JP2008102098A - Antenna enclosure of operation machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To safely store an operation machine, without having to detach a GPS antenna regarding the antenna enclosure of the operation machine. <P>SOLUTION: The antenna enclosure of the operation machine comprises: a casing 21 provided with an opening 21a; a first hinge structure 32 turnably arranged near the opening 21a; a support member 22 on which the GPS antenna 10 is supported; an actuator 23 for making the support member 22 turn; a second hinge structure 35 fixed to the periphery of the opening 21a; a cover 24 for opening/closing the opening 21a; a bracket 25 fixedly provided on the support member 22; and a linking member 26 for connecting the bracket 25 and the cover 24 by pins 36 and 37 so that the direction of the turning shaft of the first hinge structure 32, the second hinge structure 35 and the pins 36 and 37 are arranged parallel to each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an antenna storage device for a work machine equipped with a GPS antenna.

  In recent years, in work machines, as a position measurement system for construction management, for example, as described in Patent Document 1, a GPS antenna that can receive a positioning signal from an artificial satellite on a counterweight of an upper swing body (airframe) Has been carried out. In other words, the tip position (bucket tip position) of the working device is calculated based on the position data obtained by the GPS antenna and the angle data obtained by the position sensor installed on each movable part (boom, arm and bucket) of the working device. Then, the construction status is grasped by comparing the calculated tip position of the working device with preset terrain data or target terrain data.

Since the GPS antenna is highly accurate and expensive, it may be stolen. Therefore, after work, the GPS antenna is removed from the work machine and stored.
JP 2002-310652 A

  However, it is burdensome for the operator to lift and lower the aircraft with the GPS antenna every time work is started / finished, and the expensive GPS antenna may be dropped and damaged. In addition, if a new scaffolding or handrail is installed for attaching / detaching the GPS antenna installed as an option on the counterweight, there will be a problem of cost increase or a problem that the turning radius will increase due to the newly installed scaffolding, etc. Will occur.

  The present invention has been devised in view of such problems, and an object thereof is to provide an antenna storage device for a work machine that can be safely stored without detaching a GPS antenna.

  In order to achieve the above object, an antenna storage device for a work machine according to a first aspect of the present invention is fixed to the work machine, is formed in a bowl shape capable of storing a GPS antenna therein, and faces upward. And a casing having an opening that is open and mounted in the vicinity of one side of the periphery of the opening so as to be rotatable by a first hinge structure, and supporting the GPS antenna on its upper surface in a substantially plate shape A formed support member, an actuator provided inside the casing and rotating the support member about the rotation axis of the first hinge structure, and facing the one side of the peripheral edge of the opening The cover is attached to the other side with a second hinge structure and covers the opening so as to be openable and closable, and the support member is fixed to the end on the other side facing the one side where the first hinge structure is located. Established A bracket, and a link member for connecting the bracket and the cover with a pin, and the first hinge structure, the second hinge structure, and the pin are parallel to each other in the direction of their rotation axes. It is characterized by being arranged like this.

  The antenna storage device for a work machine according to a second aspect of the present invention is the antenna storage device for the work machine according to the first aspect, wherein a bolt hole for fixing the casing to the work machine is provided on the bottom surface of the casing. The casing is characterized in that a bolt is screwed into the bolt hole from the inside of the casing and is fixed to the work machine.

According to the antenna storage device for a work machine according to the first aspect of the present invention, the GPS antenna can be stored safely and the theft and mischief of the GPS antenna can be reliably prevented while making it unnecessary to attach and detach the GPS antenna for each work. can do.
That is, during work, the actuator is operated to rotate the support member upward about the rotation axis of the first hinge structure so that the upper surface thereof is substantially horizontal. The rotation of the support member is transmitted to the cover by the link member, and when the support member rotates, the cover rotates in association with the rotation axis of the second hinge structure to open the opening. At this time, the GPS antenna supported on the upper surface of the support member is projected from the opening of the casing.

  After the work, the actuator is actuated again to rotate the support member downward about the rotation axis of the first hinge structure. Then, the support member is pulled into the casing together with the GPS antenna. At the same time, the rotation of the support member is transmitted to the cover by the link member, and the cover rotates about the rotation axis of the second hinge in conjunction with the rotation of the support member to close the opening.

Therefore, by rotating the support member with the actuator, the GPS antenna can be stored in the casing and stored without being removed from the work machine, or can be lifted out of the casing and used.
Further, according to the antenna storage device for a work machine of the present invention described in claim 2, in the state where the GPS antenna is stored, the opening of the casing is closed by the cover, so the GPS antenna cannot be removed. In addition, the casing cannot be removed because the bolt that fixes the casing to the work machine cannot be accessed. Therefore, it is possible to reliably prevent the GPS antenna from being stolen or mischievous.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[One Embodiment]
1 to 4 each show an antenna storage device for a work machine according to an embodiment of the present invention. FIG. 1 is a schematic cross-sectional view in the front-rear direction when a GPS antenna is used, and FIG. FIG. 3 is a schematic cross-sectional view in the front-rear direction with the antenna stored, FIG. 3 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 4 is a perspective view showing an overall image of the hydraulic excavator in which the antenna storage device is installed.

<Configuration>
Here, a hydraulic excavator as a typical example of a work machine will be described.
As shown in FIG. 4, the excavator 1 has a lower traveling body 2, an upper revolving body (airframe) 3 that is pivotably coupled to the lower traveling body 2, and extends forward from the upper revolving body 3. It is comprised from the working apparatus 4 attached to. The upper swing body 3 is provided with a counterweight 5 at the rear end thereof for balancing the weight with the work device 4, and a cab 6 for an operator to ride on the left side of the front part. It is installed.

The upper swing body 3 includes a pair of GPS antennas 10 disposed above the counterweight 5 and a pair of antenna storage devices 20 for storing the pair of GPS antennas 10 in order to measure the position of the excavator 1. Is provided.
The pair of GPS antennas 10 are arranged above the left and right end portions of the counterweight 5 so as to be separated from each other with an interval of at least 1.5 m, preferably 2 m or more in the body width direction. This is because the measurement points need to be separated in order to measure the position of the excavator 1 by the GPS antenna 10. Further, the GPS antenna 10 is arranged approximately 50 cm to 1 m above the counterweight 5 so that the magnetic field does not go out of order due to the influence of the counterweight 5 containing iron.

  In order to mount and store the GPS antenna 10 in such an arrangement, the antenna storage device 20 includes a casing 21, a support member 22, an electric hydraulic cylinder (actuator) 23, as shown in FIGS. The cover 24, the bracket 25, and the link member 26 are provided. The constituent members 21 to 26 of the antenna storage device 20 are respectively provided for the pair of GPS antennas 10.

  The casing 21 is a bowl-shaped member that is fixed to the left and right ends of the counterweight 5. And it has the opening part 21a opened upwards while being formed so that the GPS antenna 10 can be stored. Here, as shown in FIG. 4, the casing 21 is arranged such that the opening 21 a opens in a substantially square shape toward the rear obliquely upward.

Further, as shown in FIGS. 1 to 3, the bottom wall of the casing 21 is provided with a plurality of bolt holes 21 b for fixing the casing 21 on the counterweight 5. The casing 21 is fixed to the counterweight 5 by screwing a bolt 31 into the bolt hole 21 b from the inside of the casing 21.
The support member 22 is a member formed in a substantially plate shape and is attached to the casing 21 so as to be rotatable with respect to the casing 21 by the first hinge structure 32 in the vicinity of the front side of the peripheral portion of the opening 21a. The position of the state (position shown in FIG. 1) and the position of the tilted state (position shown in FIG. 2) can be taken. Further, the GPS antenna 10 is supported by the surface (upper surface).

Here, the first hinge structure 32 includes a fixed side member 32a attached to the side wall of the casing 21 and having a shaft hole, a movable side member 32b attached to the back surface (lower surface) of the support member 22 and having a shaft hole, and a fixed side member 32a. The rotating shaft 32c is inserted into the shaft hole of the side member 32a and the shaft hole of the movable side member 32b.
The electrohydraulic cylinder 23 is an actuator for rotating the support member 22 around the rotation shaft 32c of the first hinge structure 32, and a lower portion of the electric hydraulic cylinder 23 is attached to a bracket 33 standing on the bottom surface inside the casing 21. The upper portion of the support member 22 is supported by a bracket 34 fixed to the back surface of the support member 22. Although not particularly illustrated, a switch for operating the electric hydraulic cylinder 23 to extend and contract is provided in the cab 6.

  The cover 24 is attached to the rear side (that is, the side opposite to the front side where the first hinge structure 32 described above) of the peripheral part of the opening 21a by the second hinge structure 35, and the opening 24a is open. The part 21a is covered so that it can be opened and closed. Specifically, the cover 24 is attached so as to open the opening 21a when the support member 22 is in a horizontal position and close the opening 21a when the support member 22 is in a tilted position. .

  Here, the second hinge structure 35 includes a fixed side member attached to the casing 21 side and having a shaft hole, a movable side member attached to the cover 24 side and having a shaft hole, a shaft hole and a movable side of the fixed side member. The rotating shaft 35c is inserted into the shaft hole of the member. In addition, when the casing 21 and the cover 24 are combined, they form a substantially rectangular parallelepiped box. In other words, the substantially rectangular parallelepiped box member, the first point on the front side of the upper right side, the second point on the left side of the upper surface and the second point whose front-rear direction position is the same, and the vertical direction on the right side of the back surface Cut in a plane passing through the third point in the center and the third point of the left side of the back and the fourth point whose vertical position is the same position, and divide into two members. The other member is the cover 24 and the cut surface is the opening 21a.

The bracket 25 is a plate-like member fixed to the rear end portion of the support member 22 (that is, the portion of the side facing the front side where the first hinge structure 32 is located). And the pin hole is formed in the wall surface.
The link member 26 is, for example, an elongated plate-like member for forming a link mechanism that transmits the rotation of the support member 22 to the cover 24, and connects the bracket 25 and the cover 24 with pins 36 and 37. ing. That is, one end thereof is pivotally supported by inserting the pin 36 through the pin hole of the bracket 25, and the other end is connected to the inner surface of the left and right side walls of the cover 24 by the pin 37. Yes.

  The first hinge structure 32, the second hinge structure 35, and the pins 36, 37 are arranged such that the directions of the rotation shafts 32c, 35c are parallel to each other. Here, the rotating shafts 32c and 35c are arranged so as to be horizontal in the body width direction.

<Action and effect>
Since the antenna storage device for the working machine according to the embodiment of the present invention is configured as described above, the following operations and effects are obtained.

At the time of work, an operator pushes a switch in the cab 6 to operate the electrohydraulic cylinder 23 to extend the electrohydraulic cylinder 23 as shown in FIGS. 1 and 3, and to support the support member 22 of the first hinge structure 32. The upper surface of the rotary shaft 32c is rotated upward so that the upper surface thereof is substantially horizontal.
The rotation of the support member 22 is transmitted to the cover 24 by the link member 26, and when the support member 22 rotates, the cover 24 rotates in association with the rotation shaft 35 c of the second hinge 35 and opens. The part 21a is opened. At this time, the GPS antenna 10 supported on the upper surface of the support member 22 protrudes from the opening 21 a of the casing 21.

  After the work, the switch is pushed again, and the electrohydraulic cylinder 23 is operated to contract the electrohydraulic cylinder 23 as shown in FIG. 2, and the support member 22 is moved downward about the rotation shaft 32c of the first hinge structure 32. Rotate. Then, the support member 22 is drawn into the casing inside 21 together with the GPS antenna 10. At the same time, the rotation of the support member 22 is transmitted to the cover 24 by the link member 26, and the cover 24 rotates around the rotation shaft 35 c of the second hinge 35 in conjunction with the rotation of the support member 22. The part 21a is closed.

That is, by rotating the support member 22 and the cover 24 by the expansion / contraction operation of the electric hydraulic cylinder 23, the GPS antenna 10 is stored in the casing 21 and stored without being removed from the hydraulic excavator 1 or out of the casing 21. The GPS antenna 10 can be used by lifting.
Therefore, it is possible to securely store the GPS antenna 10 and prevent the GPS antenna 10 from being stolen or tampered with, without making it necessary to attach or detach the GPS antenna 10 every work.

  In the state in which the GPS antenna 10 is stored, the opening 21 a of the casing 21 is closed by the cover 24, so the GPS antenna 10 cannot be removed, and the bolt 31 that fixes the casing 21 to the counterweight 5. The casing 21 cannot be removed, and the GPS antenna 10 can be more reliably prevented from being stolen or mischievous.

[Others]
As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, A various deformation | transformation is possible in the range which does not deviate from the meaning of this invention.
For example, in the above embodiment, the electro-hydraulic cylinder 23 is used as an actuator for rotating the support member 22. However, the type of the actuator is not limited to this, and any one can be used as long as the support member 22 can be rotated. Such an actuator may be used.

In the above embodiment, the antenna storage device 20 is arranged so that the opening / closing direction of the cover 24 is the front-rear direction of the body. However, the opening / closing direction of the cover 24 is not limited to this. A storage device 20 may be arranged.
Further, in the above-described embodiment, the pair of antenna storage devices 20 are disposed at the left and right ends on the counterweight 5, but the pair of antenna storage devices 20 may be disposed at appropriate positions on the body 3. That is, the antenna storage device 20 is arranged so that the straight line connecting the pair of GPS antennas 10 is as parallel as possible to the direction orthogonal to the extending direction of the work device 4 (that is, the longitudinal direction of the machine body), and the pair of GPS antennas. Although it is preferable to arrange the antennas 10 apart from each other, the antennas 10 may be arranged at appropriate positions on the body 3 as long as a desired position can be measured.

  Furthermore, although the case where the antenna storage device of the work machine of the present invention is applied to a hydraulic excavator has been described in the above embodiment, the antenna storage device of the work machine of the present invention can be applied to other work machines such as a bulldozer and a crane. It is possible to apply.

It is a figure which shows the antenna storage apparatus of the working machine which concerns on one Embodiment of this invention, Comprising: It is a typical longitudinal cross-sectional view of the state which uses the GPS antenna. It is a figure which shows the antenna storage apparatus of the working machine which concerns on one Embodiment of this invention, Comprising: It is typical sectional drawing of the front-back direction in the state which stored the GPS antenna. It is a figure which shows the state which uses the GPS antenna of the antenna storage apparatus of the working machine which concerns on one Embodiment of this invention, Comprising: It is AA arrow sectional drawing of FIG. It is a perspective view which shows the whole image of the hydraulic shovel in which the antenna storage apparatus of the working machine which concerns on one Embodiment of this invention was installed.

Explanation of symbols

1 Excavator (work machine)
2 Lower traveling body 3 Upper turning body (airframe)
4 Working device 5 Counterweight 6 Cab 10 GPS antenna 20 Antenna storage device 21 Casing 21a Opening 21b Bolt hole 22 Support member 23 Electric hydraulic cylinder (actuator)
24 Cover 25 Bracket 26 Link member 31 Bolt 32 First hinge structure 32c Rotating shaft 33, 34 Bracket 35 Second hinge structure 35c Rotating shaft 36, 37 Pin

Claims (2)

A casing that is fixed to the work machine and is formed in a bowl shape capable of storing a GPS antenna therein, and has an opening that opens upward,
A support member formed in a substantially plate shape, which is pivotally attached to the vicinity of one side of the peripheral portion of the opening by a first hinge structure and supports the GPS antenna on its upper surface;
An actuator provided inside the casing and configured to rotate the support member about a rotation axis of the first hinge structure;
A cover that is attached to the other side of the peripheral edge of the opening opposite to the one side with a second hinge structure and covers the opening so as to be openable and closable.
In the support member, a bracket fixed to an end portion on the other side facing the one side where the first hinge structure is located;
A link member for connecting the bracket and the cover with pins;
An antenna storage device for a work machine, wherein the first hinge structure, the second hinge structure, and the pin are arranged such that directions of their rotation axes are parallel to each other. Bolt holes for fixing the casing to the work machine are provided on the bottom surface of the casing,
2. The antenna storage device for a work machine according to claim 1, wherein the casing is screwed into the bolt hole from the inside of the casing and fixed to the work machine.

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