened when the fitting cylinder portion 14 rotates around the vertical axis 13. It is configured to be able to open and close in a horizontal direction between a closed posture and a closed posture in which the opening 10 is opened. In this embodiment, a pair of upper and lower hinges 12 are provided. However, the present invention is not limited to this, and an appropriate number of hinges 12 can be provided.

On the other hand, 15 is a fixing member for fixing the engine cover 11 in the open posture, and the fixing member 15 is a stay whose base end is rotatably supported on the lower left side of the opening 10 of the engine room 6. 16 and a cylindrical hole portion 17 fixed to the lower left portion of the engine cover 11 so as to be detachably engaged with a hook 16a formed at the distal end portion of the stay 16. Then, with the engine cover 11 in the open position, the hook 16a of the stay 16 is engaged with the tube hole portion 17 so that the opening and closing swinging of the engine cover 11 is restricted and the open state is fixed. It has become.
In the figure, 18 is a counterweight, 19 is a seat on which an operator sits, and 20 is a kinopi for protecting the operator's overhead.

In the present embodiment configured as described, when performing maintenance in the engine room 6 arranged at the rear of the machine body, the engine cover 11 that covers the opening 10 of the engine room 6 is opened. The engine cover 11 is supported by a hinge 12 that is rotatable about a vertical axis 13 so as to be able to open and close in a horizontal direction. Thus, when the engine cover 11 is opened, the engine cover 11 is not located above the engine room 6, and it is easy to access mechanical devices in the engine room 6 even if it is a small model. In this case, however, the engine cover 11 can be detached from the hinge 12 portion.
As a result, when performing maintenance in a narrow work place, the engine cover 11 can be removed from the airframe, so that the engine cover 11 does not interfere with maintenance and the maintenance work efficiency can be improved. it can. Moreover, the engine cover 11 can be easily attached and detached by inserting and removing the fitting cylinder portion 14 on the engine cover 11 side with respect to the longitudinal axis 13 on the machine body side constituting the hinge 12. There is an advantage that if the cover 11 is opened even a little, it can be removed.

  Further, in this case, when maintenance is performed with the engine cover 11 mounted on the airframe, the engine cover 11 in an open posture can be fixed by the fixing member 15, and thus the opened engine cover 11 can be Therefore, it is possible to avoid the possibility of moving in the way of maintenance and colliding with workers, which can greatly contribute to the improvement of maintenance.

Needless to say, the present invention is not limited to the above-described embodiment. For example, the hinge is fixed to the engine cover side and the vertical axis is fixed to the fuselage side. It can also comprise using the fitting cylinder part fitted so that rotation is freely possible. In this case, the vertical axis can be inserted into and removed from the fitting cylinder by lifting the engine cover by projecting the vertical axis downward from the shaft support.
In the above embodiment, the central axis of the hinge is the vertical axis and the engine cover is opened and closed in the horizontal direction, but the central axis of the hinge is the horizontal axis and the engine cover is in the vertical direction. The present invention can be implemented even with a structure that swings open and close. In particular, in a small model such as a mini excavator, in which the engine cover swings up and down, there are cases where an operator may have to perform maintenance so as to sink under the engine cover. In this case, the workability of maintenance can be greatly improved by removing the engine cover from the airframe.
Further, FIG. 6A shows another example of the hinge. The hinge 21 is connected to the fitting cylinder portions 22 and 23 fixed to the cover body and the machine body side, and the fitting cylinder portions 22 and 23, respectively. It is formed using a central shaft 24 that can be freely inserted and removed and rotated in the direction around the axis, and even if such a hinge 21 is used, the cover body can be attached to and detached from the fuselage by inserting and removing the central shaft 24. Can do.
Furthermore, in order to prevent the center shaft from slipping out of the fitting tube portion, the end of the center shaft 25 has a larger diameter than the tube hole of the fitting tube portion as shown in FIG. The retaining portion 25a may be formed, or the retaining pin 26 may be detachably mounted.
In addition, the present invention can be applied not only to an engine cover that covers an engine room, but also to a cover body that covers a storage chamber that stores a cooling unit such as a radiator or an oil cooler. Although it can be applied to various construction machines, it is particularly useful for small models.

It is a side view of a hydraulic excavator. It is a top view of a hydraulic excavator. It is a rear view of a hydraulic excavator in a state where an engine cover is fixed in an open posture. It is a rear view of a hydraulic excavator in the state where an engine cover was removed. (A) is a perspective view of the hinge and the fixing member in a state where the engine cover is removed, and (B) is a perspective view of the hinge and the fixing member in a state where the engine cover is fixed in an open posture. (A) is a perspective view of the hinge which shows another example, (B) is a perspective view of the center axis | shaft which provided the retaining prevention.

Explanation of symbols

6 Engine room (storage room)
11 Engine cover (cover body)
12 Hinge 13 Vertical axis (central axis)
14 fitting cylinder part 15 fixing member 21 hinge 22, 23 fitting cylinder part 24 central axis

Claims (5)

  When the cover body that covers the storage chamber for storing the mechanical devices mounted on the machine body is supported on the machine body side through the hinge so that it can be opened and closed and swingable, the cover body is configured to be detachable from the hinge part. A cover body in a featured construction machine.   2. The hinge according to claim 1, wherein the hinge is fixed to either the cover body or the machine body side, and the hinge is fixed to either the cover body or the machine body side, and the center axis is detachable and rotatable around the axis. A cover body in a construction machine, characterized in that the cover body is formed using a fitting cylinder portion that fits into the construction machine.   In claim 1, the hinge is formed by using a fitting cylinder part fixed to the cover body and the machine body side, and a central axis that is fitted to the fitting cylinder part so as to be freely inserted and removed and rotatable about the axis. A cover body in a construction machine.   The cover body in a construction machine according to any one of claims 1 to 3, further comprising a fixing member that fixes the cover body in an open state.   5. The cover body in a construction machine according to claim 1, wherein the cover body is an engine cover that covers an engine room disposed at a rear part of a body of a hydraulic excavator.

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