JP2020020114A - Construction machinery and camera mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction machine capable of ensuring a sufficient angle of view of a camera when an additional counterweight is attached to a standard counterweight in a configuration in which a camera is arranged on the counterweight. A hydraulic excavator 1 includes a machine body 33, a first counterweight 4 having a first recess formed therein, and a second counterweight 5 mounted behind the first counterweight 4 and having a second recess formed therein. And prepare. Further, the hydraulic excavator 1 includes a base plate attached to the first counterweight and a camera mounting bracket attached to the base plate to which a camera can be attached. The camera mounting bracket is configured such that the camera is placed in the first recess when the second counterweight is not mounted. Further, the camera mounting bracket is configured so that the camera is arranged in the second recess when the second counterweight is mounted. [Selection diagram] Fig. 2

Description

The present invention relates to a construction machine provided with a camera for photographing the rear of an aircraft, and a camera mounting structure.

  2. Description of the Related Art Conventionally, as a camera mounting structure for a construction machine, there is a structure in which a concave portion is provided on a rear surface of an engine cover (14) and a rear camera (17) is provided above the concave portion (for example, see Patent Document 1).

JP 2013-204288 A

  However, in Patent Literature 1, since the rear camera (17) is attached to the engine cover (14), the rear camera (17) may be damaged due to a collision during work or the like. Further, in Patent Document 1, since the rear camera (17) is disposed at a relatively high position, it is difficult to photograph a place close to the body.

  On the other hand, the inventors of the present application have recalled that a recess is provided in a relatively low and robust counterweight, and a rear camera is installed in the recess.

  However, depending on the model, an additional counterweight may be attached to the rear of the standard counterweight. When the additional counterweight is mounted, there is a problem that a sufficient angle of view of the camera cannot be secured if the camera is installed in the recess of the standard counterweight.

  Therefore, the present invention provides a construction machine capable of securing a sufficient angle of view of a camera in a configuration in which a camera is arranged on a counterweight, even when an additional counterweight is mounted on a standard counterweight. The purpose is to:

  In order to achieve the above object, the present invention relates to a construction machine, comprising: a machine body; a first counterweight mounted behind the machine body and having a first recess formed therein; A second counterweight mounted rearward and having a second recess formed therein, a base plate mounted on the first counterweight, and a camera mounting bracket mounted on the base plate and capable of mounting a camera, The camera mounting bracket to which the camera is mounted is configured such that the camera is disposed in the first concave portion when the second counterweight is not mounted, and when the second counterweight is mounted. Provides a construction machine, wherein the camera is configured to be disposed in the second recess.

  Further, the camera mounting bracket to which the camera is mounted, a first camera mounting bracket configured so that the camera is arranged in the first recess when mounted on the base plate, A second camera mounting bracket configured to be disposed in the second recess, wherein when the second counterweight is not mounted, the first camera mounting bracket is mounted on the base plate; When two counter weights are mounted, it is preferable that the second camera mounting bracket is mounted on the base plate.

  The camera mounting bracket is formed of a member that is elongated in the machine front-rear direction, and has a first fixing portion and the second fixing portion located in front of the machine with respect to the first fixing portion. When the camera mounting bracket to which the camera is attached is fixed to the base plate via the first fixing portion, the camera is arranged in the first recess, and the camera mounting bracket to which the camera is attached is the It is preferable that the camera is arranged in the second concave portion when the camera is fixed to the base plate via two fixing portions.

  Further, the base plate is provided with a harness holding portion that holds the harness of the camera in a bundle, and when the second counterweight is not mounted, the harness is bundled and held by the harness holding portion. When the second counterweight is mounted, it is preferable that a part of the harness is drawn out to a side on which the second counterweight is mounted.

  The present invention also provides a construction comprising: a first counterweight mounted behind a machine body and having a first recess formed therein; and a second counterweight mounted behind the first counterweight and having a second recess formed therein. A camera attachment structure for attaching a camera to a machine, comprising: a base plate attached to the first counterweight; and a camera attachment bracket attached to the base plate, to which the camera can be attached. The mounted camera mounting bracket is configured such that the camera is disposed in the first recess when the second counterweight is not mounted, and the camera is mounted when the second counterweight is mounted. Is further arranged to be disposed in the second concave portion.

  According to the present invention, when the second counter weight is not mounted, the camera is arranged in the first recess of the first counter weight, and when the second counter weight is mounted, the camera is moved to the second recess of the second counter weight. It is arranged in the recess. Therefore, in a configuration in which a camera is arranged on the counterweight, it is possible to ensure a sufficient angle of view of the camera even when an additional counterweight is mounted on the standard counterweight.

1 is a side view showing a hydraulic excavator (construction machine) according to an embodiment of the present invention. The side view which shows the hydraulic shovel to which the additional counterweight (2nd counterweight) was attached. FIG. 3 is a perspective view showing a standard counter weight (first counter weight). FIG. 9 is a perspective view showing an additional counter weight (second counter weight). FIG. 4 is a perspective view of the base plate and the first camera mounting bracket as viewed obliquely from above. The perspective view which looked at the base plate and the 1st camera mounting bracket from diagonally below. The figure which looked at the base plate from the lower side. The figure which shows a mode that a camera is arrange | positioned at the 1st recessed part of a standard counterweight. The perspective view which looked at the base plate and the 2nd camera mounting bracket from diagonally above. The perspective view which looked at the base plate and the 2nd camera mounting bracket from diagonally below. The figure which shows the relationship between a 2nd camera mounting bracket and an engine hood. The figure which shows a mode that a camera is arrange | positioned at the 2nd recessed part of the additional counterweight. The figure for demonstrating a harness holding part. The figure which shows the camera mounting bracket which concerns on a modification.

<1. Embodiment>
A construction machine and a camera mounting structure according to an embodiment of the present invention will be described with reference to FIGS. Hereinafter, a hydraulic excavator 1 shown in FIG. 1 will be exemplified as an example of a construction machine according to the present invention.

  As shown in FIGS. 1 and 2, the excavator 1 includes a crawler type lower traveling body 2 and an upper revolving superstructure 3. The upper revolving unit 3 is mounted on the lower traveling unit 2 and is capable of revolving around the vertical axis with respect to the lower traveling unit 2.

  The upper swing body 3 includes a cab (driver's seat) 31 and a machine main body 33 disposed behind the cab 31.

  As shown in FIG. 1, a first counterweight 4 is mounted as a standard counterweight on the lower rear side of the machine main body 33.

  As shown in FIG. 3, the first counter weight 4 has a first concave portion 41 formed at an upper center when viewed from the rear. A rear camera 9 (see FIGS. 5 and 6) described later is arranged in the first recess 41. Bolt holes 43a and 43b for attaching a base plate 6 (see FIGS. 5 and 6) described later are formed on the upper surface of the first counterweight 4 on the left side of the first concave portion 41.

  As shown in FIG. 2, a second counter weight 5 may be attached to the rear side of the first counter weight 4 as an additional counter weight.

  As shown in FIG. 4, the second counterweight 5 has a second concave portion 51 formed at the upper center when viewed from the rear. A rear camera 9 (see FIGS. 5 and 6) described later is arranged in the second concave portion 51. When the second counter weight 5 is attached to the first counter weight 4, the second recess 51 of the second counter weight 5 is formed at a position that is continuous with the first recess 41 of the first counter weight 4 in the front-rear direction. ing.

  Next, a camera mounting unit 10 (10a, 10b) for mounting the rear camera 9 will be described with reference to FIGS. The camera mounting unit 10 is an example of the camera mounting structure according to the present invention.

  As described above, in the excavator 1, only the first counterweight 4 is attached to the machine main body 33 (hereinafter, referred to as “first mode”), and the second counterweight 5 in addition to the first counterweight 4. (Hereinafter, referred to as “second mode”). In the present embodiment, a camera mounting unit 10 (10a, 10b) capable of securing a sufficient angle of view of the rear camera 9 is illustrated in both the first mode and the second mode.

  Hereinafter, first, the camera mounting unit 10a used in the first mode will be described based on FIGS. 5 to 8, and then the camera mounting unit 10b used in the second mode will be described based on FIGS. 9 to 12. .

  As shown in FIGS. 5 and 6, the camera mounting unit 10 a includes a base plate 6 mounted on the first counterweight 4 and a camera mounting bracket 7 mounted on the base plate 6.

  As shown in FIG. 7, two bolt holes 63a and 63b are formed in the base plate 6. When attaching the base plate 6 to the first counterweight 4 (see FIG. 8), two bolts BT1 and BT2 (see FIG. 5) are inserted into and engaged with the two bolt holes 63a and 63b, respectively.

  As shown in FIG. 7, the base plate 6 is provided with four back nuts 61a, 61b, 61c and 61d. When mounting the camera mounting bracket 7 to the base plate 6 (see FIGS. 5 and 6), four bolts BT3, BT4, BT5, and BT6 (see FIG. 5) are respectively provided at four back nuts 61a, 61b, 61c, 61d.

  A cutout 65 is formed in the base plate 6 on the machine rear end side. The rear camera 9 attached to the camera attachment bracket 7 in the first mode is arranged in the notch 65.

  Further, as shown in FIG. 13, the base plate 6 is provided with a harness holding portion 67 that holds the harness 90 of the rear camera 9 in a bundle. The harness holding section 67 includes a fixing member 671 extending downward from the lower surface of the base plate 6 (see also FIGS. 6 and 10), and a winding member 673 fixed to the fixing member 671 and around which the harness 90 is wound. It is composed.

  When the second counterweight 5 is not mounted and only the first counterweight 4 is mounted, the harness 90 is bundled and held by being wound around the winding member 673 of the harness holding section 67. On the other hand, when the second counter weight 5 is mounted on the first counter weight 4, a part of the harness 90 is pulled out to the side where the second counter weight 5 is mounted (machine rearward).

  Next, the camera mounting bracket 7 in the first embodiment will be described. As shown in FIGS. 5 and 6, the camera mounting bracket 7 includes a connection plate 71, a rear plate 72, and a side plate 73.

  The connecting plate 71 is connected to the upper surface of the base plate 6 by four bolts BT3, BT4, BT5, and BT6.

  The rear plate 72 is a member that extends downward from the rear end of the connection plate 71. The rear plate 72 is formed with a rectangular hole at a position where the lens of the rear camera 9 is arranged to secure an angle of view.

  The side plate 73 is a member arranged on the side of the rear camera 9. A bolt hole is formed in the side plate 73, and the rear camera 9 is attached to the side plate 73 by attaching a bolt to the bolt hole.

  Further, as shown in FIG. 6, a cushioning material 69 for preventing direct contact with other members is provided on the lower surface of the base plate 6.

  As shown in FIG. 8, when the base plate 6 is mounted on the first counterweight 4 and the camera mounting unit 10a is mounted on the first counterweight 4, the rear camera 9 mounted on the camera mounting unit 10a is moved to the first position. The counter weight 4 is disposed in the first recess 41. Then, the first concave portion 41 is closed by the rear plate 72 of the camera mounting bracket 7 to shield mechanical noise from the engine.

  Next, the camera mounting unit 10b according to the second embodiment will be described. In the second embodiment, the same base plate 6 as in the first embodiment is used. That is, the base plate 6 is common in the first mode and the second mode.

  On the other hand, the camera mounting bracket 8 mounted on the common base plate 6 is different from the camera mounting bracket 7 according to the first embodiment. Hereinafter, the points different from the first embodiment will be mainly described.

  As shown in FIGS. 9 and 10, the camera mounting bracket 8 is formed of a plate-like member that is longer in the machine front-rear direction than the camera mounting bracket 7 according to the first embodiment (see FIGS. 5 and 6). You. Specifically, the camera mounting bracket 8 includes a connection plate 81a, an inclined portion 810, an extension plate 81b, a rear plate 82, and a side plate 83.

  The connection plate 81a is a member that is connected to the upper surface of the base plate 6 by two bolts BT5 and BT6 while being in contact with the upper surface of the base plate 6.

  As shown in FIG. 11, the inclined portion 810 is a portion that is inclined downward at a position where the lower end of the engine hood 330 disposed above the camera mounting unit 10b contacts. By providing such an inclined portion 810, the opening and closing of the engine bonnet 330 can be performed smoothly.

  The stretching plate 81b is a member that extends from the lower end of the inclined portion 810 to the rear of the machine (on the side where the second counterweight 5 is mounted). As shown in FIG. 11, the extension plate 81b is disposed substantially parallel to the connection plate 81a.

  As shown in FIGS. 10 and 11, a cushioning material 85 for preventing direct contact with other members is provided on the lower surface of the stretching plate 81b.

  The rear plate 82 is a member that extends downward from the rear end of the stretched plate 81b. The rear plate 82 is formed with a rectangular hole at a position where the lens of the rear camera 9 is arranged to secure an angle of view.

  The side plate 83 is a member arranged on the side of the rear camera 9. Bolt holes for bolts for fixing the rear camera 9 are formed in the side plate 83. By attaching a bolt to the bolt hole, the rear camera 9 is attached to the side plate 83.

  As shown in FIG. 9, when the camera attachment unit 10 b is attached, the rear camera 9 is disposed in a second recess 51 formed on the second counterweight 5. The second concave portion 51 is closed by the rear plate 82 of the camera mounting bracket 8 being disposed, and shields mechanical sound from the engine.

  As described above, according to the present embodiment, when the second counterweight 5 is not mounted, the rear camera 9 is disposed in the first recess 41 of the first counterweight 4. When the second counterweight 5 is mounted, the rear camera 9 is disposed in the second recess 51 of the second counterweight 5. Therefore, in the configuration in which the rear camera 9 is arranged on the counter weight, a sufficient angle of view is secured even when the second counter weight 5 (additional counter weight) is mounted on the first counter weight 4 (standard counter weight). It is possible.

  Further, according to the present embodiment, since the base plate 6 is shared in the first mode and the second mode, it is not necessary to remove the base plate 6 with the attachment / detachment of the second counterweight 5, and the camera is mounted. Work efficiency is high because the brackets 7 and 8 may be replaced as appropriate.

  Further, according to the present embodiment, the camera mounting unit 10 (10a, 10b) is installed on the first counterweight disposed at the lower rear of the machine main body 33. Therefore, the rear camera 9 attached to the camera attachment unit 10 is also disposed at a relatively low position, and it is possible to photograph a place close to the machine main body 33.

  Further, according to the present embodiment, when only the first counterweight 4 is mounted, the harness 90 is bundled and held by being wound around the winding member 673 of the harness holding portion 67. On the other hand, when the second counterweight 5 is mounted, a part of the harness 90 is pulled out to the side on which the second counterweight 5 is mounted (to the rear of the machine). Therefore, it is possible for the harness 90 to follow the movement of the rear camera 9 according to the attachment / detachment of the second counterweight. In particular, on the side of the harness 90 extending from the winding member 673 to the controller (not shown) of the machine main body 33, fixing members 91, 93 and the like are provided at various places. On the other hand, the portion of the harness 90 from the winding member 673 to the connection to the rear camera 9 is not fixed by the above-described fixing members 91 and 93 and is wired on the lower surface of the camera mounting bracket 8. I have. Therefore, work such as release of fixing by the fixing member does not occur with the attachment and detachment of the second counterweight 5, and work efficiency when installing the rear camera 9 is increased.

<2. Modification>
The construction machine and camera mounting structure according to the present invention are not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims.

  For example, in the above-described embodiment, the case where the camera mounting brackets 7 and 8 are formed of different members in the first mode and the second mode has been exemplified, but the present invention is not limited to this. As in a camera mounting bracket 78 shown in FIG. 14, a common member that is long in the machine front-rear direction may be used.

  Specifically, the camera mounting bracket 78 is formed with a bolt hole 781h and a bolt hole 782h located forward of the machine with respect to the bolt hole 781h.

  When the camera mounting bracket 78 is fixed to the base plate 6 via the bolt hole 781h, the rear camera 9 is disposed in the first recess 41 of the first counterweight 4. On the other hand, when the camera mounting bracket 78 is fixed to the base plate 6 via the bolt hole 782h, the rear camera 9 is disposed in the second recess 51 of the second counterweight 5.

  According to such a modification, the camera mounting bracket 78 mounted on the base plate 6 can be shared, so that the cost is reduced.

  As described above, the construction machine according to the present invention is suitable for a hydraulic shovel including a rear camera.

1 hydraulic excavator, 2 undercarriage, 3 revolving superstructure, 4 first counterweight,
5 Second counterweight, 6 Base plate, 7, 8 Camera mounting bracket,
9 rear camera, 10a, 10b camera mounting unit, 31 cab, 33 machine body,
330 engine bonnet, 41 first concave portion, 43a, 43b bolt hole,
51 second recess, 61a-1d back nut, 63a, 63b bolt hole, 65 notch,
67 harness holding portion, 69 cushioning material, 71 connection plate, 72 rear plate, 73 side plate,
81a connecting plate, 81b stretched plate, 82 rear plate, 83 side plate, 85 cushioning material,
90 harness, 671 fixing member, 673 winding member, 810 inclined portion,
BT1-BT6 bolt

Claims (5)

A construction machine,
Machine body,
A first counterweight mounted behind the machine body and having a first recess formed therein;
A second counterweight mounted behind the first counterweight and having a second recess formed therein;
A base plate attached to the first counterweight;
A camera mounting bracket attached to the base plate and capable of attaching a camera,
With
The camera mounting bracket to which the camera is mounted is configured such that the camera is arranged in the first recess when the second counterweight is not mounted, and when the second counterweight is mounted. Is a construction machine characterized in that the camera is arranged in the second recess. A camera mounting bracket to which the camera is mounted, a first camera mounting bracket configured so that the camera is arranged in the first recess when mounted on the base plate; and A second camera mounting bracket configured to be disposed in the two recesses;
When the second counter weight is not mounted, the first camera mounting bracket is mounted on the base plate,
The construction machine according to claim 1, wherein when the second counterweight is mounted, the second camera mounting bracket is mounted on the base plate. The camera mounting bracket is configured by a member that is long in the machine front-rear direction, and includes a first fixing unit and the second fixing unit that is located in front of the first fixing unit in the machine.
When the camera mounting bracket to which the camera is mounted is fixed to the base plate via the first fixing portion, the camera is disposed in the first recess;
2. The camera according to claim 1, wherein the camera is disposed in the second recess when the camera mounting bracket to which the camera is attached is fixed to the base plate via the second fixing portion. 3. Construction machinery. The base plate is provided with a harness holding unit that bundles and holds the harness of the camera,
When the second counterweight is not attached, the harness is bundled and held by the harness holding unit,
The construction according to any one of claims 1 to 3, wherein when the second counterweight is mounted, a part of the harness is drawn to a side on which the second counterweight is mounted. machine. For mounting a camera on a construction machine having a first counterweight mounted behind a machine body and having a first recess formed therein and a second counterweight mounted behind the first counterweight and having a second recess formed therein Camera mounting structure,
A base plate attached to the first counterweight;
A camera mounting bracket attached to the base plate, to which the camera can be attached;
With
The camera mounting bracket to which the camera is mounted is configured such that the camera is disposed in the first recess when the second counterweight is not mounted, and when the second counterweight is mounted. Is a camera mounting structure, wherein the camera is arranged in the second recess.

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