JP7087790B2 - Construction machinery and camera mounting structure - Google Patents

Description

The present invention relates to a construction machine including a camera for photographing the rear of the machine body and a camera mounting structure.

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

Japanese Unexamined Patent Publication No. 2013-204288

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

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

However, depending on the model, an additional counterweight may be attached to the rear of the standard counterweight. When an additional counterweight is attached, 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 ensuring a sufficient angle of view of the camera even when an additional counterweight is attached to the standard counterweight in a configuration in which the camera is arranged on the counterweight. The purpose is.

In order to achieve the above object, the present invention is a construction machine, the machine body, a first counter weight mounted behind the machine body and having a first recess formed therein, and the first counter weight. It includes a second counter weight mounted rearward and formed with a second recess, a base plate mounted on the first counter weight, and a camera mounting bracket mounted on the base plate to which a camera can be mounted. The camera mounting bracket to which the camera is mounted is configured so that the camera is arranged in the first recess when the second counter weight is not mounted, and when the second counter weight is mounted. Provides a construction machine characterized in that the camera is configured to be disposed in the second recess.

Further, the camera mounting bracket to which the camera is mounted includes a first camera mounting bracket configured such that the camera is arranged in the first recess when the camera is mounted on the base plate, and the camera. When the second counterweight is not mounted, the first camera mounting bracket is mounted on the base plate and includes the second camera mounting bracket configured to be arranged in the second recess. When the two counterweights are mounted, it is preferable that the second camera mounting bracket is mounted on the base plate.

Further, the camera mounting bracket is composed of a member elongated in the front-rear direction of the machine, has a first fixing portion, and has the second fixing portion located in front of the first fixing portion of the machine, and the camera. 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 first. 2 It is preferable that the camera is arranged in the second recess when it is fixed to the base plate via the fixing portion.

Further, the base plate is provided with a harness holding portion for bundling and holding the harness of the camera, and when the second counterweight is not attached, 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 pulled out to the side where the second counterweight is mounted.

Further, the present invention includes a first counter weight mounted behind the machine body and having a first recess formed therein, and a second counter weight mounted behind the first counter weight and having a second recess formed therein. It is a camera mounting structure for mounting a camera on a machine, and includes a base plate mounted on the first counter weight and a camera mounting bracket mounted on the base plate and capable of mounting the camera. The attached camera mounting bracket is configured so that the camera is arranged in the first recess when the second counter weight is not attached, and the camera is attached when the second counter weight is attached. Further provides a camera mounting structure characterized in that the camera is configured to be arranged in the second recess.

According to the present invention, the camera is arranged in the first recess of the first counterweight when the second counterweight is not attached, and the camera is the second counterweight of the second counterweight when the second counterweight is attached. Placed in a recess. Therefore, in a configuration in which the camera is arranged on the counterweight, it is possible to secure a sufficient angle of view of the camera even when an additional counterweight is attached to the standard counterweight.

The side view which shows the hydraulic excavator (construction machine) by embodiment of this invention. A side view showing a hydraulic excavator equipped with an additional counterweight (second counterweight). The perspective view which shows the standard counter weight (the first counter weight). The perspective view which shows the additional counter weight (the second counter weight). A perspective view of the base plate and the first camera mounting bracket as viewed from diagonally above. A perspective view of the base plate and the first camera mounting bracket as viewed from diagonally below. A view of the base plate from below. The figure which shows how the camera is arranged in the 1st recess of a standard counterweight. A perspective view of the base plate and the second camera mounting bracket as viewed from diagonally above. A perspective view of the base plate and the second camera mounting bracket as viewed from diagonally below. The figure which shows the relationship between the 2nd camera mounting bracket and the engine bonnet. The figure which shows how the camera is arranged in the 2nd concave part of the additional counterweight. The figure for demonstrating the harness holding part. The figure which shows the camera mounting bracket which concerns on the modification.

<1. Embodiment>
The construction machine and the camera mounting structure according to the embodiment of the present invention will be described with reference to FIGS. 1 to 13. Hereinafter, the hydraulic excavator 1 shown in FIG. 1 will be illustrated as an example of the construction machine according to the present invention.

As shown in FIGS. 1 and 2, the hydraulic excavator 1 includes a crawler type lower traveling body 2 and an upper swivel body 3. The upper rotating body 3 is mounted on the lower traveling body 2 and can rotate around the vertical axis with respect to the lower traveling body 2.

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

As shown in FIG. 1, a first counterweight 4 is mounted as a standard counterweight behind the lower part of the machine body 33.

As shown in FIG. 3, the first counterweight 4 has a first recess 41 formed in the 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. Further, bolt holes 43a and 43b for attaching the base plate 6 (see FIGS. 5 and 6) described later are formed on the upper left surface of the first recess 41 of the first counterweight 4.

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

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

Next, the camera mounting units 10 (10a, 10b) for mounting the rear camera 9 will be described with reference to FIGS. 5 to 11. The camera mounting unit 10 is an example of the camera mounting structure according to the present invention.

As described above, in the hydraulic excavator 1, only the first counterweight 4 is attached to the machine body 33 (hereinafter, referred to as “first aspect”), and the second counterweight 5 in addition to the first counterweight 4. Is further attached (hereinafter referred to as "second aspect"). In this embodiment, the camera mounting units 10 (10a, 10b) capable of ensuring a sufficient angle of view of the rear camera 9 are exemplified in both the first aspect and the second aspect.

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

As shown in FIGS. 5 and 6, the camera mounting unit 10a 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, the base plate 6 is formed with two bolt holes 63a and 63b. When the base plate 6 is attached to the first counterweight 4 (see FIG. 8), the two bolts BT1 and BT2 (see FIG. 5) are inserted into and engaged with the two bolt holes 63a and 63b, respectively.

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

Further, a notch 65 is formed in the base plate 6 on the rear end side of the machine. The rear camera 9 attached to the camera mounting bracket 7 in the first aspect 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 bundles and holds the harness 90 of the rear camera 9. The harness holding portion 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 of.

When the second counterweight 5 is not attached and only the first counterweight 4 is attached, 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 on the first counterweight 4, a part of the harness 90 is pulled out to the side where the second counterweight 5 is mounted (rear of the machine).

Next, the camera mounting bracket 7 in the first aspect 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 connection plate 71 is connected by four bolts BT3, BT4, BT5, BT6 in a state of being in contact with the upper surface of the base plate 6.

The rear plate 72 is a member that bends downward from the rear end of the connecting plate 71 and extends. The rear plate 72 is formed with a rectangular hole for ensuring an angle of view at a position where the lens of the rear camera 9 is arranged.

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 is provided on the lower surface of the base plate 6 to prevent direct contact with other members.

As shown in FIG. 8, when the base plate 6 is attached to the first counterweight 4 and the camera mounting unit 10a is attached to the first counterweight 4, the rear camera 9 attached to the camera mounting unit 10a is the first. It is arranged in the first recess 41 of the counterweight 4. The first recess 41 is closed by the rear plate 72 of the camera mounting bracket 7 to insulate mechanical noise from the engine.

Subsequently, the camera mounting unit 10b according to the second aspect will be described. Also in the second aspect, exactly the same base plate 6 as in the first aspect is used. That is, the base plate 6 is standardized in the first aspect and the second aspect.

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

As shown in FIGS. 9 and 10, the camera mounting bracket 8 is composed of a plate-shaped member that is longer in the front-rear direction of the machine than the camera mounting bracket 7 (see FIGS. 5 and 6) according to the first aspect. To. 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 connected to the upper surface of the base plate 6 by two bolts BT5 and BT6 in a state of 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 bonnet 330 arranged at the upper part of the camera mounting unit 10b abuts. By providing such an inclined portion 810, it is possible to smoothly open and close the engine bonnet 330.

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

Further, as shown in FIGS. 10 and 11, a cushioning material 85 is provided on the lower surface of the stretched plate 81b to prevent direct contact with other members.

The rear plate 82 is a member that bends downward from the rear end of the stretch plate 81b and extends. The rear plate 82 is formed with a rectangular hole for ensuring an angle of view at a position where the lens of the rear camera 9 is arranged.

The side plate 83 is a member arranged on the side of the rear camera 9. The side plate 83 is formed with bolt holes for bolts for fixing the rear camera 9. 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 mounting unit 10b is mounted, the rear camera 9 is arranged in the second recess 51 formed in the second counterweight 5. The second recess 51 is closed by arranging the rear plate 82 of the camera mounting bracket 8 to insulate the 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 arranged in the first recess 41 of the first counterweight 4. When the second counterweight 5 is attached, the rear camera 9 is arranged in the second recess 51 of the second counterweight 5. Therefore, in a configuration in which the rear camera 9 is arranged on the counterweight, a sufficient angle of view is secured even when the second counterweight 5 (additional counterweight) is attached to the first counterweight 4 (standard counterweight). It is possible.

Further, according to the present embodiment, since the base plate 6 is shared in the first aspect and the second aspect, it is not necessary to remove the base plate 6 when the second counterweight 5 is attached or detached, and the camera is attached. Since the brackets 7 and 8 may be replaced as appropriate, work efficiency is high.

Further, according to the present embodiment, the camera mounting unit 10 (10a, 10b) is installed with respect to the first counterweight arranged behind the lower part of the machine main body 33. Therefore, the rear camera 9 mounted on the camera mounting unit 10 is also arranged at a relatively low position, and it is possible to take a picture of a place close to the machine main body 33.

Further, according to the present embodiment, when only the first counterweight 4 is attached, 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 where the second counterweight 5 is mounted (rear of the machine). Therefore, it is possible to make the harness 90 follow the movement of the rear camera 9 according to the attachment / detachment of the second counterweight. In particular, fixing members 91, 93 and the like are provided in various places on the side of the harness 90 extending from the winding member 673 to the controller (not shown) of the machine body 33. On the other hand, the portion of the harness 90 from the winding member 673 to the rear camera 9 is arranged on the lower surface of the camera mounting bracket 8 without being fixed by the fixing members 91, 93 and the like described above. There is. Therefore, with the attachment / detachment of the second counterweight 5, the work of releasing the fixing by the fixing member does not occur, and the work efficiency when installing the rear camera 9 is improved.

<2. Modification example>
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 of the claims.

For example, in the above embodiment, the case where the camera mounting brackets 7 and 8 are composed of different members in the first aspect and the second aspect is exemplified, but the present invention is not limited thereto. Like the camera mounting bracket 78 shown in FIG. 14, it may be configured as a common member that is long in the front-rear direction of the machine.

Specifically, the camera mounting bracket 78 is formed with a bolt hole 781h and a bolt hole 782h located in front of the machine from the bolt hole 781h.

When the camera mounting bracket 78 is fixed to the base plate 6 via the bolt holes 781h, the rear camera 9 is arranged 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 holes 782h, the rear camera 9 is arranged 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 can be reduced.

As described above, the construction machine according to the present invention is suitable for a hydraulic excavator or the like provided with a rear camera.

1 hydraulic excavator, 2 lower traveling body, 3 upper swivel body, 4 1st counterweight,
5 2nd 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 recess, 43a, 43b bolt holes,
51 Second recess, 61a to 1d back nut, 63a, 63b bolt hole, 65 notch,
67 Harness holder, 69 Cushioning material, 71 Connection plate, 72 Rear plate, 73 Side plate,
81a connection plate, 81b stretch plate, 82 rear plate, 83 side plate, 85 cushioning material,
90 harness, 671 fixing member, 673 winding member, 810 inclined part,
BT1 to BT6 bolts

Claims (5)

It ’s a construction machine,
With the machine body
A first counterweight mounted at the rear of the machine body and having a first recess formed therein.
A second counterweight mounted behind the first counterweight and formed with a second recess,
The base plate attached to the first counterweight and
A camera mounting bracket that can be mounted on the base plate and mounts a camera,
Equipped with
The camera mounting bracket to which the camera is mounted is configured so 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 configured to be arranged in the second recess. The camera mounting bracket to which the camera is attached includes a first camera mounting bracket configured such that the camera is arranged in the first recess when the camera is attached to the base plate, and the camera is the first. 2 Including a second camera mounting bracket configured to be placed in the recess
When the second counterweight is not attached, the first camera mounting bracket is attached to the base plate.
The construction machine according to claim 1, wherein when the second counterweight is attached, the second camera mounting bracket is attached to the base plate. The camera mounting bracket is composed of a member elongated in the front-rear direction of the machine, and has a first fixing portion and a second fixing portion located in front of the first fixing portion of 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 arranged in the first recess.
The first aspect of claim 1, wherein the camera is arranged in the second recess when the camera mounting bracket to which the camera is mounted is fixed to the base plate via the second fixing portion. Construction machinery. The base plate is provided with a harness holding portion for bundling and holding the harness of the camera.
When the second counterweight is not attached, the harness is bundled and held by the harness holding portion.
The construction according to any one of claims 1 to 3, wherein when the second counterweight is mounted, a part of the harness is pulled out to the side where the second counterweight is mounted. machine. To attach a camera to a construction machine having a first counterweight mounted behind the machine body and formed with a first recess and a second counterweight mounted behind the first counterweight and formed with a second recess. It is a camera mounting structure of
The base plate attached to the first counterweight and
A camera mounting bracket that is mounted on the base plate and can mount the camera,
Equipped with
The camera mounting bracket to which the camera is mounted is configured so 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 camera mounting structure characterized in that the camera is configured to be arranged in the second recess.

Images