JP6233583B2 - Centralized greasing part mounting structure and work machine - Google Patents

Description

The present invention relates to a structure for attaching a centralized greasing portion provided on a boom of a work machine and a technology related thereto.

  A boom of a construction machine is provided with a plurality of pin coupling portions for coupling the boom and other members (such as an arm and a machine main body) with a coupling pin. In order to suppress the friction between the hole of the pin hole and the connecting pin, it is necessary to periodically grease (supply) the pin coupling portion.

  However, the plurality of pin coupling portions described above are usually arranged in a distributed manner in the longitudinal direction of the boom. Therefore, in the greasing operation, the worker has to perform greasing while moving between the plurality of pin coupling portions arranged in a distributed manner, and the work efficiency is not always good.

  On the other hand, a plurality of greasing pipes are arranged on the boom, one end of each greasing pipe is connected to each pin coupling part, and a greasing port for feeding grease is provided on the other end. A piping structure in which the greasing ports are intensively arranged has been proposed (see Patent Document 1).

  Specifically, as shown in FIG. 6 of Patent Document 1, the first greasing pipe (127) to the fifth greasing pipe (167) extend on the upper surface (115d) of the boom (115) in the boom longitudinal direction. It is arranged. And one end part of the 1st greasing pipe (127)-the 5th greasing pipe (167) is connected to the pin joint part, and the greasing port (127a-167a) provided in the other end part is bound by the fixed block And are centrally arranged at equal intervals.

JP 2010-163824 A

  By the way, as shown in FIG. 4, in the greasing work, the worker WK usually supplies the grease to the centralized greasing section 150 disposed on the upper surface of the boom 15 while standing at the tip of the right deck 17. As shown in FIG. 4, in a model in which the distal end portion of the right deck 17 is located behind the base end portion (boom foot) of the boom 15, the worker WK must visually recognize the central greasing portion 150 from the rear. Don't be.

  However, in the technique described in Patent Document 1, as shown in FIG. 6 of Patent Document 1, the fixing blocks (plates) of the greasing ports (127a to 167a) are arranged along the side surface of the boom (115). ing. In other words, the fixed block (plate) is arranged such that one end located on the base end side of the boom (115) is farther from the central axis of the boom than the other end located on the tip end side of the boom. . In this case, as shown in FIG. 5, the worker WK who visually recognizes the central greasing unit 150 from the rear has the greasing port of the central greasing unit 150 (particularly, the greasing port on the tip side of the boom 15) It is difficult to see. In particular, in a model in which the right deck 17 is arranged rearward compared to other models, the visibility of the greasing port of the central greasing unit 150 is greatly reduced.

  Then, an object of this invention is to provide the technique which improves the visibility of a greasing port in the greasing operation | work to the central greasing part provided in the boom of the working machine.

  In order to achieve the above object, the present invention is a mounting structure for a centralized greasing section provided on a boom of a work machine, and a plurality of greasing pipes and a plurality of greasing pipes provided at one end of the plurality of greasing pipes, respectively. And a plate disposed on the upper surface of the boom in a state where the plurality of greasing ports are attached to the attachment surface, the plate having a mounting surface facing the machine side, Arranged so that the first end located on the base end side of the boom is closer to the central axis of the boom than the second end located on the tip end side of the boom when the boom is viewed from above. The structure for mounting the centralized greasing part is provided.

  Moreover, it is preferable that the said plate is arrange | positioned at the clearance gap between several main body piping arrange | positioned at the upper surface of the said boom, when the said boom is seen from an upper side.

  Further, the plurality of main body pipes are fixed to the upper surface of the boom by a fixture, and the fixture is present in a direction perpendicular to the mounting surface and deviating from the direction in which the mounting surface faces. Preferably, the plate is arranged.

The present invention is a work machine, a machine body, a boom connected to the machine body,
A centralized greasing part provided on the boom, the centralized greasing part includes a plurality of grease pipes, a plurality of grease ports provided at one end of the plurality of grease pipes, and a side of the machine. And a plate disposed on the upper surface of the boom in a state where the plurality of greasing ports are attached to the mounting surface, and the plate is viewed when the boom is viewed from above. The working machine is arranged such that the first end located on the base end side of the boom is closer to the central axis of the boom than the second end located on the tip end side of the boom. Is further provided.

  According to the mounting structure of the centralized greasing part of Claim 1, since the mounting surface of the plate to which the plurality of greasing ports are attached faces the base end side of the boom, the greasing operation is performed from the rear of the base end part of the boom. Even when it is performed, good visibility of the plurality of greasing ports can be ensured.

  According to the mounting structure of the centralized greasing part according to claim 2, since the plate is arranged in the gap between the plurality of pipes, the operator can easily perform the greasing port maintenance work using the gap. Is possible.

  According to the attachment structure of the centralized greasing part of Claim 3, it is possible to prevent that the grease gun used for greasing interferes with the fixture which fixes several main body piping in the greasing work.

  According to the work machine of the fourth aspect, even when the greasing operation is performed from the rear of the base end of the boom, good visibility of the plurality of greasing ports can be ensured.

The figure which shows the hydraulic excavator by embodiment of this invention. The side view of a boom. The III arrow line view of FIG. The conceptual diagram which shows the mode of a greasing work. The V arrow line view of FIG.

<1. Embodiment>
A working machine according to an embodiment of the present invention will be described with reference to FIGS. Hereinafter, a hydraulic excavator 1 will be described as an example of a work machine.

  As shown in FIG. 1, the hydraulic excavator 1 includes a crawler type lower traveling body 2 and an upper swing body 3. In FIG. 1, the right side of the drawing shows the front of the hydraulic excavator 1, and the left side of the drawing shows the rear of the hydraulic excavator 1.

  The upper swing body 3 is mounted on the lower travel body 2 and can swing around the vertical axis with respect to the lower travel body 2. The upper swing body 3 includes a cab (cab) 4, a boom 5, a right deck 7, and the like. A central greasing unit 50 is provided on the upper surface of the boom 5.

  Hereinafter, the central greasing unit 50 will be described in detail with reference to FIGS. 2 and 3. 2 is a side view of the boom 5, and FIG. 3 is a view taken along the arrow III in FIG.

  As shown in FIG. 3, the centralized greasing unit 50 includes a plate 51, a plurality of greasing pipes 52a to 52e, and a plurality of greasing ports 53a to 53e.

  The plate 51 is a plate member that is disposed on the upper surface 5u of the boom 5 and has an attachment surface facing the machine side. A plurality of greasing ports 53 a to 53 e are attached to the attachment surface of the plate 51 so as to be arranged at a predetermined interval.

  The greasing pipes 52 a to 52 e are pipes for sending the grease supplied in the greasing work to the pin coupling portion provided in the boom 5. A plurality of greasing ports 53a to 53e are provided at one end portions of the greasing tubes 52a to 52e, respectively. In addition, the other edge part of the said greasing pipes 52a-52e is connected to the several pin coupling part provided in the boom 5, respectively.

  The greasing ports 53a to 53e are injection ports for injecting grease with a grease gun in a greasing operation. The greasing ports 53a to 53e are attached to the attachment surface of the plate 51 and face the normal direction of the attachment surface.

  In the present embodiment, as shown in FIG. 3, when the plate 51 is viewed from the upper side of the boom 5, the end portion 51 a located on the proximal end side of the boom 5 is located on the distal end side of the boom 5. It arrange | positions so that it may become near center axis | shaft CA of the said boom 5 compared with the edge part 51b. As a result, the mounting surface of the plate 51 slightly faces the base end side of the boom 5.

  By the way, the greasing ports 53a to 53e fixed to the plate 51 need to be regularly maintained. This maintenance work is usually performed by an operator inserting a tool from the upper side of the boom 5 or the like.

  On the other hand, as shown in FIG. 3, a plurality of main body pipes 54 a, 54 b and the like are arranged on the upper surface 5 u of the boom 5 in addition to the central greasing unit 50. Therefore, when the plate 51 is disposed at a position overlapping the main body pipes 54a, 54b and the like when viewed from the upper side of the boom 5, the workability of the maintenance work is significantly reduced.

  Therefore, in the present embodiment, the plate 51 is configured to be disposed in a gap between the main body pipes 54a and 54b and the like fixed to the upper surface 5u of the boom 5 when the boom 5 is viewed from above.

  In view of the visibility of the greasing ports 53a to 53e in the greasing operation, it is preferable that the mounting surface of the plate 51 is disposed so as to face the base end side of the boom 5 as much as possible.

  However, a fixture (also referred to as a tapped block) for fixing the main body pipes 54a, 54b and the like is further arranged on the upper surface 5u of the boom 5. For example, as shown in FIG. 3, the main body pipes 54 a and 54 b are fixed to the upper surface 5 u of the boom 5 by the tapped block 55. Here, the tapped block 55 is disposed on the proximal end side of the boom 5 and on the side of the boom 5 with respect to the position of the central greasing unit 50.

  Therefore, when the mounting surface of the plate 51 is extremely inclined so as to face the base end side of the boom 5, the tapped block 55 exists in the direction facing the mounting surface. In this case, when the greasing operation is performed, the grease gun for greasing interferes with the tapped block 55, and as a result, there is a possibility that the greasing cannot be performed.

  Therefore, in the present embodiment, the plate 51 is disposed so that the tapped block 55 is located at a position perpendicular to the mounting surface of the plate 51 and deviated from the direction in which the mounting surface faces. The inclination is kept in the state shown in FIG.

  As described above, in this embodiment, the mounting surface of the plate 51 to which the greasing ports 53 a to 53 e are mounted faces the base end side of the boom 5. Therefore, even when the greasing operation is performed from the rear of the base end portion of the boom 5, good visibility of the greasing ports 53a to 53e can be ensured.

  In particular, in the present embodiment, when the boom 5 is viewed from the upper side, the plate 51 is disposed in a gap between the plurality of main body pipes 54a, 54b and the like. Therefore, the worker can easily perform the maintenance work of the greasing ports 53a to 53e using the gap.

  In particular, in the present embodiment, the plate 51 is arranged so that the tapped block 55 is located at a position that is perpendicular to the mounting surface of the plate 51 and deviates from the direction in which the mounting surface faces. Therefore, it is possible to prevent the grease gun used for lubrication from interfering with the tapped block 55 in the greasing operation.

<2. Modification>
The central greasing part and work machine by this invention are not limited to embodiment mentioned above, A various deformation | transformation and improvement are possible in the range described in the claim.

  For example, in the above-described embodiment, the case where the idea of the present invention is applied to a hydraulic excavator that is an example of a work machine is illustrated, but the present invention is not limited to this, and the idea of the present invention is applied to other work machines (such as a dismantling machine). You may apply.

  Moreover, in the said embodiment, although the case where the some greasing ports 53a-53e were attached so that it might be linearly arranged with a predetermined space | interval was illustrated, it is not limited to this, A some greasing port is linear. It does not need to be arranged.

  As described above, the mounting structure of the centralized greasing unit according to the present invention is suitable for, for example, the centralized greasing unit provided on the boom of the work machine.

1 hydraulic excavator, 2 lower traveling body, 3 upper turning body, 5 boom, 5u upper surface,
7 right deck, 15 boom, 17 right deck, 50 central greasing section, 51 plates,
51a, 51b end, 52a-52e greasing pipe, 53a-53e greasing port,
54a, 54b Body piping, 55 tapped block, CA central axis, WK worker

Claims (4)

A mounting structure for a centralized greasing portion provided on a boom of a work machine,
A plurality of greasing pipes;
A plurality of greasing ports respectively provided at one end of the plurality of greasing pipes;
A plate disposed on the upper surface of the boom in a state of having a mounting surface facing the machine side and the plurality of greasing ports being mounted on the mounting surface;
With
In the plate, when the boom is viewed from above, the first end portion located on the base end side of the boom is closer to the central axis of the boom than the second end portion located on the distal end side of the boom. A structure for mounting a centralized greasing part, which is arranged as described above. In the mounting structure of the central greasing part of Claim 1,
The structure for mounting a centralized greasing section, wherein the plate is disposed in a gap between a plurality of main body pipes disposed on an upper surface of the boom when the boom is viewed from above. In the mounting structure of the central greasing part of Claim 2,
The plurality of main body pipes are fixed to the upper surface of the boom by a fixture,
A mounting structure for a centralized greasing portion, wherein the plate is arranged so that the fixing tool exists at a position perpendicular to the mounting surface and deviating from the direction in which the mounting surface faces. A working machine,
The machine body,
A boom connected to the machine body;
A central greasing section provided on the boom;
With
The central greasing part is
A plurality of greasing pipes;
A plurality of greasing ports respectively provided at one end of the plurality of greasing pipes;
A plate disposed on the upper surface of the boom in a state of having a mounting surface facing the machine side and the plurality of greasing ports being mounted on the mounting surface;
Have
In the plate, when the boom is viewed from above, the first end portion located on the base end side of the boom is closer to the central axis of the boom than the second end portion located on the distal end side of the boom. A working machine characterized by being arranged as follows.

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