JPH0594065U - Wheel type work machine - Google Patents

Abstract

(57) [Summary] [Purpose] To improve workability and safety when performing maintenance, inspection, and maintenance of the engine in the engine compartment. [Configuration] Upper side doors 22 that can be opened and closed in the front and rear directions on the left and right side covers 21A that form an engine compartment 21
And a lower side door 25 that can be opened and closed upward and downward below the upper side door 22, and a stopper that holds the lower side door 25 in a horizontal state when the lower side door 25 is opened. A plate 27 is provided. This widens the opening of the side cover 21A and also uses the lower side door 25 as a scaffolding board.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wheel type working machine such as a wheel loader, a wheel type hydraulic excavator, a hydraulic crane, and the like, and more particularly to a wheel type working machine having an engine room located at a rear portion of a driver's cab.

[0002]

[Prior Art]

 In general, a wheel type working machine in which an engine is installed in an engine compartment uses an engine as a power source to transmit power to one or both of the front and rear tires, and to use a working device while self-propelled. The work is done.

Therefore, as a typical example of the wheel type working machine according to the conventional technology, a wheel loader will be described as an example and described with reference to FIGS. 4 and 5.

In the drawings, reference numeral 1 denotes a rear vehicle body, and the rear vehicle body 1 is disposed in a driver's cab 2 where an operator rides and performs a driving operation, and is arranged at a rear portion of the driver's cab 2 and has an internal structure. The engine room 4 accommodating the engine 3 in the front, the rear wheel tires 6 and 6 provided on the left and right sides of the axle housing 5, and the balance weight 7 provided on the rear end side of the engine room 4 It is configured.

Here, the engine compartment 4 is a box formed by left and right side covers 4A, 4A forming substantially vertical flat surfaces, a roof cover 4B serving as a ceiling, and a rear cover 4C closing a rear end. It is formed in a shape. The left and right side doors 9 and 9 which can be opened and closed in the front and rear directions via hinges 8 and 8 are attached to the side covers 4A so as to form a part of the side covers 4A. The side doors 9 are opened to perform maintenance, inspection, and maintenance of the engine 3 and its peripheral portion. In this way, when the side door 9 is opened, the height dimension of the side door 9 is formed relatively narrow so that the side door 9 does not interfere with the rear wheel tire 6.

Next, reference numeral 10 denotes a front vehicle body, and the front vehicle body 10 is provided with a front frame which is rotatable leftward and rightward with respect to the rear vehicle body 1 via a connecting bracket (not shown). 11, a pair of left and right arms 12, 12 whose one end side is supported by the front frame 11, a loader bucket 13 as a working device provided on the other end side of each arm 12, and each arm 12. A pair of left and right arm cylinders 14 and 14 (however, one is not shown) which is moved up and down, a bucket cylinder 15 for rotating the loader bucket 13, and an axle housing (not shown). The front wheel tires 16 and 16 are provided on both the left and right sides of the vehicle (however, one of them is not shown). A steering cylinder 17 is provided between the rear vehicle body 1 and the front vehicle body 10 so that the front vehicle body 10 can be steered leftward and rightward.

The wheel loader according to the conventional technology is configured as described above, but it drives the engine 3 to run the tires 16 for the front wheels and the tires 6 for the rear wheels via the drive shaft and the like, and The pressure oil is supplied to and discharged from the arm cylinder 14, the bucket cylinder 15, the steering cylinder 17, and the like, and the loader bucket 13 performs the work of transporting earth and sand and the work of discharging soil.

[0008]

[Problems to be solved by the device]

 By the way, the engine 3 needs to be constantly maintained, inspected and serviced. Therefore, the operator opens the side doors 9 that are openably and closably mounted on the left and right side covers 4A of the engine room 4 with the hinge 8 as a fulcrum, and performs maintenance of the engine 3 and its peripheral parts. Inspections and maintenance are performed.

However, the side door 9 according to the related art is mounted relatively on the upper side so as not to interfere with the rear wheel tire 6 when the door is opened, and the height dimension is limited as shown in FIG. For this reason, there is a problem that the opening when the engine 3 is maintained and inspected is limited to a certain range, and the workability is poor.

On the other hand, in a large wheel loader with a high engine compartment 4, the side cover 4 A does not have a proper footing, and when the engine 3 is maintained and inspected, the worker wears the tire 6 for the rear wheels. It is the actual situation to ride and use the tire 6 instead of the scaffolding, and there is a problem in safety.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is safe and easy to maintain, inspect, and inspect the engine by widening the opening of the engine compartment and securing an appropriate scaffolding. The purpose is to provide a wheel-type working machine capable of performing maintenance work and the like.

[0012]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a vehicle body having a driver's cab and an engine compartment at the rear of the driver's cab, which houses an engine, and front and rear tires for movably supporting the vehicle. And a working device provided on the vehicle body, wherein the engine compartment is formed by left and right side covers, a roof cover and a rear cover. , At least one side cover includes an upper side door that can be opened and closed in the front and rear directions, and a lower side door that is located below the upper side door and that can be opened and closed in the upper and lower directions. The side door is characterized by being provided with a horizontal holding member that holds the lower side door in a horizontal state when the lower side door is opened.

[0013]

[Action]

 With this configuration, when performing maintenance, inspection, or maintenance work on the engine in the engine compartment, open the upper side door and the lower side door to enlarge the opening of the side cover, and The lower side door is held in a horizontal state by the provided horizontal holding member, and the lower side door is used as a scaffold plate.

[0014]

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. In addition, the same components as those of the above-described conventional technique are designated by the same reference numerals, and the description thereof will be omitted.

First, FIGS. 1 to 3 show a first embodiment of the present invention.

Reference numeral 21 denotes an engine compartment applied to this embodiment in place of the engine compartment 4 according to the prior art. The engine compartment 21 also has left and right side covers 21A and 21A which are substantially vertical flat surfaces. A roof cover 21B serving as a ceiling and a rear cover 21C closing a rear end thereof are formed into a box shape. However, the engine compartment 21 according to the present embodiment is different in that each side cover 21A is provided with an upper side door 22 and a lower side door 25 which will be described later.

Reference numerals 22 and 22 denote upper side doors applied to the present embodiment in place of the side door 9 according to the prior art. The upper side doors 22 are located above the left and right side covers 21A and 21A. Further, the side covers 21A are attached so as to be openable and closable in the front and rear directions via hinges 23, 23 that can be opened and closed by 180 degrees or more, and form a part of each side cover 21A. The hinges 23 are attached to the front positions of the left and right side covers 21A, 21A.

Reference numeral 24 denotes a lock mechanism for fixing the upper side doors 22 in a closed state. The lock mechanism 24 is provided on the side opposite to the hinges 23 and is locked to the rear cover 21C side (see FIG. 3).

Reference numerals 25 and 25 denote lower side doors which are located below the upper side doors 22 and are provided on the left and right side covers 21A and 21A so as to be opened and closed in the upper and lower directions. The side doors 25 are provided at the lower positions of the left and right side covers 21A, and are attached to the respective side covers 21A via hinges 26, 26 that can be opened and closed by about 90 degrees. Each of the lower side doors 25 constitutes a part of each of the side covers 21A together with each of the above-described upper side doors 22 and functions as a scaffolding plate as will be described later in the opened state. Is. Each of the lower side doors 25 is a relatively narrow plate-shaped member so as not to interfere with the rear tire 6.

Reference numerals 27 and 27 denote stopper plates as horizontal holding members that are provided at the front and rear ends of the lower side doors 25 and are foldable (openable / closable). As shown in FIG. 2, it is formed as a substantially triangular or trapezoidal plate body. The stopper plates 27 are rotatably attached to the front and rear ends of the lower side door 25 via hinges 28 that can be opened and closed by 270 degrees.

Here, in a state in which the lower side door 25 is opened and the stopper plates 27 are folded downward, the stopper surface 27A adjacent to the side cover 21A abuts the side cover 21A, and the lower side door 21A The door 25 is held horizontally (see FIG. 2). Further, when the lower side door 25 is closed, the stopper plates 27 are folded to be stored in the engine compartment 21 together with the lower side door 25.

Further, 29 is a storage stopper provided on the front end side of each of the lower side doors 25, and when the lower side door 25 is closed together with the upper side door 22, the storage stopper 29 causes the lower side door 25 to be closed. The side door 25 is positioned on the upper side door 22 so as to prevent the side door 25 from freely opening due to vibration or the like.

Although this embodiment is configured as described above, when the upper side door 22 and the lower side door 25 are closed, the upper side door 22 and the lower side door 25 are indicated by the dotted lines in FIG. In the state or in the state of FIG. 3, the upper side door 22 is locked to the rear cover 21C side by the lock mechanism 24, and the lower side door 25 is positioned on the upper side door 22 by the storage stopper 29. As a result, both the upper side door 22 and the lower side door 25 are used as a part of the side cover 21A forming the engine compartment 21.

On the other hand, when performing work such as maintenance, inspection, and maintenance of the engine 3, the lock mechanism 24 is removed, the upper side door 22 is opened using the hinge 23 as a fulcrum, and then the hinge 26 is used as a fulcrum. Open the side door 25. Then, each stopper plate 27 is folded back and its stopper surface 27A is brought into contact with the side cover 21A to hold the lower side door 25 in a horizontal state.

Thus, when the upper side door 22 and the lower side door 25 are opened, the state shown in FIG. 1 or 2 is reached, and the opening portion of the side cover 21A can be greatly opened, so that the operator can operate in the engine compartment 21. Can be easily performed.

Moreover, since the lower side door 25 is held horizontally, the lower side door 25 can be used as a scaffold plate. As a result, even when the engine compartment 21 is at a high position like a large wheel loader, there is no need to use the rear wheel tires 6 as scaffolding as in the prior art, and maintenance, inspection, It is possible to ensure safety when performing maintenance work.

Next, FIG. 4 shows a second embodiment of the present invention. The same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

However, the feature of this embodiment is that when the lower side door 25 is opened, the pair of stoppers according to the first embodiment is used as a horizontal holding member for holding the lower side door 25 in a horizontal state. Instead of the plate 27, two chains 31 are used.

That is, the lower side door 25 applied to this embodiment does not include the stopper plate 27 rotatably provided via the hinge 28 as in the first embodiment, and does not include a pair of chains. The cord 31 is used. One end of the chain 31 is fixed to the side cover 21A, and the other end is fixed to the tip side of the lower side door 25.

Although the present embodiment is configured in this way, the operation and effects are the same as those of the first embodiment.

In each of the embodiments, the wheel loader is exemplified as the wheel loader in which the rear vehicle body 1 and the front vehicle body 10 are separate bodies and are connected to each other via the connecting brackets. The present invention is not limited to such a wheel loader, but may be applied to a wheel type working machine in which an upper rotating body is rotatably provided on a lower traveling body, such as a wheel type hydraulic excavator or a hydraulic crane. It can also be applied to wheel type working machines such as bulldozers and agricultural tractors.

In each of the embodiments, the case where the upper side door 22 and the lower side door 25 are provided on the left and right sides of the engine room 21 is illustrated, but the upper side door 22 and the lower side door 25 are side covers. It is sufficient that it is provided on at least one side of 21A.

Further, as the horizontal holding member of the lower side door 25, the stopper plate 27 is applied in the first embodiment and the chain 31 is applied in the second embodiment, but the present invention is applicable to these. The present invention is not limited to this, and another horizontal holding member such as a link mechanism may be used.

[0034]

[Effect of the device]

 The wheel type working machine according to the present invention is as described above in detail. Among the left and right side covers forming the engine compartment, at least one side cover is an upper side that can be opened in the front and rear directions. A door and a lower side door located below the upper side door and capable of opening and closing in the upper and lower directions, and the lower side door is in a horizontal state when the lower side door is opened. Since a horizontal holding member is provided to hold the side cover, the upper side door and the lower side door can greatly open the side cover when performing engine maintenance, inspection, maintenance, etc. Can be used as a scaffolding plate, and various work can be done easily on the engine and its surroundings, and safety during work can be secured, especially effective for large models. And .

[Brief description of drawings]

FIG. 1 is an external perspective view showing a wheel loader according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of the main part of the wheel loader shown in FIG. 1 as seen from the rear surface side and partially broken.

FIG. 3 is a side view as seen from the direction of arrows III-III in FIG.

FIG. 4 is an enlarged view of a part of the wheel loader according to the second embodiment of the present invention, the same as FIG.

FIG. 5 is an external perspective view showing a wheel loader according to a conventional technique.

FIG. 6 is an enlarged view of the main part of the wheel loader shown in FIG. 5 as seen from the rear side.

[Explanation of symbols]

 1 Rear Car Body (Car Body) 2 Driver's Cab 6 Rear Wheel Tire 10 Front Car Body (Car Body) 13 Loader Bucket (Working Device) 16 Front Wheel Tire 21 Engine Room 21A Side Cover 21B Roof Cover 21C Rear Cover 22 Upper Side Door 25 Lower Side Door 27 Stopper plate (horizontal holding member) 31 Chain (horizontal holding member)

Claims (1)

[Scope of utility model registration request] 1. A vehicle body having an operator's cab and an engine compartment located in a rear portion of the operator's cab for accommodating an engine, front and rear tires for movably supporting the vehicle body, and the vehicle body provided on the vehicle body. In a wheel type working machine comprising a working device and the engine compartment formed by left and right side covers, a roof cover and a rear cover, at least one side cover of the left and right side covers is
An upper side door that can be opened and closed in the front and rear directions, and a lower side door that is located below the upper side door and that can be opened and closed in the upper and lower directions, and the lower side door is the lower side door. A wheel type working machine comprising a horizontal holding member for holding the door in a horizontal state when the door is opened.