JP2003112579A - Construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect an antenna used as a GPS antenna or a mobile communication antenna and to improve reliability and durability thereof. SOLUTION: A support member 20 for supporting a canopy 22 is provided at a revolving frame 3 located on the rear of a driver's seat 10. The periphery of the support member 20 is covered by an exterior cover 24 made of a resin material, and an antenna 23 is mounted to its rear leg body 20C. By this, the antenna 23 can be arranged in a space divided by the exterior cover 24, and this antenna 23 can be covered by the exterior cover 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine such as a hydraulic excavator, and more particularly to a GPS (Global Positio).
(Ning System) The present invention relates to a construction machine equipped with a communication device that performs wireless communication with the outside such as a satellite and a base station.

[0002]

2. Description of the Related Art In recent years, there has been known a device equipped with a communication device for capturing the position of a vehicle body by using a signal from a GPS satellite to a construction machine in order to grasp the operating condition, prevent theft, etc. For example, Japanese Patent Laid-Open No. 2000-73411).
On the other hand, in this type of construction machine, there is also known one having a communication device for mutually transmitting various kinds of information to and from an external base station via a communication satellite or the like (for example, Japanese Patent Laid-Open No. 2000-
76505, etc.).

A hydraulic excavator according to such a conventional technique is capable of self-propelled, a driver's seat provided on the vehicle body, and a communication device provided on the vehicle body for performing wireless communication with the outside. And an antenna connected to the communication device.

[0004]

By the way, in the above-mentioned conventional hydraulic excavator, since the antenna is mounted on the outer surface of the vehicle body, the falling object may come into contact with the antenna during excavation work or the like. There is a problem that it is easily damaged. In addition, there is a problem that the antenna tends to be deteriorated by wind and rain, and that it is easily subject to artificial mischief.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a construction machine capable of protecting an antenna and enhancing reliability and durability. is there.

[0006]

The invention according to claim 1 is
A self-propelled vehicle body using an engine as a power source, a driver's seat provided on the vehicle body, a communication device provided on the vehicle body for wireless communication with the outside, and an antenna connected to the communication device. The construction machine provided is characterized in that the antenna is attached to the vehicle body while being covered with a resin cover.

With this configuration, since the antenna is covered with the resin cover, the antenna can be protected without impairing the communication performance (signal transmission / reception performance) of the antenna.

According to the second aspect of the invention, the antenna is mounted in the space defined by the outer cover, and the resin cover is constituted by the outer cover.

Thus, the antenna can be housed in the space defined by the outer cover, and the antenna can be covered with the outer cover made of the resin material.

According to the third aspect of the present invention, the vehicle body is provided with a hydraulic oil tank, the antenna is attached to the hydraulic oil tank, and the resin cover is a tank cover for covering the hydraulic oil tank.

As a result, the antenna is attached to the hydraulic oil tank, and the antenna is covered by the tank cover that covers the hydraulic oil tank. Therefore, the antenna can be protected without separately providing a resin cover.

In the invention of claim 4, the vehicle body has a canopy that is supported by a support member and covers the driver's seat from above, the antenna is attached to the support member, and the resin cover is an exterior cover that covers the support member. ing.

Thus, the antenna is attached to the support member, and the antenna is covered by the exterior cover that covers the support member. Therefore, the antenna can be protected without separately providing a resin cover.

According to a fifth aspect of the present invention, there is provided a self-propelled vehicle body, a driver's seat provided on the vehicle body, and a canopy having a canopy roof made of a resin material which is supported by the vehicle body and covers an upper portion of the driver's seat. In a construction machine comprising a communication device provided on the vehicle body for wireless communication with the outside, and an antenna connected to the communication device, the antenna is provided on a lower surface side of the canopy roof or inside the canopy roof. It is characterized by being installed.

With this, the antenna can be arranged at a higher place than the driver's seat, so that the aerial field of view of the antenna can be ensured, and signals can be easily transmitted and received with, for example, communication satellites, GPS satellites and the like. You can Further, since the antenna is arranged in the vicinity of the lower side of the resin canopy roof or inside the canopy roof, the antenna can be protected against falling objects and the like without impairing communication performance.

According to a sixth aspect of the present invention, there is provided communication for performing wireless communication between a self-propelled vehicle body, a cab provided in the vehicle body and having a driver's seat inside and made of a metal material, and the outside provided in the vehicle body. A construction machine comprising a device and an antenna connected to the communication device is characterized in that the antenna is attached to an upper surface side of the cab while being covered with a resin cover.

Since the antenna is arranged on the upper surface side of the cab, it is possible to secure an aerial field of view of the antenna, and it is possible to easily transmit and receive signals to and from communication satellites, GPS satellites, and the like. Moreover, since the antenna is covered with the resin cover, the antenna can be protected without impairing the communication performance.

According to the invention of claim 7, the antenna is a GPS.
The communication device comprises a GPS antenna for receiving a signal from a satellite, and the communication device receives a GP from the GPS antenna.
It is configured to capture the position of the vehicle body using the signal from the S satellite.

Thus, the GPS antenna can receive the signal from the GPS satellite through the resin cover, and the communication device can calculate the current position of the vehicle body using the signal from the GPS satellite.

According to the invention of claim 8, the antenna comprises a mobile communication antenna for transmitting and receiving radio signals to and from the outside, and the communication device transmits and receives radio signals from the mobile communication antenna. It is configured to transmit information to and from the outside by using.

As a result, the mobile communication antenna can transmit and receive radio signals to and from the outside such as a communication satellite and a base station via the resin cover. For this reason,
It is possible to transmit various information such as the current position of the vehicle body, the operating condition, the remaining amount of fuel, etc. from the vehicle body to the outside, and also to transmit information such as an instruction to stop the engine from the outside to the vehicle body. be able to.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION A hydraulic excavator equipped with a GPS antenna or a mobile communication antenna will be described as an example of a construction machine according to an embodiment of the present invention in detail with reference to the accompanying drawings. In the present embodiment, "front, rear"
The terms "left and right" are used to mean the direction or position as seen by the operator sitting in the driver's seat.

First, FIGS. 1 to 5 show a first embodiment. Further, 1 is an undercarriage, 2 is an upper revolving structure which is mounted on the undercarriage 1 so as to be capable of turning, and which constitutes a vehicle body together with the undercarriage 1, and the upper revolving structure 2 is a revolving frame described later. 3, driver's seat 10, counterweight 1
2, the engine 13, the support member 20, the canopy 22, and the like.

Reference numeral 3 denotes a revolving frame which forms the base of the upper revolving superstructure 2. The revolving frame 3 is, as shown in FIG.
A bottom plate 4 whose rear side is formed in an arc shape by a flat plate material, and a pair of left and right vertical plates 5 and 5 standing upright from the bottom plate 4 and extending in the front and rear directions, and each of the vertical plates. An upper plate 6 provided on the upper end side of the vertical plate 5 so as to cover the front side of the plate 5 from the upper side, and an upright standing from the bottom plate 4 and extending in the left and right directions across each vertical plate 5. The horizontal plate 7 and the horizontal plate 7 are generally configured. On the front side of the revolving frame 3, a support bracket 3 that supports the work device 8 swingably in the left and right directions.
A is provided. Further, a bracket 7A for supporting a front leg 20D of a support member 20 described later is attached to the lateral plate 7.

Reference numeral 9 is a floor board provided to cover the upper side of the revolving frame 3, and 10 is a driver's seat provided on the floor board 9,
Around the driver's seat 10, there are disposed a lower traveling body 1, operation levers 11A and 11B for operating the working device 8, and the like.

Reference numeral 12 is a counterweight attached to the rear part of the revolving frame 3, and the outer periphery of the counterweight 12 is formed along an arc of a revolving radius as shown in FIGS. The counterweight 12 is balanced with the work device 8.

Reference numeral 13 denotes an engine mounted on the revolving frame 3 at the front side of the counterweight 12, and the engine 13 is mounted in a horizontally installed state extending in the left and right directions as shown in FIG. ing. In addition, the engine 13 has
A hydraulic pump 14 or the like that discharges pressure oil when driven by the engine 13 is attached to the engine 13.
On the opposite side of the hydraulic pump 14 across the radiator 1
5, an oil cooler 16 is provided.

Reference numeral 17 denotes a turning device mounted on the bottom plate 4 of the turning frame 3 and including a hydraulic motor, a speed reducer, a pinion gear, and the like, and 18 denotes a multiple control valve mounted on the right front portion of the turning frame 3 and including a plurality of control valves. A valve device, the multiple valve device 18
A hydraulic oil tank 19, which will be described later, is arranged on the rear side.

19 is a radiator 15 and an oil cooler 16
Of the hydraulic oil tank mounted on the bottom plate 4 of the revolving frame 3 and located between the hydraulic oil tank 19 and the multiple valve device 18.
Stores hydraulic oil supplied to the working device 8, the turning device 17, and the like, and is connected to the hydraulic pump 14, the oil cooler 16, the multiple valve device 18, and the like.

Reference numeral 20 is a support member attached to the rear side of the revolving frame 3, and the support member 20 is located above the engine 13 and extends in the left and right directions as shown in FIG. A left leg 20B extending from the left end of the mounting plate 20A to the left side of the engine 13, and the mounting plate 20.
Rear leg 20 extending from the right end of A to the rear side of the engine 13
C and a front leg 20D extending from the mounting plate 20A to the front side of the engine 13 in general.

The support member 20 is the mounting plate 20.
A post 22A of a canopy 22, which will be described later, is attached to A,
The rear leg 20C and the left leg 20B are attached to the bottom plate 4,
The front leg 20D is attached to a bracket 7A provided on the revolving frame 3. Thereby, the support member 2
0 is fixed across the engine 13 and supports a canopy 22 described later.

The front leg 20D is in the form of a bent plate, and separates the driver's seat 10 and the engine 13 together with an engine front cover 25 described later. In addition, rear leg 2
0C extends in the height direction from the mounting plate 20A toward the bottom plate 4, and at a midway position thereof, projects toward the rear end side of the revolving frame 3 to mount a pedestal portion 21 for fixing a GPS antenna 23 described later. Is provided.

Reference numeral 22 denotes a canopy as a roof member provided so as to cover the upper side of the driver's seat 10.
Is roughly constituted by a pillar 22A and a canopy roof 22B forming a roof mounted on the upper side of the pillar 22A, and the lower end side of the pillar 22A is attached to a mounting plate 20A of the support member 20.

Reference numeral 23 denotes an antenna used as a GPS antenna or a mobile communication antenna (hereinafter referred to as antenna 2
A case where 3 is used for the GPS antenna 23 will be described. ), The GPS antenna 23 has a substantially rectangular plate shape attached to the support member 20. Where G
The PS antenna 23 is a rear leg 20C of the support member 20.
It is fixed to a pedestal portion 21 provided in the space A and is mounted in the space A in the vicinity of an engine cover 28 described later. Further, the GPS antenna 23 is connected to a communication device (not shown) arranged near the driver's seat 10 or the like, receives a signal (electromagnetic wave) from a GPS satellite via the engine cover 28, and receives the signal. Are typing in.

An outer cover 24 is located around the driver's seat 10 and covers the upper side of the revolving frame 3.
Is an engine front cover 25 that is located between the driver's seat 10 and the engine 13 and covers the front leg 20D of the support member 20.
And a left side cover 26 which covers the left side of the driver's seat 10, and a right side cover 2 which is located on the right side of the driver's seat 10 and covers the multiple valve device 18, the hydraulic oil tank 19 and the like.
7, an engine cover 28 as a bonnet which is located above the counterweight 12 and covers the rear side of the engine 13 so as to be openable and closable, and a right side cover 27 and an engine cover 28 at positions facing the radiator 15 and the oil cooler 16.
It is constituted by a radiator front cover 29 and the like provided between and.

The outer cover 24 is made of a resin material that allows electromagnetic waves to pass therethrough, defines a space A for accommodating the engine 13 and the like, and covers the periphery of the GPS antenna 23. Further, the engine front cover 25 isolates the driver's seat 10 and the engine 13 from each other, and
It blocks hot air and noise from.

The hydraulic excavator according to the present embodiment has the above-mentioned structure, and its operation will be described below.

First, the operator sits in the driver's seat 10,
The lower traveling body 1 is caused to travel by operating the traveling operation lever 11A. In addition, the operation lever 11 for work
When B is operated, the working device 8 is raised or lowered,
The upper revolving structure 2 can be swung to perform earth and sand excavation work or the like.

At this time, since the GPS antenna 23 and the communication device are attached to the upper swing body 2, the GPS antenna 23 receives the signal from the GPS satellite via the exterior cover 24 made of a resin material, Input the signal to the communication device. Thereby, the communication device calculates the current position of the hydraulic excavator and transmits the position information and the like to the control center and the like. As a result, the control center can grasp the current position, operating status, etc. of the hydraulic excavator.

However, in the present embodiment, the GPS antenna 23 is attached to the upper revolving structure 2 and is covered with the outer cover 24 made of a resin material, so that the communication performance (signal reception performance) of the GPS antenna 23 is not impaired. The GPS antenna 23 can be protected against falling objects and wind and rain. For this reason, the durability and reliability of the GPS antenna 23 can be improved, and artificial mischief can be prevented.

The GPS antenna 23 is attached to the exterior cover 2
Since it is mounted in the space A defined by 4, the external cover 2 does not require a separate member for protecting the GPS antenna 23.
4, the GPS antenna 23 can be protected. Further, since the GPS antenna 23 is housed in the space A, the wiring connecting the GPS antenna 23 to the communication device provided near the driver's seat 10 can be arranged in the space A, and the space for wiring can be provided. These can be easily connected without the need to secure them separately.

Next, FIG. 6 shows a second embodiment of the present invention, which is characterized in that an antenna is attached to the hydraulic oil tank. In addition, in the present embodiment, the same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

Reference numeral 31 denotes a GPS antenna mounted on the upper surface side of the hydraulic oil tank 19 or an antenna used as a mobile communication antenna (hereinafter, the case where the antenna 31 is applied to the GPS antenna 31 will be described). Is connected to a communication device arranged in the vicinity of the driver's seat 10 or the like through a wiring (not shown) mounted in the exterior cover 24 as in the GPS antenna 23 according to the first embodiment. The GPS antenna 31 is surrounded by a right side cover 27 made of a resin material.

Thus, in this embodiment as well, it is possible to obtain substantially the same operational effects as those of the first embodiment. However, according to the present embodiment, since the GPS antenna 31 is attached to the upper surface side of the hydraulic oil tank 19 which is arranged so as to project to the right side of the driver's seat 10, the upper side of the GPS antenna 31 is provided with the canopy 22 made of a metal material. It will not be blocked by the columns 22A. Therefore, the sky field of view of the GPS antenna 31 can be secured, and the signal from the GPS satellite can be easily received.

Next, FIGS. 7 and 8 show a third embodiment of the present invention. The feature of this embodiment is that the antenna is attached to a support member for supporting the canopy and an exterior cover for covering the support member is provided. Is to cover the antenna with. In addition, in the present embodiment, the same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

41 is a G attached to the support member 20.
An antenna used as a PS antenna or a mobile communication antenna (hereinafter, the case where the antenna 41 is applied to the GPS antenna 41 will be described), and the GPS antenna 4 is used.
For example, 1 is located on the left end side of the mounting plate 20A of the support member 20 and is fixed to the uppermost side of the left leg 20B. Then, the GPS antenna 41 is connected to a communication device arranged in the vicinity of the driver's seat 10 or the like through a wiring (not shown) mounted in the exterior cover 24, similarly to the GPS antenna 23 according to the first embodiment. There is.

The GPS antenna 41 is covered by an engine front cover 25 'of the exterior cover 24.
Here, the engine front cover 25 'according to the present embodiment
Is formed in a plate shape that is bent along the front leg 20D of the support member 20 almost similarly to the engine front cover 25 according to the first embodiment, and the tip thereof is the mounting plate 20A.
Extends to the upper side of. And the engine front cover 2
5'covers the front side of the front leg 20D, and its upper side covers the attachment plate 20A and the uppermost side of the left leg 20B.

The engine front cover 25 'is made of a resin material that allows electromagnetic waves to pass therethrough, and a substantially box-shaped accommodating portion 25A' is provided on the upper side thereof.
Then, the engine front cover 25 ′ includes the support member 20.
To the GP in the accommodation section 25A 'by being attached to
It accommodates the S antenna 41.

Thus, in this embodiment as well, it is possible to obtain substantially the same operational effects as in the first embodiment.

Next, FIGS. 9 to 11 show a fourth embodiment of the present invention, and the feature of this embodiment is that the antenna is attached to the lower surface side of the canopy roof. In addition,
In the present embodiment, the same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

Reference numeral 51 denotes an antenna according to the present embodiment used as a GPS antenna or a mobile communication antenna (hereinafter, the case where the antenna 51 is applied to the GPS antenna 51 will be described). The GPS antenna 51 is provided on the canopy roof 22B. It is attached to a pedestal portion 52 provided on the column 22A in close proximity. Here, the pedestal portion 52 has a substantially flat plate shape, and is fixed to one of the two arm portions 22A1 of the support column 22A of the canopy 22 which are screwed to the canopy roof 22B. The GPS antenna 51 is located between the pedestal portion 52 and the canopy roof 22B and is fixed to the pedestal portion 52.
It is arranged on the lower surface side of B.

Thus, in this embodiment having such a configuration, it is possible to obtain substantially the same operational effects as those of the first embodiment. Further, since the GPS antenna 51 is mounted close to the lower side of the canopy roof 22B, the GPS antenna 51 can be arranged at a higher position than the driver's seat 10, and the GPS antenna 51 can be provided with a sky view to receive signals from GPS satellites. Can be easily received.

Next, FIGS. 12 and 13 show the fifth embodiment of the present invention.
The above embodiment is shown, and the feature of this embodiment is that the antenna is mounted inside the canopy roof. In addition,
In the present embodiment, the same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

Reference numeral 61 denotes an antenna according to this embodiment used as a GPS antenna or a mobile communication antenna (hereinafter, the case where the antenna 61 is applied to the GPS antenna 61 will be described). The GPS antenna 61 has a hollow shape. It is arranged inside the formed canopy roof 22B. Then, the GPS antenna 61 has a base plate 62.
It is housed in the canopy roof 22B in a state of being attached to the canopy roof 22B, and is fixed by attaching the base plate 62 to the lower surface side of the canopy roof 22B.

Thus, in this embodiment having such a configuration, it is possible to obtain substantially the same operational effects as those of the first embodiment. In addition, the GPS antenna 61 is installed in the driver's seat 10
Since it is mounted inside the canopy roof 22B that covers the sky above, it is possible to secure the sky view of the GPS antenna 61.
The signal from the satellite can be easily received.

Next, FIGS. 14 to 17 show a sixth embodiment of the present invention.
The present embodiment is characterized by the fact that the antenna is attached to the upper side of the cab while being covered with a resin cover. In addition, in the present embodiment, the same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

Reference numeral 71 is a cab made of a metal material provided on the revolving frame 3. The cab 71 has a front surface portion 71A,
The rear surface portion 71B, the left and right side surface portions 71C and 71D, and the ceiling portion 71E are formed into a substantially box shape, and a door 71F is attached to the left side surface portion 71C so as to be openable and closable. The cab 71 includes the driver's seat 10 and the operation lever 1.
1A, 11B etc. are covered.

Reference numeral 72 denotes an antenna according to this embodiment used as a GPS antenna or a mobile communication antenna (hereinafter, the case where the antenna 72 is applied to the GPS antenna 72 will be described). The GPS antenna 72 is above the cab 71. And is attached to the upper surface side of the ceiling portion 71E. Further, on the outer surface side of the GPS antenna 72,
A substantially box-shaped resin cover 73 is fixed by bolts 74 and the like, and the resin cover 73 covers the entire GPS antenna 72.

Thus, in this embodiment having such a configuration, it is possible to obtain substantially the same operational effects as those of the first embodiment. Further, since the GPS antenna 72 is attached to the upper side of the cab 71 made of a metal material, the sky field of view of the GPS antenna 72 can be secured while securing the strength of the cab 71. Furthermore, since the GPS antenna 72 is covered with the resin cover 73, the GPS antenna 72 can be protected and durability and reliability can be improved.

In each of the above embodiments, the GPS is used as the antenna (23, 31, 41, 51, 61, 72).
A GPS antenna for receiving a signal from the satellite is used, and the communication device is configured to capture the position of the vehicle body using the signal from the GPS satellite received from the GPS antenna.

However, the present invention is not limited to this, and a mobile communication antenna for transmitting / receiving a radio signal to / from the outside such as a communication satellite or a base station is used as an antenna,
The communication device may be configured to mutually communicate information with the outside by using a radio signal transmitted and received from the mobile communication antenna.

In this case, the mobile communication antenna can transmit and receive radio signals to and from, for example, communication satellites, base stations, etc. through the resin cover. Therefore, it is possible to transmit various information such as the current position of the vehicle body, the operating condition, the remaining fuel amount, etc. from the vehicle body to the external control center, etc., and also to instruct the vehicle body from the outside to stop the engine, for example. It is possible to control the stoppage of the vehicle body by transmitting information such as "prevention", and prevent the construction machine from being stolen.

Further, a mobile communication antenna may be attached to the vehicle body in addition to the GPS antenna, and the communication device may be connected to both the GPS antenna and the mobile communication antenna.

In the fourth embodiment, the antenna 51 is attached to the arm portion 22A1 of the pillar 22A which is screwed to the canopy roof 22B. Of these, the structure may be mounted near the upper end extending in the vertical direction, or may be mounted directly on the lower surface of the canopy roof.

Further, in the first to fifth embodiments, the two-pillar type canopy 22 in which the canopy roof 22B is supported by the two columns 22A is exemplified, but the present invention is not limited to this, and for example, three columns can be used. Alternatively, a three-column canopy, a four-column canopy, or the like that supports the canopy roof with four or more columns may be used.

Further, in each of the embodiments, the tracked hydraulic excavator was described as an example of the construction machine, but the present invention is not limited to this, and for example, a wheel type hydraulic excavator,
It can also be applied to other construction machines such as hydraulic cranes.

[0067]

As described above in detail, according to the invention of claim 1, since the antenna is provided on the vehicle body and covered with the resin cover, the antenna can be protected from falling objects, wind and rain without impairing the communication performance of the antenna. Can be protected. Therefore, it is possible to improve the durability and reliability of the antenna and prevent artificial mischief.

According to the invention of claim 2, since the antenna is mounted in the space defined by the outer cover and the resin cover is constituted by the outer cover, the outer cover made of the resin material does not have to be provided with a separate resin cover. The cover can be used to protect the antenna.

In this case, as in the invention of claim 3, the antenna may be attached to the hydraulic oil tank, and the resin cover may be a tank cover for covering the hydraulic oil tank.

Further, as in the invention of claim 4, the antenna may be attached to the support member for supporting the canopy, and the resin cover may be constituted by an exterior cover for covering the support member.

According to the fifth aspect of the invention, since the antenna is mounted on the lower surface side of the canopy roof or inside the canopy roof, the antenna can be arranged at a higher position than the driver's seat and the aerial view of the antenna can be secured. For example, it is possible to easily transmit and receive signals to / from the outside such as a communication satellite and a GPS satellite. Further, since the antenna is arranged on the lower surface side of the canopy roof made of the resin material or inside the canopy roof, the antenna can be protected by the canopy roof without impairing communication performance.

According to the sixth aspect of the invention, since the antenna is mounted on the upper surface of the cab while being covered with the resin cover, it is possible to secure an aerial view of the antenna, and for example, a signal is transmitted between a communication satellite and a GPS satellite. Can be easily sent and received. Moreover, since the antenna is covered with the resin cover, the antenna can be protected without impairing the communication performance.

According to the invention of claim 7, the antenna is a GP.
Since it is composed of the GPS antenna for receiving the signal from the S satellite, the GPS antenna can receive the signal from the GPS satellite through the resin cover, and the communication device uses the signal from the GPS satellite to detect the vehicle body. The current position of can be calculated.

According to the invention of claim 8, since the antenna is constituted by a mobile communication antenna for transmitting and receiving radio signals to and from the outside, the mobile communication antenna communicates, for example, through a resin cover. Radio signals can be transmitted to and received from the outside such as satellites and base stations. Therefore, from the vehicle body to the outside, the current position of the vehicle body, the operating status,
Various information such as the remaining amount of fuel can be transmitted, and information such as an instruction to stop the engine is transmitted from the outside to the vehicle body, and further the vehicle body stop is controlled to prevent theft or the like. be able to.

[Brief description of drawings]

FIG. 1 is a front view showing a hydraulic excavator applied to a first embodiment.

FIG. 2 is a right side view of the hydraulic excavator as seen from the right side in FIG.

FIG. 3 is a plan view showing the hydraulic excavator in FIG. 1 with a working device omitted.

FIG. 4 is a plan view showing a revolving frame with an engine, a multiple valve device, a hydraulic oil tank and the like attached thereto.

FIG. 5 is an enlarged front view showing a state in which an engine, a support member, a canopy, a GPS antenna and the like are attached to a swing frame.

FIG. 6 is a rear view showing the hydraulic excavator according to the second embodiment with a working device omitted.

FIG. 7 is a front view showing a hydraulic excavator according to a third embodiment without a working device.

FIG. 8 is an exploded front view showing a state in which the GPS antenna according to the third embodiment is attached to a support member and is covered with an engine front cover.

FIG. 9 is a rear view showing the hydraulic excavator according to the fourth embodiment in a state in which a working device is omitted.

10 is a plan view of the canopy as seen in the direction of arrow XX in FIG.

FIG. 11 shows a GPS antenna, a canopy roof, etc.
It is an expanded sectional view seen from the arrow XI-XI direction in the inside.

FIG. 12 is a view showing a canopy according to a fifth embodiment.
It is the top view seen from the same position as 0.

FIG. 13 shows a GPS antenna, a canopy roof, etc.
It is an expanded sectional view seen from the arrow XIII-XIII direction in the inside.

FIG. 14 is a front view showing a hydraulic excavator according to a sixth embodiment with a working device omitted.

FIG. 15 is a plan view of the cab seen from the direction of arrows XV-XV in FIG.

16 is an enlarged plan view showing a GPS antenna, a resin cover and the like in FIG. 15 in an enlarged manner.

FIG. 17 is a cross-sectional view of the GPS antenna, the resin cover, and the like as viewed in the direction of arrow XVII-XVII in FIG.

[Explanation of symbols]

1 Undercarriage 2 Upper revolving structure 8 working devices 10 driver's seat 19 Hydraulic oil tank 20 Support member 22 canopy 22B canopy roof 23, 31, 41, 51, 61, 72 Antenna 24 Exterior cover 25,25 'engine front cover 26 Left side cover 27 Right side cover (tank cover) 28 Engine cover 29 Radiator front cover 71 cab 73 Resin cover

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takeshi Yamaguchi             1-2, Sasagaoka, Mizuguchi Town, Koga District, Shiga Prefecture             Hitachi Construction Machinery Tierra Shiga Factory (72) Inventor Takatomi Miyakubo             1-2, Sasagaoka, Mizuguchi Town, Koga District, Shiga Prefecture             Hitachi Construction Machinery Tierra Shiga Factory (72) Inventor Tatsuo Takishita             1-2, Sasagaoka, Mizuguchi Town, Koga District, Shiga Prefecture             Hitachi Construction Machinery Tierra Shiga Factory F term (reference) 2D003 AA01 AA06 AB06 BA04 BA06                       CA02 DA04                 2D015 CA01 EA02 GB04                 3D020 BA13 BB07 BC04 BC07 BD03                       BD05

Claims (8)

[Claims] 1. A vehicle body capable of self-propelled using an engine as a power source, a driver's seat provided in the vehicle body, a communication device provided in the vehicle body for performing wireless communication with the outside, and connected to the communication device. In a construction machine equipped with
The construction machine, wherein the antenna is attached to the vehicle body while being covered with a resin cover. 2. The construction machine according to claim 1, wherein the antenna is mounted in a space defined by an outer cover, and the resin cover is constituted by the outer cover. 3. The construction according to claim 1, wherein the vehicle body is provided with a hydraulic oil tank, the antenna is attached to the hydraulic oil tank, and the resin cover is a tank cover that covers the hydraulic oil tank. machine. 4. The vehicle body has a canopy that is supported by a support member and covers the driver's seat from above, the antenna is attached to the support member, and the resin cover is an exterior cover that covers the support member. The construction machine according to claim 1, wherein 5. A self-propelled vehicle body, a driver's seat provided on the vehicle body, a canopy having a canopy roof made of a resin material which is supported by the vehicle body and covers an upper portion of the driver's seat, and a vehicle body provided on the vehicle body. In a construction machine comprising a communication device for performing wireless communication with the outside and an antenna connected to the communication device, the antenna is attached to a lower surface side of the canopy roof or inside the canopy roof. And construction machinery. 6. A self-propelled vehicle body, a cab provided in the vehicle body and made of a metal material having a driver's seat inside, and a communication device provided in the vehicle body and performing wireless communication with the outside.
A construction machine comprising an antenna connected to the communication device, wherein the antenna is attached to an upper surface side of the cab while being covered with a resin cover. 7. The antenna is a GPS antenna for receiving a signal from a GPS satellite, and the communication device is configured to capture the position of the vehicle body using the signal from the GPS satellite received from the GPS antenna. The construction machine according to claim 1, 2, 3, 4, 5 or 6. 8. The antenna comprises a mobile communication antenna for transmitting and receiving radio signals to and from the outside, and the communication device uses the radio signals transmitted and received from the mobile communication antenna to communicate with the outside. The construction machine according to claim 1, 2, 3, 4, 5 or 6, which is configured to transmit information to each other.