JP6787384B2 - Construction machinery - Google Patents

Description

The present invention relates to construction machinery.

In construction machinery, a generator may be attached to an upper swing body mounted on a lower traveling body. As a construction machine equipped with a generator, for example, a boom is provided on an upper swing body so as to be swingable, and a lifting magnet is attached to a hanging rope suspended from the boom. In this construction machine, a generator is used to excite the lifting magnet.

Conventionally, as such a generator, a relatively small size generator that generates electricity by an engine used for driving a construction machine, such as traveling of a lower traveling body, turning of an upper swinging body, and swinging of a boom, has been used.

A generator having a relatively small size is arranged on the opposite side of the driver's cab with the boom, for example (see Japanese Patent Application Laid-Open No. 2012-62178). In addition, the control panel of this generator is arranged on the top surface of this generator. The generator and control panel are used as scaffolding for the passage leading to the building cover extending in the front-rear direction on the side of the upper swing body.

Further, as a conventional construction machine, it has been proposed that a generator is provided behind the engine arranged on the deck provided on the side of the upper swing body so that the power output from the engine can be easily transmitted. (See JP-A-2010-228884).

Japanese Unexamined Patent Publication No. 2012-62178 Japanese Unexamined Patent Publication No. 2010-228884

On the other hand, there is an increasing need to use a generator with a large capacity today. Specifically, there is an increasing need for the use of relatively large generators equipped with their own engines. In addition, a generator equipped with such a unique engine needs to be accessed frequently before and after the start of work, so that it is required to be easily accessible while it is attached to a construction machine. There is.

However, in the construction machine described in Patent Document 1, the generator and the control panel are configured as a step stand to the building cover, and the access to the generator is not easy. In addition, this construction machine is provided with a generator at a position continuous with the building cover in the front-rear direction. However, since the width of the upper swing body of construction machinery is limited in advance to meet the transportation restrictions, it is permissible to install a relatively large size generator at a position continuous with the building cover in the front-rear direction. It may not be done.

Further, in the construction machine described in Patent Document 2, a generator is arranged on the deck. However, due to the above-mentioned transportation restrictions, it is usually necessary to arrange various other members on this deck, and it is difficult to provide a space for installing a generator. Further, even if it is possible to provide a space for installing a generator, it is difficult to install a generator having a relatively large size, and access to this generator is not easy.

In view of the above inconvenience, it is an object of the present invention to provide a construction machine capable of easily accessing a generator.

The construction machine according to the present invention made to solve the above problems is attached to a lower traveling body, an upper rotating body mounted on the lower traveling body, and a side portion of the upper rotating body, and is attached in the front-rear direction. An extending catwalk, a pedestal detachably provided on the upper swing body and extending forward from the front end of the catwalk, a generator detachably arranged on the gantry, and a control panel of the generator. To be equipped.

The construction machine is provided with a pedestal extending forward from the front end of the catwalk, and a generator is detachably arranged on the gantry, so that the generator can be easily accessed via the catwalk. .. Further, since the gantry is detachably provided on the upper swing body of the construction machine, for example, the gantry and the generator can be removed when the construction machine is transported. Further, in the construction machine, since the gantry is arranged in front of the front end portion of the catwalk, the width of the gantry can be easily increased. Therefore, the construction machine can easily dispose of a generator having a relatively large size.

The pedestal is formed on a scaffolding portion continuous from the front end portion of the catwalk to the front, a mounting portion formed in front of the scaffolding portion on which the generator is mounted, and erected on the side of the scaffolding portion. It is preferable to have a mounting frame to which the control panel is mounted. In this way, the gantry is formed in front of the scaffolding portion that is continuous from the front end portion of the catwalk and in front of the scaffolding portion, and the mounting portion on which the generator is mounted and the side of the scaffolding portion. By having a mounting frame that is erected on the side and to which the control panel is mounted, the operator can easily access the generator and the control panel while standing on the scaffolding portion.

The construction machine is configured such that the catwalk can be attached to and detached from the upper swing body, and the width of the generator is preferably larger than the width of the catwalk. As described above, since the catwalk is configured to be detachable from the upper swing body, the width of the upper swing body can be increased to the width of the transportation limit. Further, as described above, since the construction machine can easily increase the width of the gantry, the width of the generator can be easily increased in accordance with the width of the gantry. Therefore, while arranging the members other than the generator at a desired position, the generator having a large capacity can be easily arranged in an easily accessible state.

The construction machine is attached to the upper swivel body and is connected to a support arm that extends forward from the front portion of the upper swivel body and the support arm that extends laterally from the support arm and lowers the gantry. It is preferable to further provide a support piece that supports from. In this way, a support arm that is attached to the upper swing body and extends forward from the front portion of the upper swing body, is connected to the support arm, extends laterally from the support arm, and the gantry is mounted from below. By further providing a supporting piece to support, the gantry can be stably supported by the support arm and the support piece.

In the present invention, "front" means the front during normal driving (forward), and "rear" means the rear during normal driving. Further, the "side" means the left-right direction with respect to the front-back direction.

The construction machine according to the present invention has easy access to the generator.

It is a schematic diagram which shows the construction machine which concerns on one Embodiment of this invention. It is a partially enlarged perspective view seen from diagonally above the front of the construction machine of FIG. It is a partially enlarged plan view which shows the gantry and the power generation unit of the construction machine of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

[Construction machinery]
The construction machines of FIGS. 1 to 3 are machines for performing construction work and the like, and more specifically, a crawler crane. The construction machine includes a lower traveling body 1, an upper swivel body 2 mounted on the lower traveling body 1, a catwalk 3 attached to a side portion of the upper swivel body 2, and an upper swivel body 2 extending in the front-rear direction. A pedestal 4 detachably provided on the pedestal and extending forward from the front end of the catwalk 3, a generator 5a detachably arranged on the gantry 4, and a control panel 5b of the generator 5a are provided. The generator 5a and the control panel 5b constitute a power generation unit 5. Further, the construction machine has a boom 6 attached to the front portion of the upper swing body 2 so as to be swingable (undulating), and a guard 7 arranged between the boom 6 and the catwalk 3 on the upper swing body 2. A cab 8 provided in front of the guard 7 on the upper swing body 2 on the opposite side of the boom 6, a hanging rope 10 hanging from the tip of the boom 6 and a hook 9 attached to the lower end, and a hook 9. It is provided with a lifting magnet 11 which is attached to and is supplied with electric power output from the generator 5a, and a support portion 12 which is attached to the upper swing body 2 and supports the gantry 4.

The lower traveling body 1 is configured to be self-propelled, and has a pair of crawlers 1a as traveling devices. The upper swivel body 2 has a swivel frame 2a that can rotate horizontally on the lower traveling body 1. A boom 6, a guard 7, a cab 8 and a support portion 12 are attached to the swivel frame 2a. The base end of the boom 6 is attached to the center of the swivel frame 2a in the left-right direction. The boom 6 undulates around the base end portion to determine a horizontal position for suspending the suspension rope 10. The guard 7 is a structure for accommodating members such as an engine inside, and the internal space thereof constitutes an engine room. The cab 8 is a driver's cab on which workers board. The lifting magnet 11 is configured to be able to capture a steel material or the like by magnetic adsorption.

(catwalk)
The catwalk 3 is a passage extending in the front-rear direction on the side of the upper swivel body 2. The catwalk 3 is attached to the side portion of the swivel frame 2a, and is arranged at a position protruding laterally (outside in the left-right direction) from the side edge of the swivel frame 2a.

The catwalk 3 is detachably attached to the upper swivel body 2, and more specifically, the catwalk 3 is detachably attached to the swivel frame 2a. The catwalk 3 is fixed to the swivel frame 2a by tightening bolts, for example. The catwalk 3 is removed during transportation because the width of the construction machine must meet the transportation restrictions. That is, in the construction machine, the catwalk 3 is arranged at a position exceeding the transportation limit width.

(Mount)
The gantry 4 is formed on the scaffolding portion 13 continuous forward from the front end portion of the catwalk 3, the mounting portion 14 formed in front of the scaffolding portion 13 on which the generator 5a is mounted, and the side of the scaffolding portion 13. It has a first mounting frame 15 that is erected and to which the control panel 5b is mounted. Further, the gantry 4 has a second mounting frame 17 to which a mirror 16 is mounted so that an operator can check the rear side from inside the cab 8. The second mounting frame 17 is erected on the side of, for example, the scaffolding portion 13 and / or the mounting portion 14.

The scaffolding portion 13 has a rectangular access passage 13a in a plan view continuous from the catwalk 3 and a rectangular access space 13b in a plan view continuous forward from the access passage 13a. The access passage 13a is fixed to the swivel frame 2a by, for example, tightening bolts. The access space 13b is provided in an area including a space in front of the front end portion of the upper swivel body 2. More specifically, the access space 13b is provided in an area including a space in front of the front end portion of the guard 7.

The mounting portion 14 is provided in a region including a space in front of the front end portion of the upper swivel body 2, and more specifically, is provided in a region including a space in front of the front end portion of the guard 7. Specifically, the mounting portion 14 has substantially the same width as the access space 13b, and is formed continuously forward from the access space 13b. By utilizing the space in front of the front end portion of the upper swivel body 2, the construction machine expands the access space 13b and the mounting portion 14 inward from the inner side edge of the catwalk 3, and the catwalk 3 It can be formed in a width larger than the width of. As a result, the construction machine can easily dispose a large generator 5a on the mounting portion 14 by utilizing the region of the front portion of the guard 7.

The first mounting frame 15 is erected on the side of the outer side edge of the access space 13b.

Since the access space 13b is formed at a position continuous forward from the catwalk 3, the construction machine can be easily moved to the access space 13b via the catwalk 3. In the construction machine, the gantry 4 has the scaffolding portion 13, the mounting portion 14, and the first mounting frame 15, so that the operator can easily access the generator 5a and the control panel 5b by standing on the scaffolding portion 13. can do. Specifically, in the construction machine, the generator 5a is arranged in front of the access space 13b having a substantially rectangular shape in a plan view, and the control panel 5b is arranged on the side of the access space 13b. Can easily access both the generator 5a and the control panel 5b on the access space 13b. Specifically, according to the construction machine, the worker operates the engine of the generator 5a and the control panel 5b, maintains the generator 5a and the control panel 5b, refuels the engine, etc. on the access space 13b. It can be done easily.

(Support part)
The support portion 12 is attached to the upper swivel body 2 and is connected to a support arm 12a extending forward from the front portion of the upper swivel body 2 and a support arm 12a, extending laterally from the support arm 12a to provide a gantry 4. It has a support piece 12b that supports from below. The support arm 12a is fixed to the swivel frame 2a by, for example, tightening a bolt. Further, the support piece 12b is fixed to the support arm 12a by, for example, tightening a bolt.

In the construction machine, since the access space 13b and the mounting portion 14 project forward from the front end portion of the swivel frame 2a, it is difficult to directly fix the access space 13b and the mounting portion 14 to the side edge of the swivel frame 2a. The support strength of the access space 13b and the mounting portion 14 may be insufficient. In this respect, the construction machine can stably support the gantry 4 by having the support arm 12a and the support piece 12b. As a result, the generator 5a and the control panel 5b can be stably held on the gantry 4, and the work on the gantry 4 becomes safer.

(Generator)
The generator 5a is used, for example, to excite the lifting magnet 11. The generator 5a is fixed to the gantry 4 by, for example, tightening bolts. The generator 5a may be configured to generate power by an external engine such as an engine housed in the guard 7, but it is preferable that the generator 5a is equipped with a unique engine independent of the external engine. The capacity of the generator 5a can be increased by mounting a unique engine.

When the generator 5a is equipped with its own engine, the size of the generator 5a becomes large, for example, the width of the generator 5a is equal to or larger than the width of the guard 7. In this case, it is difficult to accommodate the generator 5a in the guard 7, and it is also difficult to increase the width of the guard 7 in accordance with the width of the generator 5a due to the transportation restrictions of construction machinery. Further, when the generator 5a is equipped with its own engine, the worker is required to access the generator 5a before and after the start of the work, but if the generator 5a is housed in the guard 7. , Access to the generator 5a becomes difficult. Further, if the generator 5a is housed in the guard 7, there is a possibility that the space for arranging other necessary members may be insufficient, or a problem may occur due to heat generation, exhaust, or the like of the generator 5a. On the other hand, in the construction machine, since the generator 5a is detachably provided on the gantry 4, it is possible to improve the accessibility while satisfying the transportation restriction.

As described above, the generator 5a is arranged on the gantry 4 extending forward from the front end portion of the catwalk 3. The generator 5a is arranged in a region including a space in front of the front end portion of the guard 7, so that the generator 5a is arranged at a position close to the base end portion of the boom 6 with a space. Therefore, the construction machine can have a relatively short distance between the generator 5a and the lifting magnet 11. As a result, the wiring between the generator 5a and the lifting magnet 11 can be facilitated and the wiring can be shortened.

The width of the generator 5a may be larger than the width of the catwalk 3. As described above, in the construction machine, the width of the upper swivel body 2 can be increased to the width of the transportation limit because the catwalk 3 is configured to be detachable from the upper swivel body 2. Further, as described above, since the construction machine can easily increase the width of the mounting portion 14 by utilizing the space in front of the front end portion of the guard 7, the width of the generator 5a is mounted. It can be increased according to the width of the portion 14. As a result, the construction machine can easily arrange the generator 5a having a large capacity in an easily accessible state while arranging the members other than the generator 5a at a desired position such as in the guard 7.

(control panel)
The control panel 5b includes a rectifier that rectifies the AC output of the generator 5a, a switch that controls the supply of current to the lifting magnet 11, and the like. The control panel 5b is fixed to the first mounting frame 15 by tightening bolts, for example.

<Advantage>
The construction machine is provided with a gantry 4 extending forward from the front end portion of the catwalk 3, and the generator 5a is detachably arranged on the gantry 4, so that the generator 5a can be accessed via the catwalk 3. Is easy. Further, since the width of the gantry 4 can be easily increased in the construction machine, a generator 5a having a relatively large size can be easily arranged.

[Other Embodiments]
The above embodiment does not limit the configuration of the present invention. Therefore, in the above-described embodiment, the components of each part of the above-described embodiment can be omitted, replaced or added based on the description of the present specification and common general technical knowledge, and all of them are construed as belonging to the scope of the present invention. Should be.

For example, in the above embodiment, the case where the construction machine is a crawler crane has been described. However, the construction machine can be configured as a machine for construction work other than the crawler crane, and may be, for example, a wheel crane, a hydraulic excavator, an excavator, or the like.

In the above embodiment, the configuration used by the generator to excite the lifting magnet has been described. However, the generator may be configured to supply power to equipment other than the lifting magnet. Examples of devices other than lifting magnets include various devices that require electric drive, such as coil lifters, electric buckets, and electric vibro hammers. Further, even when the construction machine is provided with these devices, the distance between these devices and the generator can be relatively shortened, and wiring can be facilitated and shortened, as in the case where the lifting magnet is provided. ..

The specific configuration of the gantry is not limited to the configuration of the above embodiment. For example, the gantry does not have to have a mounting frame to which the control panel is mounted. In this case, for example, the control panel may be configured to be attached to the catwalk. Further, the gantry does not necessarily have to have a mounting frame (second mounting frame) for mounting the mirror.

The construction machine may have the catwalk non-detachably fixed to the upper swing body as long as the transportation restrictions are satisfied.

The size of the generator is not particularly limited. The width of the generator may be smaller than the width of the catwalk and / or the width of the guard as long as it satisfies the required capacity.

The construction machine does not necessarily have to have the support portion if the gantry can be held sufficiently stably.

Since the construction machine according to the present invention can easily access the generator, it is suitable as a machine for construction work having a generator equipped with a unique engine.

1 Lower traveling body 1a Crawler 2 Upper swivel body 2a Swing frame 3 Catwalk 4 Stand 5 Power generation unit 5a Generator 5b Control panel 6 Boom 7 Guard 8 Cab 9 Hook 10 Suspended rope 11 Lifting magnet 12 Support part 12a Support arm 12b Support piece 13 Scaffolding part 13a Access passage 13b Access space 14 Mounting part 15 First mounting frame 16 Mirror 17 Second mounting frame

Claims (4)

With the lower running body,
The upper swivel body mounted on the lower traveling body and
A catwalk that is attached to the side of the upper swing body and extends in the front-rear direction,
A pedestal that is detachably provided on the upper swing body and extends forward from the front end of the catwalk,
A generator that is detachably arranged on the above mount and
A construction machine equipped with a control panel for the above generator. The pedestal is formed on a scaffolding portion continuous from the front end portion of the catwalk to the front, a mounting portion formed in front of the scaffolding portion on which the generator is mounted, and erected on the side of the scaffolding portion. The construction machine according to claim 1, further comprising a mounting frame to which the control panel is mounted. The catwalk is configured to be removable from the upper swing body.
The construction machine according to claim 1 or 2, wherein the width of the generator is larger than the width of the catwalk. A support arm that is attached to the upper swing body and extends forward from the front part of the upper swing body,
The construction machine according to claim 1, claim 2 or claim 3, further comprising a support piece connected to the support arm, extending laterally from the support arm, and supporting the gantry from below.

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