JP2022055082A - Support member, upper revolving structure, and construction machine - Google Patents

Abstract

To provide a support member for an upper revolving structure of a construction machine, which is less in welding strain, light weight, and easy to manufacture.SOLUTION: A support member of the present invention includes a support frame made of a single metal plate material. The support frame includes: a rectangular support plate disposed horizontally and having a plurality of openings spaced in a longitudinal direction; and one or more ribs projecting downward from an outer peripheral edge of the support plate.SELECTED DRAWING: Figure 1

Description

The present invention relates to a support member, an upper swing body, and a construction machine.

A construction machine such as a crane is provided with an upper swing body (for example, Japanese Patent Application Laid-Open No. 2018-048018). The upper swivel body includes a swivel frame and a support member provided on the swivel frame to support various devices.

Japanese Unexamined Patent Publication No. 2018-048018

The conventional support member as described in the above publication is manufactured by combining a plurality of angle members and fixing them by welding. The support member constitutes an outer frame by welding two pairs of angle materials facing each other, and is reinforced by bridging a plurality of angle materials into the internal space of the outer frame by welding, and further, various fixing flanges. Is provided by welding separately to the required location.

The support member has many welded portions, and the welding strain may increase.

Further, since the support member reinforces the internal space of the outer frame with a plurality of angle members, the weight may increase. For example, when it is not possible to secure an angle material having the optimum dimensions for arranging the support member in the internal space of the outer frame, it is possible to use a plurality of angle materials in order to provide the same reinforcement as the angle material. It takes. When the number of angle members for such reinforcement increases, the structure of the reinforcing portion tends to be complicated, and the weight of the support member tends to increase.

Further, if the number of angle members for reinforcement increases, the number of steps for welding the angle members during the manufacture of the support member increases, which may increase the manufacturing time of the support member.

In addition, the support member tends to have a step in the welded portion between the angle members. If this step is present, it may not be possible to add various fixing flanges, and additional processing (step correction processing) to correct the step is required, which may increase the manufacturing time and manufacturing cost.

Further, when performing the step correction process, it may be necessary to add a member for correcting the step, and the weight of the support member tends to increase.

The support member needs to have a relatively large number of flanges for fixing the peripheral parts, particularly when supporting a hydraulic valve device having many peripheral parts, which may increase the manufacturing time and the manufacturing cost. ..

The present invention has been made based on the above circumstances, and an object of the present invention is to provide a support member which has less welding strain, is lightweight, and can be easily manufactured.

The support member according to one aspect of the present invention invented to solve the above problems is a support member attached to a swivel frame of an upper swivel body in a construction machine, and is a support composed of a single metal plate material. A rectangular support plate provided with a frame, the support frame having a plurality of openings provided at intervals in the longitudinal direction and arranged in the horizontal direction, and a support plate projecting downward from the outer peripheral edge of the support plate 1. Or it has a plurality of ribs.

The support member according to one aspect of the present invention has less welding strain, is lightweight, and can be easily manufactured.

FIG. 1 is a schematic perspective view showing a support member according to an embodiment of the present invention. FIG. 2 is a schematic plan view showing a swivel frame of an upper swivel body in a construction machine according to an embodiment of the present invention. FIG. 3 is a schematic plan view showing a state in which the support member of FIG. 1 is fixed to the swivel frame of FIG. FIG. 4 is a schematic plan view showing a state in which the support member of FIG. 1 supports the hydraulic valve device. FIG. 5 is a schematic side view showing a state in which the support member of FIG. 1 supports the hydraulic valve device.

[Explanation of Embodiment of the present invention]
First, embodiments of the present invention will be listed and described.

The support member according to one aspect of the present invention is a support member attached to a swivel frame of an upper swivel body in a construction machine, and includes a support frame made of a single metal plate material. It has a rectangular support plate having a plurality of openings provided at intervals in the direction and arranged in the horizontal direction, and one or a plurality of ribs protruding downward from the outer peripheral edge of the support plate.

Since the support frame is composed of a single metal plate material, the support member has little welding strain. Further, since the support member is provided with a plurality of openings at intervals in the support plate and the portion between the adjacent openings constitutes a reinforcing portion, the support member is reinforced by adjusting the shape and arrangement of the openings. The strength of the part can be easily controlled. Therefore, in the support member, the structure of the reinforcing portion is simplified and the weight of the support member can be reduced as compared with the reinforcement by the angle member as in the conventional support member. Further, the support member has few welded portions and can reduce the step correction process, so that the manufacturing can be facilitated. In the present specification, "facilitation of manufacturing" means simplification of manufacturing due to simplification of manufacturing process, shortening of manufacturing time, or reduction of manufacturing cost.

It is preferable that the upper surface of the support plate is flush with each other. As described above, since the upper surface of the support plate is flush with each other, the degree of freedom in the mounting position can be increased when various fixing flanges and the like are added. Further, according to this configuration, step correction processing is not required, so that manufacturing can be facilitated.

It is preferable that the outer side surface of the rib is flush with each other. As described above, since the outer side surfaces of the ribs are flush with each other, the degree of freedom in the mounting position can be increased when various fixing flanges and the like are added. Further, according to this configuration, since the step correction processing is not required, the manufacturing can be facilitated.

It is preferable that the one or a plurality of ribs are provided as a whole over the entire circumference of the outer peripheral edge. As described above, the strength of the support frame can be easily increased by providing the one or a plurality of ribs over the entire circumference of the outer peripheral edge as a whole.

It is preferable that the support frame further has a flange portion protruding from the tip edge in the protruding direction of the rib. As described above, since the support frame further has a flange portion protruding from the tip edge in the protruding direction of the rib, welding of various fixing flanges can be reduced, and manufacturing can be facilitated.

The upper swing body according to another aspect of the present invention includes the support member and a hydraulic valve device supported by the support member.

Since the upper swing body includes the support member, it is lightweight and can be easily manufactured. Further, since the support member supports the hydraulic valve device having many peripheral parts, the cost of securing the flange portion for fixing the peripheral parts is reduced.

The construction machine according to another aspect of the present invention includes the upper swivel body.

Since the construction machine is provided with the upper swivel body, it is lightweight and can be easily manufactured.

In the present invention, the "horizontal direction" means a direction parallel to the installation surface of the construction machine provided with the support member, and the "vertical direction" means a direction perpendicular to the "horizontal direction". .. The "downward" means the direction from the support member toward the installation surface of the construction machine in the "vertical direction", and the "upper" means the opposite direction of the "downward". The "rectangular support plate" means that the upper surface of the support plate of the support member has a rectangular shape.

[Details of Embodiments of the present invention]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Support member]
The support member 10 of FIG. 1 is a support member attached to a swivel frame 20 (FIG. 2) of an upper swivel body of a construction machine, and includes a support frame 11 composed of a single metal plate material. The support member 10 supports the hydraulic valve device 30 described later.

The support member 10 may include parts other than the support frame 11 depending on the device supported by the support member 10 or other requirements. In the present embodiment, the support member 10 has a reinforcing plate 13 and a welded flange 14 as parts other than the support frame 11. However, the present invention is not limited by the presence or absence of parts other than the support frame 11 and the number of the above parts, and the support member 10 may be configured not to have the above parts.

<Support frame>
The support frame 11 has a rectangular support plate 12 having a plurality of openings 12b provided at intervals in the longitudinal direction and arranged in the horizontal direction, and a plurality of ribs protruding downward from the outer peripheral edge of the support plate 12. It has 15. The support frame 11 further has a flange portion that protrudes from the tip edge of the rib 15 in the protruding direction.

(Support plate)
The opening 12b of the support plate 12 is preferably rectangular. As described above, the rectangular shape of the opening 12b of the support plate 12 makes it easy to achieve both the weight reduction of the support plate 12 and the strength of the support member 10. However, the shape of the opening 12b can be changed to another shape such as a circular shape or an elliptical shape depending on the device supported by the support member 10 and other requirements.

The upper surface of the support plate 12 is flush with each other. As described above, since the upper surface of the support plate 12 is flush with each other, the degree of freedom in the mounting position can be increased when the flange or the like is welded to the support plate 12 as a component other than the support frame 11. Further, according to this configuration, it is not necessary to perform step correction processing on the support plate 12, so that manufacturing can be facilitated.

It is preferable that the lower surface of the support plate 12 is flush with each other and the thickness is uniform. As described above, since the lower surface of the support plate 12 is flush with each other and the thickness is uniform, it is easy to secure a fixing hole for fixing parts other than the support frame 11 to the support plate 12. become. Here, "uniform thickness" means that the thicknesses in the vertical direction at any two points of the support plate 12 are substantially equal.

The support plate 12 has a plurality of fixing holes 12a. As described above, since the support plate 12 has a plurality of fixing holes 12a, the hydraulic valve device 30 can be easily fixed to the support member 10. However, the number of fixing holes 12a and the arrangement of the fixing holes 12a can be appropriately changed according to the device supported by the support member 10 or other requirements.

(rib)
The rib 15 is provided as a whole over the entire circumference of the outer peripheral edge of the support plate 12. Specifically, a total of four ribs 15 project downward from each of the two longitudinal sides and the two short sides of the support plate 12, and the four ribs 15 as a whole project from the outer peripheral edge of the support plate 12. It is provided all around. As described above, the ribs 15 are provided over the entire circumference of the outer peripheral edge of the support plate 12 as a whole, so that the strength of the support member 10 is increased.

The outer side surface of the rib 15 is flush with each other. As described above, since the outer side surface of the rib 15 is flush with each other, the degree of freedom in the mounting position when welding the flange or the like as a component other than the support frame 11 to the rib 15 can be increased. Further, according to this configuration, it is not necessary to perform the step correction processing on the rib 15, so that the manufacturing can be facilitated.

The rib 15 preferably has a flush surface on the back side and a uniform thickness. As described above, since the side surface on the back side of the rib 15 is flush with each other and the thickness is uniform, it is easy to secure a fixing hole in the rib 15 for fixing parts other than the support frame 11. become. Here, "uniform thickness" means that the horizontal thicknesses of the ribs 15 at any two points are substantially equal.

(Flange part)
The flange portion has a horizontal flange 16 and a vertical flange 17.

The horizontal flange 16 is arranged on one of two ribs 15 provided on the longitudinal side of the support plate 12, and is provided so as to project horizontally from the tip edge of the rib 15 in the projecting direction. Each of the horizontal flanges 16 has a fixing hole 16a. As described above, since the horizontal flange 16 is provided and each of the horizontal flanges 16 has a fixing hole 16a, welding of the flange to the support frame 11 can be reduced, and peripheral parts of the hydraulic valve device 30 can be fixed. It will be easier.

It is preferable that a plurality of horizontal flanges 16 are arranged at intervals. By arranging a plurality of horizontal flanges 16 at intervals in this way, peripheral parts of the hydraulic valve device 30 are securely fixed to the support frame 11. However, the number and arrangement of the horizontal flanges 16 can be appropriately changed according to the requirements of the device supported by the support member 10 or other requirements.

It is preferable that the upper surface and the lower surface of the horizontal flange 16 are flush with each other and the thickness is uniform. As described above, since the upper and lower surfaces of the horizontal flange 16 are flush with each other and the thickness is uniform, the horizontal flange 16 is provided with a fixing hole 16a for fixing peripheral parts of the hydraulic valve device 30 and the like. It will be easier to secure. Here, "uniform thickness" means that the thicknesses in the vertical direction at any two points of the horizontal flange 16 are substantially equal.

The vertical flange 17 is arranged on both of the two ribs 15 provided on the longitudinal side of the support plate 12, and is provided so as to project downward from the tip edge of the two ribs 15 in the protruding direction. Each of the vertical flanges 17 has a fixing hole 17a. As described above, by providing the vertical flange 17 and each of the vertical flanges 17 having a fixing hole 17a, welding of the flange to the support frame 11 can be reduced, and the support member 10 can be fixed to the swivel frame 20. It will be easier.

It is preferable that a plurality of vertical flanges 17 are arranged at intervals in both of the above two ribs 15. As described above, a plurality of vertical flanges 17 are arranged at intervals in both of the two ribs 15, so that the support member 10 is securely fixed to the swivel frame 20. Further, as in the present embodiment, the two vertical flanges 17 are arranged so as to face each other in the lateral direction of the support plate 12 according to the shape of the swivel frame 20, and the two vertical flanges 17 are paired. A plurality of pairs may be arranged. However, the number and arrangement of the vertical flanges 17 can be appropriately changed according to the shape of the swivel frame 20 or other requirements.

It is preferable that the outer surface and the back surface of the vertical flange 17 are flush with each other and have a uniform thickness. As described above, since the outer surface and the back surface of the vertical flange 17 are flush with each other and have a uniform thickness, the support member 10 is fixed to the vertical flange 17 and the support member 10 to the swivel frame 20. It becomes easy to secure the fixing hole 17a. Here, "uniform thickness" means that the horizontal thicknesses of the vertical flanges 17 at any two points are substantially equal.

<Parts other than the support frame>
In the present embodiment, the reinforcing plate 13 and the welding flange 14 are welded to the support frame 11 as parts other than the support frame. The reinforcing plate 13 bridges the support frame 11 in the lateral direction of the support plate 12 and is welded to the lower surface of the support plate 12 and the inner side surface of the rib 15. By welding the reinforcing plate 13 in this way, the strength of the support member 10 can be further increased. The welding flange 14 is welded to the upper surface of the support plate 12. By welding the welding flange 14 to the upper surface of the support plate 12 in this way, it becomes easier to fix the peripheral parts of the hydraulic valve device 30 to the support frame 11.

<Advantage>
Since the support frame 11 of the support member 10 in the present embodiment is composed of a single metal plate material, the welding strain is small. Further, the support member 10 is provided with a plurality of openings 12b at intervals in the support plate 12, and the portion between the adjacent openings 12b forms a reinforcing portion, so that the shape and arrangement of the openings 12b are adjusted. Therefore, the strength of the reinforcing portion can be easily controlled. Therefore, the structure of the reinforcing portion of the support member 10 is simplified as compared with the reinforcement by the angle member as in the conventional support member, and the weight of the support member 10 can be reduced. Further, the support member 10 has few welded portions and can reduce the step correction process, so that the manufacturing can be facilitated.

[Upper swivel body]
The upper swing body in the present embodiment includes a support member 10 and a hydraulic valve device 30 supported by the support member 10. Further, the upper swivel body in the present embodiment includes a swivel frame 20, and the support member 10 is attached to the swivel frame 20.

<Swivel frame>
The swivel frame 20 of FIG. 2 is not particularly limited, but the outer frame of the swivel frame 20 is composed of a pair of vertical frames 21 and a pair of horizontal frames 22, and is further reinforced by a plurality of horizontal frames 22. The upper direction in FIG. 2 is the front of the construction machine, and the lower direction in FIG. 2 is the rear of the construction machine. From the reinforcing horizontal frame 22 located behind the construction machine, a plurality of beams 23 are provided behind the construction machine and in the horizontal direction. Each of the beams 23 has a flange 24 for fixing the support member 10. The flange 24 has a fixing hole.

FIG. 3 shows a state in which the support member 10 is fixed to the swivel frame 20 of FIG. The support member 10 is placed on the beam 23 of the swivel frame 20 and is face-to-face between the vertical flange 17 of the support member 10 and the flange 24 of the swivel frame 20. The support member 10 is fixed to the swivel frame 20 by attaching bolts to the fixing holes 17a and the fixing holes of the flange 24.

<Hydraulic valve device>
4 and 5 show a state in which the support member 10 supports the hydraulic valve device 30. In the present embodiment, the hydraulic valve device 30 includes a hydraulic valve unit 31, an oil passage 32, an oil passage 33, a joint 35, a control valve 36, a tube joint 37, and a hydraulic tube 38.

In the hydraulic valve device 30 of FIGS. 4 and 5, the combination of a plurality of hydraulic valves and their piping structure are schematicized as a hydraulic valve unit 31 as a whole, and a part to be attached to the support member 10 in addition to the hydraulic valve unit 31. Only the oil passages, valves, hydraulic tubes and fittings are specified. The hydraulic valve unit 31 is fixed with bolts using the fixing holes 12a of the support plate 12 of the support member 10.

The oil passage 33 is placed on the horizontal flange 16 along the longitudinal direction of the support plate 12. A plurality of oil passages 32 extend from the upper surface of the oil passage 33 and are connected to the hydraulic valve unit 31 via the joint 35. In the oil passage 33, a fixing cover 34 having a fixing hole 34a is installed in accordance with the position of the horizontal flange 16. The fixing cover 34 is covered from the upper surface of the oil passage 33, and is fixed by attaching a fixing bolt 39 to the fixing hole 16a and the fixing hole 34a.

One end of the hydraulic tube 38 is connected to the control valve 36 via the tube joint 37, and the other end is fixed to the fixing hole 14a of the welded flange 14 of the support member 10. In FIGS. 4 and 5, only the hydraulic tube 38 directly fixed to the support member 10 is shown, and the other tubes connected to the hydraulic valve unit 31 are omitted.

<Advantage>
Since the upper swing body in the present embodiment includes the support member 10, it is lightweight and can be easily manufactured. Further, since the support member 10 supports the hydraulic valve device 30 having many peripheral parts, the cost of securing a flange portion for fixing the peripheral parts is reduced.

[Construction machinery]
The construction machine in the present embodiment includes an upper swivel body having the above configuration. For example, it is possible to provide a lower traveling body that rotatably supports (swivels) the upper swivel body about the vertical direction.

<Advantage>
Since the construction machine in the present embodiment includes the upper swing body, it is lightweight and can be easily manufactured.

[Other embodiments]
The above embodiment is not limited to the present invention. Therefore, the above-described embodiment can be omitted, replaced or added with components of each part of the above-described embodiment based on the description of the present specification and common general technical knowledge, and all of them are construed to belong to the scope of the present invention. Should be.

In the above embodiment, the upper surface of the support plate of the support member is flush with each other, but the present invention is not limited to the above configuration, and the support plate of the support member may not have the upper surface flush with each other. For example, it is possible to apply anti-slip processing during work on the upper surface of the support plate of the support member, or to partially provide a step.

In the above embodiment, the ribs of the support member are provided over the entire circumference of the outer peripheral edge of the support plate as a whole, but the present invention is not limited to the above configuration. For example, the rib of the support member may be provided on a part of the outer peripheral edge of the support plate.

In the above embodiment, a total of four ribs of the support member are provided, but the present invention is not limited to the number of ribs. For example, the support member may have one rib.

In the above embodiment, the ribs of the support member are flush with the outer side surface, but the present invention is not limited to the above configuration, and the outer side surfaces of the ribs of the support member may not be flush with each other. For example, it is possible to partially provide a step on the outer side surface of the rib of the support member.

In the above embodiment, it has been described that the flange portion has a horizontal flange for fixing the hydraulic valve device and a vertical flange for fixing the support member to the swivel frame, but the present invention is not limited to the above configuration. For example, depending on the shape of the device supported by the support member, a flange protruding in the vertical direction may be provided for fixing the device. Further, depending on the shape of the swivel frame, a flange protruding in the horizontal direction can be provided to fix the support member to the swivel frame. Further, depending on the requirements of the support member, it is possible to have a configuration in which the flange portion is not provided.

In the above embodiment, the horizontal flange and the vertical flange are provided in the longitudinal direction of the support plate, but the present invention is not limited to the above configuration. For example, depending on the requirements of the support member, a part or all of the horizontal flange and the vertical flange may be provided in the lateral direction of the support plate.

In the above embodiment, the configuration in which the support member supports the hydraulic valve device has been described as an example, but the present invention is not limited to the above configuration. For example, as the above-mentioned device, another device necessary for a construction machine such as an oil tank may be supported by a support member.

In the above embodiment, the swivel frame has an outer frame composed of a pair of vertical frames and a pair of horizontal frames, and is further reinforced by a plurality of horizontal frames, but the present invention is not limited to the above configuration. The members and shapes constituting the swivel frame can be appropriately selected according to the requirements of the construction machine.

In the above embodiment, the support member is attached to the rear side of the construction machine with respect to the swivel frame, but the present invention is not limited to the above configuration. For example, the support member may be attached closer to the front of the construction machine with respect to the swivel frame.

In the above embodiment, one support member is attached to one swivel frame, but the present invention is not limited to the above configuration. For example, a plurality of support members may be attached to one swivel frame.

In the above embodiment, the fixing of the support member and the hydraulic valve device and the fixing of the support member and the swivel frame have been described using bolts, but the present invention is not limited thereto. Further, even when a bolt is used, the present invention is not limited to the example of the above embodiment.

The present invention is suitably used for construction machinery such as a mobile crane equipped with a hydraulic valve device, for example.

10 Support member 11 Support frame 12 Support plate 12a Fixing hole 12b Opening 13 Reinforcing plate 14 Welding flange 14a Fixing hole 15 Rib 16 Horizontal flange 16a Fixing hole 17 Vertical flange 17a Fixing hole 20 Swing frame 21 Vertical frame 22 Horizontal frame 23 Beam 24 Flange 30 Hydraulic valve device 31 Hydraulic valve unit 32 Oil passage 33 Oil passage 34 Fixing cover 34a Fixing hole 35 Fitting 36 Control valve 37 Tube fitting 38 Hydraulic tube 39 Fixing bolt

Claims (7)

A support member attached to the swivel frame of the upper swivel in construction machinery.
With a support frame made of a single metal plate,
The support frame has a rectangular support plate horizontally arranged with a plurality of openings provided at intervals in the longitudinal direction, and one or a plurality of ribs protruding downward from the outer peripheral edge of the support plate. Support member having and. The support member according to claim 1, wherein the upper surface of the support plate is flush with each other. The support member according to claim 1 or 2, wherein the outer side surface of the rib is flush with each other. The support member according to claim 1, claim 2 or claim 3, wherein the one or a plurality of ribs are provided as a whole over the entire circumference of the outer peripheral edge. The support member according to any one of claims 1 to 4, wherein the support frame further has a flange portion protruding from the tip edge in the protruding direction of the rib. The support member according to any one of claims 1 to 5, and the support member.
An upper swing body including a hydraulic valve device supported by the support member. The construction machine provided with the upper swivel body according to claim 6.

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